3 * Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi>
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.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
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.
22 #include "crypto/random.h"
23 #include "crypto/sha1.h"
24 #include "eapol_supp/eapol_supp_sm.h"
25 #include "eap_peer/eap.h"
26 #include "eap_server/eap_methods.h"
27 #include "rsn_supp/wpa.h"
30 #include "l2_packet/l2_packet.h"
31 #include "wpa_supplicant_i.h"
33 #include "ctrl_iface.h"
34 #include "pcsc_funcs.h"
35 #include "common/version.h"
36 #include "rsn_supp/preauth.h"
37 #include "rsn_supp/pmksa_cache.h"
38 #include "common/wpa_ctrl.h"
39 #include "common/ieee802_11_defs.h"
41 #include "blacklist.h"
42 #include "wpas_glue.h"
43 #include "wps_supplicant.h"
46 #include "gas_query.h"
48 #include "p2p_supplicant.h"
53 #include "offchannel.h"
55 const char *wpa_supplicant_version
=
56 "wpa_supplicant v" VERSION_STR
"\n"
57 "Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi> and contributors";
59 const char *wpa_supplicant_license
=
60 "This program is free software. You can distribute it and/or modify it\n"
61 "under the terms of the GNU General Public License version 2.\n"
63 "Alternatively, this software may be distributed under the terms of the\n"
64 "BSD license. See README and COPYING for more details.\n"
65 #ifdef EAP_TLS_OPENSSL
66 "\nThis product includes software developed by the OpenSSL Project\n"
67 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
68 #endif /* EAP_TLS_OPENSSL */
71 #ifndef CONFIG_NO_STDOUT_DEBUG
72 /* Long text divided into parts in order to fit in C89 strings size limits. */
73 const char *wpa_supplicant_full_license1
=
74 "This program is free software; you can redistribute it and/or modify\n"
75 "it under the terms of the GNU General Public License version 2 as\n"
76 "published by the Free Software Foundation.\n"
78 "This program is distributed in the hope that it will be useful,\n"
79 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
80 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
81 "GNU General Public License for more details.\n"
83 const char *wpa_supplicant_full_license2
=
84 "You should have received a copy of the GNU General Public License\n"
85 "along with this program; if not, write to the Free Software\n"
86 "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\n"
88 "Alternatively, this software may be distributed under the terms of the\n"
91 "Redistribution and use in source and binary forms, with or without\n"
92 "modification, are permitted provided that the following conditions are\n"
95 const char *wpa_supplicant_full_license3
=
96 "1. Redistributions of source code must retain the above copyright\n"
97 " notice, this list of conditions and the following disclaimer.\n"
99 "2. Redistributions in binary form must reproduce the above copyright\n"
100 " notice, this list of conditions and the following disclaimer in the\n"
101 " documentation and/or other materials provided with the distribution.\n"
103 const char *wpa_supplicant_full_license4
=
104 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
105 " names of its contributors may be used to endorse or promote products\n"
106 " derived from this software without specific prior written permission.\n"
108 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
109 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
110 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
111 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
112 const char *wpa_supplicant_full_license5
=
113 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
114 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
115 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
116 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
117 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
118 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
119 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
121 #endif /* CONFIG_NO_STDOUT_DEBUG */
123 extern int wpa_debug_level
;
124 extern int wpa_debug_show_keys
;
125 extern int wpa_debug_timestamp
;
126 extern struct wpa_driver_ops
*wpa_drivers
[];
128 /* Configure default/group WEP keys for static WEP */
129 int wpa_set_wep_keys(struct wpa_supplicant
*wpa_s
, struct wpa_ssid
*ssid
)
133 for (i
= 0; i
< NUM_WEP_KEYS
; i
++) {
134 if (ssid
->wep_key_len
[i
] == 0)
138 wpa_drv_set_key(wpa_s
, WPA_ALG_WEP
, NULL
,
139 i
, i
== ssid
->wep_tx_keyidx
, NULL
, 0,
140 ssid
->wep_key
[i
], ssid
->wep_key_len
[i
]);
147 static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant
*wpa_s
,
148 struct wpa_ssid
*ssid
)
155 /* IBSS/WPA-None uses only one key (Group) for both receiving and
156 * sending unicast and multicast packets. */
158 if (ssid
->mode
!= WPAS_MODE_IBSS
) {
159 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Invalid mode %d (not "
160 "IBSS/ad-hoc) for WPA-None", ssid
->mode
);
164 if (!ssid
->psk_set
) {
165 wpa_msg(wpa_s
, MSG_INFO
, "WPA: No PSK configured for "
170 switch (wpa_s
->group_cipher
) {
171 case WPA_CIPHER_CCMP
:
172 os_memcpy(key
, ssid
->psk
, 16);
176 case WPA_CIPHER_TKIP
:
177 /* WPA-None uses the same Michael MIC key for both TX and RX */
178 os_memcpy(key
, ssid
->psk
, 16 + 8);
179 os_memcpy(key
+ 16 + 8, ssid
->psk
+ 16, 8);
184 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Invalid group cipher %d for "
185 "WPA-None", wpa_s
->group_cipher
);
189 /* TODO: should actually remember the previously used seq#, both for TX
190 * and RX from each STA.. */
192 return wpa_drv_set_key(wpa_s
, alg
, NULL
, 0, 1, seq
, 6, key
, keylen
);
196 static void wpa_supplicant_timeout(void *eloop_ctx
, void *timeout_ctx
)
198 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
199 const u8
*bssid
= wpa_s
->bssid
;
200 if (is_zero_ether_addr(bssid
))
201 bssid
= wpa_s
->pending_bssid
;
202 wpa_msg(wpa_s
, MSG_INFO
, "Authentication with " MACSTR
" timed out.",
204 wpa_blacklist_add(wpa_s
, bssid
);
205 wpa_sm_notify_disassoc(wpa_s
->wpa
);
206 wpa_supplicant_disassociate(wpa_s
, WLAN_REASON_DEAUTH_LEAVING
);
207 wpa_s
->reassociate
= 1;
210 * If we timed out, the AP or the local radio may be busy.
211 * So, wait a second until scanning again.
213 wpa_supplicant_req_scan(wpa_s
, 1, 0);
218 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
219 * @wpa_s: Pointer to wpa_supplicant data
220 * @sec: Number of seconds after which to time out authentication
221 * @usec: Number of microseconds after which to time out authentication
223 * This function is used to schedule a timeout for the current authentication
226 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant
*wpa_s
,
229 if (wpa_s
->conf
&& wpa_s
->conf
->ap_scan
== 0 &&
230 (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_WIRED
))
233 wpa_dbg(wpa_s
, MSG_DEBUG
, "Setting authentication timeout: %d sec "
234 "%d usec", sec
, usec
);
235 eloop_cancel_timeout(wpa_supplicant_timeout
, wpa_s
, NULL
);
236 eloop_register_timeout(sec
, usec
, wpa_supplicant_timeout
, wpa_s
, NULL
);
241 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
242 * @wpa_s: Pointer to wpa_supplicant data
244 * This function is used to cancel authentication timeout scheduled with
245 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
248 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant
*wpa_s
)
250 wpa_dbg(wpa_s
, MSG_DEBUG
, "Cancelling authentication timeout");
251 eloop_cancel_timeout(wpa_supplicant_timeout
, wpa_s
, NULL
);
252 wpa_blacklist_del(wpa_s
, wpa_s
->bssid
);
257 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
258 * @wpa_s: Pointer to wpa_supplicant data
260 * This function is used to configure EAPOL state machine based on the selected
261 * authentication mode.
263 void wpa_supplicant_initiate_eapol(struct wpa_supplicant
*wpa_s
)
265 #ifdef IEEE8021X_EAPOL
266 struct eapol_config eapol_conf
;
267 struct wpa_ssid
*ssid
= wpa_s
->current_ssid
;
269 #ifdef CONFIG_IBSS_RSN
270 if (ssid
->mode
== WPAS_MODE_IBSS
&&
271 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_NONE
&&
272 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_WPA_NONE
) {
274 * RSN IBSS authentication is per-STA and we can disable the
275 * per-BSSID EAPOL authentication.
277 eapol_sm_notify_portControl(wpa_s
->eapol
, ForceAuthorized
);
278 eapol_sm_notify_eap_success(wpa_s
->eapol
, TRUE
);
279 eapol_sm_notify_eap_fail(wpa_s
->eapol
, FALSE
);
282 #endif /* CONFIG_IBSS_RSN */
284 eapol_sm_notify_eap_success(wpa_s
->eapol
, FALSE
);
285 eapol_sm_notify_eap_fail(wpa_s
->eapol
, FALSE
);
287 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_NONE
||
288 wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPA_NONE
)
289 eapol_sm_notify_portControl(wpa_s
->eapol
, ForceAuthorized
);
291 eapol_sm_notify_portControl(wpa_s
->eapol
, Auto
);
293 os_memset(&eapol_conf
, 0, sizeof(eapol_conf
));
294 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_IEEE8021X_NO_WPA
) {
295 eapol_conf
.accept_802_1x_keys
= 1;
296 eapol_conf
.required_keys
= 0;
297 if (ssid
->eapol_flags
& EAPOL_FLAG_REQUIRE_KEY_UNICAST
) {
298 eapol_conf
.required_keys
|= EAPOL_REQUIRE_KEY_UNICAST
;
300 if (ssid
->eapol_flags
& EAPOL_FLAG_REQUIRE_KEY_BROADCAST
) {
301 eapol_conf
.required_keys
|=
302 EAPOL_REQUIRE_KEY_BROADCAST
;
305 if (wpa_s
->conf
&& (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_WIRED
))
306 eapol_conf
.required_keys
= 0;
309 eapol_conf
.fast_reauth
= wpa_s
->conf
->fast_reauth
;
310 eapol_conf
.workaround
= ssid
->eap_workaround
;
311 eapol_conf
.eap_disabled
=
312 !wpa_key_mgmt_wpa_ieee8021x(wpa_s
->key_mgmt
) &&
313 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_IEEE8021X_NO_WPA
&&
314 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_WPS
;
315 eapol_sm_notify_config(wpa_s
->eapol
, &ssid
->eap
, &eapol_conf
);
316 #endif /* IEEE8021X_EAPOL */
321 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
322 * @wpa_s: Pointer to wpa_supplicant data
323 * @ssid: Configuration data for the network
325 * This function is used to configure WPA state machine and related parameters
326 * to a mode where WPA is not enabled. This is called as part of the
327 * authentication configuration when the selected network does not use WPA.
329 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant
*wpa_s
,
330 struct wpa_ssid
*ssid
)
334 if (ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
)
335 wpa_s
->key_mgmt
= WPA_KEY_MGMT_WPS
;
336 else if (ssid
->key_mgmt
& WPA_KEY_MGMT_IEEE8021X_NO_WPA
)
337 wpa_s
->key_mgmt
= WPA_KEY_MGMT_IEEE8021X_NO_WPA
;
339 wpa_s
->key_mgmt
= WPA_KEY_MGMT_NONE
;
340 wpa_sm_set_ap_wpa_ie(wpa_s
->wpa
, NULL
, 0);
341 wpa_sm_set_ap_rsn_ie(wpa_s
->wpa
, NULL
, 0);
342 wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, NULL
, 0);
343 wpa_s
->pairwise_cipher
= WPA_CIPHER_NONE
;
344 wpa_s
->group_cipher
= WPA_CIPHER_NONE
;
345 wpa_s
->mgmt_group_cipher
= 0;
347 for (i
= 0; i
< NUM_WEP_KEYS
; i
++) {
348 if (ssid
->wep_key_len
[i
] > 5) {
349 wpa_s
->pairwise_cipher
= WPA_CIPHER_WEP104
;
350 wpa_s
->group_cipher
= WPA_CIPHER_WEP104
;
352 } else if (ssid
->wep_key_len
[i
] > 0) {
353 wpa_s
->pairwise_cipher
= WPA_CIPHER_WEP40
;
354 wpa_s
->group_cipher
= WPA_CIPHER_WEP40
;
359 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_RSN_ENABLED
, 0);
360 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_KEY_MGMT
, wpa_s
->key_mgmt
);
361 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_PAIRWISE
,
362 wpa_s
->pairwise_cipher
);
363 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_GROUP
, wpa_s
->group_cipher
);
364 #ifdef CONFIG_IEEE80211W
365 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_MGMT_GROUP
,
366 wpa_s
->mgmt_group_cipher
);
367 #endif /* CONFIG_IEEE80211W */
369 pmksa_cache_clear_current(wpa_s
->wpa
);
373 static void free_hw_features(struct wpa_supplicant
*wpa_s
)
376 if (wpa_s
->hw
.modes
== NULL
)
379 for (i
= 0; i
< wpa_s
->hw
.num_modes
; i
++) {
380 os_free(wpa_s
->hw
.modes
[i
].channels
);
381 os_free(wpa_s
->hw
.modes
[i
].rates
);
384 os_free(wpa_s
->hw
.modes
);
385 wpa_s
->hw
.modes
= NULL
;
389 static void wpa_supplicant_cleanup(struct wpa_supplicant
*wpa_s
)
391 bgscan_deinit(wpa_s
);
392 scard_deinit(wpa_s
->scard
);
394 wpa_sm_set_scard_ctx(wpa_s
->wpa
, NULL
);
395 eapol_sm_register_scard_ctx(wpa_s
->eapol
, NULL
);
396 l2_packet_deinit(wpa_s
->l2
);
399 l2_packet_deinit(wpa_s
->l2_br
);
403 if (wpa_s
->conf
!= NULL
) {
404 struct wpa_ssid
*ssid
;
405 for (ssid
= wpa_s
->conf
->ssid
; ssid
; ssid
= ssid
->next
)
406 wpas_notify_network_removed(wpa_s
, ssid
);
409 os_free(wpa_s
->confname
);
410 wpa_s
->confname
= NULL
;
412 wpa_sm_set_eapol(wpa_s
->wpa
, NULL
);
413 eapol_sm_deinit(wpa_s
->eapol
);
416 rsn_preauth_deinit(wpa_s
->wpa
);
419 wpa_tdls_deinit(wpa_s
->wpa
);
420 #endif /* CONFIG_TDLS */
422 pmksa_candidate_free(wpa_s
->wpa
);
423 wpa_sm_deinit(wpa_s
->wpa
);
425 wpa_blacklist_clear(wpa_s
);
427 wpa_bss_deinit(wpa_s
);
429 wpa_supplicant_cancel_scan(wpa_s
);
430 wpa_supplicant_cancel_auth_timeout(wpa_s
);
431 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures
, wpa_s
, NULL
);
432 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
433 eloop_cancel_timeout(wpa_supplicant_delayed_mic_error_report
,
435 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
437 wpas_wps_deinit(wpa_s
);
439 wpabuf_free(wpa_s
->pending_eapol_rx
);
440 wpa_s
->pending_eapol_rx
= NULL
;
442 #ifdef CONFIG_IBSS_RSN
443 ibss_rsn_deinit(wpa_s
->ibss_rsn
);
444 wpa_s
->ibss_rsn
= NULL
;
445 #endif /* CONFIG_IBSS_RSN */
450 wpa_supplicant_ap_deinit(wpa_s
);
451 #endif /* CONFIG_AP */
454 wpas_p2p_deinit(wpa_s
);
455 #endif /* CONFIG_P2P */
457 #ifdef CONFIG_OFFCHANNEL
458 offchannel_deinit(wpa_s
);
459 #endif /* CONFIG_OFFCHANNEL */
461 wpa_supplicant_cancel_sched_scan(wpa_s
);
463 os_free(wpa_s
->next_scan_freqs
);
464 wpa_s
->next_scan_freqs
= NULL
;
466 gas_query_deinit(wpa_s
->gas
);
469 free_hw_features(wpa_s
);
474 * wpa_clear_keys - Clear keys configured for the driver
475 * @wpa_s: Pointer to wpa_supplicant data
476 * @addr: Previously used BSSID or %NULL if not available
478 * This function clears the encryption keys that has been previously configured
481 void wpa_clear_keys(struct wpa_supplicant
*wpa_s
, const u8
*addr
)
483 if (wpa_s
->keys_cleared
) {
484 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
485 * timing issues with keys being cleared just before new keys
486 * are set or just after association or something similar. This
487 * shows up in group key handshake failing often because of the
488 * client not receiving the first encrypted packets correctly.
489 * Skipping some of the extra key clearing steps seems to help
490 * in completing group key handshake more reliably. */
491 wpa_dbg(wpa_s
, MSG_DEBUG
, "No keys have been configured - "
492 "skip key clearing");
496 /* MLME-DELETEKEYS.request */
497 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, NULL
, 0, 0, NULL
, 0, NULL
, 0);
498 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, NULL
, 1, 0, NULL
, 0, NULL
, 0);
499 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, NULL
, 2, 0, NULL
, 0, NULL
, 0);
500 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, NULL
, 3, 0, NULL
, 0, NULL
, 0);
501 #ifdef CONFIG_IEEE80211W
502 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, NULL
, 4, 0, NULL
, 0, NULL
, 0);
503 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, NULL
, 5, 0, NULL
, 0, NULL
, 0);
504 #endif /* CONFIG_IEEE80211W */
506 wpa_drv_set_key(wpa_s
, WPA_ALG_NONE
, addr
, 0, 0, NULL
, 0, NULL
,
508 /* MLME-SETPROTECTION.request(None) */
509 wpa_drv_mlme_setprotection(
511 MLME_SETPROTECTION_PROTECT_TYPE_NONE
,
512 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE
);
514 wpa_s
->keys_cleared
= 1;
519 * wpa_supplicant_state_txt - Get the connection state name as a text string
520 * @state: State (wpa_state; WPA_*)
521 * Returns: The state name as a printable text string
523 const char * wpa_supplicant_state_txt(enum wpa_states state
)
526 case WPA_DISCONNECTED
:
527 return "DISCONNECTED";
530 case WPA_INTERFACE_DISABLED
:
531 return "INTERFACE_DISABLED";
534 case WPA_AUTHENTICATING
:
535 return "AUTHENTICATING";
536 case WPA_ASSOCIATING
:
537 return "ASSOCIATING";
540 case WPA_4WAY_HANDSHAKE
:
541 return "4WAY_HANDSHAKE";
542 case WPA_GROUP_HANDSHAKE
:
543 return "GROUP_HANDSHAKE";
554 static void wpa_supplicant_start_bgscan(struct wpa_supplicant
*wpa_s
)
556 if (wpas_driver_bss_selection(wpa_s
))
558 if (wpa_s
->current_ssid
== wpa_s
->bgscan_ssid
)
561 bgscan_deinit(wpa_s
);
562 if (wpa_s
->current_ssid
&& wpa_s
->current_ssid
->bgscan
) {
563 if (bgscan_init(wpa_s
, wpa_s
->current_ssid
)) {
564 wpa_dbg(wpa_s
, MSG_DEBUG
, "Failed to initialize "
567 * Live without bgscan; it is only used as a roaming
568 * optimization, so the initial connection is not
572 wpa_s
->bgscan_ssid
= wpa_s
->current_ssid
;
574 wpa_s
->bgscan_ssid
= NULL
;
578 static void wpa_supplicant_stop_bgscan(struct wpa_supplicant
*wpa_s
)
580 if (wpa_s
->bgscan_ssid
!= NULL
) {
581 bgscan_deinit(wpa_s
);
582 wpa_s
->bgscan_ssid
= NULL
;
586 #endif /* CONFIG_BGSCAN */
590 * wpa_supplicant_set_state - Set current connection state
591 * @wpa_s: Pointer to wpa_supplicant data
592 * @state: The new connection state
594 * This function is called whenever the connection state changes, e.g.,
595 * association is completed for WPA/WPA2 4-Way Handshake is started.
597 void wpa_supplicant_set_state(struct wpa_supplicant
*wpa_s
,
598 enum wpa_states state
)
600 enum wpa_states old_state
= wpa_s
->wpa_state
;
602 wpa_dbg(wpa_s
, MSG_DEBUG
, "State: %s -> %s",
603 wpa_supplicant_state_txt(wpa_s
->wpa_state
),
604 wpa_supplicant_state_txt(state
));
606 if (state
!= WPA_SCANNING
)
607 wpa_supplicant_notify_scanning(wpa_s
, 0);
609 if (state
== WPA_COMPLETED
&& wpa_s
->new_connection
) {
610 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
611 struct wpa_ssid
*ssid
= wpa_s
->current_ssid
;
612 wpa_msg(wpa_s
, MSG_INFO
, WPA_EVENT_CONNECTED
"- Connection to "
613 MACSTR
" completed %s [id=%d id_str=%s]",
614 MAC2STR(wpa_s
->bssid
), wpa_s
->reassociated_connection
?
615 "(reauth)" : "(auth)",
616 ssid
? ssid
->id
: -1,
617 ssid
&& ssid
->id_str
? ssid
->id_str
: "");
618 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
619 wpa_s
->new_connection
= 0;
620 wpa_s
->reassociated_connection
= 1;
621 wpa_drv_set_operstate(wpa_s
, 1);
622 #ifndef IEEE8021X_EAPOL
623 wpa_drv_set_supp_port(wpa_s
, 1);
624 #endif /* IEEE8021X_EAPOL */
625 wpa_s
->after_wps
= 0;
627 wpas_p2p_completed(wpa_s
);
628 #endif /* CONFIG_P2P */
629 } else if (state
== WPA_DISCONNECTED
|| state
== WPA_ASSOCIATING
||
630 state
== WPA_ASSOCIATED
) {
631 wpa_s
->new_connection
= 1;
632 wpa_drv_set_operstate(wpa_s
, 0);
633 #ifndef IEEE8021X_EAPOL
634 wpa_drv_set_supp_port(wpa_s
, 0);
635 #endif /* IEEE8021X_EAPOL */
637 wpa_s
->wpa_state
= state
;
640 if (state
== WPA_COMPLETED
)
641 wpa_supplicant_start_bgscan(wpa_s
);
643 wpa_supplicant_stop_bgscan(wpa_s
);
644 #endif /* CONFIG_BGSCAN */
646 if (wpa_s
->wpa_state
!= old_state
) {
647 wpas_notify_state_changed(wpa_s
, wpa_s
->wpa_state
, old_state
);
649 if (wpa_s
->wpa_state
== WPA_COMPLETED
||
650 old_state
== WPA_COMPLETED
)
651 wpas_notify_auth_changed(wpa_s
);
656 void wpa_supplicant_terminate_proc(struct wpa_global
*global
)
660 struct wpa_supplicant
*wpa_s
= global
->ifaces
;
662 if (wpas_wps_terminate_pending(wpa_s
) == 1)
666 #endif /* CONFIG_WPS */
673 static void wpa_supplicant_terminate(int sig
, void *signal_ctx
)
675 struct wpa_global
*global
= signal_ctx
;
676 wpa_supplicant_terminate_proc(global
);
680 void wpa_supplicant_clear_status(struct wpa_supplicant
*wpa_s
)
682 enum wpa_states old_state
= wpa_s
->wpa_state
;
684 wpa_s
->pairwise_cipher
= 0;
685 wpa_s
->group_cipher
= 0;
686 wpa_s
->mgmt_group_cipher
= 0;
688 if (wpa_s
->wpa_state
!= WPA_INTERFACE_DISABLED
)
689 wpa_s
->wpa_state
= WPA_DISCONNECTED
;
691 if (wpa_s
->wpa_state
!= old_state
)
692 wpas_notify_state_changed(wpa_s
, wpa_s
->wpa_state
, old_state
);
697 * wpa_supplicant_reload_configuration - Reload configuration data
698 * @wpa_s: Pointer to wpa_supplicant data
699 * Returns: 0 on success or -1 if configuration parsing failed
701 * This function can be used to request that the configuration data is reloaded
702 * (e.g., after configuration file change). This function is reloading
703 * configuration only for one interface, so this may need to be called multiple
704 * times if %wpa_supplicant is controlling multiple interfaces and all
705 * interfaces need reconfiguration.
707 int wpa_supplicant_reload_configuration(struct wpa_supplicant
*wpa_s
)
709 struct wpa_config
*conf
;
713 if (wpa_s
->confname
== NULL
)
715 conf
= wpa_config_read(wpa_s
->confname
);
717 wpa_msg(wpa_s
, MSG_ERROR
, "Failed to parse the configuration "
718 "file '%s' - exiting", wpa_s
->confname
);
721 conf
->changed_parameters
= (unsigned int) -1;
723 reconf_ctrl
= !!conf
->ctrl_interface
!= !!wpa_s
->conf
->ctrl_interface
724 || (conf
->ctrl_interface
&& wpa_s
->conf
->ctrl_interface
&&
725 os_strcmp(conf
->ctrl_interface
,
726 wpa_s
->conf
->ctrl_interface
) != 0);
728 if (reconf_ctrl
&& wpa_s
->ctrl_iface
) {
729 wpa_supplicant_ctrl_iface_deinit(wpa_s
->ctrl_iface
);
730 wpa_s
->ctrl_iface
= NULL
;
733 eapol_sm_invalidate_cached_session(wpa_s
->eapol
);
734 if (wpa_s
->current_ssid
) {
735 wpa_supplicant_deauthenticate(wpa_s
,
736 WLAN_REASON_DEAUTH_LEAVING
);
740 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
741 * pkcs11_engine_path, pkcs11_module_path.
743 if (wpa_key_mgmt_wpa_psk(wpa_s
->key_mgmt
)) {
745 * Clear forced success to clear EAP state for next
748 eapol_sm_notify_eap_success(wpa_s
->eapol
, FALSE
);
750 eapol_sm_notify_config(wpa_s
->eapol
, NULL
, NULL
);
751 wpa_sm_set_config(wpa_s
->wpa
, NULL
);
752 wpa_sm_pmksa_cache_flush(wpa_s
->wpa
, NULL
);
753 wpa_sm_set_fast_reauth(wpa_s
->wpa
, wpa_s
->conf
->fast_reauth
);
754 rsn_preauth_deinit(wpa_s
->wpa
);
756 old_ap_scan
= wpa_s
->conf
->ap_scan
;
757 wpa_config_free(wpa_s
->conf
);
759 if (old_ap_scan
!= wpa_s
->conf
->ap_scan
)
760 wpas_notify_ap_scan_changed(wpa_s
);
763 wpa_s
->ctrl_iface
= wpa_supplicant_ctrl_iface_init(wpa_s
);
765 wpa_supplicant_update_config(wpa_s
);
767 wpa_supplicant_clear_status(wpa_s
);
768 if (wpa_supplicant_enabled_networks(wpa_s
->conf
)) {
769 wpa_s
->reassociate
= 1;
770 wpa_supplicant_req_scan(wpa_s
, 0, 0);
772 wpa_dbg(wpa_s
, MSG_DEBUG
, "Reconfiguration completed");
777 static void wpa_supplicant_reconfig(int sig
, void *signal_ctx
)
779 struct wpa_global
*global
= signal_ctx
;
780 struct wpa_supplicant
*wpa_s
;
781 for (wpa_s
= global
->ifaces
; wpa_s
; wpa_s
= wpa_s
->next
) {
782 wpa_dbg(wpa_s
, MSG_DEBUG
, "Signal %d received - reconfiguring",
784 if (wpa_supplicant_reload_configuration(wpa_s
) < 0) {
785 wpa_supplicant_terminate_proc(global
);
791 enum wpa_cipher
cipher_suite2driver(int cipher
)
794 case WPA_CIPHER_NONE
:
796 case WPA_CIPHER_WEP40
:
798 case WPA_CIPHER_WEP104
:
799 return CIPHER_WEP104
;
800 case WPA_CIPHER_CCMP
:
802 case WPA_CIPHER_TKIP
:
809 enum wpa_key_mgmt
key_mgmt2driver(int key_mgmt
)
812 case WPA_KEY_MGMT_NONE
:
813 return KEY_MGMT_NONE
;
814 case WPA_KEY_MGMT_IEEE8021X_NO_WPA
:
815 return KEY_MGMT_802_1X_NO_WPA
;
816 case WPA_KEY_MGMT_IEEE8021X
:
817 return KEY_MGMT_802_1X
;
818 case WPA_KEY_MGMT_WPA_NONE
:
819 return KEY_MGMT_WPA_NONE
;
820 case WPA_KEY_MGMT_FT_IEEE8021X
:
821 return KEY_MGMT_FT_802_1X
;
822 case WPA_KEY_MGMT_FT_PSK
:
823 return KEY_MGMT_FT_PSK
;
824 case WPA_KEY_MGMT_IEEE8021X_SHA256
:
825 return KEY_MGMT_802_1X_SHA256
;
826 case WPA_KEY_MGMT_PSK_SHA256
:
827 return KEY_MGMT_PSK_SHA256
;
828 case WPA_KEY_MGMT_WPS
:
830 case WPA_KEY_MGMT_PSK
:
837 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant
*wpa_s
,
838 struct wpa_ssid
*ssid
,
839 struct wpa_ie_data
*ie
)
841 int ret
= wpa_sm_parse_own_wpa_ie(wpa_s
->wpa
, ie
);
844 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Failed to parse WPA IE "
845 "from association info");
850 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: Using WPA IE from AssocReq to set "
852 if (!(ie
->group_cipher
& ssid
->group_cipher
)) {
853 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Driver used disabled group "
854 "cipher 0x%x (mask 0x%x) - reject",
855 ie
->group_cipher
, ssid
->group_cipher
);
858 if (!(ie
->pairwise_cipher
& ssid
->pairwise_cipher
)) {
859 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Driver used disabled pairwise "
860 "cipher 0x%x (mask 0x%x) - reject",
861 ie
->pairwise_cipher
, ssid
->pairwise_cipher
);
864 if (!(ie
->key_mgmt
& ssid
->key_mgmt
)) {
865 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Driver used disabled key "
866 "management 0x%x (mask 0x%x) - reject",
867 ie
->key_mgmt
, ssid
->key_mgmt
);
871 #ifdef CONFIG_IEEE80211W
872 if (!(ie
->capabilities
& WPA_CAPABILITY_MFPC
) &&
873 ssid
->ieee80211w
== MGMT_FRAME_PROTECTION_REQUIRED
) {
874 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Driver associated with an AP "
875 "that does not support management frame protection - "
879 #endif /* CONFIG_IEEE80211W */
886 * wpa_supplicant_set_suites - Set authentication and encryption parameters
887 * @wpa_s: Pointer to wpa_supplicant data
888 * @bss: Scan results for the selected BSS, or %NULL if not available
889 * @ssid: Configuration data for the selected network
890 * @wpa_ie: Buffer for the WPA/RSN IE
891 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
892 * used buffer length in case the functions returns success.
893 * Returns: 0 on success or -1 on failure
895 * This function is used to configure authentication and encryption parameters
896 * based on the network configuration and scan result for the selected BSS (if
899 int wpa_supplicant_set_suites(struct wpa_supplicant
*wpa_s
,
900 struct wpa_bss
*bss
, struct wpa_ssid
*ssid
,
901 u8
*wpa_ie
, size_t *wpa_ie_len
)
903 struct wpa_ie_data ie
;
905 const u8
*bss_wpa
, *bss_rsn
;
908 bss_wpa
= wpa_bss_get_vendor_ie(bss
, WPA_IE_VENDOR_TYPE
);
909 bss_rsn
= wpa_bss_get_ie(bss
, WLAN_EID_RSN
);
911 bss_wpa
= bss_rsn
= NULL
;
913 if (bss_rsn
&& (ssid
->proto
& WPA_PROTO_RSN
) &&
914 wpa_parse_wpa_ie(bss_rsn
, 2 + bss_rsn
[1], &ie
) == 0 &&
915 (ie
.group_cipher
& ssid
->group_cipher
) &&
916 (ie
.pairwise_cipher
& ssid
->pairwise_cipher
) &&
917 (ie
.key_mgmt
& ssid
->key_mgmt
)) {
918 wpa_dbg(wpa_s
, MSG_DEBUG
, "RSN: using IEEE 802.11i/D9.0");
919 proto
= WPA_PROTO_RSN
;
920 } else if (bss_wpa
&& (ssid
->proto
& WPA_PROTO_WPA
) &&
921 wpa_parse_wpa_ie(bss_wpa
, 2 +bss_wpa
[1], &ie
) == 0 &&
922 (ie
.group_cipher
& ssid
->group_cipher
) &&
923 (ie
.pairwise_cipher
& ssid
->pairwise_cipher
) &&
924 (ie
.key_mgmt
& ssid
->key_mgmt
)) {
925 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using IEEE 802.11i/D3.0");
926 proto
= WPA_PROTO_WPA
;
928 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to select WPA/RSN");
931 if (ssid
->proto
& WPA_PROTO_RSN
)
932 proto
= WPA_PROTO_RSN
;
934 proto
= WPA_PROTO_WPA
;
935 if (wpa_supplicant_suites_from_ai(wpa_s
, ssid
, &ie
) < 0) {
936 os_memset(&ie
, 0, sizeof(ie
));
937 ie
.group_cipher
= ssid
->group_cipher
;
938 ie
.pairwise_cipher
= ssid
->pairwise_cipher
;
939 ie
.key_mgmt
= ssid
->key_mgmt
;
940 #ifdef CONFIG_IEEE80211W
941 ie
.mgmt_group_cipher
=
942 ssid
->ieee80211w
!= NO_MGMT_FRAME_PROTECTION
?
943 WPA_CIPHER_AES_128_CMAC
: 0;
944 #endif /* CONFIG_IEEE80211W */
945 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: Set cipher suites "
946 "based on configuration");
951 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: Selected cipher suites: group %d "
952 "pairwise %d key_mgmt %d proto %d",
953 ie
.group_cipher
, ie
.pairwise_cipher
, ie
.key_mgmt
, proto
);
954 #ifdef CONFIG_IEEE80211W
955 if (ssid
->ieee80211w
) {
956 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: Selected mgmt group cipher %d",
957 ie
.mgmt_group_cipher
);
959 #endif /* CONFIG_IEEE80211W */
961 wpa_s
->wpa_proto
= proto
;
962 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_PROTO
, proto
);
963 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_RSN_ENABLED
,
964 !!(ssid
->proto
& WPA_PROTO_RSN
));
966 if (bss
|| !wpa_s
->ap_ies_from_associnfo
) {
967 if (wpa_sm_set_ap_wpa_ie(wpa_s
->wpa
, bss_wpa
,
968 bss_wpa
? 2 + bss_wpa
[1] : 0) ||
969 wpa_sm_set_ap_rsn_ie(wpa_s
->wpa
, bss_rsn
,
970 bss_rsn
? 2 + bss_rsn
[1] : 0))
974 sel
= ie
.group_cipher
& ssid
->group_cipher
;
975 if (sel
& WPA_CIPHER_CCMP
) {
976 wpa_s
->group_cipher
= WPA_CIPHER_CCMP
;
977 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using GTK CCMP");
978 } else if (sel
& WPA_CIPHER_TKIP
) {
979 wpa_s
->group_cipher
= WPA_CIPHER_TKIP
;
980 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using GTK TKIP");
981 } else if (sel
& WPA_CIPHER_WEP104
) {
982 wpa_s
->group_cipher
= WPA_CIPHER_WEP104
;
983 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using GTK WEP104");
984 } else if (sel
& WPA_CIPHER_WEP40
) {
985 wpa_s
->group_cipher
= WPA_CIPHER_WEP40
;
986 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using GTK WEP40");
988 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to select group "
993 sel
= ie
.pairwise_cipher
& ssid
->pairwise_cipher
;
994 if (sel
& WPA_CIPHER_CCMP
) {
995 wpa_s
->pairwise_cipher
= WPA_CIPHER_CCMP
;
996 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using PTK CCMP");
997 } else if (sel
& WPA_CIPHER_TKIP
) {
998 wpa_s
->pairwise_cipher
= WPA_CIPHER_TKIP
;
999 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using PTK TKIP");
1000 } else if (sel
& WPA_CIPHER_NONE
) {
1001 wpa_s
->pairwise_cipher
= WPA_CIPHER_NONE
;
1002 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using PTK NONE");
1004 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to select pairwise "
1009 sel
= ie
.key_mgmt
& ssid
->key_mgmt
;
1011 #ifdef CONFIG_IEEE80211R
1012 } else if (sel
& WPA_KEY_MGMT_FT_IEEE8021X
) {
1013 wpa_s
->key_mgmt
= WPA_KEY_MGMT_FT_IEEE8021X
;
1014 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using KEY_MGMT FT/802.1X");
1015 } else if (sel
& WPA_KEY_MGMT_FT_PSK
) {
1016 wpa_s
->key_mgmt
= WPA_KEY_MGMT_FT_PSK
;
1017 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using KEY_MGMT FT/PSK");
1018 #endif /* CONFIG_IEEE80211R */
1019 #ifdef CONFIG_IEEE80211W
1020 } else if (sel
& WPA_KEY_MGMT_IEEE8021X_SHA256
) {
1021 wpa_s
->key_mgmt
= WPA_KEY_MGMT_IEEE8021X_SHA256
;
1022 wpa_dbg(wpa_s
, MSG_DEBUG
,
1023 "WPA: using KEY_MGMT 802.1X with SHA256");
1024 } else if (sel
& WPA_KEY_MGMT_PSK_SHA256
) {
1025 wpa_s
->key_mgmt
= WPA_KEY_MGMT_PSK_SHA256
;
1026 wpa_dbg(wpa_s
, MSG_DEBUG
,
1027 "WPA: using KEY_MGMT PSK with SHA256");
1028 #endif /* CONFIG_IEEE80211W */
1029 } else if (sel
& WPA_KEY_MGMT_IEEE8021X
) {
1030 wpa_s
->key_mgmt
= WPA_KEY_MGMT_IEEE8021X
;
1031 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using KEY_MGMT 802.1X");
1032 } else if (sel
& WPA_KEY_MGMT_PSK
) {
1033 wpa_s
->key_mgmt
= WPA_KEY_MGMT_PSK
;
1034 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using KEY_MGMT WPA-PSK");
1035 } else if (sel
& WPA_KEY_MGMT_WPA_NONE
) {
1036 wpa_s
->key_mgmt
= WPA_KEY_MGMT_WPA_NONE
;
1037 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using KEY_MGMT WPA-NONE");
1039 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to select "
1040 "authenticated key management type");
1044 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_KEY_MGMT
, wpa_s
->key_mgmt
);
1045 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_PAIRWISE
,
1046 wpa_s
->pairwise_cipher
);
1047 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_GROUP
, wpa_s
->group_cipher
);
1049 #ifdef CONFIG_IEEE80211W
1050 sel
= ie
.mgmt_group_cipher
;
1051 if (ssid
->ieee80211w
== NO_MGMT_FRAME_PROTECTION
||
1052 !(ie
.capabilities
& WPA_CAPABILITY_MFPC
))
1054 if (sel
& WPA_CIPHER_AES_128_CMAC
) {
1055 wpa_s
->mgmt_group_cipher
= WPA_CIPHER_AES_128_CMAC
;
1056 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: using MGMT group cipher "
1059 wpa_s
->mgmt_group_cipher
= 0;
1060 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: not using MGMT group cipher");
1062 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_MGMT_GROUP
,
1063 wpa_s
->mgmt_group_cipher
);
1064 wpa_sm_set_param(wpa_s
->wpa
, WPA_PARAM_MFP
, ssid
->ieee80211w
);
1065 #endif /* CONFIG_IEEE80211W */
1067 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s
->wpa
, wpa_ie
, wpa_ie_len
)) {
1068 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to generate WPA IE");
1072 if (wpa_key_mgmt_wpa_psk(ssid
->key_mgmt
)) {
1073 wpa_sm_set_pmk(wpa_s
->wpa
, ssid
->psk
, PMK_LEN
);
1074 #ifndef CONFIG_NO_PBKDF2
1075 if (bss
&& ssid
->bssid_set
&& ssid
->ssid_len
== 0 &&
1078 pbkdf2_sha1(ssid
->passphrase
, (char *) bss
->ssid
,
1079 bss
->ssid_len
, 4096, psk
, PMK_LEN
);
1080 wpa_hexdump_key(MSG_MSGDUMP
, "PSK (from passphrase)",
1082 wpa_sm_set_pmk(wpa_s
->wpa
, psk
, PMK_LEN
);
1084 #endif /* CONFIG_NO_PBKDF2 */
1086 wpa_sm_set_pmk_from_pmksa(wpa_s
->wpa
);
1093 * wpa_supplicant_associate - Request association
1094 * @wpa_s: Pointer to wpa_supplicant data
1095 * @bss: Scan results for the selected BSS, or %NULL if not available
1096 * @ssid: Configuration data for the selected network
1098 * This function is used to request %wpa_supplicant to associate with a BSS.
1100 void wpa_supplicant_associate(struct wpa_supplicant
*wpa_s
,
1101 struct wpa_bss
*bss
, struct wpa_ssid
*ssid
)
1105 int use_crypt
, ret
, i
, bssid_changed
;
1106 int algs
= WPA_AUTH_ALG_OPEN
;
1107 enum wpa_cipher cipher_pairwise
, cipher_group
;
1108 struct wpa_driver_associate_params params
;
1109 int wep_keys_set
= 0;
1110 struct wpa_driver_capa capa
;
1111 int assoc_failed
= 0;
1112 struct wpa_ssid
*old_ssid
;
1113 #ifdef CONFIG_HT_OVERRIDES
1114 struct ieee80211_ht_capabilities htcaps
;
1115 struct ieee80211_ht_capabilities htcaps_mask
;
1116 #endif /* CONFIG_HT_OVERRIDES */
1118 #ifdef CONFIG_IBSS_RSN
1119 ibss_rsn_deinit(wpa_s
->ibss_rsn
);
1120 wpa_s
->ibss_rsn
= NULL
;
1121 #endif /* CONFIG_IBSS_RSN */
1123 if (ssid
->mode
== WPAS_MODE_AP
|| ssid
->mode
== WPAS_MODE_P2P_GO
||
1124 ssid
->mode
== WPAS_MODE_P2P_GROUP_FORMATION
) {
1126 if (!(wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_AP
)) {
1127 wpa_msg(wpa_s
, MSG_INFO
, "Driver does not support AP "
1131 wpa_supplicant_create_ap(wpa_s
, ssid
);
1132 wpa_s
->current_bss
= bss
;
1133 #else /* CONFIG_AP */
1134 wpa_msg(wpa_s
, MSG_ERROR
, "AP mode support not included in "
1136 #endif /* CONFIG_AP */
1142 wpa_tdls_ap_ies(wpa_s
->wpa
, (const u8
*) (bss
+ 1),
1144 #endif /* CONFIG_TDLS */
1146 if ((wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_SME
) &&
1147 ssid
->mode
== IEEE80211_MODE_INFRA
) {
1148 sme_authenticate(wpa_s
, bss
, ssid
);
1152 os_memset(¶ms
, 0, sizeof(params
));
1153 wpa_s
->reassociate
= 0;
1154 if (bss
&& !wpas_driver_bss_selection(wpa_s
)) {
1155 #ifdef CONFIG_IEEE80211R
1156 const u8
*ie
, *md
= NULL
;
1157 #endif /* CONFIG_IEEE80211R */
1158 wpa_msg(wpa_s
, MSG_INFO
, "Trying to associate with " MACSTR
1159 " (SSID='%s' freq=%d MHz)", MAC2STR(bss
->bssid
),
1160 wpa_ssid_txt(bss
->ssid
, bss
->ssid_len
), bss
->freq
);
1161 bssid_changed
= !is_zero_ether_addr(wpa_s
->bssid
);
1162 os_memset(wpa_s
->bssid
, 0, ETH_ALEN
);
1163 os_memcpy(wpa_s
->pending_bssid
, bss
->bssid
, ETH_ALEN
);
1165 wpas_notify_bssid_changed(wpa_s
);
1166 #ifdef CONFIG_IEEE80211R
1167 ie
= wpa_bss_get_ie(bss
, WLAN_EID_MOBILITY_DOMAIN
);
1168 if (ie
&& ie
[1] >= MOBILITY_DOMAIN_ID_LEN
)
1170 wpa_sm_set_ft_params(wpa_s
->wpa
, ie
, ie
? 2 + ie
[1] : 0);
1172 /* Prepare for the next transition */
1173 wpa_ft_prepare_auth_request(wpa_s
->wpa
, ie
);
1175 #endif /* CONFIG_IEEE80211R */
1177 } else if ((ssid
->ssid
== NULL
|| ssid
->ssid_len
== 0) &&
1178 wpa_s
->conf
->ap_scan
== 2 &&
1179 (ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
)) {
1180 /* Use ap_scan==1 style network selection to find the network
1182 wpa_s
->scan_req
= 2;
1183 wpa_s
->reassociate
= 1;
1184 wpa_supplicant_req_scan(wpa_s
, 0, 0);
1186 #endif /* CONFIG_WPS */
1188 wpa_msg(wpa_s
, MSG_INFO
, "Trying to associate with SSID '%s'",
1189 wpa_ssid_txt(ssid
->ssid
, ssid
->ssid_len
));
1190 os_memset(wpa_s
->pending_bssid
, 0, ETH_ALEN
);
1192 wpa_supplicant_cancel_sched_scan(wpa_s
);
1193 wpa_supplicant_cancel_scan(wpa_s
);
1195 /* Starting new association, so clear the possibly used WPA IE from the
1196 * previous association. */
1197 wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, NULL
, 0);
1199 #ifdef IEEE8021X_EAPOL
1200 if (ssid
->key_mgmt
& WPA_KEY_MGMT_IEEE8021X_NO_WPA
) {
1202 if (ssid
->non_leap
== 0)
1203 algs
= WPA_AUTH_ALG_LEAP
;
1205 algs
|= WPA_AUTH_ALG_LEAP
;
1208 #endif /* IEEE8021X_EAPOL */
1209 wpa_dbg(wpa_s
, MSG_DEBUG
, "Automatic auth_alg selection: 0x%x", algs
);
1210 if (ssid
->auth_alg
) {
1211 algs
= ssid
->auth_alg
;
1212 wpa_dbg(wpa_s
, MSG_DEBUG
, "Overriding auth_alg selection: "
1216 if (bss
&& (wpa_bss_get_vendor_ie(bss
, WPA_IE_VENDOR_TYPE
) ||
1217 wpa_bss_get_ie(bss
, WLAN_EID_RSN
)) &&
1218 wpa_key_mgmt_wpa(ssid
->key_mgmt
)) {
1219 int try_opportunistic
;
1220 try_opportunistic
= ssid
->proactive_key_caching
&&
1221 (ssid
->proto
& WPA_PROTO_RSN
);
1222 if (pmksa_cache_set_current(wpa_s
->wpa
, NULL
, bss
->bssid
,
1223 wpa_s
->current_ssid
,
1224 try_opportunistic
) == 0)
1225 eapol_sm_notify_pmkid_attempt(wpa_s
->eapol
, 1);
1226 wpa_ie_len
= sizeof(wpa_ie
);
1227 if (wpa_supplicant_set_suites(wpa_s
, bss
, ssid
,
1228 wpa_ie
, &wpa_ie_len
)) {
1229 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to set WPA "
1230 "key management and encryption suites");
1233 } else if (wpa_key_mgmt_wpa_any(ssid
->key_mgmt
)) {
1234 wpa_ie_len
= sizeof(wpa_ie
);
1235 if (wpa_supplicant_set_suites(wpa_s
, NULL
, ssid
,
1236 wpa_ie
, &wpa_ie_len
)) {
1237 wpa_msg(wpa_s
, MSG_WARNING
, "WPA: Failed to set WPA "
1238 "key management and encryption suites (no "
1243 } else if (ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
) {
1244 struct wpabuf
*wps_ie
;
1245 wps_ie
= wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid
));
1246 if (wps_ie
&& wpabuf_len(wps_ie
) <= sizeof(wpa_ie
)) {
1247 wpa_ie_len
= wpabuf_len(wps_ie
);
1248 os_memcpy(wpa_ie
, wpabuf_head(wps_ie
), wpa_ie_len
);
1251 wpabuf_free(wps_ie
);
1252 wpa_supplicant_set_non_wpa_policy(wpa_s
, ssid
);
1253 if (!bss
|| (bss
->caps
& IEEE80211_CAP_PRIVACY
))
1254 params
.wps
= WPS_MODE_PRIVACY
;
1256 params
.wps
= WPS_MODE_OPEN
;
1257 wpa_s
->wpa_proto
= 0;
1258 #endif /* CONFIG_WPS */
1260 wpa_supplicant_set_non_wpa_policy(wpa_s
, ssid
);
1262 wpa_s
->wpa_proto
= 0;
1266 if (wpa_s
->global
->p2p
) {
1271 p2p_group
= wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_P2P_CAPABLE
;
1272 pos
= wpa_ie
+ wpa_ie_len
;
1273 len
= sizeof(wpa_ie
) - wpa_ie_len
;
1274 res
= wpas_p2p_assoc_req_ie(wpa_s
, bss
, pos
, len
, p2p_group
);
1279 wpa_s
->cross_connect_disallowed
= 0;
1282 p2p
= wpa_bss_get_vendor_ie_multi(bss
, P2P_IE_VENDOR_TYPE
);
1284 wpa_s
->cross_connect_disallowed
=
1285 p2p_get_cross_connect_disallowed(p2p
);
1287 wpa_dbg(wpa_s
, MSG_DEBUG
, "P2P: WLAN AP %s cross "
1289 wpa_s
->cross_connect_disallowed
?
1290 "disallows" : "allows");
1293 #endif /* CONFIG_P2P */
1295 #ifdef CONFIG_INTERWORKING
1296 if (wpa_s
->conf
->interworking
) {
1298 if (wpa_ie_len
> 0 && pos
[0] == WLAN_EID_RSN
)
1300 os_memmove(pos
+ 6, pos
, wpa_ie_len
- (pos
- wpa_ie
));
1302 *pos
++ = WLAN_EID_EXT_CAPAB
;
1307 *pos
++ = 0x80; /* Bit 31 - Interworking */
1309 #endif /* CONFIG_INTERWORKING */
1311 wpa_clear_keys(wpa_s
, bss
? bss
->bssid
: NULL
);
1313 cipher_pairwise
= cipher_suite2driver(wpa_s
->pairwise_cipher
);
1314 cipher_group
= cipher_suite2driver(wpa_s
->group_cipher
);
1315 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_NONE
||
1316 wpa_s
->key_mgmt
== WPA_KEY_MGMT_IEEE8021X_NO_WPA
) {
1317 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_NONE
)
1319 if (wpa_set_wep_keys(wpa_s
, ssid
)) {
1324 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPS
)
1327 #ifdef IEEE8021X_EAPOL
1328 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_IEEE8021X_NO_WPA
) {
1329 if ((ssid
->eapol_flags
&
1330 (EAPOL_FLAG_REQUIRE_KEY_UNICAST
|
1331 EAPOL_FLAG_REQUIRE_KEY_BROADCAST
)) == 0 &&
1335 /* Assume that dynamic WEP-104 keys will be used and
1336 * set cipher suites in order for drivers to expect
1338 cipher_pairwise
= cipher_group
= CIPHER_WEP104
;
1341 #endif /* IEEE8021X_EAPOL */
1343 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPA_NONE
) {
1344 /* Set the key before (and later after) association */
1345 wpa_supplicant_set_wpa_none_key(wpa_s
, ssid
);
1348 wpa_supplicant_set_state(wpa_s
, WPA_ASSOCIATING
);
1350 params
.ssid
= bss
->ssid
;
1351 params
.ssid_len
= bss
->ssid_len
;
1352 if (!wpas_driver_bss_selection(wpa_s
)) {
1353 params
.bssid
= bss
->bssid
;
1354 params
.freq
= bss
->freq
;
1357 params
.ssid
= ssid
->ssid
;
1358 params
.ssid_len
= ssid
->ssid_len
;
1361 if (ssid
->mode
== WPAS_MODE_IBSS
&& ssid
->bssid_set
&&
1362 wpa_s
->conf
->ap_scan
== 2) {
1363 params
.bssid
= ssid
->bssid
;
1364 params
.fixed_bssid
= 1;
1367 if (ssid
->mode
== WPAS_MODE_IBSS
&& ssid
->frequency
> 0 &&
1369 params
.freq
= ssid
->frequency
; /* Initial channel for IBSS */
1370 params
.wpa_ie
= wpa_ie
;
1371 params
.wpa_ie_len
= wpa_ie_len
;
1372 params
.pairwise_suite
= cipher_pairwise
;
1373 params
.group_suite
= cipher_group
;
1374 params
.key_mgmt_suite
= key_mgmt2driver(wpa_s
->key_mgmt
);
1375 params
.wpa_proto
= wpa_s
->wpa_proto
;
1376 params
.auth_alg
= algs
;
1377 params
.mode
= ssid
->mode
;
1378 for (i
= 0; i
< NUM_WEP_KEYS
; i
++) {
1379 if (ssid
->wep_key_len
[i
])
1380 params
.wep_key
[i
] = ssid
->wep_key
[i
];
1381 params
.wep_key_len
[i
] = ssid
->wep_key_len
[i
];
1383 params
.wep_tx_keyidx
= ssid
->wep_tx_keyidx
;
1385 if ((wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_4WAY_HANDSHAKE
) &&
1386 (params
.key_mgmt_suite
== KEY_MGMT_PSK
||
1387 params
.key_mgmt_suite
== KEY_MGMT_FT_PSK
)) {
1388 params
.passphrase
= ssid
->passphrase
;
1390 params
.psk
= ssid
->psk
;
1393 params
.drop_unencrypted
= use_crypt
;
1395 #ifdef CONFIG_IEEE80211W
1396 params
.mgmt_frame_protection
= ssid
->ieee80211w
;
1397 if (ssid
->ieee80211w
!= NO_MGMT_FRAME_PROTECTION
&& bss
) {
1398 const u8
*rsn
= wpa_bss_get_ie(bss
, WLAN_EID_RSN
);
1399 struct wpa_ie_data ie
;
1400 if (rsn
&& wpa_parse_wpa_ie(rsn
, 2 + rsn
[1], &ie
) == 0 &&
1402 (WPA_CAPABILITY_MFPC
| WPA_CAPABILITY_MFPR
)) {
1403 wpa_dbg(wpa_s
, MSG_DEBUG
, "WPA: Selected AP supports "
1404 "MFP: require MFP");
1405 params
.mgmt_frame_protection
=
1406 MGMT_FRAME_PROTECTION_REQUIRED
;
1409 #endif /* CONFIG_IEEE80211W */
1411 params
.p2p
= ssid
->p2p_group
;
1413 if (wpa_s
->parent
->set_sta_uapsd
)
1414 params
.uapsd
= wpa_s
->parent
->sta_uapsd
;
1418 #ifdef CONFIG_HT_OVERRIDES
1419 os_memset(&htcaps
, 0, sizeof(htcaps
));
1420 os_memset(&htcaps_mask
, 0, sizeof(htcaps_mask
));
1421 params
.htcaps
= (u8
*) &htcaps
;
1422 params
.htcaps_mask
= (u8
*) &htcaps_mask
;
1423 wpa_supplicant_apply_ht_overrides(wpa_s
, ssid
, ¶ms
);
1424 #endif /* CONFIG_HT_OVERRIDES */
1426 ret
= wpa_drv_associate(wpa_s
, ¶ms
);
1428 wpa_msg(wpa_s
, MSG_INFO
, "Association request to the driver "
1430 if (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_SANE_ERROR_CODES
) {
1432 * The driver is known to mean what is saying, so we
1433 * can stop right here; the association will not
1436 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
1437 os_memset(wpa_s
->pending_bssid
, 0, ETH_ALEN
);
1440 /* try to continue anyway; new association will be tried again
1445 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPA_NONE
) {
1446 /* Set the key after the association just in case association
1447 * cleared the previously configured key. */
1448 wpa_supplicant_set_wpa_none_key(wpa_s
, ssid
);
1449 /* No need to timeout authentication since there is no key
1451 wpa_supplicant_cancel_auth_timeout(wpa_s
);
1452 wpa_supplicant_set_state(wpa_s
, WPA_COMPLETED
);
1453 #ifdef CONFIG_IBSS_RSN
1454 } else if (ssid
->mode
== WPAS_MODE_IBSS
&&
1455 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_NONE
&&
1456 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_WPA_NONE
) {
1458 * RSN IBSS authentication is per-STA and we can disable the
1459 * per-BSSID authentication.
1461 wpa_supplicant_cancel_auth_timeout(wpa_s
);
1462 #endif /* CONFIG_IBSS_RSN */
1464 /* Timeout for IEEE 802.11 authentication and association */
1468 /* give IBSS a bit more time */
1469 timeout
= ssid
->mode
== WPAS_MODE_IBSS
? 10 : 5;
1470 } else if (wpa_s
->conf
->ap_scan
== 1) {
1471 /* give IBSS a bit more time */
1472 timeout
= ssid
->mode
== WPAS_MODE_IBSS
? 20 : 10;
1474 wpa_supplicant_req_auth_timeout(wpa_s
, timeout
, 0);
1477 if (wep_keys_set
&& wpa_drv_get_capa(wpa_s
, &capa
) == 0 &&
1478 capa
.flags
& WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC
) {
1479 /* Set static WEP keys again */
1480 wpa_set_wep_keys(wpa_s
, ssid
);
1483 if (wpa_s
->current_ssid
&& wpa_s
->current_ssid
!= ssid
) {
1485 * Do not allow EAP session resumption between different
1486 * network configurations.
1488 eapol_sm_invalidate_cached_session(wpa_s
->eapol
);
1490 old_ssid
= wpa_s
->current_ssid
;
1491 wpa_s
->current_ssid
= ssid
;
1492 wpa_s
->current_bss
= bss
;
1493 wpa_supplicant_rsn_supp_set_config(wpa_s
, wpa_s
->current_ssid
);
1494 wpa_supplicant_initiate_eapol(wpa_s
);
1495 if (old_ssid
!= wpa_s
->current_ssid
)
1496 wpas_notify_network_changed(wpa_s
);
1500 static void wpa_supplicant_clear_connection(struct wpa_supplicant
*wpa_s
,
1503 struct wpa_ssid
*old_ssid
;
1505 wpa_clear_keys(wpa_s
, addr
);
1506 wpa_supplicant_mark_disassoc(wpa_s
);
1507 old_ssid
= wpa_s
->current_ssid
;
1508 wpa_s
->current_ssid
= NULL
;
1509 wpa_s
->current_bss
= NULL
;
1510 wpa_sm_set_config(wpa_s
->wpa
, NULL
);
1511 eapol_sm_notify_config(wpa_s
->eapol
, NULL
, NULL
);
1512 if (old_ssid
!= wpa_s
->current_ssid
)
1513 wpas_notify_network_changed(wpa_s
);
1514 eloop_cancel_timeout(wpa_supplicant_timeout
, wpa_s
, NULL
);
1519 * wpa_supplicant_disassociate - Disassociate the current connection
1520 * @wpa_s: Pointer to wpa_supplicant data
1521 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1523 * This function is used to request %wpa_supplicant to disassociate with the
1526 void wpa_supplicant_disassociate(struct wpa_supplicant
*wpa_s
,
1531 if (!is_zero_ether_addr(wpa_s
->bssid
)) {
1532 wpa_drv_disassociate(wpa_s
, wpa_s
->bssid
, reason_code
);
1533 addr
= wpa_s
->bssid
;
1536 wpa_supplicant_clear_connection(wpa_s
, addr
);
1541 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1542 * @wpa_s: Pointer to wpa_supplicant data
1543 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1545 * This function is used to request %wpa_supplicant to deauthenticate from the
1548 void wpa_supplicant_deauthenticate(struct wpa_supplicant
*wpa_s
,
1553 if (!is_zero_ether_addr(wpa_s
->bssid
)) {
1554 wpa_drv_deauthenticate(wpa_s
, wpa_s
->bssid
, reason_code
);
1555 addr
= wpa_s
->bssid
;
1558 wpa_supplicant_clear_connection(wpa_s
, addr
);
1563 * wpa_supplicant_enable_network - Mark a configured network as enabled
1564 * @wpa_s: wpa_supplicant structure for a network interface
1565 * @ssid: wpa_ssid structure for a configured network or %NULL
1567 * Enables the specified network or all networks if no network specified.
1569 void wpa_supplicant_enable_network(struct wpa_supplicant
*wpa_s
,
1570 struct wpa_ssid
*ssid
)
1572 struct wpa_ssid
*other_ssid
;
1576 for (other_ssid
= wpa_s
->conf
->ssid
; other_ssid
;
1577 other_ssid
= other_ssid
->next
) {
1578 if (other_ssid
->disabled
== 2)
1579 continue; /* do not change persistent P2P group
1581 if (other_ssid
== wpa_s
->current_ssid
&&
1582 other_ssid
->disabled
)
1583 wpa_s
->reassociate
= 1;
1585 was_disabled
= other_ssid
->disabled
;
1587 other_ssid
->disabled
= 0;
1589 if (was_disabled
!= other_ssid
->disabled
)
1590 wpas_notify_network_enabled_changed(
1593 if (wpa_s
->reassociate
)
1594 wpa_supplicant_req_scan(wpa_s
, 0, 0);
1595 } else if (ssid
->disabled
&& ssid
->disabled
!= 2) {
1596 if (wpa_s
->current_ssid
== NULL
) {
1598 * Try to reassociate since there is no current
1599 * configuration and a new network was made available.
1601 wpa_s
->reassociate
= 1;
1602 wpa_supplicant_req_scan(wpa_s
, 0, 0);
1605 was_disabled
= ssid
->disabled
;
1609 if (was_disabled
!= ssid
->disabled
)
1610 wpas_notify_network_enabled_changed(wpa_s
, ssid
);
1616 * wpa_supplicant_disable_network - Mark a configured network as disabled
1617 * @wpa_s: wpa_supplicant structure for a network interface
1618 * @ssid: wpa_ssid structure for a configured network or %NULL
1620 * Disables the specified network or all networks if no network specified.
1622 void wpa_supplicant_disable_network(struct wpa_supplicant
*wpa_s
,
1623 struct wpa_ssid
*ssid
)
1625 struct wpa_ssid
*other_ssid
;
1629 for (other_ssid
= wpa_s
->conf
->ssid
; other_ssid
;
1630 other_ssid
= other_ssid
->next
) {
1631 was_disabled
= other_ssid
->disabled
;
1632 if (was_disabled
== 2)
1633 continue; /* do not change persistent P2P group
1636 other_ssid
->disabled
= 1;
1638 if (was_disabled
!= other_ssid
->disabled
)
1639 wpas_notify_network_enabled_changed(
1642 if (wpa_s
->current_ssid
)
1643 wpa_supplicant_disassociate(
1644 wpa_s
, WLAN_REASON_DEAUTH_LEAVING
);
1645 } else if (ssid
->disabled
!= 2) {
1646 if (ssid
== wpa_s
->current_ssid
)
1647 wpa_supplicant_disassociate(
1648 wpa_s
, WLAN_REASON_DEAUTH_LEAVING
);
1650 was_disabled
= ssid
->disabled
;
1654 if (was_disabled
!= ssid
->disabled
)
1655 wpas_notify_network_enabled_changed(wpa_s
, ssid
);
1661 * wpa_supplicant_select_network - Attempt association with a network
1662 * @wpa_s: wpa_supplicant structure for a network interface
1663 * @ssid: wpa_ssid structure for a configured network or %NULL for any network
1665 void wpa_supplicant_select_network(struct wpa_supplicant
*wpa_s
,
1666 struct wpa_ssid
*ssid
)
1669 struct wpa_ssid
*other_ssid
;
1671 if (ssid
&& ssid
!= wpa_s
->current_ssid
&& wpa_s
->current_ssid
)
1672 wpa_supplicant_disassociate(
1673 wpa_s
, WLAN_REASON_DEAUTH_LEAVING
);
1676 * Mark all other networks disabled or mark all networks enabled if no
1677 * network specified.
1679 for (other_ssid
= wpa_s
->conf
->ssid
; other_ssid
;
1680 other_ssid
= other_ssid
->next
) {
1681 int was_disabled
= other_ssid
->disabled
;
1682 if (was_disabled
== 2)
1683 continue; /* do not change persistent P2P group data */
1685 other_ssid
->disabled
= ssid
? (ssid
->id
!= other_ssid
->id
) : 0;
1687 if (was_disabled
!= other_ssid
->disabled
)
1688 wpas_notify_network_enabled_changed(wpa_s
, other_ssid
);
1691 if (ssid
&& ssid
== wpa_s
->current_ssid
&& wpa_s
->current_ssid
) {
1692 /* We are already associated with the selected network */
1693 wpa_printf(MSG_DEBUG
, "Already associated with the "
1694 "selected network - do nothing");
1698 wpa_s
->connect_without_scan
= NULL
;
1699 wpa_s
->disconnected
= 0;
1700 wpa_s
->reassociate
= 1;
1701 wpa_supplicant_req_scan(wpa_s
, 0, 0);
1704 wpas_notify_network_selected(wpa_s
, ssid
);
1709 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
1710 * @wpa_s: wpa_supplicant structure for a network interface
1711 * @ap_scan: AP scan mode
1712 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
1715 int wpa_supplicant_set_ap_scan(struct wpa_supplicant
*wpa_s
, int ap_scan
)
1720 if (ap_scan
< 0 || ap_scan
> 2)
1724 if (ap_scan
== 2 && ap_scan
!= wpa_s
->conf
->ap_scan
&&
1725 wpa_s
->wpa_state
>= WPA_ASSOCIATING
&&
1726 wpa_s
->wpa_state
< WPA_COMPLETED
) {
1727 wpa_printf(MSG_ERROR
, "ap_scan = %d (%d) rejected while "
1728 "associating", wpa_s
->conf
->ap_scan
, ap_scan
);
1731 #endif /* ANDROID */
1733 old_ap_scan
= wpa_s
->conf
->ap_scan
;
1734 wpa_s
->conf
->ap_scan
= ap_scan
;
1736 if (old_ap_scan
!= wpa_s
->conf
->ap_scan
)
1737 wpas_notify_ap_scan_changed(wpa_s
);
1744 * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age
1745 * @wpa_s: wpa_supplicant structure for a network interface
1746 * @expire_age: Expiration age in seconds
1747 * Returns: 0 if succeed or -1 if expire_age has an invalid value
1750 int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant
*wpa_s
,
1751 unsigned int bss_expire_age
)
1753 if (bss_expire_age
< 10) {
1754 wpa_msg(wpa_s
, MSG_ERROR
, "Invalid bss expiration age %u",
1758 wpa_msg(wpa_s
, MSG_DEBUG
, "Setting bss expiration age: %d sec",
1760 wpa_s
->conf
->bss_expiration_age
= bss_expire_age
;
1767 * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count
1768 * @wpa_s: wpa_supplicant structure for a network interface
1769 * @expire_count: number of scans after which an unseen BSS is reclaimed
1770 * Returns: 0 if succeed or -1 if expire_count has an invalid value
1773 int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant
*wpa_s
,
1774 unsigned int bss_expire_count
)
1776 if (bss_expire_count
< 1) {
1777 wpa_msg(wpa_s
, MSG_ERROR
, "Invalid bss expiration count %u",
1781 wpa_msg(wpa_s
, MSG_DEBUG
, "Setting bss expiration scan count: %u",
1783 wpa_s
->conf
->bss_expiration_scan_count
= bss_expire_count
;
1790 * wpa_supplicant_set_debug_params - Set global debug params
1791 * @global: wpa_global structure
1792 * @debug_level: debug level
1793 * @debug_timestamp: determines if show timestamp in debug data
1794 * @debug_show_keys: determines if show keys in debug data
1795 * Returns: 0 if succeed or -1 if debug_level has wrong value
1797 int wpa_supplicant_set_debug_params(struct wpa_global
*global
, int debug_level
,
1798 int debug_timestamp
, int debug_show_keys
)
1801 int old_level
, old_timestamp
, old_show_keys
;
1803 /* check for allowed debuglevels */
1804 if (debug_level
!= MSG_EXCESSIVE
&&
1805 debug_level
!= MSG_MSGDUMP
&&
1806 debug_level
!= MSG_DEBUG
&&
1807 debug_level
!= MSG_INFO
&&
1808 debug_level
!= MSG_WARNING
&&
1809 debug_level
!= MSG_ERROR
)
1812 old_level
= wpa_debug_level
;
1813 old_timestamp
= wpa_debug_timestamp
;
1814 old_show_keys
= wpa_debug_show_keys
;
1816 wpa_debug_level
= debug_level
;
1817 wpa_debug_timestamp
= debug_timestamp
? 1 : 0;
1818 wpa_debug_show_keys
= debug_show_keys
? 1 : 0;
1820 if (wpa_debug_level
!= old_level
)
1821 wpas_notify_debug_level_changed(global
);
1822 if (wpa_debug_timestamp
!= old_timestamp
)
1823 wpas_notify_debug_timestamp_changed(global
);
1824 if (wpa_debug_show_keys
!= old_show_keys
)
1825 wpas_notify_debug_show_keys_changed(global
);
1832 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1833 * @wpa_s: Pointer to wpa_supplicant data
1834 * Returns: A pointer to the current network structure or %NULL on failure
1836 struct wpa_ssid
* wpa_supplicant_get_ssid(struct wpa_supplicant
*wpa_s
)
1838 struct wpa_ssid
*entry
;
1839 u8 ssid
[MAX_SSID_LEN
];
1845 res
= wpa_drv_get_ssid(wpa_s
, ssid
);
1847 wpa_msg(wpa_s
, MSG_WARNING
, "Could not read SSID from "
1853 if (wpa_drv_get_bssid(wpa_s
, bssid
) < 0) {
1854 wpa_msg(wpa_s
, MSG_WARNING
, "Could not read BSSID from "
1859 wired
= wpa_s
->conf
->ap_scan
== 0 &&
1860 (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_WIRED
);
1862 entry
= wpa_s
->conf
->ssid
;
1864 if (!entry
->disabled
&&
1865 ((ssid_len
== entry
->ssid_len
&&
1866 os_memcmp(ssid
, entry
->ssid
, ssid_len
) == 0) || wired
) &&
1867 (!entry
->bssid_set
||
1868 os_memcmp(bssid
, entry
->bssid
, ETH_ALEN
) == 0))
1871 if (!entry
->disabled
&&
1872 (entry
->key_mgmt
& WPA_KEY_MGMT_WPS
) &&
1873 (entry
->ssid
== NULL
|| entry
->ssid_len
== 0) &&
1874 (!entry
->bssid_set
||
1875 os_memcmp(bssid
, entry
->bssid
, ETH_ALEN
) == 0))
1877 #endif /* CONFIG_WPS */
1879 if (!entry
->disabled
&& entry
->bssid_set
&&
1880 entry
->ssid_len
== 0 &&
1881 os_memcmp(bssid
, entry
->bssid
, ETH_ALEN
) == 0)
1884 entry
= entry
->next
;
1891 static int select_driver(struct wpa_supplicant
*wpa_s
, int i
)
1893 struct wpa_global
*global
= wpa_s
->global
;
1895 if (wpa_drivers
[i
]->global_init
&& global
->drv_priv
[i
] == NULL
) {
1896 global
->drv_priv
[i
] = wpa_drivers
[i
]->global_init();
1897 if (global
->drv_priv
[i
] == NULL
) {
1898 wpa_printf(MSG_ERROR
, "Failed to initialize driver "
1899 "'%s'", wpa_drivers
[i
]->name
);
1904 wpa_s
->driver
= wpa_drivers
[i
];
1905 wpa_s
->global_drv_priv
= global
->drv_priv
[i
];
1911 static int wpa_supplicant_set_driver(struct wpa_supplicant
*wpa_s
,
1916 const char *pos
, *driver
= name
;
1921 if (wpa_drivers
[0] == NULL
) {
1922 wpa_msg(wpa_s
, MSG_ERROR
, "No driver interfaces build into "
1928 /* default to first driver in the list */
1929 return select_driver(wpa_s
, 0);
1933 pos
= os_strchr(driver
, ',');
1937 len
= os_strlen(driver
);
1939 for (i
= 0; wpa_drivers
[i
]; i
++) {
1940 if (os_strlen(wpa_drivers
[i
]->name
) == len
&&
1941 os_strncmp(driver
, wpa_drivers
[i
]->name
, len
) ==
1943 return select_driver(wpa_s
, i
);
1949 wpa_msg(wpa_s
, MSG_ERROR
, "Unsupported driver '%s'", name
);
1955 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant
1956 * @ctx: Context pointer (wpa_s); this is the ctx variable registered
1957 * with struct wpa_driver_ops::init()
1958 * @src_addr: Source address of the EAPOL frame
1959 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header)
1960 * @len: Length of the EAPOL data
1962 * This function is called for each received EAPOL frame. Most driver
1963 * interfaces rely on more generic OS mechanism for receiving frames through
1964 * l2_packet, but if such a mechanism is not available, the driver wrapper may
1965 * take care of received EAPOL frames and deliver them to the core supplicant
1966 * code by calling this function.
1968 void wpa_supplicant_rx_eapol(void *ctx
, const u8
*src_addr
,
1969 const u8
*buf
, size_t len
)
1971 struct wpa_supplicant
*wpa_s
= ctx
;
1973 wpa_dbg(wpa_s
, MSG_DEBUG
, "RX EAPOL from " MACSTR
, MAC2STR(src_addr
));
1974 wpa_hexdump(MSG_MSGDUMP
, "RX EAPOL", buf
, len
);
1976 if (wpa_s
->wpa_state
< WPA_ASSOCIATED
) {
1978 * There is possible race condition between receiving the
1979 * association event and the EAPOL frame since they are coming
1980 * through different paths from the driver. In order to avoid
1981 * issues in trying to process the EAPOL frame before receiving
1982 * association information, lets queue it for processing until
1983 * the association event is received.
1985 wpa_dbg(wpa_s
, MSG_DEBUG
, "Not associated - Delay processing "
1986 "of received EAPOL frame");
1987 wpabuf_free(wpa_s
->pending_eapol_rx
);
1988 wpa_s
->pending_eapol_rx
= wpabuf_alloc_copy(buf
, len
);
1989 if (wpa_s
->pending_eapol_rx
) {
1990 os_get_time(&wpa_s
->pending_eapol_rx_time
);
1991 os_memcpy(wpa_s
->pending_eapol_rx_src
, src_addr
,
1998 if (wpa_s
->ap_iface
) {
1999 wpa_supplicant_ap_rx_eapol(wpa_s
, src_addr
, buf
, len
);
2002 #endif /* CONFIG_AP */
2004 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_NONE
) {
2005 wpa_dbg(wpa_s
, MSG_DEBUG
, "Ignored received EAPOL frame since "
2006 "no key management is configured");
2010 if (wpa_s
->eapol_received
== 0 &&
2011 (!(wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_4WAY_HANDSHAKE
) ||
2012 !wpa_key_mgmt_wpa_psk(wpa_s
->key_mgmt
) ||
2013 wpa_s
->wpa_state
!= WPA_COMPLETED
) &&
2014 (wpa_s
->current_ssid
== NULL
||
2015 wpa_s
->current_ssid
->mode
!= IEEE80211_MODE_IBSS
)) {
2016 /* Timeout for completing IEEE 802.1X and WPA authentication */
2017 wpa_supplicant_req_auth_timeout(
2019 (wpa_key_mgmt_wpa_ieee8021x(wpa_s
->key_mgmt
) ||
2020 wpa_s
->key_mgmt
== WPA_KEY_MGMT_IEEE8021X_NO_WPA
||
2021 wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPS
) ?
2024 wpa_s
->eapol_received
++;
2026 if (wpa_s
->countermeasures
) {
2027 wpa_msg(wpa_s
, MSG_INFO
, "WPA: Countermeasures - dropped "
2032 #ifdef CONFIG_IBSS_RSN
2033 if (wpa_s
->current_ssid
&&
2034 wpa_s
->current_ssid
->mode
== WPAS_MODE_IBSS
) {
2035 ibss_rsn_rx_eapol(wpa_s
->ibss_rsn
, src_addr
, buf
, len
);
2038 #endif /* CONFIG_IBSS_RSN */
2040 /* Source address of the incoming EAPOL frame could be compared to the
2041 * current BSSID. However, it is possible that a centralized
2042 * Authenticator could be using another MAC address than the BSSID of
2043 * an AP, so just allow any address to be used for now. The replies are
2044 * still sent to the current BSSID (if available), though. */
2046 os_memcpy(wpa_s
->last_eapol_src
, src_addr
, ETH_ALEN
);
2047 if (!wpa_key_mgmt_wpa_psk(wpa_s
->key_mgmt
) &&
2048 eapol_sm_rx_eapol(wpa_s
->eapol
, src_addr
, buf
, len
) > 0)
2050 wpa_drv_poll(wpa_s
);
2051 if (!(wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_4WAY_HANDSHAKE
))
2052 wpa_sm_rx_eapol(wpa_s
->wpa
, src_addr
, buf
, len
);
2053 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s
->key_mgmt
)) {
2055 * Set portValid = TRUE here since we are going to skip 4-way
2056 * handshake processing which would normally set portValid. We
2057 * need this to allow the EAPOL state machines to be completed
2058 * without going through EAPOL-Key handshake.
2060 eapol_sm_notify_portValid(wpa_s
->eapol
, TRUE
);
2065 int wpa_supplicant_update_mac_addr(struct wpa_supplicant
*wpa_s
)
2067 if (wpa_s
->driver
->send_eapol
) {
2068 const u8
*addr
= wpa_drv_get_mac_addr(wpa_s
);
2070 os_memcpy(wpa_s
->own_addr
, addr
, ETH_ALEN
);
2071 } else if (!(wpa_s
->drv_flags
&
2072 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE
)) {
2073 l2_packet_deinit(wpa_s
->l2
);
2074 wpa_s
->l2
= l2_packet_init(wpa_s
->ifname
,
2075 wpa_drv_get_mac_addr(wpa_s
),
2077 wpa_supplicant_rx_eapol
, wpa_s
, 0);
2078 if (wpa_s
->l2
== NULL
)
2081 const u8
*addr
= wpa_drv_get_mac_addr(wpa_s
);
2083 os_memcpy(wpa_s
->own_addr
, addr
, ETH_ALEN
);
2086 if (wpa_s
->l2
&& l2_packet_get_own_addr(wpa_s
->l2
, wpa_s
->own_addr
)) {
2087 wpa_msg(wpa_s
, MSG_ERROR
, "Failed to get own L2 address");
2091 wpa_dbg(wpa_s
, MSG_DEBUG
, "Own MAC address: " MACSTR
,
2092 MAC2STR(wpa_s
->own_addr
));
2093 wpa_sm_set_own_addr(wpa_s
->wpa
, wpa_s
->own_addr
);
2100 * wpa_supplicant_driver_init - Initialize driver interface parameters
2101 * @wpa_s: Pointer to wpa_supplicant data
2102 * Returns: 0 on success, -1 on failure
2104 * This function is called to initialize driver interface parameters.
2105 * wpa_drv_init() must have been called before this function to initialize the
2108 int wpa_supplicant_driver_init(struct wpa_supplicant
*wpa_s
)
2110 static int interface_count
= 0;
2112 if (wpa_supplicant_update_mac_addr(wpa_s
) < 0)
2115 if (wpa_s
->bridge_ifname
[0]) {
2116 wpa_dbg(wpa_s
, MSG_DEBUG
, "Receiving packets from bridge "
2117 "interface '%s'", wpa_s
->bridge_ifname
);
2118 wpa_s
->l2_br
= l2_packet_init(wpa_s
->bridge_ifname
,
2121 wpa_supplicant_rx_eapol
, wpa_s
,
2123 if (wpa_s
->l2_br
== NULL
) {
2124 wpa_msg(wpa_s
, MSG_ERROR
, "Failed to open l2_packet "
2125 "connection for the bridge interface '%s'",
2126 wpa_s
->bridge_ifname
);
2131 wpa_clear_keys(wpa_s
, NULL
);
2133 /* Make sure that TKIP countermeasures are not left enabled (could
2134 * happen if wpa_supplicant is killed during countermeasures. */
2135 wpa_drv_set_countermeasures(wpa_s
, 0);
2137 wpa_dbg(wpa_s
, MSG_DEBUG
, "RSN: flushing PMKID list in the driver");
2138 wpa_drv_flush_pmkid(wpa_s
);
2140 wpa_s
->prev_scan_ssid
= WILDCARD_SSID_SCAN
;
2141 wpa_s
->prev_scan_wildcard
= 0;
2143 if (wpa_supplicant_enabled_networks(wpa_s
->conf
)) {
2144 if (wpa_supplicant_delayed_sched_scan(wpa_s
, interface_count
,
2146 wpa_supplicant_req_scan(wpa_s
, interface_count
,
2150 wpa_supplicant_set_state(wpa_s
, WPA_INACTIVE
);
2156 static int wpa_supplicant_daemon(const char *pid_file
)
2158 wpa_printf(MSG_DEBUG
, "Daemonize..");
2159 return os_daemonize(pid_file
);
2163 static struct wpa_supplicant
* wpa_supplicant_alloc(void)
2165 struct wpa_supplicant
*wpa_s
;
2167 wpa_s
= os_zalloc(sizeof(*wpa_s
));
2170 wpa_s
->scan_req
= 1;
2171 wpa_s
->scan_interval
= 5;
2172 wpa_s
->new_connection
= 1;
2173 wpa_s
->parent
= wpa_s
;
2174 wpa_s
->sched_scanning
= 0;
2180 #ifdef CONFIG_HT_OVERRIDES
2182 static int wpa_set_htcap_mcs(struct wpa_supplicant
*wpa_s
,
2183 struct ieee80211_ht_capabilities
*htcaps
,
2184 struct ieee80211_ht_capabilities
*htcaps_mask
,
2187 /* parse ht_mcs into hex array */
2189 const char *tmp
= ht_mcs
;
2192 /* If ht_mcs is null, do not set anything */
2196 /* This is what we are setting in the kernel */
2197 os_memset(&htcaps
->supported_mcs_set
, 0, IEEE80211_HT_MCS_MASK_LEN
);
2199 wpa_msg(wpa_s
, MSG_DEBUG
, "set_htcap, ht_mcs -:%s:-", ht_mcs
);
2201 for (i
= 0; i
< IEEE80211_HT_MCS_MASK_LEN
; i
++) {
2203 long v
= strtol(tmp
, &end
, 16);
2205 wpa_msg(wpa_s
, MSG_DEBUG
,
2206 "htcap value[%i]: %ld end: %p tmp: %p",
2211 htcaps
->supported_mcs_set
[i
] = v
;
2214 wpa_msg(wpa_s
, MSG_ERROR
,
2215 "Failed to parse ht-mcs: %s, error: %s\n",
2216 ht_mcs
, strerror(errno
));
2222 * If we were able to parse any values, then set mask for the MCS set.
2225 os_memset(&htcaps_mask
->supported_mcs_set
, 0xff,
2226 IEEE80211_HT_MCS_MASK_LEN
- 1);
2227 /* skip the 3 reserved bits */
2228 htcaps_mask
->supported_mcs_set
[IEEE80211_HT_MCS_MASK_LEN
- 1] =
2236 static int wpa_disable_max_amsdu(struct wpa_supplicant
*wpa_s
,
2237 struct ieee80211_ht_capabilities
*htcaps
,
2238 struct ieee80211_ht_capabilities
*htcaps_mask
,
2243 wpa_msg(wpa_s
, MSG_DEBUG
, "set_disable_max_amsdu: %d", disabled
);
2248 msk
= host_to_le16(HT_CAP_INFO_MAX_AMSDU_SIZE
);
2249 htcaps_mask
->ht_capabilities_info
|= msk
;
2251 htcaps
->ht_capabilities_info
&= msk
;
2253 htcaps
->ht_capabilities_info
|= msk
;
2259 static int wpa_set_ampdu_factor(struct wpa_supplicant
*wpa_s
,
2260 struct ieee80211_ht_capabilities
*htcaps
,
2261 struct ieee80211_ht_capabilities
*htcaps_mask
,
2264 wpa_msg(wpa_s
, MSG_DEBUG
, "set_ampdu_factor: %d", factor
);
2269 if (factor
< 0 || factor
> 3) {
2270 wpa_msg(wpa_s
, MSG_ERROR
, "ampdu_factor: %d out of range. "
2271 "Must be 0-3 or -1", factor
);
2275 htcaps_mask
->a_mpdu_params
|= 0x3; /* 2 bits for factor */
2276 htcaps
->a_mpdu_params
&= ~0x3;
2277 htcaps
->a_mpdu_params
|= factor
& 0x3;
2283 static int wpa_set_ampdu_density(struct wpa_supplicant
*wpa_s
,
2284 struct ieee80211_ht_capabilities
*htcaps
,
2285 struct ieee80211_ht_capabilities
*htcaps_mask
,
2288 wpa_msg(wpa_s
, MSG_DEBUG
, "set_ampdu_density: %d", density
);
2293 if (density
< 0 || density
> 7) {
2294 wpa_msg(wpa_s
, MSG_ERROR
,
2295 "ampdu_density: %d out of range. Must be 0-7 or -1.",
2300 htcaps_mask
->a_mpdu_params
|= 0x1C;
2301 htcaps
->a_mpdu_params
&= ~(0x1C);
2302 htcaps
->a_mpdu_params
|= (density
<< 2) & 0x1C;
2308 static int wpa_set_disable_ht40(struct wpa_supplicant
*wpa_s
,
2309 struct ieee80211_ht_capabilities
*htcaps
,
2310 struct ieee80211_ht_capabilities
*htcaps_mask
,
2313 /* Masking these out disables HT40 */
2314 u16 msk
= host_to_le16(HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET
|
2315 HT_CAP_INFO_SHORT_GI40MHZ
);
2317 wpa_msg(wpa_s
, MSG_DEBUG
, "set_disable_ht40: %d", disabled
);
2320 htcaps
->ht_capabilities_info
&= ~msk
;
2322 htcaps
->ht_capabilities_info
|= msk
;
2324 htcaps_mask
->ht_capabilities_info
|= msk
;
2330 void wpa_supplicant_apply_ht_overrides(
2331 struct wpa_supplicant
*wpa_s
, struct wpa_ssid
*ssid
,
2332 struct wpa_driver_associate_params
*params
)
2334 struct ieee80211_ht_capabilities
*htcaps
;
2335 struct ieee80211_ht_capabilities
*htcaps_mask
;
2340 params
->disable_ht
= ssid
->disable_ht
;
2341 if (!params
->htcaps
|| !params
->htcaps_mask
)
2344 htcaps
= (struct ieee80211_ht_capabilities
*) params
->htcaps
;
2345 htcaps_mask
= (struct ieee80211_ht_capabilities
*) params
->htcaps_mask
;
2346 wpa_set_htcap_mcs(wpa_s
, htcaps
, htcaps_mask
, ssid
->ht_mcs
);
2347 wpa_disable_max_amsdu(wpa_s
, htcaps
, htcaps_mask
,
2348 ssid
->disable_max_amsdu
);
2349 wpa_set_ampdu_factor(wpa_s
, htcaps
, htcaps_mask
, ssid
->ampdu_factor
);
2350 wpa_set_ampdu_density(wpa_s
, htcaps
, htcaps_mask
, ssid
->ampdu_density
);
2351 wpa_set_disable_ht40(wpa_s
, htcaps
, htcaps_mask
, ssid
->disable_ht40
);
2354 #endif /* CONFIG_HT_OVERRIDES */
2357 static int wpa_supplicant_init_iface(struct wpa_supplicant
*wpa_s
,
2358 struct wpa_interface
*iface
)
2360 const char *ifname
, *driver
;
2361 struct wpa_driver_capa capa
;
2363 wpa_printf(MSG_DEBUG
, "Initializing interface '%s' conf '%s' driver "
2364 "'%s' ctrl_interface '%s' bridge '%s'", iface
->ifname
,
2365 iface
->confname
? iface
->confname
: "N/A",
2366 iface
->driver
? iface
->driver
: "default",
2367 iface
->ctrl_interface
? iface
->ctrl_interface
: "N/A",
2368 iface
->bridge_ifname
? iface
->bridge_ifname
: "N/A");
2370 if (iface
->confname
) {
2371 #ifdef CONFIG_BACKEND_FILE
2372 wpa_s
->confname
= os_rel2abs_path(iface
->confname
);
2373 if (wpa_s
->confname
== NULL
) {
2374 wpa_printf(MSG_ERROR
, "Failed to get absolute path "
2375 "for configuration file '%s'.",
2379 wpa_printf(MSG_DEBUG
, "Configuration file '%s' -> '%s'",
2380 iface
->confname
, wpa_s
->confname
);
2381 #else /* CONFIG_BACKEND_FILE */
2382 wpa_s
->confname
= os_strdup(iface
->confname
);
2383 #endif /* CONFIG_BACKEND_FILE */
2384 wpa_s
->conf
= wpa_config_read(wpa_s
->confname
);
2385 if (wpa_s
->conf
== NULL
) {
2386 wpa_printf(MSG_ERROR
, "Failed to read or parse "
2387 "configuration '%s'.", wpa_s
->confname
);
2392 * Override ctrl_interface and driver_param if set on command
2395 if (iface
->ctrl_interface
) {
2396 os_free(wpa_s
->conf
->ctrl_interface
);
2397 wpa_s
->conf
->ctrl_interface
=
2398 os_strdup(iface
->ctrl_interface
);
2401 if (iface
->driver_param
) {
2402 os_free(wpa_s
->conf
->driver_param
);
2403 wpa_s
->conf
->driver_param
=
2404 os_strdup(iface
->driver_param
);
2407 wpa_s
->conf
= wpa_config_alloc_empty(iface
->ctrl_interface
,
2408 iface
->driver_param
);
2410 if (wpa_s
->conf
== NULL
) {
2411 wpa_printf(MSG_ERROR
, "\nNo configuration found.");
2415 if (iface
->ifname
== NULL
) {
2416 wpa_printf(MSG_ERROR
, "\nInterface name is required.");
2419 if (os_strlen(iface
->ifname
) >= sizeof(wpa_s
->ifname
)) {
2420 wpa_printf(MSG_ERROR
, "\nToo long interface name '%s'.",
2424 os_strlcpy(wpa_s
->ifname
, iface
->ifname
, sizeof(wpa_s
->ifname
));
2426 if (iface
->bridge_ifname
) {
2427 if (os_strlen(iface
->bridge_ifname
) >=
2428 sizeof(wpa_s
->bridge_ifname
)) {
2429 wpa_printf(MSG_ERROR
, "\nToo long bridge interface "
2430 "name '%s'.", iface
->bridge_ifname
);
2433 os_strlcpy(wpa_s
->bridge_ifname
, iface
->bridge_ifname
,
2434 sizeof(wpa_s
->bridge_ifname
));
2437 /* RSNA Supplicant Key Management - INITIALIZE */
2438 eapol_sm_notify_portEnabled(wpa_s
->eapol
, FALSE
);
2439 eapol_sm_notify_portValid(wpa_s
->eapol
, FALSE
);
2441 /* Initialize driver interface and register driver event handler before
2442 * L2 receive handler so that association events are processed before
2443 * EAPOL-Key packets if both become available for the same select()
2445 driver
= iface
->driver
;
2447 if (wpa_supplicant_set_driver(wpa_s
, driver
) < 0)
2450 wpa_s
->drv_priv
= wpa_drv_init(wpa_s
, wpa_s
->ifname
);
2451 if (wpa_s
->drv_priv
== NULL
) {
2453 pos
= driver
? os_strchr(driver
, ',') : NULL
;
2455 wpa_dbg(wpa_s
, MSG_DEBUG
, "Failed to initialize "
2456 "driver interface - try next driver wrapper");
2460 wpa_msg(wpa_s
, MSG_ERROR
, "Failed to initialize driver "
2464 if (wpa_drv_set_param(wpa_s
, wpa_s
->conf
->driver_param
) < 0) {
2465 wpa_msg(wpa_s
, MSG_ERROR
, "Driver interface rejected "
2466 "driver_param '%s'", wpa_s
->conf
->driver_param
);
2470 ifname
= wpa_drv_get_ifname(wpa_s
);
2471 if (ifname
&& os_strcmp(ifname
, wpa_s
->ifname
) != 0) {
2472 wpa_dbg(wpa_s
, MSG_DEBUG
, "Driver interface replaced "
2473 "interface name with '%s'", ifname
);
2474 os_strlcpy(wpa_s
->ifname
, ifname
, sizeof(wpa_s
->ifname
));
2477 if (wpa_supplicant_init_wpa(wpa_s
) < 0)
2480 wpa_sm_set_ifname(wpa_s
->wpa
, wpa_s
->ifname
,
2481 wpa_s
->bridge_ifname
[0] ? wpa_s
->bridge_ifname
:
2483 wpa_sm_set_fast_reauth(wpa_s
->wpa
, wpa_s
->conf
->fast_reauth
);
2485 if (wpa_s
->conf
->dot11RSNAConfigPMKLifetime
&&
2486 wpa_sm_set_param(wpa_s
->wpa
, RSNA_PMK_LIFETIME
,
2487 wpa_s
->conf
->dot11RSNAConfigPMKLifetime
)) {
2488 wpa_msg(wpa_s
, MSG_ERROR
, "Invalid WPA parameter value for "
2489 "dot11RSNAConfigPMKLifetime");
2493 if (wpa_s
->conf
->dot11RSNAConfigPMKReauthThreshold
&&
2494 wpa_sm_set_param(wpa_s
->wpa
, RSNA_PMK_REAUTH_THRESHOLD
,
2495 wpa_s
->conf
->dot11RSNAConfigPMKReauthThreshold
)) {
2496 wpa_msg(wpa_s
, MSG_ERROR
, "Invalid WPA parameter value for "
2497 "dot11RSNAConfigPMKReauthThreshold");
2501 if (wpa_s
->conf
->dot11RSNAConfigSATimeout
&&
2502 wpa_sm_set_param(wpa_s
->wpa
, RSNA_SA_TIMEOUT
,
2503 wpa_s
->conf
->dot11RSNAConfigSATimeout
)) {
2504 wpa_msg(wpa_s
, MSG_ERROR
, "Invalid WPA parameter value for "
2505 "dot11RSNAConfigSATimeout");
2509 wpa_s
->hw
.modes
= wpa_drv_get_hw_feature_data(wpa_s
,
2510 &wpa_s
->hw
.num_modes
,
2513 if (wpa_drv_get_capa(wpa_s
, &capa
) == 0) {
2514 wpa_s
->drv_capa_known
= 1;
2515 wpa_s
->drv_flags
= capa
.flags
;
2516 wpa_s
->probe_resp_offloads
= capa
.probe_resp_offloads
;
2517 wpa_s
->max_scan_ssids
= capa
.max_scan_ssids
;
2518 wpa_s
->max_sched_scan_ssids
= capa
.max_sched_scan_ssids
;
2519 wpa_s
->sched_scan_supported
= capa
.sched_scan_supported
;
2520 wpa_s
->max_match_sets
= capa
.max_match_sets
;
2521 wpa_s
->max_remain_on_chan
= capa
.max_remain_on_chan
;
2522 wpa_s
->max_stations
= capa
.max_stations
;
2524 if (wpa_s
->max_remain_on_chan
== 0)
2525 wpa_s
->max_remain_on_chan
= 1000;
2527 if (wpa_supplicant_driver_init(wpa_s
) < 0)
2531 if (wpa_tdls_init(wpa_s
->wpa
))
2533 #endif /* CONFIG_TDLS */
2535 if (wpa_s
->conf
->country
[0] && wpa_s
->conf
->country
[1] &&
2536 wpa_drv_set_country(wpa_s
, wpa_s
->conf
->country
)) {
2537 wpa_dbg(wpa_s
, MSG_DEBUG
, "Failed to set country");
2541 if (wpas_wps_init(wpa_s
))
2544 if (wpa_supplicant_init_eapol(wpa_s
) < 0)
2546 wpa_sm_set_eapol(wpa_s
->wpa
, wpa_s
->eapol
);
2548 wpa_s
->ctrl_iface
= wpa_supplicant_ctrl_iface_init(wpa_s
);
2549 if (wpa_s
->ctrl_iface
== NULL
) {
2550 wpa_printf(MSG_ERROR
,
2551 "Failed to initialize control interface '%s'.\n"
2552 "You may have another wpa_supplicant process "
2553 "already running or the file was\n"
2554 "left by an unclean termination of wpa_supplicant "
2555 "in which case you will need\n"
2556 "to manually remove this file before starting "
2557 "wpa_supplicant again.\n",
2558 wpa_s
->conf
->ctrl_interface
);
2562 wpa_s
->gas
= gas_query_init(wpa_s
);
2563 if (wpa_s
->gas
== NULL
) {
2564 wpa_printf(MSG_ERROR
, "Failed to initialize GAS query");
2569 if (wpas_p2p_init(wpa_s
->global
, wpa_s
) < 0) {
2570 wpa_msg(wpa_s
, MSG_ERROR
, "Failed to init P2P");
2573 #endif /* CONFIG_P2P */
2575 if (wpa_bss_init(wpa_s
) < 0)
2582 static void wpa_supplicant_deinit_iface(struct wpa_supplicant
*wpa_s
,
2583 int notify
, int terminate
)
2585 if (wpa_s
->drv_priv
) {
2586 wpa_supplicant_deauthenticate(wpa_s
,
2587 WLAN_REASON_DEAUTH_LEAVING
);
2589 wpa_drv_set_countermeasures(wpa_s
, 0);
2590 wpa_clear_keys(wpa_s
, NULL
);
2593 wpa_supplicant_cleanup(wpa_s
);
2595 if (wpa_s
->drv_priv
)
2596 wpa_drv_deinit(wpa_s
);
2599 wpas_notify_iface_removed(wpa_s
);
2602 wpa_msg(wpa_s
, MSG_INFO
, WPA_EVENT_TERMINATING
);
2604 if (wpa_s
->ctrl_iface
) {
2605 wpa_supplicant_ctrl_iface_deinit(wpa_s
->ctrl_iface
);
2606 wpa_s
->ctrl_iface
= NULL
;
2609 if (wpa_s
->conf
!= NULL
) {
2610 wpa_config_free(wpa_s
->conf
);
2617 * wpa_supplicant_add_iface - Add a new network interface
2618 * @global: Pointer to global data from wpa_supplicant_init()
2619 * @iface: Interface configuration options
2620 * Returns: Pointer to the created interface or %NULL on failure
2622 * This function is used to add new network interfaces for %wpa_supplicant.
2623 * This can be called before wpa_supplicant_run() to add interfaces before the
2624 * main event loop has been started. In addition, new interfaces can be added
2625 * dynamically while %wpa_supplicant is already running. This could happen,
2626 * e.g., when a hotplug network adapter is inserted.
2628 struct wpa_supplicant
* wpa_supplicant_add_iface(struct wpa_global
*global
,
2629 struct wpa_interface
*iface
)
2631 struct wpa_supplicant
*wpa_s
;
2632 struct wpa_interface t_iface
;
2633 struct wpa_ssid
*ssid
;
2635 if (global
== NULL
|| iface
== NULL
)
2638 wpa_s
= wpa_supplicant_alloc();
2642 wpa_s
->global
= global
;
2645 if (global
->params
.override_driver
) {
2646 wpa_printf(MSG_DEBUG
, "Override interface parameter: driver "
2648 iface
->driver
, global
->params
.override_driver
);
2649 t_iface
.driver
= global
->params
.override_driver
;
2651 if (global
->params
.override_ctrl_interface
) {
2652 wpa_printf(MSG_DEBUG
, "Override interface parameter: "
2653 "ctrl_interface ('%s' -> '%s')",
2654 iface
->ctrl_interface
,
2655 global
->params
.override_ctrl_interface
);
2656 t_iface
.ctrl_interface
=
2657 global
->params
.override_ctrl_interface
;
2659 if (wpa_supplicant_init_iface(wpa_s
, &t_iface
)) {
2660 wpa_printf(MSG_DEBUG
, "Failed to add interface %s",
2662 wpa_supplicant_deinit_iface(wpa_s
, 0, 0);
2667 /* Notify the control interfaces about new iface */
2668 if (wpas_notify_iface_added(wpa_s
)) {
2669 wpa_supplicant_deinit_iface(wpa_s
, 1, 0);
2674 for (ssid
= wpa_s
->conf
->ssid
; ssid
; ssid
= ssid
->next
)
2675 wpas_notify_network_added(wpa_s
, ssid
);
2677 wpa_s
->next
= global
->ifaces
;
2678 global
->ifaces
= wpa_s
;
2680 wpa_dbg(wpa_s
, MSG_DEBUG
, "Added interface %s", wpa_s
->ifname
);
2687 * wpa_supplicant_remove_iface - Remove a network interface
2688 * @global: Pointer to global data from wpa_supplicant_init()
2689 * @wpa_s: Pointer to the network interface to be removed
2690 * Returns: 0 if interface was removed, -1 if interface was not found
2692 * This function can be used to dynamically remove network interfaces from
2693 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2694 * addition, this function is used to remove all remaining interfaces when
2695 * %wpa_supplicant is terminated.
2697 int wpa_supplicant_remove_iface(struct wpa_global
*global
,
2698 struct wpa_supplicant
*wpa_s
,
2701 struct wpa_supplicant
*prev
;
2703 /* Remove interface from the global list of interfaces */
2704 prev
= global
->ifaces
;
2705 if (prev
== wpa_s
) {
2706 global
->ifaces
= wpa_s
->next
;
2708 while (prev
&& prev
->next
!= wpa_s
)
2712 prev
->next
= wpa_s
->next
;
2715 wpa_dbg(wpa_s
, MSG_DEBUG
, "Removing interface %s", wpa_s
->ifname
);
2717 if (global
->p2p_group_formation
== wpa_s
)
2718 global
->p2p_group_formation
= NULL
;
2719 wpa_supplicant_deinit_iface(wpa_s
, 1, terminate
);
2727 * wpa_supplicant_get_eap_mode - Get the current EAP mode
2728 * @wpa_s: Pointer to the network interface
2729 * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found
2731 const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant
*wpa_s
)
2733 const char *eapol_method
;
2735 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s
->key_mgmt
) == 0 &&
2736 wpa_s
->key_mgmt
!= WPA_KEY_MGMT_IEEE8021X_NO_WPA
) {
2740 eapol_method
= eapol_sm_get_method_name(wpa_s
->eapol
);
2741 if (eapol_method
== NULL
)
2742 return "UNKNOWN-EAP";
2744 return eapol_method
;
2749 * wpa_supplicant_get_iface - Get a new network interface
2750 * @global: Pointer to global data from wpa_supplicant_init()
2751 * @ifname: Interface name
2752 * Returns: Pointer to the interface or %NULL if not found
2754 struct wpa_supplicant
* wpa_supplicant_get_iface(struct wpa_global
*global
,
2757 struct wpa_supplicant
*wpa_s
;
2759 for (wpa_s
= global
->ifaces
; wpa_s
; wpa_s
= wpa_s
->next
) {
2760 if (os_strcmp(wpa_s
->ifname
, ifname
) == 0)
2767 #ifndef CONFIG_NO_WPA_MSG
2768 static const char * wpa_supplicant_msg_ifname_cb(void *ctx
)
2770 struct wpa_supplicant
*wpa_s
= ctx
;
2773 return wpa_s
->ifname
;
2775 #endif /* CONFIG_NO_WPA_MSG */
2779 * wpa_supplicant_init - Initialize %wpa_supplicant
2780 * @params: Parameters for %wpa_supplicant
2781 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2783 * This function is used to initialize %wpa_supplicant. After successful
2784 * initialization, the returned data pointer can be used to add and remove
2785 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2787 struct wpa_global
* wpa_supplicant_init(struct wpa_params
*params
)
2789 struct wpa_global
*global
;
2795 #ifdef CONFIG_DRIVER_NDIS
2797 void driver_ndis_init_ops(void);
2798 driver_ndis_init_ops();
2800 #endif /* CONFIG_DRIVER_NDIS */
2802 #ifndef CONFIG_NO_WPA_MSG
2803 wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb
);
2804 #endif /* CONFIG_NO_WPA_MSG */
2806 wpa_debug_open_file(params
->wpa_debug_file_path
);
2807 if (params
->wpa_debug_syslog
)
2808 wpa_debug_open_syslog();
2810 ret
= eap_register_methods();
2812 wpa_printf(MSG_ERROR
, "Failed to register EAP methods");
2814 wpa_printf(MSG_ERROR
, "Two or more EAP methods used "
2815 "the same EAP type.");
2819 global
= os_zalloc(sizeof(*global
));
2822 dl_list_init(&global
->p2p_srv_bonjour
);
2823 dl_list_init(&global
->p2p_srv_upnp
);
2824 global
->params
.daemonize
= params
->daemonize
;
2825 global
->params
.wait_for_monitor
= params
->wait_for_monitor
;
2826 global
->params
.dbus_ctrl_interface
= params
->dbus_ctrl_interface
;
2827 if (params
->pid_file
)
2828 global
->params
.pid_file
= os_strdup(params
->pid_file
);
2829 if (params
->ctrl_interface
)
2830 global
->params
.ctrl_interface
=
2831 os_strdup(params
->ctrl_interface
);
2832 if (params
->override_driver
)
2833 global
->params
.override_driver
=
2834 os_strdup(params
->override_driver
);
2835 if (params
->override_ctrl_interface
)
2836 global
->params
.override_ctrl_interface
=
2837 os_strdup(params
->override_ctrl_interface
);
2838 wpa_debug_level
= global
->params
.wpa_debug_level
=
2839 params
->wpa_debug_level
;
2840 wpa_debug_show_keys
= global
->params
.wpa_debug_show_keys
=
2841 params
->wpa_debug_show_keys
;
2842 wpa_debug_timestamp
= global
->params
.wpa_debug_timestamp
=
2843 params
->wpa_debug_timestamp
;
2845 wpa_printf(MSG_DEBUG
, "wpa_supplicant v" VERSION_STR
);
2848 wpa_printf(MSG_ERROR
, "Failed to initialize event loop");
2849 wpa_supplicant_deinit(global
);
2853 random_init(params
->entropy_file
);
2855 global
->ctrl_iface
= wpa_supplicant_global_ctrl_iface_init(global
);
2856 if (global
->ctrl_iface
== NULL
) {
2857 wpa_supplicant_deinit(global
);
2861 if (wpas_notify_supplicant_initialized(global
)) {
2862 wpa_supplicant_deinit(global
);
2866 for (i
= 0; wpa_drivers
[i
]; i
++)
2867 global
->drv_count
++;
2868 if (global
->drv_count
== 0) {
2869 wpa_printf(MSG_ERROR
, "No drivers enabled");
2870 wpa_supplicant_deinit(global
);
2873 global
->drv_priv
= os_zalloc(global
->drv_count
* sizeof(void *));
2874 if (global
->drv_priv
== NULL
) {
2875 wpa_supplicant_deinit(global
);
2884 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2885 * @global: Pointer to global data from wpa_supplicant_init()
2886 * Returns: 0 after successful event loop run, -1 on failure
2888 * This function starts the main event loop and continues running as long as
2889 * there are any remaining events. In most cases, this function is running as
2890 * long as the %wpa_supplicant process in still in use.
2892 int wpa_supplicant_run(struct wpa_global
*global
)
2894 struct wpa_supplicant
*wpa_s
;
2896 if (global
->params
.daemonize
&&
2897 wpa_supplicant_daemon(global
->params
.pid_file
))
2900 if (global
->params
.wait_for_monitor
) {
2901 for (wpa_s
= global
->ifaces
; wpa_s
; wpa_s
= wpa_s
->next
)
2902 if (wpa_s
->ctrl_iface
)
2903 wpa_supplicant_ctrl_iface_wait(
2907 eloop_register_signal_terminate(wpa_supplicant_terminate
, global
);
2908 eloop_register_signal_reconfig(wpa_supplicant_reconfig
, global
);
2917 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2918 * @global: Pointer to global data from wpa_supplicant_init()
2920 * This function is called to deinitialize %wpa_supplicant and to free all
2921 * allocated resources. Remaining network interfaces will also be removed.
2923 void wpa_supplicant_deinit(struct wpa_global
*global
)
2931 wpas_p2p_deinit_global(global
);
2932 #endif /* CONFIG_P2P */
2934 while (global
->ifaces
)
2935 wpa_supplicant_remove_iface(global
, global
->ifaces
, 1);
2937 if (global
->ctrl_iface
)
2938 wpa_supplicant_global_ctrl_iface_deinit(global
->ctrl_iface
);
2940 wpas_notify_supplicant_deinitialized(global
);
2942 eap_peer_unregister_methods();
2944 eap_server_unregister_methods();
2945 #endif /* CONFIG_AP */
2947 for (i
= 0; wpa_drivers
[i
] && global
->drv_priv
; i
++) {
2948 if (!global
->drv_priv
[i
])
2950 wpa_drivers
[i
]->global_deinit(global
->drv_priv
[i
]);
2952 os_free(global
->drv_priv
);
2958 if (global
->params
.pid_file
) {
2959 os_daemonize_terminate(global
->params
.pid_file
);
2960 os_free(global
->params
.pid_file
);
2962 os_free(global
->params
.ctrl_interface
);
2963 os_free(global
->params
.override_driver
);
2964 os_free(global
->params
.override_ctrl_interface
);
2967 wpa_debug_close_syslog();
2968 wpa_debug_close_file();
2972 void wpa_supplicant_update_config(struct wpa_supplicant
*wpa_s
)
2974 if ((wpa_s
->conf
->changed_parameters
& CFG_CHANGED_COUNTRY
) &&
2975 wpa_s
->conf
->country
[0] && wpa_s
->conf
->country
[1]) {
2977 country
[0] = wpa_s
->conf
->country
[0];
2978 country
[1] = wpa_s
->conf
->country
[1];
2980 if (wpa_drv_set_country(wpa_s
, country
) < 0) {
2981 wpa_printf(MSG_ERROR
, "Failed to set country code "
2987 wpas_wps_update_config(wpa_s
);
2988 #endif /* CONFIG_WPS */
2991 wpas_p2p_update_config(wpa_s
);
2992 #endif /* CONFIG_P2P */
2994 wpa_s
->conf
->changed_parameters
= 0;
2998 static void add_freq(int *freqs
, int *num_freqs
, int freq
)
3002 for (i
= 0; i
< *num_freqs
; i
++) {
3003 if (freqs
[i
] == freq
)
3007 freqs
[*num_freqs
] = freq
;
3012 static int * get_bss_freqs_in_ess(struct wpa_supplicant
*wpa_s
)
3014 struct wpa_bss
*bss
, *cbss
;
3015 const int max_freqs
= 10;
3019 freqs
= os_zalloc(sizeof(int) * (max_freqs
+ 1));
3023 cbss
= wpa_s
->current_bss
;
3025 dl_list_for_each(bss
, &wpa_s
->bss
, struct wpa_bss
, list
) {
3028 if (bss
->ssid_len
== cbss
->ssid_len
&&
3029 os_memcmp(bss
->ssid
, cbss
->ssid
, bss
->ssid_len
) == 0 &&
3030 wpa_blacklist_get(wpa_s
, bss
->bssid
) == NULL
) {
3031 add_freq(freqs
, &num_freqs
, bss
->freq
);
3032 if (num_freqs
== max_freqs
)
3037 if (num_freqs
== 0) {
3046 void wpas_connection_failed(struct wpa_supplicant
*wpa_s
, const u8
*bssid
)
3053 * Remove possible authentication timeout since the connection failed.
3055 eloop_cancel_timeout(wpa_supplicant_timeout
, wpa_s
, NULL
);
3058 * Add the failed BSSID into the blacklist and speed up next scan
3059 * attempt if there could be other APs that could accept association.
3060 * The current blacklist count indicates how many times we have tried
3061 * connecting to this AP and multiple attempts mean that other APs are
3062 * either not available or has already been tried, so that we can start
3063 * increasing the delay here to avoid constant scanning.
3065 count
= wpa_blacklist_add(wpa_s
, bssid
);
3066 if (count
== 1 && wpa_s
->current_bss
) {
3068 * This BSS was not in the blacklist before. If there is
3069 * another BSS available for the same ESS, we should try that
3070 * next. Otherwise, we may as well try this one once more
3071 * before allowing other, likely worse, ESSes to be considered.
3073 freqs
= get_bss_freqs_in_ess(wpa_s
);
3075 wpa_dbg(wpa_s
, MSG_DEBUG
, "Another BSS in this ESS "
3076 "has been seen; try it next");
3077 wpa_blacklist_add(wpa_s
, bssid
);
3079 * On the next scan, go through only the known channels
3080 * used in this ESS based on previous scans to speed up
3081 * common load balancing use case.
3083 os_free(wpa_s
->next_scan_freqs
);
3084 wpa_s
->next_scan_freqs
= freqs
;
3103 * TODO: if more than one possible AP is available in scan results,
3104 * could try the other ones before requesting a new scan.
3106 wpa_supplicant_req_scan(wpa_s
, timeout
/ 1000,
3107 1000 * (timeout
% 1000));
3111 int wpas_driver_bss_selection(struct wpa_supplicant
*wpa_s
)
3113 return wpa_s
->conf
->ap_scan
== 2 ||
3114 (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_BSS_SELECTION
);