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 (wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE)) {
491 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
492 len = sizeof(wpa_s->sme.assoc_req_ie) -
493 wpa_s->sme.assoc_req_ie_len;
494 res = wpas_mbo_ie(wpa_s, pos, len);
496 wpa_s->sme.assoc_req_ie_len += res;
498 #endif /* CONFIG_MBO */
501 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
502 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0)
504 wpa_dbg(wpa_s, MSG_DEBUG,
505 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
506 params.auth_alg = WPA_AUTH_ALG_OPEN;
507 wpa_s->sme.sae_pmksa_caching = 1;
510 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
512 resp = sme_auth_build_sae_commit(wpa_s, ssid,
515 resp = sme_auth_build_sae_confirm(wpa_s);
517 wpas_connection_failed(wpa_s, bss->bssid);
520 params.sae_data = wpabuf_head(resp);
521 params.sae_data_len = wpabuf_len(resp);
522 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
524 #endif /* CONFIG_SAE */
526 wpa_supplicant_cancel_sched_scan(wpa_s);
527 wpa_supplicant_cancel_scan(wpa_s);
529 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
530 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
531 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
533 wpa_clear_keys(wpa_s, bss->bssid);
534 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
535 old_ssid = wpa_s->current_ssid;
536 wpa_s->current_ssid = ssid;
537 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
538 wpa_supplicant_initiate_eapol(wpa_s);
539 if (old_ssid != wpa_s->current_ssid)
540 wpas_notify_network_changed(wpa_s);
544 * If multi-channel concurrency is not supported, check for any
545 * frequency conflict. In case of any frequency conflict, remove the
546 * least prioritized connection.
548 if (wpa_s->num_multichan_concurrent < 2) {
550 num = get_shared_radio_freqs(wpa_s, &freq, 1);
551 if (num > 0 && freq > 0 && freq != params.freq) {
552 wpa_printf(MSG_DEBUG,
553 "Conflicting frequency found (%d != %d)",
555 if (wpas_p2p_handle_frequency_conflicts(wpa_s,
558 wpas_connection_failed(wpa_s, bss->bssid);
559 wpa_supplicant_mark_disassoc(wpa_s);
561 wpas_connect_work_done(wpa_s);
566 #endif /* CONFIG_P2P */
569 wpa_msg(wpa_s, MSG_DEBUG,
570 "SME: Skip authentication step on reassoc-to-same-BSS");
572 sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
577 wpa_s->sme.auth_alg = params.auth_alg;
578 if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) {
579 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
581 wpas_connection_failed(wpa_s, bss->bssid);
582 wpa_supplicant_mark_disassoc(wpa_s);
584 wpas_connect_work_done(wpa_s);
588 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
592 * Association will be started based on the authentication event from
600 static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
602 struct wpa_connect_work *cwork = work->ctx;
603 struct wpa_supplicant *wpa_s = work->wpa_s;
607 wpa_s->connect_work = NULL;
609 wpas_connect_work_free(cwork);
613 wpa_s->connect_work = work;
615 if (cwork->bss_removed ||
616 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) ||
617 wpas_network_disabled(wpa_s, cwork->ssid)) {
618 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
619 wpas_connect_work_done(wpa_s);
623 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
627 void sme_authenticate(struct wpa_supplicant *wpa_s,
628 struct wpa_bss *bss, struct wpa_ssid *ssid)
630 struct wpa_connect_work *cwork;
632 if (bss == NULL || ssid == NULL)
634 if (wpa_s->connect_work) {
635 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
639 if (radio_work_pending(wpa_s, "sme-connect")) {
641 * The previous sme-connect work might no longer be valid due to
642 * the fact that the BSS list was updated. In addition, it makes
643 * sense to adhere to the 'newer' decision.
645 wpa_dbg(wpa_s, MSG_DEBUG,
646 "SME: Remove previous pending sme-connect");
647 radio_remove_works(wpa_s, "sme-connect", 0);
650 wpas_abort_ongoing_scan(wpa_s);
652 cwork = os_zalloc(sizeof(*cwork));
660 wpa_s->sme.sae.state = SAE_NOTHING;
661 wpa_s->sme.sae.send_confirm = 0;
662 wpa_s->sme.sae_group_index = 0;
663 #endif /* CONFIG_SAE */
665 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
666 sme_auth_start_cb, cwork) < 0)
667 wpas_connect_work_free(cwork);
673 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
674 u16 status_code, const u8 *data, size_t len)
678 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
679 "status code %u", auth_transaction, status_code);
681 if (auth_transaction == 1 &&
682 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
683 wpa_s->sme.sae.state == SAE_COMMITTED &&
684 wpa_s->current_bss && wpa_s->current_ssid) {
685 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
688 groups = wpa_s->conf->sae_groups;
689 if (!groups || groups[0] <= 0)
690 groups = default_groups;
692 if (len < sizeof(le16)) {
693 wpa_dbg(wpa_s, MSG_DEBUG,
694 "SME: Too short SAE anti-clogging token request");
697 group = WPA_GET_LE16(data);
698 wpa_dbg(wpa_s, MSG_DEBUG,
699 "SME: SAE anti-clogging token requested (group %u)",
701 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
702 WLAN_STATUS_SUCCESS) {
703 wpa_dbg(wpa_s, MSG_ERROR,
704 "SME: SAE group %u of anti-clogging request is invalid",
708 wpabuf_free(wpa_s->sme.sae_token);
709 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
711 sme_send_authentication(wpa_s, wpa_s->current_bss,
712 wpa_s->current_ssid, 1);
716 if (auth_transaction == 1 &&
717 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
718 wpa_s->sme.sae.state == SAE_COMMITTED &&
719 wpa_s->current_bss && wpa_s->current_ssid) {
720 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
721 wpa_s->sme.sae_group_index++;
722 if (sme_set_sae_group(wpa_s) < 0)
723 return -1; /* no other groups enabled */
724 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
725 sme_send_authentication(wpa_s, wpa_s->current_bss,
726 wpa_s->current_ssid, 1);
730 if (status_code != WLAN_STATUS_SUCCESS)
733 if (auth_transaction == 1) {
736 groups = wpa_s->conf->sae_groups;
738 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
739 if (wpa_s->current_bss == NULL ||
740 wpa_s->current_ssid == NULL)
742 if (wpa_s->sme.sae.state != SAE_COMMITTED)
744 if (groups && groups[0] <= 0)
746 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
748 if (res == SAE_SILENTLY_DISCARD) {
749 wpa_printf(MSG_DEBUG,
750 "SAE: Drop commit message due to reflection attack");
753 if (res != WLAN_STATUS_SUCCESS)
756 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
757 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
762 wpabuf_free(wpa_s->sme.sae_token);
763 wpa_s->sme.sae_token = NULL;
764 sme_send_authentication(wpa_s, wpa_s->current_bss,
765 wpa_s->current_ssid, 0);
767 } else if (auth_transaction == 2) {
768 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
769 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
771 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
773 wpa_s->sme.sae.state = SAE_ACCEPTED;
774 sae_clear_temp_data(&wpa_s->sme.sae);
780 #endif /* CONFIG_SAE */
783 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
785 struct wpa_ssid *ssid = wpa_s->current_ssid;
788 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
789 "when network is not selected");
793 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
794 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
795 "when not in authenticating state");
799 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
800 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
801 "unexpected peer " MACSTR,
802 MAC2STR(data->auth.peer));
806 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
807 " auth_type=%d auth_transaction=%d status_code=%d",
808 MAC2STR(data->auth.peer), data->auth.auth_type,
809 data->auth.auth_transaction, data->auth.status_code);
810 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
811 data->auth.ies, data->auth.ies_len);
813 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
816 if (data->auth.auth_type == WLAN_AUTH_SAE) {
818 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
819 data->auth.status_code, data->auth.ies,
822 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
823 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
829 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
831 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
832 wpa_s->sme.sae.pmkid, wpa_s->pending_bssid);
834 #endif /* CONFIG_SAE */
836 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
839 if (data->auth.ies && data->auth.ies_len) {
840 size_t buflen = 2 * data->auth.ies_len + 1;
841 ie_txt = os_malloc(buflen);
843 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
847 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
848 " auth_type=%u auth_transaction=%u status_code=%u ie=%s",
849 MAC2STR(data->auth.peer), data->auth.auth_type,
850 data->auth.auth_transaction, data->auth.status_code,
854 if (data->auth.status_code !=
855 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
856 wpa_s->sme.auth_alg == data->auth.auth_type ||
857 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
858 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
859 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
863 wpas_connect_work_done(wpa_s);
865 switch (data->auth.auth_type) {
867 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
869 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
870 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
871 wpa_s->current_ssid);
874 case WLAN_AUTH_SHARED_KEY:
875 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
877 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
878 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
879 wpa_s->current_ssid);
887 #ifdef CONFIG_IEEE80211R
888 if (data->auth.auth_type == WLAN_AUTH_FT) {
889 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
890 data->auth.ies_len, 0,
891 data->auth.peer, NULL, 0) < 0) {
892 wpa_dbg(wpa_s, MSG_DEBUG,
893 "SME: FT Authentication response processing failed");
894 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
896 " reason=%d locally_generated=1",
897 MAC2STR(wpa_s->pending_bssid),
898 WLAN_REASON_DEAUTH_LEAVING);
899 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
900 wpa_supplicant_mark_disassoc(wpa_s);
904 #endif /* CONFIG_IEEE80211R */
906 sme_associate(wpa_s, ssid->mode, data->auth.peer,
907 data->auth.auth_type);
911 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
912 const u8 *bssid, u16 auth_type)
914 struct wpa_driver_associate_params params;
915 struct ieee802_11_elems elems;
916 #ifdef CONFIG_HT_OVERRIDES
917 struct ieee80211_ht_capabilities htcaps;
918 struct ieee80211_ht_capabilities htcaps_mask;
919 #endif /* CONFIG_HT_OVERRIDES */
920 #ifdef CONFIG_VHT_OVERRIDES
921 struct ieee80211_vht_capabilities vhtcaps;
922 struct ieee80211_vht_capabilities vhtcaps_mask;
923 #endif /* CONFIG_VHT_OVERRIDES */
925 os_memset(¶ms, 0, sizeof(params));
926 params.bssid = bssid;
927 params.ssid = wpa_s->sme.ssid;
928 params.ssid_len = wpa_s->sme.ssid_len;
929 params.freq.freq = wpa_s->sme.freq;
930 params.bg_scan_period = wpa_s->current_ssid ?
931 wpa_s->current_ssid->bg_scan_period : -1;
932 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
933 wpa_s->sme.assoc_req_ie : NULL;
934 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
935 params.pairwise_suite = wpa_s->pairwise_cipher;
936 params.group_suite = wpa_s->group_cipher;
937 params.key_mgmt_suite = wpa_s->key_mgmt;
938 params.wpa_proto = wpa_s->wpa_proto;
939 #ifdef CONFIG_HT_OVERRIDES
940 os_memset(&htcaps, 0, sizeof(htcaps));
941 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
942 params.htcaps = (u8 *) &htcaps;
943 params.htcaps_mask = (u8 *) &htcaps_mask;
944 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms);
945 #endif /* CONFIG_HT_OVERRIDES */
946 #ifdef CONFIG_VHT_OVERRIDES
947 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
948 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
949 params.vhtcaps = &vhtcaps;
950 params.vhtcaps_mask = &vhtcaps_mask;
951 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, ¶ms);
952 #endif /* CONFIG_VHT_OVERRIDES */
953 #ifdef CONFIG_IEEE80211R
954 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
955 params.wpa_ie = wpa_s->sme.ft_ies;
956 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
958 #endif /* CONFIG_IEEE80211R */
960 params.mgmt_frame_protection = wpa_s->sme.mfp;
961 params.rrm_used = wpa_s->rrm.rrm_used;
962 if (wpa_s->sme.prev_bssid_set)
963 params.prev_bssid = wpa_s->sme.prev_bssid;
965 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
966 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
967 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
970 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
972 if (params.wpa_ie == NULL ||
973 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
975 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
976 os_memset(&elems, 0, sizeof(elems));
979 params.wpa_proto = WPA_PROTO_RSN;
980 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
981 elems.rsn_ie_len + 2);
982 } else if (elems.wpa_ie) {
983 params.wpa_proto = WPA_PROTO_WPA;
984 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
985 elems.wpa_ie_len + 2);
986 } else if (elems.osen) {
987 params.wpa_proto = WPA_PROTO_OSEN;
988 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
991 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
992 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
995 if (wpa_s->parent->set_sta_uapsd)
996 params.uapsd = wpa_s->parent->sta_uapsd;
1000 if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
1001 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
1003 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1004 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1005 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1009 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
1014 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
1015 const u8 *ies, size_t ies_len)
1017 if (md == NULL || ies == NULL) {
1018 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
1019 os_free(wpa_s->sme.ft_ies);
1020 wpa_s->sme.ft_ies = NULL;
1021 wpa_s->sme.ft_ies_len = 0;
1022 wpa_s->sme.ft_used = 0;
1026 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
1027 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
1028 os_free(wpa_s->sme.ft_ies);
1029 wpa_s->sme.ft_ies = os_malloc(ies_len);
1030 if (wpa_s->sme.ft_ies == NULL)
1032 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
1033 wpa_s->sme.ft_ies_len = ies_len;
1038 static void sme_deauth(struct wpa_supplicant *wpa_s)
1042 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1044 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1045 WLAN_REASON_DEAUTH_LEAVING) < 0) {
1046 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
1049 wpa_s->sme.prev_bssid_set = 0;
1051 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1052 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1053 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1054 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1056 wpas_notify_bssid_changed(wpa_s);
1060 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
1061 union wpa_event_data *data)
1063 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
1064 "status code %d", MAC2STR(wpa_s->pending_bssid),
1065 data->assoc_reject.status_code);
1067 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1070 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
1071 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
1072 wpa_dbg(wpa_s, MSG_DEBUG,
1073 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1074 wpa_sm_aborted_cached(wpa_s->wpa);
1075 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1076 if (wpa_s->current_bss) {
1077 struct wpa_bss *bss = wpa_s->current_bss;
1078 struct wpa_ssid *ssid = wpa_s->current_ssid;
1080 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1081 WLAN_REASON_DEAUTH_LEAVING);
1082 wpas_connect_work_done(wpa_s);
1083 wpa_supplicant_mark_disassoc(wpa_s);
1084 wpa_supplicant_connect(wpa_s, bss, ssid);
1088 #endif /* CONFIG_SAE */
1091 * For now, unconditionally terminate the previous authentication. In
1092 * theory, this should not be needed, but mac80211 gets quite confused
1093 * if the authentication is left pending.. Some roaming cases might
1094 * benefit from using the previous authentication, so this could be
1095 * optimized in the future.
1101 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1102 union wpa_event_data *data)
1104 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
1105 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1106 wpa_supplicant_mark_disassoc(wpa_s);
1110 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1111 union wpa_event_data *data)
1113 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
1114 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1115 wpa_supplicant_mark_disassoc(wpa_s);
1119 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
1120 struct disassoc_info *info)
1122 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
1123 if (wpa_s->sme.prev_bssid_set) {
1125 * cfg80211/mac80211 can get into somewhat confused state if
1126 * the AP only disassociates us and leaves us in authenticated
1127 * state. For now, force the state to be cleared to avoid
1128 * confusing errors if we try to associate with the AP again.
1130 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1132 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
1133 WLAN_REASON_DEAUTH_LEAVING);
1138 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1140 struct wpa_supplicant *wpa_s = eloop_ctx;
1141 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1142 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1148 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1150 struct wpa_supplicant *wpa_s = eloop_ctx;
1151 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1152 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1158 void sme_state_changed(struct wpa_supplicant *wpa_s)
1160 /* Make sure timers are cleaned up appropriately. */
1161 if (wpa_s->wpa_state != WPA_ASSOCIATING)
1162 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1163 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1164 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1168 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1169 const u8 *prev_pending_bssid)
1172 * mac80211-workaround to force deauth on failed auth cmd,
1173 * requires us to remain in authenticating state to allow the
1174 * second authentication attempt to be continued properly.
1176 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1177 "to proceed after disconnection event");
1178 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1179 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1182 * Re-arm authentication timer in case auth fails for whatever reason.
1184 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1185 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
1190 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
1192 wpa_s->sme.prev_bssid_set = 0;
1194 wpabuf_free(wpa_s->sme.sae_token);
1195 wpa_s->sme.sae_token = NULL;
1196 sae_clear_data(&wpa_s->sme.sae);
1197 #endif /* CONFIG_SAE */
1198 #ifdef CONFIG_IEEE80211R
1199 if (wpa_s->sme.ft_ies)
1200 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
1201 #endif /* CONFIG_IEEE80211R */
1205 void sme_deinit(struct wpa_supplicant *wpa_s)
1207 os_free(wpa_s->sme.ft_ies);
1208 wpa_s->sme.ft_ies = NULL;
1209 wpa_s->sme.ft_ies_len = 0;
1210 #ifdef CONFIG_IEEE80211W
1211 sme_stop_sa_query(wpa_s);
1212 #endif /* CONFIG_IEEE80211W */
1213 sme_clear_on_disassoc(wpa_s);
1215 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1216 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1217 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1221 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
1222 const u8 *chan_list, u8 num_channels,
1225 struct ieee80211_2040_bss_coex_ie *bc_ie;
1226 struct ieee80211_2040_intol_chan_report *ic_report;
1229 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
1230 " (num_channels=%u num_intol=%u)",
1231 MAC2STR(wpa_s->bssid), num_channels, num_intol);
1232 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
1233 chan_list, num_channels);
1235 buf = wpabuf_alloc(2 + /* action.category + action_code */
1236 sizeof(struct ieee80211_2040_bss_coex_ie) +
1237 sizeof(struct ieee80211_2040_intol_chan_report) +
1242 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
1243 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
1245 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
1246 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
1249 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
1251 if (num_channels > 0) {
1252 ic_report = wpabuf_put(buf, sizeof(*ic_report));
1253 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
1254 ic_report->length = num_channels + 1;
1255 ic_report->op_class = 0;
1256 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
1260 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1261 wpa_s->own_addr, wpa_s->bssid,
1262 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
1263 wpa_msg(wpa_s, MSG_INFO,
1264 "SME: Failed to send 20/40 BSS Coexistence frame");
1271 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1273 struct wpa_bss *bss;
1276 u8 chan_list[P2P_MAX_CHANNELS], channel;
1277 u8 num_channels = 0, num_intol = 0, i;
1279 if (!wpa_s->sme.sched_obss_scan)
1282 wpa_s->sme.sched_obss_scan = 0;
1283 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1287 * Check whether AP uses regulatory triplet or channel triplet in
1288 * country info. Right now the operating class of the BSS channel
1289 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1290 * based on the assumption that operating class triplet is not used in
1291 * beacon frame. If the First Channel Number/Operating Extension
1292 * Identifier octet has a positive integer value of 201 or greater,
1293 * then its operating class triplet.
1295 * TODO: If Supported Operating Classes element is present in beacon
1296 * frame, have to lookup operating class in Annex E and fill them in
1299 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1300 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1303 os_memset(chan_list, 0, sizeof(chan_list));
1305 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1306 /* Skip other band bss */
1307 enum hostapd_hw_mode mode;
1308 mode = ieee80211_freq_to_chan(bss->freq, &channel);
1309 if (mode != HOSTAPD_MODE_IEEE80211G &&
1310 mode != HOSTAPD_MODE_IEEE80211B)
1313 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1314 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
1315 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
1316 " freq=%u chan=%u ht_cap=0x%x",
1317 MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
1319 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
1320 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1323 /* Check whether the channel is already considered */
1324 for (i = 0; i < num_channels; i++) {
1325 if (channel == chan_list[i])
1328 if (i != num_channels)
1331 chan_list[num_channels++] = channel;
1335 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1340 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
1341 struct wpa_driver_scan_params *params)
1343 /* Include only affected channels */
1344 struct hostapd_hw_modes *mode;
1348 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
1349 HOSTAPD_MODE_IEEE80211G);
1351 /* No channels supported in this band - use empty list */
1352 params->freqs = os_zalloc(sizeof(int));
1356 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
1357 wpa_s->current_bss) {
1360 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
1361 if (ie && ie[1] >= 2) {
1364 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
1365 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
1366 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
1367 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
1368 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
1372 start = wpa_s->assoc_freq - 10;
1373 end = wpa_s->assoc_freq + 10;
1374 switch (wpa_s->sme.ht_sec_chan) {
1375 case HT_SEC_CHAN_UNKNOWN:
1376 /* HT40+ possible on channels 1..9 */
1377 if (wpa_s->assoc_freq <= 2452)
1379 /* HT40- possible on channels 5-13 */
1380 if (wpa_s->assoc_freq >= 2432)
1383 case HT_SEC_CHAN_ABOVE:
1386 case HT_SEC_CHAN_BELOW:
1390 wpa_printf(MSG_DEBUG,
1391 "OBSS: assoc_freq %d possible affected range %d-%d",
1392 wpa_s->assoc_freq, start, end);
1394 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
1395 if (params->freqs == NULL)
1397 for (count = 0, i = 0; i < mode->num_channels; i++) {
1400 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1402 freq = mode->channels[i].freq;
1403 if (freq - 10 >= end || freq + 10 <= start)
1404 continue; /* not affected */
1405 params->freqs[count++] = freq;
1410 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1412 struct wpa_supplicant *wpa_s = eloop_ctx;
1413 struct wpa_driver_scan_params params;
1415 if (!wpa_s->current_bss) {
1416 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1420 os_memset(¶ms, 0, sizeof(params));
1421 wpa_obss_scan_freqs_list(wpa_s, ¶ms);
1422 params.low_priority = 1;
1423 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1425 if (wpa_supplicant_trigger_scan(wpa_s, ¶ms))
1426 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1428 wpa_s->sme.sched_obss_scan = 1;
1429 os_free(params.freqs);
1431 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1432 sme_obss_scan_timeout, wpa_s, NULL);
1436 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1439 struct wpa_bss *bss = wpa_s->current_bss;
1440 struct wpa_ssid *ssid = wpa_s->current_ssid;
1441 struct hostapd_hw_modes *hw_mode = NULL;
1444 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1445 wpa_s->sme.sched_obss_scan = 0;
1446 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
1451 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1452 * or it expects OBSS scan to be performed by wpa_supplicant.
1454 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1455 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1456 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1459 if (!wpa_s->hw.modes)
1462 /* only HT caps in 11g mode are relevant */
1463 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1464 hw_mode = &wpa_s->hw.modes[i];
1465 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1469 /* Driver does not support HT40 for 11g or doesn't have 11g. */
1470 if (i == wpa_s->hw.num_modes || !hw_mode ||
1471 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1474 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1475 return; /* Not associated on 2.4 GHz band */
1477 /* Check whether AP supports HT40 */
1478 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1479 if (!ie || ie[1] < 2 ||
1480 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1481 return; /* AP does not support HT40 */
1483 ie = wpa_bss_get_ie(wpa_s->current_bss,
1484 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1485 if (!ie || ie[1] < 14)
1486 return; /* AP does not request OBSS scans */
1488 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1489 if (wpa_s->sme.obss_scan_int < 10) {
1490 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1491 "replaced with the minimum 10 sec",
1492 wpa_s->sme.obss_scan_int);
1493 wpa_s->sme.obss_scan_int = 10;
1495 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1496 wpa_s->sme.obss_scan_int);
1497 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1498 sme_obss_scan_timeout, wpa_s, NULL);
1502 #ifdef CONFIG_IEEE80211W
1504 static const unsigned int sa_query_max_timeout = 1000;
1505 static const unsigned int sa_query_retry_timeout = 201;
1507 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1510 struct os_reltime now, passed;
1511 os_get_reltime(&now);
1512 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
1513 tu = (passed.sec * 1000000 + passed.usec) / 1024;
1514 if (sa_query_max_timeout < tu) {
1515 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
1516 sme_stop_sa_query(wpa_s);
1517 wpa_supplicant_deauthenticate(
1518 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1526 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1529 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
1530 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1531 MACSTR, MAC2STR(wpa_s->bssid));
1532 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1533 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1534 req[0] = WLAN_ACTION_SA_QUERY;
1535 req[1] = WLAN_SA_QUERY_REQUEST;
1536 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1537 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1538 wpa_s->own_addr, wpa_s->bssid,
1539 req, sizeof(req), 0) < 0)
1540 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1545 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1547 struct wpa_supplicant *wpa_s = eloop_ctx;
1548 unsigned int timeout, sec, usec;
1549 u8 *trans_id, *nbuf;
1551 if (wpa_s->sme.sa_query_count > 0 &&
1552 sme_check_sa_query_timeout(wpa_s))
1555 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1556 wpa_s->sme.sa_query_count + 1,
1557 WLAN_SA_QUERY_TR_ID_LEN);
1560 if (wpa_s->sme.sa_query_count == 0) {
1561 /* Starting a new SA Query procedure */
1562 os_get_reltime(&wpa_s->sme.sa_query_start);
1564 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1565 wpa_s->sme.sa_query_trans_id = nbuf;
1566 wpa_s->sme.sa_query_count++;
1568 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
1569 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
1573 timeout = sa_query_retry_timeout;
1574 sec = ((timeout / 1000) * 1024) / 1000;
1575 usec = (timeout % 1000) * 1024;
1576 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1578 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1579 wpa_s->sme.sa_query_count);
1581 sme_send_sa_query_req(wpa_s, trans_id);
1585 static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1587 sme_sa_query_timer(wpa_s, NULL);
1591 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
1593 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1594 os_free(wpa_s->sme.sa_query_trans_id);
1595 wpa_s->sme.sa_query_trans_id = NULL;
1596 wpa_s->sme.sa_query_count = 0;
1600 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1601 const u8 *da, u16 reason_code)
1603 struct wpa_ssid *ssid;
1604 struct os_reltime now;
1606 if (wpa_s->wpa_state != WPA_COMPLETED)
1608 ssid = wpa_s->current_ssid;
1609 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
1611 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1613 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1614 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1616 if (wpa_s->sme.sa_query_count > 0)
1619 os_get_reltime(&now);
1620 if (wpa_s->sme.last_unprot_disconnect.sec &&
1621 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
1622 return; /* limit SA Query procedure frequency */
1623 wpa_s->sme.last_unprot_disconnect = now;
1625 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1626 "possible AP/STA state mismatch - trigger SA Query");
1627 sme_start_sa_query(wpa_s);
1631 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1632 const u8 *data, size_t len)
1636 if (wpa_s->sme.sa_query_trans_id == NULL ||
1637 len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1638 data[0] != WLAN_SA_QUERY_RESPONSE)
1640 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1641 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
1643 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1646 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1647 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1648 i * WLAN_SA_QUERY_TR_ID_LEN,
1649 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1653 if (i >= wpa_s->sme.sa_query_count) {
1654 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1655 "transaction identifier found");
1659 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1660 "from " MACSTR, MAC2STR(sa));
1661 sme_stop_sa_query(wpa_s);
1664 #endif /* CONFIG_IEEE80211W */