3 * Copyright (c) 2009-2010, 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.
18 #include "utils/eloop.h"
19 #include "common/ieee802_11_defs.h"
20 #include "common/ieee802_11_common.h"
21 #include "eapol_supp/eapol_supp_sm.h"
22 #include "common/wpa_common.h"
23 #include "rsn_supp/wpa.h"
24 #include "rsn_supp/pmksa_cache.h"
26 #include "wpa_supplicant_i.h"
28 #include "wpas_glue.h"
29 #include "wps_supplicant.h"
30 #include "p2p_supplicant.h"
32 #include "blacklist.h"
37 #define SME_AUTH_TIMEOUT 5
38 #define SME_ASSOC_TIMEOUT 5
40 static void sme_auth_timer(void *eloop_ctx
, void *timeout_ctx
);
41 static void sme_assoc_timer(void *eloop_ctx
, void *timeout_ctx
);
42 #ifdef CONFIG_IEEE80211W
43 static void sme_stop_sa_query(struct wpa_supplicant
*wpa_s
);
44 #endif /* CONFIG_IEEE80211W */
47 void sme_authenticate(struct wpa_supplicant
*wpa_s
,
48 struct wpa_bss
*bss
, struct wpa_ssid
*ssid
)
50 struct wpa_driver_auth_params params
;
51 struct wpa_ssid
*old_ssid
;
52 #ifdef CONFIG_IEEE80211R
54 #endif /* CONFIG_IEEE80211R */
55 #ifdef CONFIG_IEEE80211R
57 #endif /* CONFIG_IEEE80211R */
61 wpa_msg(wpa_s
, MSG_ERROR
, "SME: No scan result available for "
66 wpa_s
->current_bss
= bss
;
68 os_memset(¶ms
, 0, sizeof(params
));
69 wpa_s
->reassociate
= 0;
71 params
.freq
= bss
->freq
;
72 params
.bssid
= bss
->bssid
;
73 params
.ssid
= bss
->ssid
;
74 params
.ssid_len
= bss
->ssid_len
;
75 params
.p2p
= ssid
->p2p_group
;
77 if (wpa_s
->sme
.ssid_len
!= params
.ssid_len
||
78 os_memcmp(wpa_s
->sme
.ssid
, params
.ssid
, params
.ssid_len
) != 0)
79 wpa_s
->sme
.prev_bssid_set
= 0;
81 wpa_s
->sme
.freq
= params
.freq
;
82 os_memcpy(wpa_s
->sme
.ssid
, params
.ssid
, params
.ssid_len
);
83 wpa_s
->sme
.ssid_len
= params
.ssid_len
;
85 params
.auth_alg
= WPA_AUTH_ALG_OPEN
;
86 #ifdef IEEE8021X_EAPOL
87 if (ssid
->key_mgmt
& WPA_KEY_MGMT_IEEE8021X_NO_WPA
) {
89 if (ssid
->non_leap
== 0)
90 params
.auth_alg
= WPA_AUTH_ALG_LEAP
;
92 params
.auth_alg
|= WPA_AUTH_ALG_LEAP
;
95 #endif /* IEEE8021X_EAPOL */
96 wpa_dbg(wpa_s
, MSG_DEBUG
, "Automatic auth_alg selection: 0x%x",
99 params
.auth_alg
= ssid
->auth_alg
;
100 wpa_dbg(wpa_s
, MSG_DEBUG
, "Overriding auth_alg selection: "
101 "0x%x", params
.auth_alg
);
104 for (i
= 0; i
< NUM_WEP_KEYS
; i
++) {
105 if (ssid
->wep_key_len
[i
])
106 params
.wep_key
[i
] = ssid
->wep_key
[i
];
107 params
.wep_key_len
[i
] = ssid
->wep_key_len
[i
];
109 params
.wep_tx_keyidx
= ssid
->wep_tx_keyidx
;
111 bssid_changed
= !is_zero_ether_addr(wpa_s
->bssid
);
112 os_memset(wpa_s
->bssid
, 0, ETH_ALEN
);
113 os_memcpy(wpa_s
->pending_bssid
, bss
->bssid
, ETH_ALEN
);
115 wpas_notify_bssid_changed(wpa_s
);
117 if ((wpa_bss_get_vendor_ie(bss
, WPA_IE_VENDOR_TYPE
) ||
118 wpa_bss_get_ie(bss
, WLAN_EID_RSN
)) &&
119 (ssid
->key_mgmt
& (WPA_KEY_MGMT_IEEE8021X
| WPA_KEY_MGMT_PSK
|
120 WPA_KEY_MGMT_FT_IEEE8021X
|
121 WPA_KEY_MGMT_FT_PSK
|
122 WPA_KEY_MGMT_IEEE8021X_SHA256
|
123 WPA_KEY_MGMT_PSK_SHA256
))) {
124 int try_opportunistic
;
125 try_opportunistic
= ssid
->proactive_key_caching
&&
126 (ssid
->proto
& WPA_PROTO_RSN
);
127 if (pmksa_cache_set_current(wpa_s
->wpa
, NULL
, bss
->bssid
,
129 try_opportunistic
) == 0)
130 eapol_sm_notify_pmkid_attempt(wpa_s
->eapol
, 1);
131 wpa_s
->sme
.assoc_req_ie_len
= sizeof(wpa_s
->sme
.assoc_req_ie
);
132 if (wpa_supplicant_set_suites(wpa_s
, bss
, ssid
,
133 wpa_s
->sme
.assoc_req_ie
,
134 &wpa_s
->sme
.assoc_req_ie_len
)) {
135 wpa_msg(wpa_s
, MSG_WARNING
, "SME: Failed to set WPA "
136 "key management and encryption suites");
139 } else if (ssid
->key_mgmt
&
140 (WPA_KEY_MGMT_PSK
| WPA_KEY_MGMT_IEEE8021X
|
141 WPA_KEY_MGMT_WPA_NONE
| WPA_KEY_MGMT_FT_PSK
|
142 WPA_KEY_MGMT_FT_IEEE8021X
| WPA_KEY_MGMT_PSK_SHA256
|
143 WPA_KEY_MGMT_IEEE8021X_SHA256
)) {
144 wpa_s
->sme
.assoc_req_ie_len
= sizeof(wpa_s
->sme
.assoc_req_ie
);
145 if (wpa_supplicant_set_suites(wpa_s
, NULL
, ssid
,
146 wpa_s
->sme
.assoc_req_ie
,
147 &wpa_s
->sme
.assoc_req_ie_len
)) {
148 wpa_msg(wpa_s
, MSG_WARNING
, "SME: Failed to set WPA "
149 "key management and encryption suites (no "
154 } else if (ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
) {
155 struct wpabuf
*wps_ie
;
156 wps_ie
= wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid
));
157 if (wps_ie
&& wpabuf_len(wps_ie
) <=
158 sizeof(wpa_s
->sme
.assoc_req_ie
)) {
159 wpa_s
->sme
.assoc_req_ie_len
= wpabuf_len(wps_ie
);
160 os_memcpy(wpa_s
->sme
.assoc_req_ie
, wpabuf_head(wps_ie
),
161 wpa_s
->sme
.assoc_req_ie_len
);
163 wpa_s
->sme
.assoc_req_ie_len
= 0;
165 wpa_supplicant_set_non_wpa_policy(wpa_s
, ssid
);
166 #endif /* CONFIG_WPS */
168 wpa_supplicant_set_non_wpa_policy(wpa_s
, ssid
);
169 wpa_s
->sme
.assoc_req_ie_len
= 0;
172 #ifdef CONFIG_IEEE80211R
173 ie
= wpa_bss_get_ie(bss
, WLAN_EID_MOBILITY_DOMAIN
);
174 if (ie
&& ie
[1] >= MOBILITY_DOMAIN_ID_LEN
)
176 wpa_sm_set_ft_params(wpa_s
->wpa
, ie
, ie
? 2 + ie
[1] : 0);
178 /* Prepare for the next transition */
179 wpa_ft_prepare_auth_request(wpa_s
->wpa
, ie
);
182 if (md
&& ssid
->key_mgmt
& (WPA_KEY_MGMT_FT_PSK
|
183 WPA_KEY_MGMT_FT_IEEE8021X
)) {
184 if (wpa_s
->sme
.assoc_req_ie_len
+ 5 <
185 sizeof(wpa_s
->sme
.assoc_req_ie
)) {
186 struct rsn_mdie
*mdie
;
187 u8
*pos
= wpa_s
->sme
.assoc_req_ie
+
188 wpa_s
->sme
.assoc_req_ie_len
;
189 *pos
++ = WLAN_EID_MOBILITY_DOMAIN
;
190 *pos
++ = sizeof(*mdie
);
191 mdie
= (struct rsn_mdie
*) pos
;
192 os_memcpy(mdie
->mobility_domain
, md
,
193 MOBILITY_DOMAIN_ID_LEN
);
194 mdie
->ft_capab
= md
[MOBILITY_DOMAIN_ID_LEN
];
195 wpa_s
->sme
.assoc_req_ie_len
+= 5;
198 if (wpa_s
->sme
.ft_used
&&
199 os_memcmp(md
, wpa_s
->sme
.mobility_domain
, 2) == 0 &&
200 wpa_sm_has_ptk(wpa_s
->wpa
)) {
201 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Trying to use FT "
203 params
.auth_alg
= WPA_AUTH_ALG_FT
;
204 params
.ie
= wpa_s
->sme
.ft_ies
;
205 params
.ie_len
= wpa_s
->sme
.ft_ies_len
;
208 #endif /* CONFIG_IEEE80211R */
210 #ifdef CONFIG_IEEE80211W
211 wpa_s
->sme
.mfp
= ssid
->ieee80211w
;
212 if (ssid
->ieee80211w
!= NO_MGMT_FRAME_PROTECTION
) {
213 const u8
*rsn
= wpa_bss_get_ie(bss
, WLAN_EID_RSN
);
214 struct wpa_ie_data _ie
;
215 if (rsn
&& wpa_parse_wpa_ie(rsn
, 2 + rsn
[1], &_ie
) == 0 &&
217 (WPA_CAPABILITY_MFPC
| WPA_CAPABILITY_MFPR
)) {
218 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Selected AP supports "
220 wpa_s
->sme
.mfp
= MGMT_FRAME_PROTECTION_REQUIRED
;
223 #endif /* CONFIG_IEEE80211W */
226 if (wpa_s
->global
->p2p
) {
230 pos
= wpa_s
->sme
.assoc_req_ie
+ wpa_s
->sme
.assoc_req_ie_len
;
231 len
= sizeof(wpa_s
->sme
.assoc_req_ie
) -
232 wpa_s
->sme
.assoc_req_ie_len
;
233 res
= wpas_p2p_assoc_req_ie(wpa_s
, bss
, pos
, len
,
236 wpa_s
->sme
.assoc_req_ie_len
+= res
;
238 #endif /* CONFIG_P2P */
240 #ifdef CONFIG_INTERWORKING
241 if (wpa_s
->conf
->interworking
) {
242 u8
*pos
= wpa_s
->sme
.assoc_req_ie
;
243 if (wpa_s
->sme
.assoc_req_ie_len
> 0 && pos
[0] == WLAN_EID_RSN
)
245 os_memmove(pos
+ 6, pos
,
246 wpa_s
->sme
.assoc_req_ie_len
-
247 (pos
- wpa_s
->sme
.assoc_req_ie
));
248 wpa_s
->sme
.assoc_req_ie_len
+= 6;
249 *pos
++ = WLAN_EID_EXT_CAPAB
;
254 *pos
++ = 0x80; /* Bit 31 - Interworking */
256 #endif /* CONFIG_INTERWORKING */
258 wpa_supplicant_cancel_sched_scan(wpa_s
);
259 wpa_supplicant_cancel_scan(wpa_s
);
261 wpa_msg(wpa_s
, MSG_INFO
, "SME: Trying to authenticate with " MACSTR
262 " (SSID='%s' freq=%d MHz)", MAC2STR(params
.bssid
),
263 wpa_ssid_txt(params
.ssid
, params
.ssid_len
), params
.freq
);
265 wpa_clear_keys(wpa_s
, bss
->bssid
);
266 wpa_supplicant_set_state(wpa_s
, WPA_AUTHENTICATING
);
267 old_ssid
= wpa_s
->current_ssid
;
268 wpa_s
->current_ssid
= ssid
;
269 wpa_supplicant_rsn_supp_set_config(wpa_s
, wpa_s
->current_ssid
);
270 wpa_supplicant_initiate_eapol(wpa_s
);
271 if (old_ssid
!= wpa_s
->current_ssid
)
272 wpas_notify_network_changed(wpa_s
);
274 wpa_s
->sme
.auth_alg
= params
.auth_alg
;
275 if (wpa_drv_authenticate(wpa_s
, ¶ms
) < 0) {
276 wpa_msg(wpa_s
, MSG_INFO
, "SME: Authentication request to the "
278 wpa_supplicant_req_scan(wpa_s
, 1, 0);
282 eloop_register_timeout(SME_AUTH_TIMEOUT
, 0, sme_auth_timer
, wpa_s
,
286 * Association will be started based on the authentication event from
292 void sme_event_auth(struct wpa_supplicant
*wpa_s
, union wpa_event_data
*data
)
294 struct wpa_ssid
*ssid
= wpa_s
->current_ssid
;
297 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Ignore authentication event "
298 "when network is not selected");
302 if (wpa_s
->wpa_state
!= WPA_AUTHENTICATING
) {
303 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Ignore authentication event "
304 "when not in authenticating state");
308 if (os_memcmp(wpa_s
->pending_bssid
, data
->auth
.peer
, ETH_ALEN
) != 0) {
309 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Ignore authentication with "
310 "unexpected peer " MACSTR
,
311 MAC2STR(data
->auth
.peer
));
315 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Authentication response: peer=" MACSTR
316 " auth_type=%d status_code=%d",
317 MAC2STR(data
->auth
.peer
), data
->auth
.auth_type
,
318 data
->auth
.status_code
);
319 wpa_hexdump(MSG_MSGDUMP
, "SME: Authentication response IEs",
320 data
->auth
.ies
, data
->auth
.ies_len
);
322 eloop_cancel_timeout(sme_auth_timer
, wpa_s
, NULL
);
324 if (data
->auth
.status_code
!= WLAN_STATUS_SUCCESS
) {
325 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Authentication failed (status "
326 "code %d)", data
->auth
.status_code
);
328 if (data
->auth
.status_code
!=
329 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
||
330 wpa_s
->sme
.auth_alg
== data
->auth
.auth_type
||
331 wpa_s
->current_ssid
->auth_alg
== WPA_AUTH_ALG_LEAP
) {
332 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
336 switch (data
->auth
.auth_type
) {
338 wpa_s
->current_ssid
->auth_alg
= WPA_AUTH_ALG_SHARED
;
340 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Trying SHARED auth");
341 wpa_supplicant_associate(wpa_s
, wpa_s
->current_bss
,
342 wpa_s
->current_ssid
);
345 case WLAN_AUTH_SHARED_KEY
:
346 wpa_s
->current_ssid
->auth_alg
= WPA_AUTH_ALG_LEAP
;
348 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Trying LEAP auth");
349 wpa_supplicant_associate(wpa_s
, wpa_s
->current_bss
,
350 wpa_s
->current_ssid
);
358 #ifdef CONFIG_IEEE80211R
359 if (data
->auth
.auth_type
== WLAN_AUTH_FT
) {
360 union wpa_event_data edata
;
361 os_memset(&edata
, 0, sizeof(edata
));
362 edata
.ft_ies
.ies
= data
->auth
.ies
;
363 edata
.ft_ies
.ies_len
= data
->auth
.ies_len
;
364 os_memcpy(edata
.ft_ies
.target_ap
, data
->auth
.peer
, ETH_ALEN
);
365 wpa_supplicant_event(wpa_s
, EVENT_FT_RESPONSE
, &edata
);
367 #endif /* CONFIG_IEEE80211R */
369 sme_associate(wpa_s
, ssid
->mode
, data
->auth
.peer
,
370 data
->auth
.auth_type
);
374 void sme_associate(struct wpa_supplicant
*wpa_s
, enum wpas_mode mode
,
375 const u8
*bssid
, u16 auth_type
)
377 struct wpa_driver_associate_params params
;
378 struct ieee802_11_elems elems
;
380 os_memset(¶ms
, 0, sizeof(params
));
381 params
.bssid
= bssid
;
382 params
.ssid
= wpa_s
->sme
.ssid
;
383 params
.ssid_len
= wpa_s
->sme
.ssid_len
;
384 params
.freq
= wpa_s
->sme
.freq
;
385 params
.wpa_ie
= wpa_s
->sme
.assoc_req_ie_len
?
386 wpa_s
->sme
.assoc_req_ie
: NULL
;
387 params
.wpa_ie_len
= wpa_s
->sme
.assoc_req_ie_len
;
388 params
.pairwise_suite
= cipher_suite2driver(wpa_s
->pairwise_cipher
);
389 params
.group_suite
= cipher_suite2driver(wpa_s
->group_cipher
);
390 #ifdef CONFIG_IEEE80211R
391 if (auth_type
== WLAN_AUTH_FT
&& wpa_s
->sme
.ft_ies
) {
392 params
.wpa_ie
= wpa_s
->sme
.ft_ies
;
393 params
.wpa_ie_len
= wpa_s
->sme
.ft_ies_len
;
395 #endif /* CONFIG_IEEE80211R */
397 params
.mgmt_frame_protection
= wpa_s
->sme
.mfp
;
398 if (wpa_s
->sme
.prev_bssid_set
)
399 params
.prev_bssid
= wpa_s
->sme
.prev_bssid
;
401 wpa_msg(wpa_s
, MSG_INFO
, "Trying to associate with " MACSTR
402 " (SSID='%s' freq=%d MHz)", MAC2STR(params
.bssid
),
403 params
.ssid
? wpa_ssid_txt(params
.ssid
, params
.ssid_len
) : "",
406 wpa_supplicant_set_state(wpa_s
, WPA_ASSOCIATING
);
408 if (params
.wpa_ie
== NULL
||
409 ieee802_11_parse_elems(params
.wpa_ie
, params
.wpa_ie_len
, &elems
, 0)
411 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Could not parse own IEs?!");
412 os_memset(&elems
, 0, sizeof(elems
));
415 params
.wpa_proto
= WPA_PROTO_RSN
;
416 wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, elems
.rsn_ie
- 2,
417 elems
.rsn_ie_len
+ 2);
418 } else if (elems
.wpa_ie
) {
419 params
.wpa_proto
= WPA_PROTO_WPA
;
420 wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, elems
.wpa_ie
- 2,
421 elems
.wpa_ie_len
+ 2);
423 wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, NULL
, 0);
424 if (wpa_s
->current_ssid
&& wpa_s
->current_ssid
->p2p_group
)
427 if (wpa_s
->parent
->set_sta_uapsd
)
428 params
.uapsd
= wpa_s
->parent
->sta_uapsd
;
432 if (wpa_drv_associate(wpa_s
, ¶ms
) < 0) {
433 wpa_msg(wpa_s
, MSG_INFO
, "SME: Association request to the "
435 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
436 os_memset(wpa_s
->pending_bssid
, 0, ETH_ALEN
);
440 eloop_register_timeout(SME_ASSOC_TIMEOUT
, 0, sme_assoc_timer
, wpa_s
,
445 int sme_update_ft_ies(struct wpa_supplicant
*wpa_s
, const u8
*md
,
446 const u8
*ies
, size_t ies_len
)
448 if (md
== NULL
|| ies
== NULL
) {
449 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Remove mobility domain");
450 os_free(wpa_s
->sme
.ft_ies
);
451 wpa_s
->sme
.ft_ies
= NULL
;
452 wpa_s
->sme
.ft_ies_len
= 0;
453 wpa_s
->sme
.ft_used
= 0;
457 os_memcpy(wpa_s
->sme
.mobility_domain
, md
, MOBILITY_DOMAIN_ID_LEN
);
458 wpa_hexdump(MSG_DEBUG
, "SME: FT IEs", ies
, ies_len
);
459 os_free(wpa_s
->sme
.ft_ies
);
460 wpa_s
->sme
.ft_ies
= os_malloc(ies_len
);
461 if (wpa_s
->sme
.ft_ies
== NULL
)
463 os_memcpy(wpa_s
->sme
.ft_ies
, ies
, ies_len
);
464 wpa_s
->sme
.ft_ies_len
= ies_len
;
469 static void sme_deauth(struct wpa_supplicant
*wpa_s
)
473 bssid_changed
= !is_zero_ether_addr(wpa_s
->bssid
);
475 if (wpa_drv_deauthenticate(wpa_s
, wpa_s
->pending_bssid
,
476 WLAN_REASON_DEAUTH_LEAVING
) < 0) {
477 wpa_msg(wpa_s
, MSG_INFO
, "SME: Deauth request to the driver "
480 wpa_s
->sme
.prev_bssid_set
= 0;
482 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
483 wpa_supplicant_set_state(wpa_s
, WPA_DISCONNECTED
);
484 os_memset(wpa_s
->bssid
, 0, ETH_ALEN
);
485 os_memset(wpa_s
->pending_bssid
, 0, ETH_ALEN
);
487 wpas_notify_bssid_changed(wpa_s
);
491 void sme_event_assoc_reject(struct wpa_supplicant
*wpa_s
,
492 union wpa_event_data
*data
)
494 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Association with " MACSTR
" failed: "
495 "status code %d", MAC2STR(wpa_s
->pending_bssid
),
496 data
->assoc_reject
.status_code
);
498 eloop_cancel_timeout(sme_assoc_timer
, wpa_s
, NULL
);
501 * For now, unconditionally terminate the previous authentication. In
502 * theory, this should not be needed, but mac80211 gets quite confused
503 * if the authentication is left pending.. Some roaming cases might
504 * benefit from using the previous authentication, so this could be
505 * optimized in the future.
511 void sme_event_auth_timed_out(struct wpa_supplicant
*wpa_s
,
512 union wpa_event_data
*data
)
514 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Authentication timed out");
515 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
519 void sme_event_assoc_timed_out(struct wpa_supplicant
*wpa_s
,
520 union wpa_event_data
*data
)
522 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Association timed out");
523 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
524 wpa_supplicant_mark_disassoc(wpa_s
);
528 void sme_event_disassoc(struct wpa_supplicant
*wpa_s
,
529 union wpa_event_data
*data
)
531 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Disassociation event received");
532 if (wpa_s
->sme
.prev_bssid_set
) {
534 * cfg80211/mac80211 can get into somewhat confused state if
535 * the AP only disassociates us and leaves us in authenticated
536 * state. For now, force the state to be cleared to avoid
537 * confusing errors if we try to associate with the AP again.
539 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Deauthenticate to clear "
541 wpa_drv_deauthenticate(wpa_s
, wpa_s
->sme
.prev_bssid
,
542 WLAN_REASON_DEAUTH_LEAVING
);
547 static void sme_auth_timer(void *eloop_ctx
, void *timeout_ctx
)
549 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
550 if (wpa_s
->wpa_state
== WPA_AUTHENTICATING
) {
551 wpa_msg(wpa_s
, MSG_DEBUG
, "SME: Authentication timeout");
557 static void sme_assoc_timer(void *eloop_ctx
, void *timeout_ctx
)
559 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
560 if (wpa_s
->wpa_state
== WPA_ASSOCIATING
) {
561 wpa_msg(wpa_s
, MSG_DEBUG
, "SME: Association timeout");
567 void sme_state_changed(struct wpa_supplicant
*wpa_s
)
569 /* Make sure timers are cleaned up appropriately. */
570 if (wpa_s
->wpa_state
!= WPA_ASSOCIATING
)
571 eloop_cancel_timeout(sme_assoc_timer
, wpa_s
, NULL
);
572 if (wpa_s
->wpa_state
!= WPA_AUTHENTICATING
)
573 eloop_cancel_timeout(sme_auth_timer
, wpa_s
, NULL
);
577 void sme_disassoc_while_authenticating(struct wpa_supplicant
*wpa_s
,
578 const u8
*prev_pending_bssid
)
581 * mac80211-workaround to force deauth on failed auth cmd,
582 * requires us to remain in authenticating state to allow the
583 * second authentication attempt to be continued properly.
585 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Allow pending authentication "
586 "to proceed after disconnection event");
587 wpa_supplicant_set_state(wpa_s
, WPA_AUTHENTICATING
);
588 os_memcpy(wpa_s
->pending_bssid
, prev_pending_bssid
, ETH_ALEN
);
591 * Re-arm authentication timer in case auth fails for whatever reason.
593 eloop_cancel_timeout(sme_auth_timer
, wpa_s
, NULL
);
594 eloop_register_timeout(SME_AUTH_TIMEOUT
, 0, sme_auth_timer
, wpa_s
,
599 void sme_deinit(struct wpa_supplicant
*wpa_s
)
601 os_free(wpa_s
->sme
.ft_ies
);
602 wpa_s
->sme
.ft_ies
= NULL
;
603 wpa_s
->sme
.ft_ies_len
= 0;
604 #ifdef CONFIG_IEEE80211W
605 sme_stop_sa_query(wpa_s
);
606 #endif /* CONFIG_IEEE80211W */
608 eloop_cancel_timeout(sme_assoc_timer
, wpa_s
, NULL
);
609 eloop_cancel_timeout(sme_auth_timer
, wpa_s
, NULL
);
613 #ifdef CONFIG_IEEE80211W
615 static const unsigned int sa_query_max_timeout
= 1000;
616 static const unsigned int sa_query_retry_timeout
= 201;
618 static int sme_check_sa_query_timeout(struct wpa_supplicant
*wpa_s
)
621 struct os_time now
, passed
;
623 os_time_sub(&now
, &wpa_s
->sme
.sa_query_start
, &passed
);
624 tu
= (passed
.sec
* 1000000 + passed
.usec
) / 1024;
625 if (sa_query_max_timeout
< tu
) {
626 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: SA Query timed out");
627 sme_stop_sa_query(wpa_s
);
628 wpa_supplicant_deauthenticate(
629 wpa_s
, WLAN_REASON_PREV_AUTH_NOT_VALID
);
637 static void sme_send_sa_query_req(struct wpa_supplicant
*wpa_s
,
640 u8 req
[2 + WLAN_SA_QUERY_TR_ID_LEN
];
641 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Sending SA Query Request to "
642 MACSTR
, MAC2STR(wpa_s
->bssid
));
643 wpa_hexdump(MSG_DEBUG
, "SME: SA Query Transaction ID",
644 trans_id
, WLAN_SA_QUERY_TR_ID_LEN
);
645 req
[0] = WLAN_ACTION_SA_QUERY
;
646 req
[1] = WLAN_SA_QUERY_REQUEST
;
647 os_memcpy(req
+ 2, trans_id
, WLAN_SA_QUERY_TR_ID_LEN
);
648 if (wpa_drv_send_action(wpa_s
, wpa_s
->assoc_freq
, 0, wpa_s
->bssid
,
649 wpa_s
->own_addr
, wpa_s
->bssid
,
650 req
, sizeof(req
), 0) < 0)
651 wpa_msg(wpa_s
, MSG_INFO
, "SME: Failed to send SA Query "
656 static void sme_sa_query_timer(void *eloop_ctx
, void *timeout_ctx
)
658 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
659 unsigned int timeout
, sec
, usec
;
662 if (wpa_s
->sme
.sa_query_count
> 0 &&
663 sme_check_sa_query_timeout(wpa_s
))
666 nbuf
= os_realloc(wpa_s
->sme
.sa_query_trans_id
,
667 (wpa_s
->sme
.sa_query_count
+ 1) *
668 WLAN_SA_QUERY_TR_ID_LEN
);
671 if (wpa_s
->sme
.sa_query_count
== 0) {
672 /* Starting a new SA Query procedure */
673 os_get_time(&wpa_s
->sme
.sa_query_start
);
675 trans_id
= nbuf
+ wpa_s
->sme
.sa_query_count
* WLAN_SA_QUERY_TR_ID_LEN
;
676 wpa_s
->sme
.sa_query_trans_id
= nbuf
;
677 wpa_s
->sme
.sa_query_count
++;
679 os_get_random(trans_id
, WLAN_SA_QUERY_TR_ID_LEN
);
681 timeout
= sa_query_retry_timeout
;
682 sec
= ((timeout
/ 1000) * 1024) / 1000;
683 usec
= (timeout
% 1000) * 1024;
684 eloop_register_timeout(sec
, usec
, sme_sa_query_timer
, wpa_s
, NULL
);
686 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Association SA Query attempt %d",
687 wpa_s
->sme
.sa_query_count
);
689 sme_send_sa_query_req(wpa_s
, trans_id
);
693 static void sme_start_sa_query(struct wpa_supplicant
*wpa_s
)
695 sme_sa_query_timer(wpa_s
, NULL
);
699 void sme_stop_sa_query(struct wpa_supplicant
*wpa_s
)
701 eloop_cancel_timeout(sme_sa_query_timer
, wpa_s
, NULL
);
702 os_free(wpa_s
->sme
.sa_query_trans_id
);
703 wpa_s
->sme
.sa_query_trans_id
= NULL
;
704 wpa_s
->sme
.sa_query_count
= 0;
708 void sme_event_unprot_disconnect(struct wpa_supplicant
*wpa_s
, const u8
*sa
,
709 const u8
*da
, u16 reason_code
)
711 struct wpa_ssid
*ssid
;
713 if (!(wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_SME
))
715 if (wpa_s
->wpa_state
!= WPA_COMPLETED
)
717 ssid
= wpa_s
->current_ssid
;
718 if (ssid
== NULL
|| ssid
->ieee80211w
== 0)
720 if (os_memcmp(sa
, wpa_s
->bssid
, ETH_ALEN
) != 0)
722 if (reason_code
!= WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA
&&
723 reason_code
!= WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA
)
725 if (wpa_s
->sme
.sa_query_count
> 0)
728 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Unprotected disconnect dropped - "
729 "possible AP/STA state mismatch - trigger SA Query");
730 sme_start_sa_query(wpa_s
);
734 void sme_sa_query_rx(struct wpa_supplicant
*wpa_s
, const u8
*sa
,
735 const u8
*data
, size_t len
)
739 if (wpa_s
->sme
.sa_query_trans_id
== NULL
||
740 len
< 1 + WLAN_SA_QUERY_TR_ID_LEN
||
741 data
[0] != WLAN_SA_QUERY_RESPONSE
)
743 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Received SA Query response from "
744 MACSTR
" (trans_id %02x%02x)", MAC2STR(sa
), data
[1], data
[2]);
746 if (os_memcmp(sa
, wpa_s
->bssid
, ETH_ALEN
) != 0)
749 for (i
= 0; i
< wpa_s
->sme
.sa_query_count
; i
++) {
750 if (os_memcmp(wpa_s
->sme
.sa_query_trans_id
+
751 i
* WLAN_SA_QUERY_TR_ID_LEN
,
752 data
+ 1, WLAN_SA_QUERY_TR_ID_LEN
) == 0)
756 if (i
>= wpa_s
->sme
.sa_query_count
) {
757 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: No matching SA Query "
758 "transaction identifier found");
762 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Reply to pending SA Query received "
763 "from " MACSTR
, MAC2STR(sa
));
764 sme_stop_sa_query(wpa_s
);
767 #endif /* CONFIG_IEEE80211W */