3 * Copyright (c) 2009-2014, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
12 #include "utils/eloop.h"
13 #include "common/ieee802_11_defs.h"
14 #include "common/ieee802_11_common.h"
15 #include "eapol_supp/eapol_supp_sm.h"
16 #include "common/wpa_common.h"
17 #include "common/sae.h"
18 #include "rsn_supp/wpa.h"
19 #include "rsn_supp/pmksa_cache.h"
21 #include "wpa_supplicant_i.h"
23 #include "wpas_glue.h"
24 #include "wps_supplicant.h"
25 #include "p2p_supplicant.h"
30 #include "hs20_supplicant.h"
32 #define SME_AUTH_TIMEOUT 5
33 #define SME_ASSOC_TIMEOUT 5
35 static void sme_auth_timer(void *eloop_ctx
, void *timeout_ctx
);
36 static void sme_assoc_timer(void *eloop_ctx
, void *timeout_ctx
);
37 static void sme_obss_scan_timeout(void *eloop_ctx
, void *timeout_ctx
);
38 #ifdef CONFIG_IEEE80211W
39 static void sme_stop_sa_query(struct wpa_supplicant
*wpa_s
);
40 #endif /* CONFIG_IEEE80211W */
45 static int index_within_array(const int *array
, int idx
)
48 for (i
= 0; i
< idx
; i
++) {
56 static int sme_set_sae_group(struct wpa_supplicant
*wpa_s
)
58 int *groups
= wpa_s
->conf
->sae_groups
;
59 int default_groups
[] = { 19, 20, 21, 25, 26, 0 };
61 if (!groups
|| groups
[0] <= 0)
62 groups
= default_groups
;
64 /* Configuration may have changed, so validate current index */
65 if (!index_within_array(groups
, wpa_s
->sme
.sae_group_index
))
69 int group
= groups
[wpa_s
->sme
.sae_group_index
];
72 if (sae_set_group(&wpa_s
->sme
.sae
, group
) == 0) {
73 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Selected SAE group %d",
74 wpa_s
->sme
.sae
.group
);
77 wpa_s
->sme
.sae_group_index
++;
84 static struct wpabuf
* sme_auth_build_sae_commit(struct wpa_supplicant
*wpa_s
,
85 struct wpa_ssid
*ssid
,
91 if (ssid
->passphrase
== NULL
) {
92 wpa_printf(MSG_DEBUG
, "SAE: No password available");
96 if (sme_set_sae_group(wpa_s
) < 0) {
97 wpa_printf(MSG_DEBUG
, "SAE: Failed to select group");
101 if (sae_prepare_commit(wpa_s
->own_addr
, bssid
,
102 (u8
*) ssid
->passphrase
,
103 os_strlen(ssid
->passphrase
),
104 &wpa_s
->sme
.sae
) < 0) {
105 wpa_printf(MSG_DEBUG
, "SAE: Could not pick PWE");
109 len
= wpa_s
->sme
.sae_token
? wpabuf_len(wpa_s
->sme
.sae_token
) : 0;
110 buf
= wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN
+ len
);
114 wpabuf_put_le16(buf
, 1); /* Transaction seq# */
115 wpabuf_put_le16(buf
, WLAN_STATUS_SUCCESS
);
116 sae_write_commit(&wpa_s
->sme
.sae
, buf
, wpa_s
->sme
.sae_token
);
122 static struct wpabuf
* sme_auth_build_sae_confirm(struct wpa_supplicant
*wpa_s
)
126 buf
= wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN
);
130 wpabuf_put_le16(buf
, 2); /* Transaction seq# */
131 wpabuf_put_le16(buf
, WLAN_STATUS_SUCCESS
);
132 sae_write_confirm(&wpa_s
->sme
.sae
, buf
);
137 #endif /* CONFIG_SAE */
141 * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
142 * @wpa_s: Pointer to wpa_supplicant data
143 * @bss: Pointer to the bss which is the target of authentication attempt
145 static void sme_auth_handle_rrm(struct wpa_supplicant
*wpa_s
,
148 const u8 rrm_ie_len
= 5;
152 wpa_s
->rrm
.rrm_used
= 0;
154 wpa_printf(MSG_DEBUG
,
155 "RRM: Determining whether RRM can be used - device support: 0x%x",
156 wpa_s
->drv_rrm_flags
);
158 rrm_ie
= wpa_bss_get_ie(bss
, WLAN_EID_RRM_ENABLED_CAPABILITIES
);
159 if (!rrm_ie
|| !(bss
->caps
& IEEE80211_CAP_RRM
)) {
160 wpa_printf(MSG_DEBUG
, "RRM: No RRM in network");
164 if (!(wpa_s
->drv_rrm_flags
&
165 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES
) ||
166 !(wpa_s
->drv_rrm_flags
& WPA_DRIVER_FLAGS_QUIET
)) {
167 wpa_printf(MSG_DEBUG
,
168 "RRM: Insufficient RRM support in driver - do not use RRM");
172 if (sizeof(wpa_s
->sme
.assoc_req_ie
) <
173 wpa_s
->sme
.assoc_req_ie_len
+ rrm_ie_len
+ 2) {
175 "RRM: Unable to use RRM, no room for RRM IE");
179 wpa_printf(MSG_DEBUG
, "RRM: Adding RRM IE to Association Request");
180 pos
= wpa_s
->sme
.assoc_req_ie
+ wpa_s
->sme
.assoc_req_ie_len
;
181 os_memset(pos
, 0, 2 + rrm_ie_len
);
182 *pos
++ = WLAN_EID_RRM_ENABLED_CAPABILITIES
;
185 /* Set supported capabilites flags */
186 if (wpa_s
->drv_rrm_flags
& WPA_DRIVER_FLAGS_TX_POWER_INSERTION
)
187 *pos
|= WLAN_RRM_CAPS_LINK_MEASUREMENT
;
189 wpa_s
->sme
.assoc_req_ie_len
+= rrm_ie_len
+ 2;
190 wpa_s
->rrm
.rrm_used
= 1;
194 static void sme_send_authentication(struct wpa_supplicant
*wpa_s
,
195 struct wpa_bss
*bss
, struct wpa_ssid
*ssid
,
198 struct wpa_driver_auth_params params
;
199 struct wpa_ssid
*old_ssid
;
200 #ifdef CONFIG_IEEE80211R
202 #endif /* CONFIG_IEEE80211R */
203 #ifdef CONFIG_IEEE80211R
205 #endif /* CONFIG_IEEE80211R */
206 int i
, bssid_changed
;
207 struct wpabuf
*resp
= NULL
;
213 wpa_msg(wpa_s
, MSG_ERROR
, "SME: No scan result available for "
215 wpas_connect_work_done(wpa_s
);
219 skip_auth
= wpa_s
->conf
->reassoc_same_bss_optim
&&
220 wpa_s
->reassoc_same_bss
;
221 wpa_s
->current_bss
= bss
;
223 os_memset(¶ms
, 0, sizeof(params
));
224 wpa_s
->reassociate
= 0;
226 params
.freq
= bss
->freq
;
227 params
.bssid
= bss
->bssid
;
228 params
.ssid
= bss
->ssid
;
229 params
.ssid_len
= bss
->ssid_len
;
230 params
.p2p
= ssid
->p2p_group
;
232 if (wpa_s
->sme
.ssid_len
!= params
.ssid_len
||
233 os_memcmp(wpa_s
->sme
.ssid
, params
.ssid
, params
.ssid_len
) != 0)
234 wpa_s
->sme
.prev_bssid_set
= 0;
236 wpa_s
->sme
.freq
= params
.freq
;
237 os_memcpy(wpa_s
->sme
.ssid
, params
.ssid
, params
.ssid_len
);
238 wpa_s
->sme
.ssid_len
= params
.ssid_len
;
240 params
.auth_alg
= WPA_AUTH_ALG_OPEN
;
241 #ifdef IEEE8021X_EAPOL
242 if (ssid
->key_mgmt
& WPA_KEY_MGMT_IEEE8021X_NO_WPA
) {
244 if (ssid
->non_leap
== 0)
245 params
.auth_alg
= WPA_AUTH_ALG_LEAP
;
247 params
.auth_alg
|= WPA_AUTH_ALG_LEAP
;
250 #endif /* IEEE8021X_EAPOL */
251 wpa_dbg(wpa_s
, MSG_DEBUG
, "Automatic auth_alg selection: 0x%x",
253 if (ssid
->auth_alg
) {
254 params
.auth_alg
= ssid
->auth_alg
;
255 wpa_dbg(wpa_s
, MSG_DEBUG
, "Overriding auth_alg selection: "
256 "0x%x", params
.auth_alg
);
259 wpa_s
->sme
.sae_pmksa_caching
= 0;
260 if (wpa_key_mgmt_sae(ssid
->key_mgmt
)) {
262 struct wpa_ie_data ied
;
264 rsn
= wpa_bss_get_ie(bss
, WLAN_EID_RSN
);
266 wpa_dbg(wpa_s
, MSG_DEBUG
,
267 "SAE enabled, but target BSS does not advertise RSN");
268 } else if (wpa_parse_wpa_ie(rsn
, 2 + rsn
[1], &ied
) == 0 &&
269 wpa_key_mgmt_sae(ied
.key_mgmt
)) {
270 wpa_dbg(wpa_s
, MSG_DEBUG
, "Using SAE auth_alg");
271 params
.auth_alg
= WPA_AUTH_ALG_SAE
;
273 wpa_dbg(wpa_s
, MSG_DEBUG
,
274 "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
277 #endif /* CONFIG_SAE */
279 for (i
= 0; i
< NUM_WEP_KEYS
; i
++) {
280 if (ssid
->wep_key_len
[i
])
281 params
.wep_key
[i
] = ssid
->wep_key
[i
];
282 params
.wep_key_len
[i
] = ssid
->wep_key_len
[i
];
284 params
.wep_tx_keyidx
= ssid
->wep_tx_keyidx
;
286 bssid_changed
= !is_zero_ether_addr(wpa_s
->bssid
);
287 os_memset(wpa_s
->bssid
, 0, ETH_ALEN
);
288 os_memcpy(wpa_s
->pending_bssid
, bss
->bssid
, ETH_ALEN
);
290 wpas_notify_bssid_changed(wpa_s
);
292 if ((wpa_bss_get_vendor_ie(bss
, WPA_IE_VENDOR_TYPE
) ||
293 wpa_bss_get_ie(bss
, WLAN_EID_RSN
)) &&
294 wpa_key_mgmt_wpa(ssid
->key_mgmt
)) {
295 int try_opportunistic
;
296 try_opportunistic
= (ssid
->proactive_key_caching
< 0 ?
298 ssid
->proactive_key_caching
) &&
299 (ssid
->proto
& WPA_PROTO_RSN
);
300 if (pmksa_cache_set_current(wpa_s
->wpa
, NULL
, bss
->bssid
,
302 try_opportunistic
) == 0)
303 eapol_sm_notify_pmkid_attempt(wpa_s
->eapol
);
304 wpa_s
->sme
.assoc_req_ie_len
= sizeof(wpa_s
->sme
.assoc_req_ie
);
305 if (wpa_supplicant_set_suites(wpa_s
, bss
, ssid
,
306 wpa_s
->sme
.assoc_req_ie
,
307 &wpa_s
->sme
.assoc_req_ie_len
)) {
308 wpa_msg(wpa_s
, MSG_WARNING
, "SME: Failed to set WPA "
309 "key management and encryption suites");
310 wpas_connect_work_done(wpa_s
);
313 } else if ((ssid
->key_mgmt
& WPA_KEY_MGMT_IEEE8021X_NO_WPA
) &&
314 wpa_key_mgmt_wpa_ieee8021x(ssid
->key_mgmt
)) {
316 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
317 * use non-WPA since the scan results did not indicate that the
318 * AP is using WPA or WPA2.
320 wpa_supplicant_set_non_wpa_policy(wpa_s
, ssid
);
321 wpa_s
->sme
.assoc_req_ie_len
= 0;
322 } else if (wpa_key_mgmt_wpa_any(ssid
->key_mgmt
)) {
323 wpa_s
->sme
.assoc_req_ie_len
= sizeof(wpa_s
->sme
.assoc_req_ie
);
324 if (wpa_supplicant_set_suites(wpa_s
, NULL
, ssid
,
325 wpa_s
->sme
.assoc_req_ie
,
326 &wpa_s
->sme
.assoc_req_ie_len
)) {
327 wpa_msg(wpa_s
, MSG_WARNING
, "SME: Failed to set WPA "
328 "key management and encryption suites (no "
330 wpas_connect_work_done(wpa_s
);
334 } else if (ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
) {
335 struct wpabuf
*wps_ie
;
336 wps_ie
= wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid
));
337 if (wps_ie
&& wpabuf_len(wps_ie
) <=
338 sizeof(wpa_s
->sme
.assoc_req_ie
)) {
339 wpa_s
->sme
.assoc_req_ie_len
= wpabuf_len(wps_ie
);
340 os_memcpy(wpa_s
->sme
.assoc_req_ie
, wpabuf_head(wps_ie
),
341 wpa_s
->sme
.assoc_req_ie_len
);
343 wpa_s
->sme
.assoc_req_ie_len
= 0;
345 wpa_supplicant_set_non_wpa_policy(wpa_s
, ssid
);
346 #endif /* CONFIG_WPS */
348 wpa_supplicant_set_non_wpa_policy(wpa_s
, ssid
);
349 wpa_s
->sme
.assoc_req_ie_len
= 0;
352 #ifdef CONFIG_IEEE80211R
353 ie
= wpa_bss_get_ie(bss
, WLAN_EID_MOBILITY_DOMAIN
);
354 if (ie
&& ie
[1] >= MOBILITY_DOMAIN_ID_LEN
)
356 wpa_sm_set_ft_params(wpa_s
->wpa
, ie
, ie
? 2 + ie
[1] : 0);
358 /* Prepare for the next transition */
359 wpa_ft_prepare_auth_request(wpa_s
->wpa
, ie
);
362 if (md
&& wpa_key_mgmt_ft(ssid
->key_mgmt
)) {
363 if (wpa_s
->sme
.assoc_req_ie_len
+ 5 <
364 sizeof(wpa_s
->sme
.assoc_req_ie
)) {
365 struct rsn_mdie
*mdie
;
366 u8
*pos
= wpa_s
->sme
.assoc_req_ie
+
367 wpa_s
->sme
.assoc_req_ie_len
;
368 *pos
++ = WLAN_EID_MOBILITY_DOMAIN
;
369 *pos
++ = sizeof(*mdie
);
370 mdie
= (struct rsn_mdie
*) pos
;
371 os_memcpy(mdie
->mobility_domain
, md
,
372 MOBILITY_DOMAIN_ID_LEN
);
373 mdie
->ft_capab
= md
[MOBILITY_DOMAIN_ID_LEN
];
374 wpa_s
->sme
.assoc_req_ie_len
+= 5;
377 if (wpa_s
->sme
.ft_used
&&
378 os_memcmp(md
, wpa_s
->sme
.mobility_domain
, 2) == 0 &&
379 wpa_sm_has_ptk(wpa_s
->wpa
)) {
380 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Trying to use FT "
382 params
.auth_alg
= WPA_AUTH_ALG_FT
;
383 params
.ie
= wpa_s
->sme
.ft_ies
;
384 params
.ie_len
= wpa_s
->sme
.ft_ies_len
;
387 #endif /* CONFIG_IEEE80211R */
389 #ifdef CONFIG_IEEE80211W
390 wpa_s
->sme
.mfp
= wpas_get_ssid_pmf(wpa_s
, ssid
);
391 if (wpa_s
->sme
.mfp
!= NO_MGMT_FRAME_PROTECTION
) {
392 const u8
*rsn
= wpa_bss_get_ie(bss
, WLAN_EID_RSN
);
393 struct wpa_ie_data _ie
;
394 if (rsn
&& wpa_parse_wpa_ie(rsn
, 2 + rsn
[1], &_ie
) == 0 &&
396 (WPA_CAPABILITY_MFPC
| WPA_CAPABILITY_MFPR
)) {
397 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Selected AP supports "
399 wpa_s
->sme
.mfp
= MGMT_FRAME_PROTECTION_REQUIRED
;
402 #endif /* CONFIG_IEEE80211W */
405 if (wpa_s
->global
->p2p
) {
409 pos
= wpa_s
->sme
.assoc_req_ie
+ wpa_s
->sme
.assoc_req_ie_len
;
410 len
= sizeof(wpa_s
->sme
.assoc_req_ie
) -
411 wpa_s
->sme
.assoc_req_ie_len
;
412 res
= wpas_p2p_assoc_req_ie(wpa_s
, bss
, pos
, len
,
415 wpa_s
->sme
.assoc_req_ie_len
+= res
;
417 #endif /* CONFIG_P2P */
420 if (is_hs20_network(wpa_s
, ssid
, bss
)) {
422 hs20
= wpabuf_alloc(20);
424 int pps_mo_id
= hs20_get_pps_mo_id(wpa_s
, ssid
);
427 wpas_hs20_add_indication(hs20
, pps_mo_id
);
428 len
= sizeof(wpa_s
->sme
.assoc_req_ie
) -
429 wpa_s
->sme
.assoc_req_ie_len
;
430 if (wpabuf_len(hs20
) <= len
) {
431 os_memcpy(wpa_s
->sme
.assoc_req_ie
+
432 wpa_s
->sme
.assoc_req_ie_len
,
433 wpabuf_head(hs20
), wpabuf_len(hs20
));
434 wpa_s
->sme
.assoc_req_ie_len
+= wpabuf_len(hs20
);
439 #endif /* CONFIG_HS20 */
442 if (wpa_s
->fst_ies
) {
443 int fst_ies_len
= wpabuf_len(wpa_s
->fst_ies
);
445 if (wpa_s
->sme
.assoc_req_ie_len
+ fst_ies_len
<=
446 sizeof(wpa_s
->sme
.assoc_req_ie
)) {
447 os_memcpy(wpa_s
->sme
.assoc_req_ie
+
448 wpa_s
->sme
.assoc_req_ie_len
,
449 wpabuf_head(wpa_s
->fst_ies
),
451 wpa_s
->sme
.assoc_req_ie_len
+= fst_ies_len
;
454 #endif /* CONFIG_FST */
456 ext_capab_len
= wpas_build_ext_capab(wpa_s
, ext_capab
,
458 if (ext_capab_len
> 0) {
459 u8
*pos
= wpa_s
->sme
.assoc_req_ie
;
460 if (wpa_s
->sme
.assoc_req_ie_len
> 0 && pos
[0] == WLAN_EID_RSN
)
462 os_memmove(pos
+ ext_capab_len
, pos
,
463 wpa_s
->sme
.assoc_req_ie_len
-
464 (pos
- wpa_s
->sme
.assoc_req_ie
));
465 wpa_s
->sme
.assoc_req_ie_len
+= ext_capab_len
;
466 os_memcpy(pos
, ext_capab
, ext_capab_len
);
469 if (wpa_s
->vendor_elem
[VENDOR_ELEM_ASSOC_REQ
]) {
470 struct wpabuf
*buf
= wpa_s
->vendor_elem
[VENDOR_ELEM_ASSOC_REQ
];
473 len
= sizeof(wpa_s
->sme
.assoc_req_ie
) -
474 wpa_s
->sme
.assoc_req_ie_len
;
475 if (wpabuf_len(buf
) <= len
) {
476 os_memcpy(wpa_s
->sme
.assoc_req_ie
+
477 wpa_s
->sme
.assoc_req_ie_len
,
478 wpabuf_head(buf
), wpabuf_len(buf
));
479 wpa_s
->sme
.assoc_req_ie_len
+= wpabuf_len(buf
);
483 sme_auth_handle_rrm(wpa_s
, bss
);
486 if (!skip_auth
&& params
.auth_alg
== WPA_AUTH_ALG_SAE
&&
487 pmksa_cache_set_current(wpa_s
->wpa
, NULL
, bss
->bssid
, ssid
, 0) == 0)
489 wpa_dbg(wpa_s
, MSG_DEBUG
,
490 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
491 params
.auth_alg
= WPA_AUTH_ALG_OPEN
;
492 wpa_s
->sme
.sae_pmksa_caching
= 1;
495 if (!skip_auth
&& params
.auth_alg
== WPA_AUTH_ALG_SAE
) {
497 resp
= sme_auth_build_sae_commit(wpa_s
, ssid
,
500 resp
= sme_auth_build_sae_confirm(wpa_s
);
502 wpas_connection_failed(wpa_s
, bss
->bssid
);
505 params
.sae_data
= wpabuf_head(resp
);
506 params
.sae_data_len
= wpabuf_len(resp
);
507 wpa_s
->sme
.sae
.state
= start
? SAE_COMMITTED
: SAE_CONFIRMED
;
509 #endif /* CONFIG_SAE */
511 wpa_supplicant_cancel_sched_scan(wpa_s
);
512 wpa_supplicant_cancel_scan(wpa_s
);
514 wpa_msg(wpa_s
, MSG_INFO
, "SME: Trying to authenticate with " MACSTR
515 " (SSID='%s' freq=%d MHz)", MAC2STR(params
.bssid
),
516 wpa_ssid_txt(params
.ssid
, params
.ssid_len
), params
.freq
);
518 wpa_clear_keys(wpa_s
, bss
->bssid
);
519 wpa_supplicant_set_state(wpa_s
, WPA_AUTHENTICATING
);
520 old_ssid
= wpa_s
->current_ssid
;
521 wpa_s
->current_ssid
= ssid
;
522 wpa_supplicant_rsn_supp_set_config(wpa_s
, wpa_s
->current_ssid
);
523 wpa_supplicant_initiate_eapol(wpa_s
);
524 if (old_ssid
!= wpa_s
->current_ssid
)
525 wpas_notify_network_changed(wpa_s
);
529 * If multi-channel concurrency is not supported, check for any
530 * frequency conflict. In case of any frequency conflict, remove the
531 * least prioritized connection.
533 if (wpa_s
->num_multichan_concurrent
< 2) {
535 num
= get_shared_radio_freqs(wpa_s
, &freq
, 1);
536 if (num
> 0 && freq
> 0 && freq
!= params
.freq
) {
537 wpa_printf(MSG_DEBUG
,
538 "Conflicting frequency found (%d != %d)",
540 if (wpas_p2p_handle_frequency_conflicts(wpa_s
,
543 wpas_connection_failed(wpa_s
, bss
->bssid
);
544 wpa_supplicant_mark_disassoc(wpa_s
);
546 wpas_connect_work_done(wpa_s
);
551 #endif /* CONFIG_P2P */
554 wpa_msg(wpa_s
, MSG_DEBUG
,
555 "SME: Skip authentication step on reassoc-to-same-BSS");
557 sme_associate(wpa_s
, ssid
->mode
, bss
->bssid
, WLAN_AUTH_OPEN
);
562 wpa_s
->sme
.auth_alg
= params
.auth_alg
;
563 if (wpa_drv_authenticate(wpa_s
, ¶ms
) < 0) {
564 wpa_msg(wpa_s
, MSG_INFO
, "SME: Authentication request to the "
566 wpas_connection_failed(wpa_s
, bss
->bssid
);
567 wpa_supplicant_mark_disassoc(wpa_s
);
569 wpas_connect_work_done(wpa_s
);
573 eloop_register_timeout(SME_AUTH_TIMEOUT
, 0, sme_auth_timer
, wpa_s
,
577 * Association will be started based on the authentication event from
585 static void sme_auth_start_cb(struct wpa_radio_work
*work
, int deinit
)
587 struct wpa_connect_work
*cwork
= work
->ctx
;
588 struct wpa_supplicant
*wpa_s
= work
->wpa_s
;
592 wpa_s
->connect_work
= NULL
;
594 wpas_connect_work_free(cwork
);
598 wpa_s
->connect_work
= work
;
600 if (cwork
->bss_removed
||
601 !wpas_valid_bss_ssid(wpa_s
, cwork
->bss
, cwork
->ssid
) ||
602 wpas_network_disabled(wpa_s
, cwork
->ssid
)) {
603 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
604 wpas_connect_work_done(wpa_s
);
608 sme_send_authentication(wpa_s
, cwork
->bss
, cwork
->ssid
, 1);
612 void sme_authenticate(struct wpa_supplicant
*wpa_s
,
613 struct wpa_bss
*bss
, struct wpa_ssid
*ssid
)
615 struct wpa_connect_work
*cwork
;
617 if (bss
== NULL
|| ssid
== NULL
)
619 if (wpa_s
->connect_work
) {
620 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Reject sme_authenticate() call since connect_work exist");
624 if (radio_work_pending(wpa_s
, "sme-connect")) {
626 * The previous sme-connect work might no longer be valid due to
627 * the fact that the BSS list was updated. In addition, it makes
628 * sense to adhere to the 'newer' decision.
630 wpa_dbg(wpa_s
, MSG_DEBUG
,
631 "SME: Remove previous pending sme-connect");
632 radio_remove_works(wpa_s
, "sme-connect", 0);
635 cwork
= os_zalloc(sizeof(*cwork
));
643 wpa_s
->sme
.sae
.state
= SAE_NOTHING
;
644 wpa_s
->sme
.sae
.send_confirm
= 0;
645 wpa_s
->sme
.sae_group_index
= 0;
646 #endif /* CONFIG_SAE */
648 if (radio_add_work(wpa_s
, bss
->freq
, "sme-connect", 1,
649 sme_auth_start_cb
, cwork
) < 0)
650 wpas_connect_work_free(cwork
);
656 static int sme_sae_auth(struct wpa_supplicant
*wpa_s
, u16 auth_transaction
,
657 u16 status_code
, const u8
*data
, size_t len
)
661 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: SAE authentication transaction %u "
662 "status code %u", auth_transaction
, status_code
);
664 if (auth_transaction
== 1 &&
665 status_code
== WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ
&&
666 wpa_s
->sme
.sae
.state
== SAE_COMMITTED
&&
667 wpa_s
->current_bss
&& wpa_s
->current_ssid
) {
668 int default_groups
[] = { 19, 20, 21, 25, 26, 0 };
671 groups
= wpa_s
->conf
->sae_groups
;
672 if (!groups
|| groups
[0] <= 0)
673 groups
= default_groups
;
675 if (len
< sizeof(le16
)) {
676 wpa_dbg(wpa_s
, MSG_DEBUG
,
677 "SME: Too short SAE anti-clogging token request");
680 group
= WPA_GET_LE16(data
);
681 wpa_dbg(wpa_s
, MSG_DEBUG
,
682 "SME: SAE anti-clogging token requested (group %u)",
684 if (sae_group_allowed(&wpa_s
->sme
.sae
, groups
, group
) !=
685 WLAN_STATUS_SUCCESS
) {
686 wpa_dbg(wpa_s
, MSG_ERROR
,
687 "SME: SAE group %u of anti-clogging request is invalid",
691 wpabuf_free(wpa_s
->sme
.sae_token
);
692 wpa_s
->sme
.sae_token
= wpabuf_alloc_copy(data
+ sizeof(le16
),
694 sme_send_authentication(wpa_s
, wpa_s
->current_bss
,
695 wpa_s
->current_ssid
, 1);
699 if (auth_transaction
== 1 &&
700 status_code
== WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED
&&
701 wpa_s
->sme
.sae
.state
== SAE_COMMITTED
&&
702 wpa_s
->current_bss
&& wpa_s
->current_ssid
) {
703 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: SAE group not supported");
704 wpa_s
->sme
.sae_group_index
++;
705 if (sme_set_sae_group(wpa_s
) < 0)
706 return -1; /* no other groups enabled */
707 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Try next enabled SAE group");
708 sme_send_authentication(wpa_s
, wpa_s
->current_bss
,
709 wpa_s
->current_ssid
, 1);
713 if (status_code
!= WLAN_STATUS_SUCCESS
)
716 if (auth_transaction
== 1) {
719 groups
= wpa_s
->conf
->sae_groups
;
721 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME SAE commit");
722 if (wpa_s
->current_bss
== NULL
||
723 wpa_s
->current_ssid
== NULL
)
725 if (wpa_s
->sme
.sae
.state
!= SAE_COMMITTED
)
727 if (groups
&& groups
[0] <= 0)
729 res
= sae_parse_commit(&wpa_s
->sme
.sae
, data
, len
, NULL
, NULL
,
731 if (res
== SAE_SILENTLY_DISCARD
) {
732 wpa_printf(MSG_DEBUG
,
733 "SAE: Drop commit message due to reflection attack");
736 if (res
!= WLAN_STATUS_SUCCESS
)
739 if (sae_process_commit(&wpa_s
->sme
.sae
) < 0) {
740 wpa_printf(MSG_DEBUG
, "SAE: Failed to process peer "
745 wpabuf_free(wpa_s
->sme
.sae_token
);
746 wpa_s
->sme
.sae_token
= NULL
;
747 sme_send_authentication(wpa_s
, wpa_s
->current_bss
,
748 wpa_s
->current_ssid
, 0);
750 } else if (auth_transaction
== 2) {
751 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME SAE confirm");
752 if (wpa_s
->sme
.sae
.state
!= SAE_CONFIRMED
)
754 if (sae_check_confirm(&wpa_s
->sme
.sae
, data
, len
) < 0)
756 wpa_s
->sme
.sae
.state
= SAE_ACCEPTED
;
757 sae_clear_temp_data(&wpa_s
->sme
.sae
);
763 #endif /* CONFIG_SAE */
766 void sme_event_auth(struct wpa_supplicant
*wpa_s
, union wpa_event_data
*data
)
768 struct wpa_ssid
*ssid
= wpa_s
->current_ssid
;
771 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Ignore authentication event "
772 "when network is not selected");
776 if (wpa_s
->wpa_state
!= WPA_AUTHENTICATING
) {
777 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Ignore authentication event "
778 "when not in authenticating state");
782 if (os_memcmp(wpa_s
->pending_bssid
, data
->auth
.peer
, ETH_ALEN
) != 0) {
783 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Ignore authentication with "
784 "unexpected peer " MACSTR
,
785 MAC2STR(data
->auth
.peer
));
789 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Authentication response: peer=" MACSTR
790 " auth_type=%d auth_transaction=%d status_code=%d",
791 MAC2STR(data
->auth
.peer
), data
->auth
.auth_type
,
792 data
->auth
.auth_transaction
, data
->auth
.status_code
);
793 wpa_hexdump(MSG_MSGDUMP
, "SME: Authentication response IEs",
794 data
->auth
.ies
, data
->auth
.ies_len
);
796 eloop_cancel_timeout(sme_auth_timer
, wpa_s
, NULL
);
799 if (data
->auth
.auth_type
== WLAN_AUTH_SAE
) {
801 res
= sme_sae_auth(wpa_s
, data
->auth
.auth_transaction
,
802 data
->auth
.status_code
, data
->auth
.ies
,
805 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
806 wpa_supplicant_set_state(wpa_s
, WPA_DISCONNECTED
);
812 wpa_printf(MSG_DEBUG
, "SME: SAE completed - setting PMK for "
814 wpa_sm_set_pmk(wpa_s
->wpa
, wpa_s
->sme
.sae
.pmk
, PMK_LEN
,
815 wpa_s
->pending_bssid
);
817 #endif /* CONFIG_SAE */
819 if (data
->auth
.status_code
!= WLAN_STATUS_SUCCESS
) {
822 if (data
->auth
.ies
&& data
->auth
.ies_len
) {
823 size_t buflen
= 2 * data
->auth
.ies_len
+ 1;
824 ie_txt
= os_malloc(buflen
);
826 wpa_snprintf_hex(ie_txt
, buflen
, data
->auth
.ies
,
830 wpa_msg(wpa_s
, MSG_INFO
, WPA_EVENT_AUTH_REJECT MACSTR
831 " auth_type=%u auth_transaction=%u status_code=%u ie=%s",
832 MAC2STR(data
->auth
.peer
), data
->auth
.auth_type
,
833 data
->auth
.auth_transaction
, data
->auth
.status_code
,
837 if (data
->auth
.status_code
!=
838 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG
||
839 wpa_s
->sme
.auth_alg
== data
->auth
.auth_type
||
840 wpa_s
->current_ssid
->auth_alg
== WPA_AUTH_ALG_LEAP
) {
841 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
842 wpa_supplicant_set_state(wpa_s
, WPA_DISCONNECTED
);
846 wpas_connect_work_done(wpa_s
);
848 switch (data
->auth
.auth_type
) {
850 wpa_s
->current_ssid
->auth_alg
= WPA_AUTH_ALG_SHARED
;
852 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Trying SHARED auth");
853 wpa_supplicant_associate(wpa_s
, wpa_s
->current_bss
,
854 wpa_s
->current_ssid
);
857 case WLAN_AUTH_SHARED_KEY
:
858 wpa_s
->current_ssid
->auth_alg
= WPA_AUTH_ALG_LEAP
;
860 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Trying LEAP auth");
861 wpa_supplicant_associate(wpa_s
, wpa_s
->current_bss
,
862 wpa_s
->current_ssid
);
870 #ifdef CONFIG_IEEE80211R
871 if (data
->auth
.auth_type
== WLAN_AUTH_FT
) {
872 if (wpa_ft_process_response(wpa_s
->wpa
, data
->auth
.ies
,
873 data
->auth
.ies_len
, 0,
874 data
->auth
.peer
, NULL
, 0) < 0) {
875 wpa_dbg(wpa_s
, MSG_DEBUG
,
876 "SME: FT Authentication response processing failed");
877 wpa_msg(wpa_s
, MSG_INFO
, WPA_EVENT_DISCONNECTED
"bssid="
879 " reason=%d locally_generated=1",
880 MAC2STR(wpa_s
->pending_bssid
),
881 WLAN_REASON_DEAUTH_LEAVING
);
882 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
883 wpa_supplicant_mark_disassoc(wpa_s
);
887 #endif /* CONFIG_IEEE80211R */
889 sme_associate(wpa_s
, ssid
->mode
, data
->auth
.peer
,
890 data
->auth
.auth_type
);
894 void sme_associate(struct wpa_supplicant
*wpa_s
, enum wpas_mode mode
,
895 const u8
*bssid
, u16 auth_type
)
897 struct wpa_driver_associate_params params
;
898 struct ieee802_11_elems elems
;
899 #ifdef CONFIG_HT_OVERRIDES
900 struct ieee80211_ht_capabilities htcaps
;
901 struct ieee80211_ht_capabilities htcaps_mask
;
902 #endif /* CONFIG_HT_OVERRIDES */
903 #ifdef CONFIG_VHT_OVERRIDES
904 struct ieee80211_vht_capabilities vhtcaps
;
905 struct ieee80211_vht_capabilities vhtcaps_mask
;
906 #endif /* CONFIG_VHT_OVERRIDES */
908 os_memset(¶ms
, 0, sizeof(params
));
909 params
.bssid
= bssid
;
910 params
.ssid
= wpa_s
->sme
.ssid
;
911 params
.ssid_len
= wpa_s
->sme
.ssid_len
;
912 params
.freq
.freq
= wpa_s
->sme
.freq
;
913 params
.bg_scan_period
= wpa_s
->current_ssid
?
914 wpa_s
->current_ssid
->bg_scan_period
: -1;
915 params
.wpa_ie
= wpa_s
->sme
.assoc_req_ie_len
?
916 wpa_s
->sme
.assoc_req_ie
: NULL
;
917 params
.wpa_ie_len
= wpa_s
->sme
.assoc_req_ie_len
;
918 params
.pairwise_suite
= wpa_s
->pairwise_cipher
;
919 params
.group_suite
= wpa_s
->group_cipher
;
920 params
.key_mgmt_suite
= wpa_s
->key_mgmt
;
921 params
.wpa_proto
= wpa_s
->wpa_proto
;
922 #ifdef CONFIG_HT_OVERRIDES
923 os_memset(&htcaps
, 0, sizeof(htcaps
));
924 os_memset(&htcaps_mask
, 0, sizeof(htcaps_mask
));
925 params
.htcaps
= (u8
*) &htcaps
;
926 params
.htcaps_mask
= (u8
*) &htcaps_mask
;
927 wpa_supplicant_apply_ht_overrides(wpa_s
, wpa_s
->current_ssid
, ¶ms
);
928 #endif /* CONFIG_HT_OVERRIDES */
929 #ifdef CONFIG_VHT_OVERRIDES
930 os_memset(&vhtcaps
, 0, sizeof(vhtcaps
));
931 os_memset(&vhtcaps_mask
, 0, sizeof(vhtcaps_mask
));
932 params
.vhtcaps
= &vhtcaps
;
933 params
.vhtcaps_mask
= &vhtcaps_mask
;
934 wpa_supplicant_apply_vht_overrides(wpa_s
, wpa_s
->current_ssid
, ¶ms
);
935 #endif /* CONFIG_VHT_OVERRIDES */
936 #ifdef CONFIG_IEEE80211R
937 if (auth_type
== WLAN_AUTH_FT
&& wpa_s
->sme
.ft_ies
) {
938 params
.wpa_ie
= wpa_s
->sme
.ft_ies
;
939 params
.wpa_ie_len
= wpa_s
->sme
.ft_ies_len
;
941 #endif /* CONFIG_IEEE80211R */
943 params
.mgmt_frame_protection
= wpa_s
->sme
.mfp
;
944 params
.rrm_used
= wpa_s
->rrm
.rrm_used
;
945 if (wpa_s
->sme
.prev_bssid_set
)
946 params
.prev_bssid
= wpa_s
->sme
.prev_bssid
;
948 wpa_msg(wpa_s
, MSG_INFO
, "Trying to associate with " MACSTR
949 " (SSID='%s' freq=%d MHz)", MAC2STR(params
.bssid
),
950 params
.ssid
? wpa_ssid_txt(params
.ssid
, params
.ssid_len
) : "",
953 wpa_supplicant_set_state(wpa_s
, WPA_ASSOCIATING
);
955 if (params
.wpa_ie
== NULL
||
956 ieee802_11_parse_elems(params
.wpa_ie
, params
.wpa_ie_len
, &elems
, 0)
958 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Could not parse own IEs?!");
959 os_memset(&elems
, 0, sizeof(elems
));
962 params
.wpa_proto
= WPA_PROTO_RSN
;
963 wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, elems
.rsn_ie
- 2,
964 elems
.rsn_ie_len
+ 2);
965 } else if (elems
.wpa_ie
) {
966 params
.wpa_proto
= WPA_PROTO_WPA
;
967 wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, elems
.wpa_ie
- 2,
968 elems
.wpa_ie_len
+ 2);
969 } else if (elems
.osen
) {
970 params
.wpa_proto
= WPA_PROTO_OSEN
;
971 wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, elems
.osen
- 2,
974 wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, NULL
, 0);
975 if (wpa_s
->current_ssid
&& wpa_s
->current_ssid
->p2p_group
)
978 if (wpa_s
->parent
->set_sta_uapsd
)
979 params
.uapsd
= wpa_s
->parent
->sta_uapsd
;
983 if (wpa_drv_associate(wpa_s
, ¶ms
) < 0) {
984 wpa_msg(wpa_s
, MSG_INFO
, "SME: Association request to the "
986 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
987 wpa_supplicant_set_state(wpa_s
, WPA_DISCONNECTED
);
988 os_memset(wpa_s
->pending_bssid
, 0, ETH_ALEN
);
992 eloop_register_timeout(SME_ASSOC_TIMEOUT
, 0, sme_assoc_timer
, wpa_s
,
997 int sme_update_ft_ies(struct wpa_supplicant
*wpa_s
, const u8
*md
,
998 const u8
*ies
, size_t ies_len
)
1000 if (md
== NULL
|| ies
== NULL
) {
1001 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Remove mobility domain");
1002 os_free(wpa_s
->sme
.ft_ies
);
1003 wpa_s
->sme
.ft_ies
= NULL
;
1004 wpa_s
->sme
.ft_ies_len
= 0;
1005 wpa_s
->sme
.ft_used
= 0;
1009 os_memcpy(wpa_s
->sme
.mobility_domain
, md
, MOBILITY_DOMAIN_ID_LEN
);
1010 wpa_hexdump(MSG_DEBUG
, "SME: FT IEs", ies
, ies_len
);
1011 os_free(wpa_s
->sme
.ft_ies
);
1012 wpa_s
->sme
.ft_ies
= os_malloc(ies_len
);
1013 if (wpa_s
->sme
.ft_ies
== NULL
)
1015 os_memcpy(wpa_s
->sme
.ft_ies
, ies
, ies_len
);
1016 wpa_s
->sme
.ft_ies_len
= ies_len
;
1021 static void sme_deauth(struct wpa_supplicant
*wpa_s
)
1025 bssid_changed
= !is_zero_ether_addr(wpa_s
->bssid
);
1027 if (wpa_drv_deauthenticate(wpa_s
, wpa_s
->pending_bssid
,
1028 WLAN_REASON_DEAUTH_LEAVING
) < 0) {
1029 wpa_msg(wpa_s
, MSG_INFO
, "SME: Deauth request to the driver "
1032 wpa_s
->sme
.prev_bssid_set
= 0;
1034 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
1035 wpa_supplicant_set_state(wpa_s
, WPA_DISCONNECTED
);
1036 os_memset(wpa_s
->bssid
, 0, ETH_ALEN
);
1037 os_memset(wpa_s
->pending_bssid
, 0, ETH_ALEN
);
1039 wpas_notify_bssid_changed(wpa_s
);
1043 void sme_event_assoc_reject(struct wpa_supplicant
*wpa_s
,
1044 union wpa_event_data
*data
)
1046 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Association with " MACSTR
" failed: "
1047 "status code %d", MAC2STR(wpa_s
->pending_bssid
),
1048 data
->assoc_reject
.status_code
);
1050 eloop_cancel_timeout(sme_assoc_timer
, wpa_s
, NULL
);
1053 if (wpa_s
->sme
.sae_pmksa_caching
&& wpa_s
->current_ssid
&&
1054 wpa_key_mgmt_sae(wpa_s
->current_ssid
->key_mgmt
)) {
1055 wpa_dbg(wpa_s
, MSG_DEBUG
,
1056 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1057 wpa_sm_aborted_cached(wpa_s
->wpa
);
1058 wpa_sm_pmksa_cache_flush(wpa_s
->wpa
, wpa_s
->current_ssid
);
1059 if (wpa_s
->current_bss
) {
1060 struct wpa_bss
*bss
= wpa_s
->current_bss
;
1061 struct wpa_ssid
*ssid
= wpa_s
->current_ssid
;
1063 wpa_drv_deauthenticate(wpa_s
, wpa_s
->pending_bssid
,
1064 WLAN_REASON_DEAUTH_LEAVING
);
1065 wpas_connect_work_done(wpa_s
);
1066 wpa_supplicant_mark_disassoc(wpa_s
);
1067 wpa_supplicant_connect(wpa_s
, bss
, ssid
);
1071 #endif /* CONFIG_SAE */
1074 * For now, unconditionally terminate the previous authentication. In
1075 * theory, this should not be needed, but mac80211 gets quite confused
1076 * if the authentication is left pending.. Some roaming cases might
1077 * benefit from using the previous authentication, so this could be
1078 * optimized in the future.
1084 void sme_event_auth_timed_out(struct wpa_supplicant
*wpa_s
,
1085 union wpa_event_data
*data
)
1087 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Authentication timed out");
1088 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
1089 wpa_supplicant_mark_disassoc(wpa_s
);
1093 void sme_event_assoc_timed_out(struct wpa_supplicant
*wpa_s
,
1094 union wpa_event_data
*data
)
1096 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Association timed out");
1097 wpas_connection_failed(wpa_s
, wpa_s
->pending_bssid
);
1098 wpa_supplicant_mark_disassoc(wpa_s
);
1102 void sme_event_disassoc(struct wpa_supplicant
*wpa_s
,
1103 struct disassoc_info
*info
)
1105 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Disassociation event received");
1106 if (wpa_s
->sme
.prev_bssid_set
) {
1108 * cfg80211/mac80211 can get into somewhat confused state if
1109 * the AP only disassociates us and leaves us in authenticated
1110 * state. For now, force the state to be cleared to avoid
1111 * confusing errors if we try to associate with the AP again.
1113 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Deauthenticate to clear "
1115 wpa_drv_deauthenticate(wpa_s
, wpa_s
->sme
.prev_bssid
,
1116 WLAN_REASON_DEAUTH_LEAVING
);
1121 static void sme_auth_timer(void *eloop_ctx
, void *timeout_ctx
)
1123 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
1124 if (wpa_s
->wpa_state
== WPA_AUTHENTICATING
) {
1125 wpa_msg(wpa_s
, MSG_DEBUG
, "SME: Authentication timeout");
1131 static void sme_assoc_timer(void *eloop_ctx
, void *timeout_ctx
)
1133 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
1134 if (wpa_s
->wpa_state
== WPA_ASSOCIATING
) {
1135 wpa_msg(wpa_s
, MSG_DEBUG
, "SME: Association timeout");
1141 void sme_state_changed(struct wpa_supplicant
*wpa_s
)
1143 /* Make sure timers are cleaned up appropriately. */
1144 if (wpa_s
->wpa_state
!= WPA_ASSOCIATING
)
1145 eloop_cancel_timeout(sme_assoc_timer
, wpa_s
, NULL
);
1146 if (wpa_s
->wpa_state
!= WPA_AUTHENTICATING
)
1147 eloop_cancel_timeout(sme_auth_timer
, wpa_s
, NULL
);
1151 void sme_disassoc_while_authenticating(struct wpa_supplicant
*wpa_s
,
1152 const u8
*prev_pending_bssid
)
1155 * mac80211-workaround to force deauth on failed auth cmd,
1156 * requires us to remain in authenticating state to allow the
1157 * second authentication attempt to be continued properly.
1159 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Allow pending authentication "
1160 "to proceed after disconnection event");
1161 wpa_supplicant_set_state(wpa_s
, WPA_AUTHENTICATING
);
1162 os_memcpy(wpa_s
->pending_bssid
, prev_pending_bssid
, ETH_ALEN
);
1165 * Re-arm authentication timer in case auth fails for whatever reason.
1167 eloop_cancel_timeout(sme_auth_timer
, wpa_s
, NULL
);
1168 eloop_register_timeout(SME_AUTH_TIMEOUT
, 0, sme_auth_timer
, wpa_s
,
1173 void sme_clear_on_disassoc(struct wpa_supplicant
*wpa_s
)
1175 wpa_s
->sme
.prev_bssid_set
= 0;
1177 wpabuf_free(wpa_s
->sme
.sae_token
);
1178 wpa_s
->sme
.sae_token
= NULL
;
1179 sae_clear_data(&wpa_s
->sme
.sae
);
1180 #endif /* CONFIG_SAE */
1181 #ifdef CONFIG_IEEE80211R
1182 if (wpa_s
->sme
.ft_ies
)
1183 sme_update_ft_ies(wpa_s
, NULL
, NULL
, 0);
1184 #endif /* CONFIG_IEEE80211R */
1188 void sme_deinit(struct wpa_supplicant
*wpa_s
)
1190 os_free(wpa_s
->sme
.ft_ies
);
1191 wpa_s
->sme
.ft_ies
= NULL
;
1192 wpa_s
->sme
.ft_ies_len
= 0;
1193 #ifdef CONFIG_IEEE80211W
1194 sme_stop_sa_query(wpa_s
);
1195 #endif /* CONFIG_IEEE80211W */
1196 sme_clear_on_disassoc(wpa_s
);
1198 eloop_cancel_timeout(sme_assoc_timer
, wpa_s
, NULL
);
1199 eloop_cancel_timeout(sme_auth_timer
, wpa_s
, NULL
);
1200 eloop_cancel_timeout(sme_obss_scan_timeout
, wpa_s
, NULL
);
1204 static void sme_send_2040_bss_coex(struct wpa_supplicant
*wpa_s
,
1205 const u8
*chan_list
, u8 num_channels
,
1208 struct ieee80211_2040_bss_coex_ie
*bc_ie
;
1209 struct ieee80211_2040_intol_chan_report
*ic_report
;
1212 wpa_printf(MSG_DEBUG
, "SME: Send 20/40 BSS Coexistence to " MACSTR
1213 " (num_channels=%u num_intol=%u)",
1214 MAC2STR(wpa_s
->bssid
), num_channels
, num_intol
);
1215 wpa_hexdump(MSG_DEBUG
, "SME: 20/40 BSS Intolerant Channels",
1216 chan_list
, num_channels
);
1218 buf
= wpabuf_alloc(2 + /* action.category + action_code */
1219 sizeof(struct ieee80211_2040_bss_coex_ie
) +
1220 sizeof(struct ieee80211_2040_intol_chan_report
) +
1225 wpabuf_put_u8(buf
, WLAN_ACTION_PUBLIC
);
1226 wpabuf_put_u8(buf
, WLAN_PA_20_40_BSS_COEX
);
1228 bc_ie
= wpabuf_put(buf
, sizeof(*bc_ie
));
1229 bc_ie
->element_id
= WLAN_EID_20_40_BSS_COEXISTENCE
;
1232 bc_ie
->coex_param
|= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ
;
1234 if (num_channels
> 0) {
1235 ic_report
= wpabuf_put(buf
, sizeof(*ic_report
));
1236 ic_report
->element_id
= WLAN_EID_20_40_BSS_INTOLERANT
;
1237 ic_report
->length
= num_channels
+ 1;
1238 ic_report
->op_class
= 0;
1239 os_memcpy(wpabuf_put(buf
, num_channels
), chan_list
,
1243 if (wpa_drv_send_action(wpa_s
, wpa_s
->assoc_freq
, 0, wpa_s
->bssid
,
1244 wpa_s
->own_addr
, wpa_s
->bssid
,
1245 wpabuf_head(buf
), wpabuf_len(buf
), 0) < 0) {
1246 wpa_msg(wpa_s
, MSG_INFO
,
1247 "SME: Failed to send 20/40 BSS Coexistence frame");
1254 int sme_proc_obss_scan(struct wpa_supplicant
*wpa_s
)
1256 struct wpa_bss
*bss
;
1259 u8 chan_list
[P2P_MAX_CHANNELS
], channel
;
1260 u8 num_channels
= 0, num_intol
= 0, i
;
1262 if (!wpa_s
->sme
.sched_obss_scan
)
1265 wpa_s
->sme
.sched_obss_scan
= 0;
1266 if (!wpa_s
->current_bss
|| wpa_s
->wpa_state
!= WPA_COMPLETED
)
1270 * Check whether AP uses regulatory triplet or channel triplet in
1271 * country info. Right now the operating class of the BSS channel
1272 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1273 * based on the assumption that operating class triplet is not used in
1274 * beacon frame. If the First Channel Number/Operating Extension
1275 * Identifier octet has a positive integer value of 201 or greater,
1276 * then its operating class triplet.
1278 * TODO: If Supported Operating Classes element is present in beacon
1279 * frame, have to lookup operating class in Annex E and fill them in
1282 ie
= wpa_bss_get_ie(wpa_s
->current_bss
, WLAN_EID_COUNTRY
);
1283 if (ie
&& (ie
[1] >= 6) && (ie
[5] >= 201))
1286 os_memset(chan_list
, 0, sizeof(chan_list
));
1288 dl_list_for_each(bss
, &wpa_s
->bss
, struct wpa_bss
, list
) {
1289 /* Skip other band bss */
1290 enum hostapd_hw_mode mode
;
1291 mode
= ieee80211_freq_to_chan(bss
->freq
, &channel
);
1292 if (mode
!= HOSTAPD_MODE_IEEE80211G
&&
1293 mode
!= HOSTAPD_MODE_IEEE80211B
)
1296 ie
= wpa_bss_get_ie(bss
, WLAN_EID_HT_CAP
);
1297 ht_cap
= (ie
&& (ie
[1] == 26)) ? WPA_GET_LE16(ie
+ 2) : 0;
1298 wpa_printf(MSG_DEBUG
, "SME OBSS scan BSS " MACSTR
1299 " freq=%u chan=%u ht_cap=0x%x",
1300 MAC2STR(bss
->bssid
), bss
->freq
, channel
, ht_cap
);
1302 if (!ht_cap
|| (ht_cap
& HT_CAP_INFO_40MHZ_INTOLERANT
)) {
1303 if (ht_cap
& HT_CAP_INFO_40MHZ_INTOLERANT
)
1306 /* Check whether the channel is already considered */
1307 for (i
= 0; i
< num_channels
; i
++) {
1308 if (channel
== chan_list
[i
])
1311 if (i
!= num_channels
)
1314 chan_list
[num_channels
++] = channel
;
1318 sme_send_2040_bss_coex(wpa_s
, chan_list
, num_channels
, num_intol
);
1323 static struct hostapd_hw_modes
* get_mode(struct hostapd_hw_modes
*modes
,
1325 enum hostapd_hw_mode mode
)
1329 for (i
= 0; i
< num_modes
; i
++) {
1330 if (modes
[i
].mode
== mode
)
1338 static void wpa_obss_scan_freqs_list(struct wpa_supplicant
*wpa_s
,
1339 struct wpa_driver_scan_params
*params
)
1341 /* Include only affected channels */
1342 struct hostapd_hw_modes
*mode
;
1346 mode
= get_mode(wpa_s
->hw
.modes
, wpa_s
->hw
.num_modes
,
1347 HOSTAPD_MODE_IEEE80211G
);
1349 /* No channels supported in this band - use empty list */
1350 params
->freqs
= os_zalloc(sizeof(int));
1354 if (wpa_s
->sme
.ht_sec_chan
== HT_SEC_CHAN_UNKNOWN
&&
1355 wpa_s
->current_bss
) {
1358 ie
= wpa_bss_get_ie(wpa_s
->current_bss
, WLAN_EID_HT_OPERATION
);
1359 if (ie
&& ie
[1] >= 2) {
1362 o
= ie
[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK
;
1363 if (o
== HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE
)
1364 wpa_s
->sme
.ht_sec_chan
= HT_SEC_CHAN_ABOVE
;
1365 else if (o
== HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW
)
1366 wpa_s
->sme
.ht_sec_chan
= HT_SEC_CHAN_BELOW
;
1370 start
= wpa_s
->assoc_freq
- 10;
1371 end
= wpa_s
->assoc_freq
+ 10;
1372 switch (wpa_s
->sme
.ht_sec_chan
) {
1373 case HT_SEC_CHAN_UNKNOWN
:
1374 /* HT40+ possible on channels 1..9 */
1375 if (wpa_s
->assoc_freq
<= 2452)
1377 /* HT40- possible on channels 5-13 */
1378 if (wpa_s
->assoc_freq
>= 2432)
1381 case HT_SEC_CHAN_ABOVE
:
1384 case HT_SEC_CHAN_BELOW
:
1388 wpa_printf(MSG_DEBUG
,
1389 "OBSS: assoc_freq %d possible affected range %d-%d",
1390 wpa_s
->assoc_freq
, start
, end
);
1392 params
->freqs
= os_calloc(mode
->num_channels
+ 1, sizeof(int));
1393 if (params
->freqs
== NULL
)
1395 for (count
= 0, i
= 0; i
< mode
->num_channels
; i
++) {
1398 if (mode
->channels
[i
].flag
& HOSTAPD_CHAN_DISABLED
)
1400 freq
= mode
->channels
[i
].freq
;
1401 if (freq
- 10 >= end
|| freq
+ 10 <= start
)
1402 continue; /* not affected */
1403 params
->freqs
[count
++] = freq
;
1408 static void sme_obss_scan_timeout(void *eloop_ctx
, void *timeout_ctx
)
1410 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
1411 struct wpa_driver_scan_params params
;
1413 if (!wpa_s
->current_bss
) {
1414 wpa_printf(MSG_DEBUG
, "SME OBSS: Ignore scan request");
1418 os_memset(¶ms
, 0, sizeof(params
));
1419 wpa_obss_scan_freqs_list(wpa_s
, ¶ms
);
1420 params
.low_priority
= 1;
1421 wpa_printf(MSG_DEBUG
, "SME OBSS: Request an OBSS scan");
1423 if (wpa_supplicant_trigger_scan(wpa_s
, ¶ms
))
1424 wpa_printf(MSG_DEBUG
, "SME OBSS: Failed to trigger scan");
1426 wpa_s
->sme
.sched_obss_scan
= 1;
1427 os_free(params
.freqs
);
1429 eloop_register_timeout(wpa_s
->sme
.obss_scan_int
, 0,
1430 sme_obss_scan_timeout
, wpa_s
, NULL
);
1434 void sme_sched_obss_scan(struct wpa_supplicant
*wpa_s
, int enable
)
1437 struct wpa_bss
*bss
= wpa_s
->current_bss
;
1438 struct wpa_ssid
*ssid
= wpa_s
->current_ssid
;
1439 struct hostapd_hw_modes
*hw_mode
= NULL
;
1442 eloop_cancel_timeout(sme_obss_scan_timeout
, wpa_s
, NULL
);
1443 wpa_s
->sme
.sched_obss_scan
= 0;
1444 wpa_s
->sme
.ht_sec_chan
= HT_SEC_CHAN_UNKNOWN
;
1449 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1450 * or it expects OBSS scan to be performed by wpa_supplicant.
1452 if (!((wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_SME
) ||
1453 (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_OBSS_SCAN
)) ||
1454 ssid
== NULL
|| ssid
->mode
!= IEEE80211_MODE_INFRA
)
1457 if (!wpa_s
->hw
.modes
)
1460 /* only HT caps in 11g mode are relevant */
1461 for (i
= 0; i
< wpa_s
->hw
.num_modes
; i
++) {
1462 hw_mode
= &wpa_s
->hw
.modes
[i
];
1463 if (hw_mode
->mode
== HOSTAPD_MODE_IEEE80211G
)
1467 /* Driver does not support HT40 for 11g or doesn't have 11g. */
1468 if (i
== wpa_s
->hw
.num_modes
|| !hw_mode
||
1469 !(hw_mode
->ht_capab
& HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET
))
1472 if (bss
== NULL
|| bss
->freq
< 2400 || bss
->freq
> 2500)
1473 return; /* Not associated on 2.4 GHz band */
1475 /* Check whether AP supports HT40 */
1476 ie
= wpa_bss_get_ie(wpa_s
->current_bss
, WLAN_EID_HT_CAP
);
1477 if (!ie
|| ie
[1] < 2 ||
1478 !(WPA_GET_LE16(ie
+ 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET
))
1479 return; /* AP does not support HT40 */
1481 ie
= wpa_bss_get_ie(wpa_s
->current_bss
,
1482 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS
);
1483 if (!ie
|| ie
[1] < 14)
1484 return; /* AP does not request OBSS scans */
1486 wpa_s
->sme
.obss_scan_int
= WPA_GET_LE16(ie
+ 6);
1487 if (wpa_s
->sme
.obss_scan_int
< 10) {
1488 wpa_printf(MSG_DEBUG
, "SME: Invalid OBSS Scan Interval %u "
1489 "replaced with the minimum 10 sec",
1490 wpa_s
->sme
.obss_scan_int
);
1491 wpa_s
->sme
.obss_scan_int
= 10;
1493 wpa_printf(MSG_DEBUG
, "SME: OBSS Scan Interval %u sec",
1494 wpa_s
->sme
.obss_scan_int
);
1495 eloop_register_timeout(wpa_s
->sme
.obss_scan_int
, 0,
1496 sme_obss_scan_timeout
, wpa_s
, NULL
);
1500 #ifdef CONFIG_IEEE80211W
1502 static const unsigned int sa_query_max_timeout
= 1000;
1503 static const unsigned int sa_query_retry_timeout
= 201;
1505 static int sme_check_sa_query_timeout(struct wpa_supplicant
*wpa_s
)
1508 struct os_reltime now
, passed
;
1509 os_get_reltime(&now
);
1510 os_reltime_sub(&now
, &wpa_s
->sme
.sa_query_start
, &passed
);
1511 tu
= (passed
.sec
* 1000000 + passed
.usec
) / 1024;
1512 if (sa_query_max_timeout
< tu
) {
1513 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: SA Query timed out");
1514 sme_stop_sa_query(wpa_s
);
1515 wpa_supplicant_deauthenticate(
1516 wpa_s
, WLAN_REASON_PREV_AUTH_NOT_VALID
);
1524 static void sme_send_sa_query_req(struct wpa_supplicant
*wpa_s
,
1527 u8 req
[2 + WLAN_SA_QUERY_TR_ID_LEN
];
1528 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Sending SA Query Request to "
1529 MACSTR
, MAC2STR(wpa_s
->bssid
));
1530 wpa_hexdump(MSG_DEBUG
, "SME: SA Query Transaction ID",
1531 trans_id
, WLAN_SA_QUERY_TR_ID_LEN
);
1532 req
[0] = WLAN_ACTION_SA_QUERY
;
1533 req
[1] = WLAN_SA_QUERY_REQUEST
;
1534 os_memcpy(req
+ 2, trans_id
, WLAN_SA_QUERY_TR_ID_LEN
);
1535 if (wpa_drv_send_action(wpa_s
, wpa_s
->assoc_freq
, 0, wpa_s
->bssid
,
1536 wpa_s
->own_addr
, wpa_s
->bssid
,
1537 req
, sizeof(req
), 0) < 0)
1538 wpa_msg(wpa_s
, MSG_INFO
, "SME: Failed to send SA Query "
1543 static void sme_sa_query_timer(void *eloop_ctx
, void *timeout_ctx
)
1545 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
1546 unsigned int timeout
, sec
, usec
;
1547 u8
*trans_id
, *nbuf
;
1549 if (wpa_s
->sme
.sa_query_count
> 0 &&
1550 sme_check_sa_query_timeout(wpa_s
))
1553 nbuf
= os_realloc_array(wpa_s
->sme
.sa_query_trans_id
,
1554 wpa_s
->sme
.sa_query_count
+ 1,
1555 WLAN_SA_QUERY_TR_ID_LEN
);
1558 if (wpa_s
->sme
.sa_query_count
== 0) {
1559 /* Starting a new SA Query procedure */
1560 os_get_reltime(&wpa_s
->sme
.sa_query_start
);
1562 trans_id
= nbuf
+ wpa_s
->sme
.sa_query_count
* WLAN_SA_QUERY_TR_ID_LEN
;
1563 wpa_s
->sme
.sa_query_trans_id
= nbuf
;
1564 wpa_s
->sme
.sa_query_count
++;
1566 if (os_get_random(trans_id
, WLAN_SA_QUERY_TR_ID_LEN
) < 0) {
1567 wpa_printf(MSG_DEBUG
, "Could not generate SA Query ID");
1571 timeout
= sa_query_retry_timeout
;
1572 sec
= ((timeout
/ 1000) * 1024) / 1000;
1573 usec
= (timeout
% 1000) * 1024;
1574 eloop_register_timeout(sec
, usec
, sme_sa_query_timer
, wpa_s
, NULL
);
1576 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Association SA Query attempt %d",
1577 wpa_s
->sme
.sa_query_count
);
1579 sme_send_sa_query_req(wpa_s
, trans_id
);
1583 static void sme_start_sa_query(struct wpa_supplicant
*wpa_s
)
1585 sme_sa_query_timer(wpa_s
, NULL
);
1589 static void sme_stop_sa_query(struct wpa_supplicant
*wpa_s
)
1591 eloop_cancel_timeout(sme_sa_query_timer
, wpa_s
, NULL
);
1592 os_free(wpa_s
->sme
.sa_query_trans_id
);
1593 wpa_s
->sme
.sa_query_trans_id
= NULL
;
1594 wpa_s
->sme
.sa_query_count
= 0;
1598 void sme_event_unprot_disconnect(struct wpa_supplicant
*wpa_s
, const u8
*sa
,
1599 const u8
*da
, u16 reason_code
)
1601 struct wpa_ssid
*ssid
;
1602 struct os_reltime now
;
1604 if (wpa_s
->wpa_state
!= WPA_COMPLETED
)
1606 ssid
= wpa_s
->current_ssid
;
1607 if (wpas_get_ssid_pmf(wpa_s
, ssid
) == NO_MGMT_FRAME_PROTECTION
)
1609 if (os_memcmp(sa
, wpa_s
->bssid
, ETH_ALEN
) != 0)
1611 if (reason_code
!= WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA
&&
1612 reason_code
!= WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA
)
1614 if (wpa_s
->sme
.sa_query_count
> 0)
1617 os_get_reltime(&now
);
1618 if (wpa_s
->sme
.last_unprot_disconnect
.sec
&&
1619 !os_reltime_expired(&now
, &wpa_s
->sme
.last_unprot_disconnect
, 10))
1620 return; /* limit SA Query procedure frequency */
1621 wpa_s
->sme
.last_unprot_disconnect
= now
;
1623 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Unprotected disconnect dropped - "
1624 "possible AP/STA state mismatch - trigger SA Query");
1625 sme_start_sa_query(wpa_s
);
1629 void sme_sa_query_rx(struct wpa_supplicant
*wpa_s
, const u8
*sa
,
1630 const u8
*data
, size_t len
)
1634 if (wpa_s
->sme
.sa_query_trans_id
== NULL
||
1635 len
< 1 + WLAN_SA_QUERY_TR_ID_LEN
||
1636 data
[0] != WLAN_SA_QUERY_RESPONSE
)
1638 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Received SA Query response from "
1639 MACSTR
" (trans_id %02x%02x)", MAC2STR(sa
), data
[1], data
[2]);
1641 if (os_memcmp(sa
, wpa_s
->bssid
, ETH_ALEN
) != 0)
1644 for (i
= 0; i
< wpa_s
->sme
.sa_query_count
; i
++) {
1645 if (os_memcmp(wpa_s
->sme
.sa_query_trans_id
+
1646 i
* WLAN_SA_QUERY_TR_ID_LEN
,
1647 data
+ 1, WLAN_SA_QUERY_TR_ID_LEN
) == 0)
1651 if (i
>= wpa_s
->sme
.sa_query_count
) {
1652 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: No matching SA Query "
1653 "transaction identifier found");
1657 wpa_dbg(wpa_s
, MSG_DEBUG
, "SME: Reply to pending SA Query received "
1658 "from " MACSTR
, MAC2STR(sa
));
1659 sme_stop_sa_query(wpa_s
);
1662 #endif /* CONFIG_IEEE80211W */