text: /*
   * wpa_supplicant - SME
   * Copyright (c) 2009-2014, Jouni Malinen <j@w1.fi>
   *
   * This software may be distributed under the terms of the BSD license.
   * See README for more details.
   */
  
  #include "includes.h"
  
  #include "common.h"
  #include "utils/eloop.h"
  #include "common/ieee802_11_defs.h"
  #include "common/ieee802_11_common.h"
  #include "eapol_supp/eapol_supp_sm.h"
  #include "common/wpa_common.h"
  #include "common/sae.h"
  #include "rsn_supp/wpa.h"
  #include "rsn_supp/pmksa_cache.h"
  #include "config.h"
  #include "wpa_supplicant_i.h"
  #include "driver_i.h"
  #include "wpas_glue.h"
  #include "wps_supplicant.h"
  #include "p2p_supplicant.h"
  #include "notify.h"
  #include "bss.h"
  #include "scan.h"
  #include "sme.h"
  #include "hs20_supplicant.h"
  
  #define SME_AUTH_TIMEOUT 5
  #define SME_ASSOC_TIMEOUT 5
  
  static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
  static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
  static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  #ifdef CONFIG_IEEE80211W
  static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
  #endif /* CONFIG_IEEE80211W */
  
  
  #ifdef CONFIG_SAE
  
  static int index_within_array(const int *array, int idx)
  {
  	int i;
  	for (i = 0; i < idx; i++) {
  		if (array[i] <= 0)
  			return 0;
  	}
  	return 1;
  }
  
  
  static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
  {
  	int *groups = wpa_s->conf->sae_groups;
  	int default_groups[] = { 19, 20, 21, 25, 26, 0 };
  
  	if (!groups || groups[0] <= 0)
  		groups = default_groups;
  
  	/* Configuration may have changed, so validate current index */
  	if (!index_within_array(groups, wpa_s->sme.sae_group_index))
  		return -1;
  
  	for (;;) {
  		int group = groups[wpa_s->sme.sae_group_index];
  		if (group <= 0)
  			break;
  		if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
  				wpa_s->sme.sae.group);
  		       return 0;
  		}
  		wpa_s->sme.sae_group_index++;
  	}
  
  	return -1;
  }
  
  
  static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
  						 struct wpa_ssid *ssid,
  						 const u8 *bssid)
  {
  	struct wpabuf *buf;
  	size_t len;
  
  	if (ssid->passphrase == NULL) {
  		wpa_printf(MSG_DEBUG, "SAE: No password available");
  		return NULL;
  	}
  
  	if (sme_set_sae_group(wpa_s) < 0) {
  		wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
  		return NULL;
  	}
  
  	if (sae_prepare_commit(wpa_s->own_addr, bssid,
  			       (u8 *) ssid->passphrase,
  			       os_strlen(ssid->passphrase),
  			       &wpa_s->sme.sae) < 0) {
  		wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
  		return NULL;
  	}
  
  	len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
  	buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
  	if (buf == NULL)
  		return NULL;
  
  	wpabuf_put_le16(buf, 1); /* Transaction seq# */
  	wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
  	sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token);
  
  	return buf;
  }
  
  
  static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
  {
  	struct wpabuf *buf;
  
  	buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
  	if (buf == NULL)
  		return NULL;
  
  	wpabuf_put_le16(buf, 2); /* Transaction seq# */
  	wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
  	sae_write_confirm(&wpa_s->sme.sae, buf);
  
  	return buf;
  }
  
  #endif /* CONFIG_SAE */
  
  
  /**
   * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
   * @wpa_s: Pointer to wpa_supplicant data
   * @bss: Pointer to the bss which is the target of authentication attempt
   */
  static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
  				struct wpa_bss *bss)
  {
  	const u8 rrm_ie_len = 5;
  	u8 *pos;
  	const u8 *rrm_ie;
  
  	wpa_s->rrm.rrm_used = 0;
  
  	wpa_printf(MSG_DEBUG,
  		   "RRM: Determining whether RRM can be used - device support: 0x%x",
  		   wpa_s->drv_rrm_flags);
  
  	rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
  	if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
  		wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
  		return;
  	}
  
  	if (!(wpa_s->drv_rrm_flags &
  	      WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
  	    !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) {
  		wpa_printf(MSG_DEBUG,
  			   "RRM: Insufficient RRM support in driver - do not use RRM");
  		return;
  	}
  
  	if (sizeof(wpa_s->sme.assoc_req_ie) <
  	    wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
  		wpa_printf(MSG_INFO,
  			   "RRM: Unable to use RRM, no room for RRM IE");
  		return;
  	}
  
  	wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
  	pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
  	os_memset(pos, 0, 2 + rrm_ie_len);
  	*pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
  	*pos++ = rrm_ie_len;
  
  	/* Set supported capabilites flags */
  	if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
  		*pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
  
  	wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
  	wpa_s->rrm.rrm_used = 1;
  }
  
  
  static void sme_send_authentication(struct wpa_supplicant *wpa_s,
  				    struct wpa_bss *bss, struct wpa_ssid *ssid,
  				    int start)
  {
  	struct wpa_driver_auth_params params;
  	struct wpa_ssid *old_ssid;
  #ifdef CONFIG_IEEE80211R
  	const u8 *ie;
  #endif /* CONFIG_IEEE80211R */
  #ifdef CONFIG_IEEE80211R
  	const u8 *md = NULL;
  #endif /* CONFIG_IEEE80211R */
  	int i, bssid_changed;
  	struct wpabuf *resp = NULL;
  	u8 ext_capab[18];
  	int ext_capab_len;
  	int skip_auth;
  #ifdef CONFIG_MBO
  	const u8 *mbo;
  #endif /* CONFIG_MBO */
  
  	if (bss == NULL) {
  		wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
  			"the network");
  		wpas_connect_work_done(wpa_s);
  		return;
  	}
  
  	skip_auth = wpa_s->conf->reassoc_same_bss_optim &&
  		wpa_s->reassoc_same_bss;
  	wpa_s->current_bss = bss;
  
  	os_memset(&params, 0, sizeof(params));
  	wpa_s->reassociate = 0;
  
  	params.freq = bss->freq;
  	params.bssid = bss->bssid;
  	params.ssid = bss->ssid;
  	params.ssid_len = bss->ssid_len;
  	params.p2p = ssid->p2p_group;
  
  	if (wpa_s->sme.ssid_len != params.ssid_len ||
  	    os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
  		wpa_s->sme.prev_bssid_set = 0;
  
  	wpa_s->sme.freq = params.freq;
  	os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
  	wpa_s->sme.ssid_len = params.ssid_len;
  
  	params.auth_alg = WPA_AUTH_ALG_OPEN;
  #ifdef IEEE8021X_EAPOL
  	if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
  		if (ssid->leap) {
  			if (ssid->non_leap == 0)
  				params.auth_alg = WPA_AUTH_ALG_LEAP;
  			else
  				params.auth_alg |= WPA_AUTH_ALG_LEAP;
  		}
  	}
  #endif /* IEEE8021X_EAPOL */
  	wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
  		params.auth_alg);
  	if (ssid->auth_alg) {
  		params.auth_alg = ssid->auth_alg;
  		wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
  			"0x%x", params.auth_alg);
  	}
  #ifdef CONFIG_SAE
  	wpa_s->sme.sae_pmksa_caching = 0;
  	if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
  		const u8 *rsn;
  		struct wpa_ie_data ied;
  
  		rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
  		if (!rsn) {
  			wpa_dbg(wpa_s, MSG_DEBUG,
  				"SAE enabled, but target BSS does not advertise RSN");
  		} else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
  			   wpa_key_mgmt_sae(ied.key_mgmt)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
  			params.auth_alg = WPA_AUTH_ALG_SAE;
  		} else {
  			wpa_dbg(wpa_s, MSG_DEBUG,
  				"SAE enabled, but target BSS does not advertise SAE AKM for RSN");
  		}
  	}
  #endif /* CONFIG_SAE */
  
  	for (i = 0; i < NUM_WEP_KEYS; i++) {
  		if (ssid->wep_key_len[i])
  			params.wep_key[i] = ssid->wep_key[i];
  		params.wep_key_len[i] = ssid->wep_key_len[i];
  	}
  	params.wep_tx_keyidx = ssid->wep_tx_keyidx;
  
  	bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
  	os_memset(wpa_s->bssid, 0, ETH_ALEN);
  	os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
  	if (bssid_changed)
  		wpas_notify_bssid_changed(wpa_s);
  
  	if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
  	     wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
  	    wpa_key_mgmt_wpa(ssid->key_mgmt)) {
  		int try_opportunistic;
  		try_opportunistic = (ssid->proactive_key_caching < 0 ?
  				     wpa_s->conf->okc :
  				     ssid->proactive_key_caching) &&
  			(ssid->proto & WPA_PROTO_RSN);
  		if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
  					    wpa_s->current_ssid,
  					    try_opportunistic) == 0)
  			eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
  		wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
  		if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
  					      wpa_s->sme.assoc_req_ie,
  					      &wpa_s->sme.assoc_req_ie_len)) {
  			wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
  				"key management and encryption suites");
  			wpas_connect_work_done(wpa_s);
  			return;
  		}
  	} else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
  		   wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
  		/*
  		 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
  		 * use non-WPA since the scan results did not indicate that the
  		 * AP is using WPA or WPA2.
  		 */
  		wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  		wpa_s->sme.assoc_req_ie_len = 0;
  	} else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
  		wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
  		if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
  					      wpa_s->sme.assoc_req_ie,
  					      &wpa_s->sme.assoc_req_ie_len)) {
  			wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
  				"key management and encryption suites (no "
  				"scan results)");
  			wpas_connect_work_done(wpa_s);
  			return;
  		}
  #ifdef CONFIG_WPS
  	} else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
  		struct wpabuf *wps_ie;
  		wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
  		if (wps_ie && wpabuf_len(wps_ie) <=
  		    sizeof(wpa_s->sme.assoc_req_ie)) {
  			wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
  			os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
  				  wpa_s->sme.assoc_req_ie_len);
  		} else
  			wpa_s->sme.assoc_req_ie_len = 0;
  		wpabuf_free(wps_ie);
  		wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  #endif /* CONFIG_WPS */
  	} else {
  		wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  		wpa_s->sme.assoc_req_ie_len = 0;
  	}
  
  #ifdef CONFIG_IEEE80211R
  	ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
  	if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
  		md = ie + 2;
  	wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
  	if (md) {
  		/* Prepare for the next transition */
  		wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
  	}
  
  	if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
  		if (wpa_s->sme.assoc_req_ie_len + 5 <
  		    sizeof(wpa_s->sme.assoc_req_ie)) {
  			struct rsn_mdie *mdie;
  			u8 *pos = wpa_s->sme.assoc_req_ie +
  				wpa_s->sme.assoc_req_ie_len;
  			*pos++ = WLAN_EID_MOBILITY_DOMAIN;
  			*pos++ = sizeof(*mdie);
  			mdie = (struct rsn_mdie *) pos;
  			os_memcpy(mdie->mobility_domain, md,
  				  MOBILITY_DOMAIN_ID_LEN);
  			mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
  			wpa_s->sme.assoc_req_ie_len += 5;
  		}
  
  		if (wpa_s->sme.ft_used &&
  		    os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
  		    wpa_sm_has_ptk(wpa_s->wpa)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
  				"over-the-air");
  			params.auth_alg = WPA_AUTH_ALG_FT;
  			params.ie = wpa_s->sme.ft_ies;
  			params.ie_len = wpa_s->sme.ft_ies_len;
  		}
  	}
  #endif /* CONFIG_IEEE80211R */
  
  #ifdef CONFIG_IEEE80211W
  	wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
  	if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
  		const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
  		struct wpa_ie_data _ie;
  		if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
  		    _ie.capabilities &
  		    (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
  				"MFP: require MFP");
  			wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
  		}
  	}
  #endif /* CONFIG_IEEE80211W */
  
  #ifdef CONFIG_P2P
  	if (wpa_s->global->p2p) {
  		u8 *pos;
  		size_t len;
  		int res;
  		pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
  		len = sizeof(wpa_s->sme.assoc_req_ie) -
  			wpa_s->sme.assoc_req_ie_len;
  		res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
  					    ssid->p2p_group);
  		if (res >= 0)
  			wpa_s->sme.assoc_req_ie_len += res;
  	}
  #endif /* CONFIG_P2P */
  
  #ifdef CONFIG_FST
  	if (wpa_s->fst_ies) {
  		int fst_ies_len = wpabuf_len(wpa_s->fst_ies);
  
  		if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <=
  		    sizeof(wpa_s->sme.assoc_req_ie)) {
  			os_memcpy(wpa_s->sme.assoc_req_ie +
  				  wpa_s->sme.assoc_req_ie_len,
  				  wpabuf_head(wpa_s->fst_ies),
  				  fst_ies_len);
  			wpa_s->sme.assoc_req_ie_len += fst_ies_len;
  		}
  	}
  #endif /* CONFIG_FST */
  
  	sme_auth_handle_rrm(wpa_s, bss);
  
  #ifdef CONFIG_MBO
  	mbo = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE);
  	if (mbo) {
  		int len;
  
  		len = wpas_mbo_supp_op_class_ie(
  			wpa_s, bss->freq,
  			wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
  			sizeof(wpa_s->sme.assoc_req_ie) -
  			wpa_s->sme.assoc_req_ie_len);
  		if (len > 0)
  			wpa_s->sme.assoc_req_ie_len += len;
  	}
  #endif /* CONFIG_MBO */
  
  	ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
  					     sizeof(ext_capab));
  	if (ext_capab_len > 0) {
  		u8 *pos = wpa_s->sme.assoc_req_ie;
  		if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
  			pos += 2 + pos[1];
  		os_memmove(pos + ext_capab_len, pos,
  			   wpa_s->sme.assoc_req_ie_len -
  			   (pos - wpa_s->sme.assoc_req_ie));
  		wpa_s->sme.assoc_req_ie_len += ext_capab_len;
  		os_memcpy(pos, ext_capab, ext_capab_len);
  	}
  
  #ifdef CONFIG_HS20
  	if (is_hs20_network(wpa_s, ssid, bss)) {
  		struct wpabuf *hs20;
  
  		hs20 = wpabuf_alloc(20);
  		if (hs20) {
  			int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
  			size_t len;
  
  			wpas_hs20_add_indication(hs20, pps_mo_id);
  			len = sizeof(wpa_s->sme.assoc_req_ie) -
  				wpa_s->sme.assoc_req_ie_len;
  			if (wpabuf_len(hs20) <= len) {
  				os_memcpy(wpa_s->sme.assoc_req_ie +
  					  wpa_s->sme.assoc_req_ie_len,
  					  wpabuf_head(hs20), wpabuf_len(hs20));
  				wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
  			}
  			wpabuf_free(hs20);
  		}
  	}
  #endif /* CONFIG_HS20 */
  
  	if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
  		struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
  		size_t len;
  
  		len = sizeof(wpa_s->sme.assoc_req_ie) -
  			wpa_s->sme.assoc_req_ie_len;
  		if (wpabuf_len(buf) <= len) {
  			os_memcpy(wpa_s->sme.assoc_req_ie +
  				  wpa_s->sme.assoc_req_ie_len,
  				  wpabuf_head(buf), wpabuf_len(buf));
  			wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
  		}
  	}
  
  #ifdef CONFIG_MBO
  	if (mbo) {
  		int len;
  
  		len = wpas_mbo_ie(wpa_s, wpa_s->sme.assoc_req_ie +
  				  wpa_s->sme.assoc_req_ie_len,
  				  sizeof(wpa_s->sme.assoc_req_ie) -
  				  wpa_s->sme.assoc_req_ie_len);
  		if (len >= 0)
  			wpa_s->sme.assoc_req_ie_len += len;
  	}
  #endif /* CONFIG_MBO */
  
  #ifdef CONFIG_SAE
  	if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
  	    pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0)
  	{
  		wpa_dbg(wpa_s, MSG_DEBUG,
  			"PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
  		params.auth_alg = WPA_AUTH_ALG_OPEN;
  		wpa_s->sme.sae_pmksa_caching = 1;
  	}
  
  	if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
  		if (start)
  			resp = sme_auth_build_sae_commit(wpa_s, ssid,
  							 bss->bssid);
  		else
  			resp = sme_auth_build_sae_confirm(wpa_s);
  		if (resp == NULL) {
  			wpas_connection_failed(wpa_s, bss->bssid);
  			return;
  		}
  		params.sae_data = wpabuf_head(resp);
  		params.sae_data_len = wpabuf_len(resp);
  		wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
  	}
  #endif /* CONFIG_SAE */
  
  	wpa_supplicant_cancel_sched_scan(wpa_s);
  	wpa_supplicant_cancel_scan(wpa_s);
  
  	wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
  		" (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
  		wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
  
  	wpa_clear_keys(wpa_s, bss->bssid);
  	wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
  	old_ssid = wpa_s->current_ssid;
  	wpa_s->current_ssid = ssid;
  	wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
  	wpa_supplicant_initiate_eapol(wpa_s);
  	if (old_ssid != wpa_s->current_ssid)
  		wpas_notify_network_changed(wpa_s);
  
  #ifdef CONFIG_HS20
  	hs20_configure_frame_filters(wpa_s);
  #endif /* CONFIG_HS20 */
  
  #ifdef CONFIG_P2P
  	/*
  	 * If multi-channel concurrency is not supported, check for any
  	 * frequency conflict. In case of any frequency conflict, remove the
  	 * least prioritized connection.
  	 */
  	if (wpa_s->num_multichan_concurrent < 2) {
  		int freq, num;
  		num = get_shared_radio_freqs(wpa_s, &freq, 1);
  		if (num > 0 && freq > 0 && freq != params.freq) {
  			wpa_printf(MSG_DEBUG,
  				   "Conflicting frequency found (%d != %d)",
  				   freq, params.freq);
  			if (wpas_p2p_handle_frequency_conflicts(wpa_s,
  								params.freq,
  								ssid) < 0) {
  				wpas_connection_failed(wpa_s, bss->bssid);
  				wpa_supplicant_mark_disassoc(wpa_s);
  				wpabuf_free(resp);
  				wpas_connect_work_done(wpa_s);
  				return;
  			}
  		}
  	}
  #endif /* CONFIG_P2P */
  
  	if (skip_auth) {
  		wpa_msg(wpa_s, MSG_DEBUG,
  			"SME: Skip authentication step on reassoc-to-same-BSS");
  		wpabuf_free(resp);
  		sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
  		return;
  	}
  
  
  	wpa_s->sme.auth_alg = params.auth_alg;
  	if (wpa_drv_authenticate(wpa_s, &params) < 0) {
  		wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
  			"driver failed");
  		wpas_connection_failed(wpa_s, bss->bssid);
  		wpa_supplicant_mark_disassoc(wpa_s);
  		wpabuf_free(resp);
  		wpas_connect_work_done(wpa_s);
  		return;
  	}
  
  	eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
  			       NULL);
  
  	/*
  	 * Association will be started based on the authentication event from
  	 * the driver.
  	 */
  
  	wpabuf_free(resp);
  }
  
  
  static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
  {
  	struct wpa_connect_work *cwork = work->ctx;
  	struct wpa_supplicant *wpa_s = work->wpa_s;
  
  	if (deinit) {
  		if (work->started)
  			wpa_s->connect_work = NULL;
  
  		wpas_connect_work_free(cwork);
  		return;
  	}
  
  	wpa_s->connect_work = work;
  
  	if (cwork->bss_removed ||
  	    !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) ||
  	    wpas_network_disabled(wpa_s, cwork->ssid)) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
  		wpas_connect_work_done(wpa_s);
  		return;
  	}
  
  	sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
  }
  
  
  void sme_authenticate(struct wpa_supplicant *wpa_s,
  		      struct wpa_bss *bss, struct wpa_ssid *ssid)
  {
  	struct wpa_connect_work *cwork;
  
  	if (bss == NULL || ssid == NULL)
  		return;
  	if (wpa_s->connect_work) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
  		return;
  	}
  
  	if (radio_work_pending(wpa_s, "sme-connect")) {
  		/*
  		 * The previous sme-connect work might no longer be valid due to
  		 * the fact that the BSS list was updated. In addition, it makes
  		 * sense to adhere to the 'newer' decision.
  		 */
  		wpa_dbg(wpa_s, MSG_DEBUG,
  			"SME: Remove previous pending sme-connect");
  		radio_remove_works(wpa_s, "sme-connect", 0);
  	}
  
  	wpas_abort_ongoing_scan(wpa_s);
  
  	cwork = os_zalloc(sizeof(*cwork));
  	if (cwork == NULL)
  		return;
  	cwork->bss = bss;
  	cwork->ssid = ssid;
  	cwork->sme = 1;
  
  #ifdef CONFIG_SAE
  	wpa_s->sme.sae.state = SAE_NOTHING;
  	wpa_s->sme.sae.send_confirm = 0;
  	wpa_s->sme.sae_group_index = 0;
  #endif /* CONFIG_SAE */
  
  	if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
  			   sme_auth_start_cb, cwork) < 0)
  		wpas_connect_work_free(cwork);
  }
  
  
  #ifdef CONFIG_SAE
  
  static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
  			u16 status_code, const u8 *data, size_t len)
  {
  	int *groups;
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
  		"status code %u", auth_transaction, status_code);
  
  	if (auth_transaction == 1 &&
  	    status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
  	    wpa_s->sme.sae.state == SAE_COMMITTED &&
  	    wpa_s->current_bss && wpa_s->current_ssid) {
  		int default_groups[] = { 19, 20, 21, 25, 26, 0 };
  		u16 group;
  
  		groups = wpa_s->conf->sae_groups;
  		if (!groups || groups[0] <= 0)
  			groups = default_groups;
  
  		if (len < sizeof(le16)) {
  			wpa_dbg(wpa_s, MSG_DEBUG,
  				"SME: Too short SAE anti-clogging token request");
  			return -1;
  		}
  		group = WPA_GET_LE16(data);
  		wpa_dbg(wpa_s, MSG_DEBUG,
  			"SME: SAE anti-clogging token requested (group %u)",
  			group);
  		if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
  		    WLAN_STATUS_SUCCESS) {
  			wpa_dbg(wpa_s, MSG_ERROR,
  				"SME: SAE group %u of anti-clogging request is invalid",
  				group);
  			return -1;
  		}
  		wpabuf_free(wpa_s->sme.sae_token);
  		wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
  							 len - sizeof(le16));
  		sme_send_authentication(wpa_s, wpa_s->current_bss,
  					wpa_s->current_ssid, 1);
  		return 0;
  	}
  
  	if (auth_transaction == 1 &&
  	    status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
  	    wpa_s->sme.sae.state == SAE_COMMITTED &&
  	    wpa_s->current_bss && wpa_s->current_ssid) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
  		wpa_s->sme.sae_group_index++;
  		if (sme_set_sae_group(wpa_s) < 0)
  			return -1; /* no other groups enabled */
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
  		sme_send_authentication(wpa_s, wpa_s->current_bss,
  					wpa_s->current_ssid, 1);
  		return 0;
  	}
  
  	if (status_code != WLAN_STATUS_SUCCESS)
  		return -1;
  
  	if (auth_transaction == 1) {
  		u16 res;
  
  		groups = wpa_s->conf->sae_groups;
  
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
  		if (wpa_s->current_bss == NULL ||
  		    wpa_s->current_ssid == NULL)
  			return -1;
  		if (wpa_s->sme.sae.state != SAE_COMMITTED)
  			return -1;
  		if (groups && groups[0] <= 0)
  			groups = NULL;
  		res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
  				       groups);
  		if (res == SAE_SILENTLY_DISCARD) {
  			wpa_printf(MSG_DEBUG,
  				   "SAE: Drop commit message due to reflection attack");
  			return 0;
  		}
  		if (res != WLAN_STATUS_SUCCESS)
  			return -1;
  
  		if (sae_process_commit(&wpa_s->sme.sae) < 0) {
  			wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
  				   "commit");
  			return -1;
  		}
  
  		wpabuf_free(wpa_s->sme.sae_token);
  		wpa_s->sme.sae_token = NULL;
  		sme_send_authentication(wpa_s, wpa_s->current_bss,
  					wpa_s->current_ssid, 0);
  		return 0;
  	} else if (auth_transaction == 2) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
  		if (wpa_s->sme.sae.state != SAE_CONFIRMED)
  			return -1;
  		if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
  			return -1;
  		wpa_s->sme.sae.state = SAE_ACCEPTED;
  		sae_clear_temp_data(&wpa_s->sme.sae);
  		return 1;
  	}
  
  	return -1;
  }
  #endif /* CONFIG_SAE */
  
  
  void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
  {
  	struct wpa_ssid *ssid = wpa_s->current_ssid;
  
  	if (ssid == NULL) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
  			"when network is not selected");
  		return;
  	}
  
  	if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
  			"when not in authenticating state");
  		return;
  	}
  
  	if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
  			"unexpected peer " MACSTR,
  			MAC2STR(data->auth.peer));
  		return;
  	}
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
  		" auth_type=%d auth_transaction=%d status_code=%d",
  		MAC2STR(data->auth.peer), data->auth.auth_type,
  		data->auth.auth_transaction, data->auth.status_code);
  	wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
  		    data->auth.ies, data->auth.ies_len);
  
  	eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
  
  #ifdef CONFIG_SAE
  	if (data->auth.auth_type == WLAN_AUTH_SAE) {
  		int res;
  		res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
  				   data->auth.status_code, data->auth.ies,
  				   data->auth.ies_len);
  		if (res < 0) {
  			wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
  			wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
  
  		}
  		if (res != 1)
  			return;
  
  		wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
  			   "4-way handshake");
  		wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
  			       wpa_s->sme.sae.pmkid, wpa_s->pending_bssid);
  	}
  #endif /* CONFIG_SAE */
  
  	if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
  		char *ie_txt = NULL;
  
  		if (data->auth.ies && data->auth.ies_len) {
  			size_t buflen = 2 * data->auth.ies_len + 1;
  			ie_txt = os_malloc(buflen);
  			if (ie_txt) {
  				wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
  						 data->auth.ies_len);
  			}
  		}
  		wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
  			" auth_type=%u auth_transaction=%u status_code=%u ie=%s",
  			MAC2STR(data->auth.peer), data->auth.auth_type,
  			data->auth.auth_transaction, data->auth.status_code,
  			ie_txt);
  		os_free(ie_txt);
  
  		if (data->auth.status_code !=
  		    WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
  		    wpa_s->sme.auth_alg == data->auth.auth_type ||
  		    wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
  			wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
  			wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
  			return;
  		}
  
  		wpas_connect_work_done(wpa_s);
  
  		switch (data->auth.auth_type) {
  		case WLAN_AUTH_OPEN:
  			wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
  
  			wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
  			wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
  						 wpa_s->current_ssid);
  			return;
  
  		case WLAN_AUTH_SHARED_KEY:
  			wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
  
  			wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
  			wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
  						 wpa_s->current_ssid);
  			return;
  
  		default:
  			return;
  		}
  	}
  
  #ifdef CONFIG_IEEE80211R
  	if (data->auth.auth_type == WLAN_AUTH_FT) {
  		if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
  					    data->auth.ies_len, 0,
  					    data->auth.peer, NULL, 0) < 0) {
  			wpa_dbg(wpa_s, MSG_DEBUG,
  				"SME: FT Authentication response processing failed");
  			wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
  				MACSTR
  				" reason=%d locally_generated=1",
  				MAC2STR(wpa_s->pending_bssid),
  				WLAN_REASON_DEAUTH_LEAVING);
  			wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
  			wpa_supplicant_mark_disassoc(wpa_s);
  			return;
  		}
  	}
  #endif /* CONFIG_IEEE80211R */
  
  	sme_associate(wpa_s, ssid->mode, data->auth.peer,
  		      data->auth.auth_type);
  }
  
  
  void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
  		   const u8 *bssid, u16 auth_type)
  {
  	struct wpa_driver_associate_params params;
  	struct ieee802_11_elems elems;
  #ifdef CONFIG_HT_OVERRIDES
  	struct ieee80211_ht_capabilities htcaps;
  	struct ieee80211_ht_capabilities htcaps_mask;
  #endif /* CONFIG_HT_OVERRIDES */
  #ifdef CONFIG_VHT_OVERRIDES
  	struct ieee80211_vht_capabilities vhtcaps;
  	struct ieee80211_vht_capabilities vhtcaps_mask;
  #endif /* CONFIG_VHT_OVERRIDES */
  
  	os_memset(&params, 0, sizeof(params));
  	params.bssid = bssid;
  	params.ssid = wpa_s->sme.ssid;
  	params.ssid_len = wpa_s->sme.ssid_len;
  	params.freq.freq = wpa_s->sme.freq;
  	params.bg_scan_period = wpa_s->current_ssid ?
  		wpa_s->current_ssid->bg_scan_period : -1;
  	params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
  		wpa_s->sme.assoc_req_ie : NULL;
  	params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
  	params.pairwise_suite = wpa_s->pairwise_cipher;
  	params.group_suite = wpa_s->group_cipher;
  	params.key_mgmt_suite = wpa_s->key_mgmt;
  	params.wpa_proto = wpa_s->wpa_proto;
  #ifdef CONFIG_HT_OVERRIDES
  	os_memset(&htcaps, 0, sizeof(htcaps));
  	os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
  	params.htcaps = (u8 *) &htcaps;
  	params.htcaps_mask = (u8 *) &htcaps_mask;
  	wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
  #endif /* CONFIG_HT_OVERRIDES */
  #ifdef CONFIG_VHT_OVERRIDES
  	os_memset(&vhtcaps, 0, sizeof(vhtcaps));
  	os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
  	params.vhtcaps = &vhtcaps;
  	params.vhtcaps_mask = &vhtcaps_mask;
  	wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
  #endif /* CONFIG_VHT_OVERRIDES */
  #ifdef CONFIG_IEEE80211R
  	if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
  		params.wpa_ie = wpa_s->sme.ft_ies;
  		params.wpa_ie_len = wpa_s->sme.ft_ies_len;
  	}
  #endif /* CONFIG_IEEE80211R */
  	params.mode = mode;
  	params.mgmt_frame_protection = wpa_s->sme.mfp;
  	params.rrm_used = wpa_s->rrm.rrm_used;
  	if (wpa_s->sme.prev_bssid_set)
  		params.prev_bssid = wpa_s->sme.prev_bssid;
  
  	wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
  		" (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
  		params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
  		params.freq.freq);
  
  	wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
  
  	if (params.wpa_ie == NULL ||
  	    ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
  	    < 0) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
  		os_memset(&elems, 0, sizeof(elems));
  	}
  	if (elems.rsn_ie) {
  		params.wpa_proto = WPA_PROTO_RSN;
  		wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
  					elems.rsn_ie_len + 2);
  	} else if (elems.wpa_ie) {
  		params.wpa_proto = WPA_PROTO_WPA;
  		wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
  					elems.wpa_ie_len + 2);
  	} else if (elems.osen) {
  		params.wpa_proto = WPA_PROTO_OSEN;
  		wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
  					elems.osen_len + 2);
  	} else
  		wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
  	if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
  		params.p2p = 1;
  
  	if (wpa_s->p2pdev->set_sta_uapsd)
  		params.uapsd = wpa_s->p2pdev->sta_uapsd;
  	else
  		params.uapsd = -1;
  
  	if (wpa_drv_associate(wpa_s, &params) < 0) {
  		wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
  			"driver failed");
  		wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
  		wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
  		os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
  		return;
  	}
  
  	eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
  			       NULL);
  }
  
  
  int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
  		      const u8 *ies, size_t ies_len)
  {
  	if (md == NULL || ies == NULL) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
  		os_free(wpa_s->sme.ft_ies);
  		wpa_s->sme.ft_ies = NULL;
  		wpa_s->sme.ft_ies_len = 0;
  		wpa_s->sme.ft_used = 0;
  		return 0;
  	}
  
  	os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
  	wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
  	os_free(wpa_s->sme.ft_ies);
  	wpa_s->sme.ft_ies = os_malloc(ies_len);
  	if (wpa_s->sme.ft_ies == NULL)
  		return -1;
  	os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
  	wpa_s->sme.ft_ies_len = ies_len;
  	return 0;
  }
  
  
  static void sme_deauth(struct wpa_supplicant *wpa_s)
  {
  	int bssid_changed;
  
  	bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
  
  	if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
  				   WLAN_REASON_DEAUTH_LEAVING) < 0) {
  		wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
  			"failed");
  	}
  	wpa_s->sme.prev_bssid_set = 0;
  
  	wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
  	wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
  	os_memset(wpa_s->bssid, 0, ETH_ALEN);
  	os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
  	if (bssid_changed)
  		wpas_notify_bssid_changed(wpa_s);
  }
  
  
  void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
  			    union wpa_event_data *data)
  {
  	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
  		"status code %d", MAC2STR(wpa_s->pending_bssid),
  		data->assoc_reject.status_code);
  
  	eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
  
  #ifdef CONFIG_SAE
  	if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
  	    wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
  		wpa_dbg(wpa_s, MSG_DEBUG,
  			"PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
  		wpa_sm_aborted_cached(wpa_s->wpa);
  		wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
  		if (wpa_s->current_bss) {
  			struct wpa_bss *bss = wpa_s->current_bss;
  			struct wpa_ssid *ssid = wpa_s->current_ssid;
  
  			wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
  					       WLAN_REASON_DEAUTH_LEAVING);
  			wpas_connect_work_done(wpa_s);
  			wpa_supplicant_mark_disassoc(wpa_s);
  			wpa_supplicant_connect(wpa_s, bss, ssid);
  			return;
  		}
  	}
  #endif /* CONFIG_SAE */
  
  	/*
  	 * For now, unconditionally terminate the previous authentication. In
  	 * theory, this should not be needed, but mac80211 gets quite confused
  	 * if the authentication is left pending.. Some roaming cases might
  	 * benefit from using the previous authentication, so this could be
  	 * optimized in the future.
  	 */
  	sme_deauth(wpa_s);
  }
  
  
  void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
  			      union wpa_event_data *data)
  {
  	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
  	wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
  	wpa_supplicant_mark_disassoc(wpa_s);
  }
  
  
  void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
  			       union wpa_event_data *data)
  {
  	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
  	wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
  	wpa_supplicant_mark_disassoc(wpa_s);
  }
  
  
  void sme_event_disassoc(struct wpa_supplicant *wpa_s,
  			struct disassoc_info *info)
  {
  	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
  	if (wpa_s->sme.prev_bssid_set) {
  		/*
  		 * cfg80211/mac80211 can get into somewhat confused state if
  		 * the AP only disassociates us and leaves us in authenticated
  		 * state. For now, force the state to be cleared to avoid
  		 * confusing errors if we try to associate with the AP again.
  		 */
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
  			"driver state");
  		wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
  				       WLAN_REASON_DEAUTH_LEAVING);
  	}
  }
  
  
  static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  	if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
  		wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
  		sme_deauth(wpa_s);
  	}
  }
  
  
  static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  	if (wpa_s->wpa_state == WPA_ASSOCIATING) {
  		wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
  		sme_deauth(wpa_s);
  	}
  }
  
  
  void sme_state_changed(struct wpa_supplicant *wpa_s)
  {
  	/* Make sure timers are cleaned up appropriately. */
  	if (wpa_s->wpa_state != WPA_ASSOCIATING)
  		eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
  	if (wpa_s->wpa_state != WPA_AUTHENTICATING)
  		eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
  }
  
  
  void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
  				       const u8 *prev_pending_bssid)
  {
  	/*
  	 * mac80211-workaround to force deauth on failed auth cmd,
  	 * requires us to remain in authenticating state to allow the
  	 * second authentication attempt to be continued properly.
  	 */
  	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
  		"to proceed after disconnection event");
  	wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
  	os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
  
  	/*
  	 * Re-arm authentication timer in case auth fails for whatever reason.
  	 */
  	eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
  	eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
  			       NULL);
  }
  
  
  void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
  {
  	wpa_s->sme.prev_bssid_set = 0;
  #ifdef CONFIG_SAE
  	wpabuf_free(wpa_s->sme.sae_token);
  	wpa_s->sme.sae_token = NULL;
  	sae_clear_data(&wpa_s->sme.sae);
  #endif /* CONFIG_SAE */
  #ifdef CONFIG_IEEE80211R
  	if (wpa_s->sme.ft_ies)
  		sme_update_ft_ies(wpa_s, NULL, NULL, 0);
  #endif /* CONFIG_IEEE80211R */
  }
  
  
  void sme_deinit(struct wpa_supplicant *wpa_s)
  {
  	os_free(wpa_s->sme.ft_ies);
  	wpa_s->sme.ft_ies = NULL;
  	wpa_s->sme.ft_ies_len = 0;
  #ifdef CONFIG_IEEE80211W
  	sme_stop_sa_query(wpa_s);
  #endif /* CONFIG_IEEE80211W */
  	sme_clear_on_disassoc(wpa_s);
  
  	eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
  	eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
  	eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
  }
  
  
  static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
  				   const u8 *chan_list, u8 num_channels,
  				   u8 num_intol)
  {
  	struct ieee80211_2040_bss_coex_ie *bc_ie;
  	struct ieee80211_2040_intol_chan_report *ic_report;
  	struct wpabuf *buf;
  
  	wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
  		   " (num_channels=%u num_intol=%u)",
  		   MAC2STR(wpa_s->bssid), num_channels, num_intol);
  	wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
  		    chan_list, num_channels);
  
  	buf = wpabuf_alloc(2 + /* action.category + action_code */
  			   sizeof(struct ieee80211_2040_bss_coex_ie) +
  			   sizeof(struct ieee80211_2040_intol_chan_report) +
  			   num_channels);
  	if (buf == NULL)
  		return;
  
  	wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
  	wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
  
  	bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
  	bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
  	bc_ie->length = 1;
  	if (num_intol)
  		bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
  
  	if (num_channels > 0) {
  		ic_report = wpabuf_put(buf, sizeof(*ic_report));
  		ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
  		ic_report->length = num_channels + 1;
  		ic_report->op_class = 0;
  		os_memcpy(wpabuf_put(buf, num_channels), chan_list,
  			  num_channels);
  	}
  
  	if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
  				wpa_s->own_addr, wpa_s->bssid,
  				wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
  		wpa_msg(wpa_s, MSG_INFO,
  			"SME: Failed to send 20/40 BSS Coexistence frame");
  	}
  
  	wpabuf_free(buf);
  }
  
  
  int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
  {
  	struct wpa_bss *bss;
  	const u8 *ie;
  	u16 ht_cap;
  	u8 chan_list[P2P_MAX_CHANNELS], channel;
  	u8 num_channels = 0, num_intol = 0, i;
  
  	if (!wpa_s->sme.sched_obss_scan)
  		return 0;
  
  	wpa_s->sme.sched_obss_scan = 0;
  	if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
  		return 1;
  
  	/*
  	 * Check whether AP uses regulatory triplet or channel triplet in
  	 * country info. Right now the operating class of the BSS channel
  	 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
  	 * based on the assumption that operating class triplet is not used in
  	 * beacon frame. If the First Channel Number/Operating Extension
  	 * Identifier octet has a positive integer value of 201 or greater,
  	 * then its operating class triplet.
  	 *
  	 * TODO: If Supported Operating Classes element is present in beacon
  	 * frame, have to lookup operating class in Annex E and fill them in
  	 * 2040 coex frame.
  	 */
  	ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
  	if (ie && (ie[1] >= 6) && (ie[5] >= 201))
  		return 1;
  
  	os_memset(chan_list, 0, sizeof(chan_list));
  
  	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
  		/* Skip other band bss */
  		enum hostapd_hw_mode mode;
  		mode = ieee80211_freq_to_chan(bss->freq, &channel);
  		if (mode != HOSTAPD_MODE_IEEE80211G &&
  		    mode != HOSTAPD_MODE_IEEE80211B)
  			continue;
  
  		ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
  		ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
  		wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
  			   " freq=%u chan=%u ht_cap=0x%x",
  			   MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
  
  		if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
  			if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
  				num_intol++;
  
  			/* Check whether the channel is already considered */
  			for (i = 0; i < num_channels; i++) {
  				if (channel == chan_list[i])
  					break;
  			}
  			if (i != num_channels)
  				continue;
  
  			chan_list[num_channels++] = channel;
  		}
  	}
  
  	sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
  	return 1;
  }
  
  
  static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
  				     struct wpa_driver_scan_params *params)
  {
  	/* Include only affected channels */
  	struct hostapd_hw_modes *mode;
  	int count, i;
  	int start, end;
  
  	mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
  			HOSTAPD_MODE_IEEE80211G);
  	if (mode == NULL) {
  		/* No channels supported in this band - use empty list */
  		params->freqs = os_zalloc(sizeof(int));
  		return;
  	}
  
  	if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
  	    wpa_s->current_bss) {
  		const u8 *ie;
  
  		ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
  		if (ie && ie[1] >= 2) {
  			u8 o;
  
  			o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
  			if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
  				wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
  			else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
  				wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
  		}
  	}
  
  	start = wpa_s->assoc_freq - 10;
  	end = wpa_s->assoc_freq + 10;
  	switch (wpa_s->sme.ht_sec_chan) {
  	case HT_SEC_CHAN_UNKNOWN:
  		/* HT40+ possible on channels 1..9 */
  		if (wpa_s->assoc_freq <= 2452)
  			start -= 20;
  		/* HT40- possible on channels 5-13 */
  		if (wpa_s->assoc_freq >= 2432)
  			end += 20;
  		break;
  	case HT_SEC_CHAN_ABOVE:
  		end += 20;
  		break;
  	case HT_SEC_CHAN_BELOW:
  		start -= 20;
  		break;
  	}
  	wpa_printf(MSG_DEBUG,
  		   "OBSS: assoc_freq %d possible affected range %d-%d",
  		   wpa_s->assoc_freq, start, end);
  
  	params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
  	if (params->freqs == NULL)
  		return;
  	for (count = 0, i = 0; i < mode->num_channels; i++) {
  		int freq;
  
  		if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
  			continue;
  		freq = mode->channels[i].freq;
  		if (freq - 10 >= end || freq + 10 <= start)
  			continue; /* not affected */
  		params->freqs[count++] = freq;
  	}
  }
  
  
  static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  	struct wpa_driver_scan_params params;
  
  	if (!wpa_s->current_bss) {
  		wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
  		return;
  	}
  
  	os_memset(&params, 0, sizeof(params));
  	wpa_obss_scan_freqs_list(wpa_s, &params);
  	params.low_priority = 1;
  	wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
  
  	if (wpa_supplicant_trigger_scan(wpa_s, &params))
  		wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
  	else
  		wpa_s->sme.sched_obss_scan = 1;
  	os_free(params.freqs);
  
  	eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
  			       sme_obss_scan_timeout, wpa_s, NULL);
  }
  
  
  void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
  {
  	const u8 *ie;
  	struct wpa_bss *bss = wpa_s->current_bss;
  	struct wpa_ssid *ssid = wpa_s->current_ssid;
  	struct hostapd_hw_modes *hw_mode = NULL;
  	int i;
  
  	eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
  	wpa_s->sme.sched_obss_scan = 0;
  	wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
  	if (!enable)
  		return;
  
  	/*
  	 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
  	 * or it expects OBSS scan to be performed by wpa_supplicant.
  	 */
  	if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
  	      (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
  	    ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
  		return;
  
  	if (!wpa_s->hw.modes)
  		return;
  
  	/* only HT caps in 11g mode are relevant */
  	for (i = 0; i < wpa_s->hw.num_modes; i++) {
  		hw_mode = &wpa_s->hw.modes[i];
  		if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
  			break;
  	}
  
  	/* Driver does not support HT40 for 11g or doesn't have 11g. */
  	if (i == wpa_s->hw.num_modes || !hw_mode ||
  	    !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
  		return;
  
  	if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
  		return; /* Not associated on 2.4 GHz band */
  
  	/* Check whether AP supports HT40 */
  	ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
  	if (!ie || ie[1] < 2 ||
  	    !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
  		return; /* AP does not support HT40 */
  
  	ie = wpa_bss_get_ie(wpa_s->current_bss,
  			    WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
  	if (!ie || ie[1] < 14)
  		return; /* AP does not request OBSS scans */
  
  	wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
  	if (wpa_s->sme.obss_scan_int < 10) {
  		wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
  			   "replaced with the minimum 10 sec",
  			   wpa_s->sme.obss_scan_int);
  		wpa_s->sme.obss_scan_int = 10;
  	}
  	wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
  		   wpa_s->sme.obss_scan_int);
  	eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
  			       sme_obss_scan_timeout, wpa_s, NULL);
  }
  
  
  #ifdef CONFIG_IEEE80211W
  
  static const unsigned int sa_query_max_timeout = 1000;
  static const unsigned int sa_query_retry_timeout = 201;
  
  static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
  {
  	u32 tu;
  	struct os_reltime now, passed;
  	os_get_reltime(&now);
  	os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
  	tu = (passed.sec * 1000000 + passed.usec) / 1024;
  	if (sa_query_max_timeout < tu) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
  		sme_stop_sa_query(wpa_s);
  		wpa_supplicant_deauthenticate(
  			wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
  		return 1;
  	}
  
  	return 0;
  }
  
  
  static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
  				  const u8 *trans_id)
  {
  	u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
  	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
  		MACSTR, MAC2STR(wpa_s->bssid));
  	wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
  		    trans_id, WLAN_SA_QUERY_TR_ID_LEN);
  	req[0] = WLAN_ACTION_SA_QUERY;
  	req[1] = WLAN_SA_QUERY_REQUEST;
  	os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
  	if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
  				wpa_s->own_addr, wpa_s->bssid,
  				req, sizeof(req), 0) < 0)
  		wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
  			"Request");
  }
  
  
  static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  	unsigned int timeout, sec, usec;
  	u8 *trans_id, *nbuf;
  
  	if (wpa_s->sme.sa_query_count > 0 &&
  	    sme_check_sa_query_timeout(wpa_s))
  		return;
  
  	nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
  				wpa_s->sme.sa_query_count + 1,
  				WLAN_SA_QUERY_TR_ID_LEN);
  	if (nbuf == NULL)
  		return;
  	if (wpa_s->sme.sa_query_count == 0) {
  		/* Starting a new SA Query procedure */
  		os_get_reltime(&wpa_s->sme.sa_query_start);
  	}
  	trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
  	wpa_s->sme.sa_query_trans_id = nbuf;
  	wpa_s->sme.sa_query_count++;
  
  	if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
  		wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
  		return;
  	}
  
  	timeout = sa_query_retry_timeout;
  	sec = ((timeout / 1000) * 1024) / 1000;
  	usec = (timeout % 1000) * 1024;
  	eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
  		wpa_s->sme.sa_query_count);
  
  	sme_send_sa_query_req(wpa_s, trans_id);
  }
  
  
  static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
  {
  	sme_sa_query_timer(wpa_s, NULL);
  }
  
  
  static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
  {
  	eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
  	os_free(wpa_s->sme.sa_query_trans_id);
  	wpa_s->sme.sa_query_trans_id = NULL;
  	wpa_s->sme.sa_query_count = 0;
  }
  
  
  void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
  				 const u8 *da, u16 reason_code)
  {
  	struct wpa_ssid *ssid;
  	struct os_reltime now;
  
  	if (wpa_s->wpa_state != WPA_COMPLETED)
  		return;
  	ssid = wpa_s->current_ssid;
  	if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
  		return;
  	if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
  		return;
  	if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
  	    reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
  		return;
  	if (wpa_s->sme.sa_query_count > 0)
  		return;
  
  	os_get_reltime(&now);
  	if (wpa_s->sme.last_unprot_disconnect.sec &&
  	    !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
  		return; /* limit SA Query procedure frequency */
  	wpa_s->sme.last_unprot_disconnect = now;
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
  		"possible AP/STA state mismatch - trigger SA Query");
  	sme_start_sa_query(wpa_s);
  }
  
  
  void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
  		     const u8 *data, size_t len)
  {
  	int i;
  
  	if (wpa_s->sme.sa_query_trans_id == NULL ||
  	    len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
  	    data[0] != WLAN_SA_QUERY_RESPONSE)
  		return;
  	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
  		MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
  
  	if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
  		return;
  
  	for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
  		if (os_memcmp(wpa_s->sme.sa_query_trans_id +
  			      i * WLAN_SA_QUERY_TR_ID_LEN,
  			      data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
  			break;
  	}
  
  	if (i >= wpa_s->sme.sa_query_count) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
  			"transaction identifier found");
  		return;
  	}
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
  		"from " MACSTR, MAC2STR(sa));
  	sme_stop_sa_query(wpa_s);
  }
  
  #endif /* CONFIG_IEEE80211W */
  