text: /*
   * WPA Supplicant - Driver event processing
   * Copyright (c) 2003-2015, 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 "eapol_supp/eapol_supp_sm.h"
  #include "rsn_supp/wpa.h"
  #include "eloop.h"
  #include "config.h"
  #include "l2_packet/l2_packet.h"
  #include "wpa_supplicant_i.h"
  #include "driver_i.h"
  #include "pcsc_funcs.h"
  #include "rsn_supp/preauth.h"
  #include "rsn_supp/pmksa_cache.h"
  #include "common/wpa_ctrl.h"
  #include "eap_peer/eap.h"
  #include "ap/hostapd.h"
  #include "p2p/p2p.h"
  #include "wnm_sta.h"
  #include "notify.h"
  #include "common/ieee802_11_defs.h"
  #include "common/ieee802_11_common.h"
  #include "crypto/random.h"
  #include "blacklist.h"
  #include "wpas_glue.h"
  #include "wps_supplicant.h"
  #include "ibss_rsn.h"
  #include "sme.h"
  #include "gas_query.h"
  #include "p2p_supplicant.h"
  #include "bgscan.h"
  #include "autoscan.h"
  #include "ap.h"
  #include "bss.h"
  #include "scan.h"
  #include "offchannel.h"
  #include "interworking.h"
  #include "mesh.h"
  #include "mesh_mpm.h"
  #include "wmm_ac.h"
  
  
  #ifndef CONFIG_NO_SCAN_PROCESSING
  static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  					      int new_scan, int own_request);
  #endif /* CONFIG_NO_SCAN_PROCESSING */
  
  
  static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  			      struct wpa_ssid *ssid)
  {
  	struct os_reltime now;
  
  	if (ssid == NULL || ssid->disabled_until.sec == 0)
  		return 0;
  
  	os_get_reltime(&now);
  	if (ssid->disabled_until.sec > now.sec)
  		return ssid->disabled_until.sec - now.sec;
  
  	wpas_clear_temp_disabled(wpa_s, ssid, 0);
  
  	return 0;
  }
  
  
  /**
   * wpas_reenabled_network_time - Time until first network is re-enabled
   * @wpa_s: Pointer to wpa_supplicant data
   * Returns: If all enabled networks are temporarily disabled, returns the time
   *	(in sec) until the first network is re-enabled. Otherwise returns 0.
   *
   * This function is used in case all enabled networks are temporarily disabled,
   * in which case it returns the time (in sec) that the first network will be
   * re-enabled. The function assumes that at least one network is enabled.
   */
  static int wpas_reenabled_network_time(struct wpa_supplicant *wpa_s)
  {
  	struct wpa_ssid *ssid;
  	int disabled_for, res = 0;
  
  #ifdef CONFIG_INTERWORKING
  	if (wpa_s->conf->auto_interworking && wpa_s->conf->interworking &&
  	    wpa_s->conf->cred)
  		return 0;
  #endif /* CONFIG_INTERWORKING */
  
  	for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
  		if (ssid->disabled)
  			continue;
  
  		disabled_for = wpas_temp_disabled(wpa_s, ssid);
  		if (!disabled_for)
  			return 0;
  
  		if (!res || disabled_for < res)
  			res = disabled_for;
  	}
  
  	return res;
  }
  
  
  void wpas_network_reenabled(void *eloop_ctx, void *timeout_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  
  	if (wpa_s->disconnected || wpa_s->wpa_state != WPA_SCANNING)
  		return;
  
  	wpa_dbg(wpa_s, MSG_DEBUG,
  		"Try to associate due to network getting re-enabled");
  	if (wpa_supplicant_fast_associate(wpa_s) != 1) {
  		wpa_supplicant_cancel_sched_scan(wpa_s);
  		wpa_supplicant_req_scan(wpa_s, 0, 0);
  	}
  }
  
  
  static struct wpa_bss * wpa_supplicant_get_new_bss(
  	struct wpa_supplicant *wpa_s, const u8 *bssid)
  {
  	struct wpa_bss *bss = NULL;
  	struct wpa_ssid *ssid = wpa_s->current_ssid;
  
  	if (ssid->ssid_len > 0)
  		bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
  	if (!bss)
  		bss = wpa_bss_get_bssid(wpa_s, bssid);
  
  	return bss;
  }
  
  
  static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
  {
  	struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
  
  	if (!bss) {
  		wpa_supplicant_update_scan_results(wpa_s);
  
  		/* Get the BSS from the new scan results */
  		bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
  	}
  
  	if (bss)
  		wpa_s->current_bss = bss;
  }
  
  
  static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  {
  	struct wpa_ssid *ssid, *old_ssid;
  	u8 drv_ssid[MAX_SSID_LEN];
  	size_t drv_ssid_len;
  	int res;
  
  	if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
  		wpa_supplicant_update_current_bss(wpa_s);
  
  		if (wpa_s->current_ssid->ssid_len == 0)
  			return 0; /* current profile still in use */
  		res = wpa_drv_get_ssid(wpa_s, drv_ssid);
  		if (res < 0) {
  			wpa_msg(wpa_s, MSG_INFO,
  				"Failed to read SSID from driver");
  			return 0; /* try to use current profile */
  		}
  		drv_ssid_len = res;
  
  		if (drv_ssid_len == wpa_s->current_ssid->ssid_len &&
  		    os_memcmp(drv_ssid, wpa_s->current_ssid->ssid,
  			      drv_ssid_len) == 0)
  			return 0; /* current profile still in use */
  
  		wpa_msg(wpa_s, MSG_DEBUG,
  			"Driver-initiated BSS selection changed the SSID to %s",
  			wpa_ssid_txt(drv_ssid, drv_ssid_len));
  		/* continue selecting a new network profile */
  	}
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  		"information");
  	ssid = wpa_supplicant_get_ssid(wpa_s);
  	if (ssid == NULL) {
  		wpa_msg(wpa_s, MSG_INFO,
  			"No network configuration found for the current AP");
  		return -1;
  	}
  
  	if (wpas_network_disabled(wpa_s, ssid)) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
  		return -1;
  	}
  
  	if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
  	    disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
  		return -1;
  	}
  
  	res = wpas_temp_disabled(wpa_s, ssid);
  	if (res > 0) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
  			"disabled for %d second(s)", res);
  		return -1;
  	}
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
  		"current AP");
  	if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
  		u8 wpa_ie[80];
  		size_t wpa_ie_len = sizeof(wpa_ie);
  		if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
  					      wpa_ie, &wpa_ie_len) < 0)
  			wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
  	} else {
  		wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  	}
  
  	if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
  		eapol_sm_invalidate_cached_session(wpa_s->eapol);
  	old_ssid = wpa_s->current_ssid;
  	wpa_s->current_ssid = ssid;
  
  	wpa_supplicant_update_current_bss(wpa_s);
  
  	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);
  
  	return 0;
  }
  
  
  void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  
  	if (wpa_s->countermeasures) {
  		wpa_s->countermeasures = 0;
  		wpa_drv_set_countermeasures(wpa_s, 0);
  		wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
  
  		/*
  		 * It is possible that the device is sched scanning, which means
  		 * that a connection attempt will be done only when we receive
  		 * scan results. However, in this case, it would be preferable
  		 * to scan and connect immediately, so cancel the sched_scan and
  		 * issue a regular scan flow.
  		 */
  		wpa_supplicant_cancel_sched_scan(wpa_s);
  		wpa_supplicant_req_scan(wpa_s, 0, 0);
  	}
  }
  
  
  void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
  {
  	int bssid_changed;
  
  	wnm_bss_keep_alive_deinit(wpa_s);
  
  #ifdef CONFIG_IBSS_RSN
  	ibss_rsn_deinit(wpa_s->ibss_rsn);
  	wpa_s->ibss_rsn = NULL;
  #endif /* CONFIG_IBSS_RSN */
  
  #ifdef CONFIG_AP
  	wpa_supplicant_ap_deinit(wpa_s);
  #endif /* CONFIG_AP */
  
  	if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
  		return;
  
  	wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
  	bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
  	os_memset(wpa_s->bssid, 0, ETH_ALEN);
  	os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
  	sme_clear_on_disassoc(wpa_s);
  #ifdef CONFIG_P2P
  	os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
  #endif /* CONFIG_P2P */
  	wpa_s->current_bss = NULL;
  	wpa_s->assoc_freq = 0;
  
  	if (bssid_changed)
  		wpas_notify_bssid_changed(wpa_s);
  
  	eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
  	eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
  	if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
  		eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
  	wpa_s->ap_ies_from_associnfo = 0;
  	wpa_s->current_ssid = NULL;
  	eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
  	wpa_s->key_mgmt = 0;
  
  	wpas_rrm_reset(wpa_s);
  }
  
  
  static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
  {
  	struct wpa_ie_data ie;
  	int pmksa_set = -1;
  	size_t i;
  
  	if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
  	    ie.pmkid == NULL)
  		return;
  
  	for (i = 0; i < ie.num_pmkid; i++) {
  		pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
  						    ie.pmkid + i * PMKID_LEN,
  						    NULL, NULL, 0);
  		if (pmksa_set == 0) {
  			eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
  			break;
  		}
  	}
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
  		"PMKSA cache", pmksa_set == 0 ? "" : "not ");
  }
  
  
  static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
  						 union wpa_event_data *data)
  {
  	if (data == NULL) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
  			"event");
  		return;
  	}
  	wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
  		" index=%d preauth=%d",
  		MAC2STR(data->pmkid_candidate.bssid),
  		data->pmkid_candidate.index,
  		data->pmkid_candidate.preauth);
  
  	pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
  			    data->pmkid_candidate.index,
  			    data->pmkid_candidate.preauth);
  }
  
  
  static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
  {
  	if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
  	    wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
  		return 0;
  
  #ifdef IEEE8021X_EAPOL
  	if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
  	    wpa_s->current_ssid &&
  	    !(wpa_s->current_ssid->eapol_flags &
  	      (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
  	       EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
  		/* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
  		 * plaintext or static WEP keys). */
  		return 0;
  	}
  #endif /* IEEE8021X_EAPOL */
  
  	return 1;
  }
  
  
  /**
   * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
   * @wpa_s: pointer to wpa_supplicant data
   * @ssid: Configuration data for the network
   * Returns: 0 on success, -1 on failure
   *
   * This function is called when starting authentication with a network that is
   * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
   */
  int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
  			      struct wpa_ssid *ssid)
  {
  #ifdef IEEE8021X_EAPOL
  #ifdef PCSC_FUNCS
  	int aka = 0, sim = 0;
  
  	if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
  	    wpa_s->scard != NULL || wpa_s->conf->external_sim)
  		return 0;
  
  	if (ssid == NULL || ssid->eap.eap_methods == NULL) {
  		sim = 1;
  		aka = 1;
  	} else {
  		struct eap_method_type *eap = ssid->eap.eap_methods;
  		while (eap->vendor != EAP_VENDOR_IETF ||
  		       eap->method != EAP_TYPE_NONE) {
  			if (eap->vendor == EAP_VENDOR_IETF) {
  				if (eap->method == EAP_TYPE_SIM)
  					sim = 1;
  				else if (eap->method == EAP_TYPE_AKA ||
  					 eap->method == EAP_TYPE_AKA_PRIME)
  					aka = 1;
  			}
  			eap++;
  		}
  	}
  
  	if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
  		sim = 0;
  	if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
  	    eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
  	    NULL)
  		aka = 0;
  
  	if (!sim && !aka) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
  			"use SIM, but neither EAP-SIM nor EAP-AKA are "
  			"enabled");
  		return 0;
  	}
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
  		"(sim=%d aka=%d) - initialize PCSC", sim, aka);
  
  	wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
  	if (wpa_s->scard == NULL) {
  		wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
  			"(pcsc-lite)");
  		return -1;
  	}
  	wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
  	eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
  #endif /* PCSC_FUNCS */
  #endif /* IEEE8021X_EAPOL */
  
  	return 0;
  }
  
  
  #ifndef CONFIG_NO_SCAN_PROCESSING
  
  static int has_wep_key(struct wpa_ssid *ssid)
  {
  	int i;
  
  	for (i = 0; i < NUM_WEP_KEYS; i++) {
  		if (ssid->wep_key_len[i])
  			return 1;
  	}
  
  	return 0;
  }
  
  
  static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
  					struct wpa_ssid *ssid)
  {
  	int privacy = 0;
  
  	if (ssid->mixed_cell)
  		return 1;
  
  #ifdef CONFIG_WPS
  	if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
  		return 1;
  #endif /* CONFIG_WPS */
  
  	if (has_wep_key(ssid))
  		privacy = 1;
  
  #ifdef IEEE8021X_EAPOL
  	if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
  	    ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
  				 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
  		privacy = 1;
  #endif /* IEEE8021X_EAPOL */
  
  	if (wpa_key_mgmt_wpa(ssid->key_mgmt))
  		privacy = 1;
  
  	if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
  		privacy = 1;
  
  	if (bss->caps & IEEE80211_CAP_PRIVACY)
  		return privacy;
  	return !privacy;
  }
  
  
  static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
  					 struct wpa_ssid *ssid,
  					 struct wpa_bss *bss)
  {
  	struct wpa_ie_data ie;
  	int proto_match = 0;
  	const u8 *rsn_ie, *wpa_ie;
  	int ret;
  	int wep_ok;
  
  	ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
  	if (ret >= 0)
  		return ret;
  
  	/* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
  	wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
  		(((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
  		  ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
  		 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
  
  	rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
  	while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
  		proto_match++;
  
  		if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
  				"failed");
  			break;
  		}
  
  		if (wep_ok &&
  		    (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
  		{
  			wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
  				"in RSN IE");
  			return 1;
  		}
  
  		if (!(ie.proto & ssid->proto)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
  				"mismatch");
  			break;
  		}
  
  		if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
  				"cipher mismatch");
  			break;
  		}
  
  		if (!(ie.group_cipher & ssid->group_cipher)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
  				"cipher mismatch");
  			break;
  		}
  
  		if (!(ie.key_mgmt & ssid->key_mgmt)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
  				"mismatch");
  			break;
  		}
  
  #ifdef CONFIG_IEEE80211W
  		if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
  		    wpas_get_ssid_pmf(wpa_s, ssid) ==
  		    MGMT_FRAME_PROTECTION_REQUIRED) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
  				"frame protection");
  			break;
  		}
  #endif /* CONFIG_IEEE80211W */
  
  		wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
  		return 1;
  	}
  
  	wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
  	while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
  		proto_match++;
  
  		if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
  				"failed");
  			break;
  		}
  
  		if (wep_ok &&
  		    (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
  		{
  			wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
  				"in WPA IE");
  			return 1;
  		}
  
  		if (!(ie.proto & ssid->proto)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
  				"mismatch");
  			break;
  		}
  
  		if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
  				"cipher mismatch");
  			break;
  		}
  
  		if (!(ie.group_cipher & ssid->group_cipher)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
  				"cipher mismatch");
  			break;
  		}
  
  		if (!(ie.key_mgmt & ssid->key_mgmt)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
  				"mismatch");
  			break;
  		}
  
  		wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
  		return 1;
  	}
  
  	if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
  	    !rsn_ie) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
  		return 1;
  	}
  
  	if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
  	    wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
  		return 0;
  	}
  
  	if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
  	    wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
  		return 1;
  	}
  
  	if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
  		return 1;
  	}
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
  		"WPA/WPA2");
  
  	return 0;
  }
  
  
  static int freq_allowed(int *freqs, int freq)
  {
  	int i;
  
  	if (freqs == NULL)
  		return 1;
  
  	for (i = 0; freqs[i]; i++)
  		if (freqs[i] == freq)
  			return 1;
  	return 0;
  }
  
  
  static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
  {
  	const struct hostapd_hw_modes *mode = NULL, *modes;
  	const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
  	const u8 *rate_ie;
  	int i, j, k;
  
  	if (bss->freq == 0)
  		return 1; /* Cannot do matching without knowing band */
  
  	modes = wpa_s->hw.modes;
  	if (modes == NULL) {
  		/*
  		 * The driver does not provide any additional information
  		 * about the utilized hardware, so allow the connection attempt
  		 * to continue.
  		 */
  		return 1;
  	}
  
  	for (i = 0; i < wpa_s->hw.num_modes; i++) {
  		for (j = 0; j < modes[i].num_channels; j++) {
  			int freq = modes[i].channels[j].freq;
  			if (freq == bss->freq) {
  				if (mode &&
  				    mode->mode == HOSTAPD_MODE_IEEE80211G)
  					break; /* do not allow 802.11b replace
  						* 802.11g */
  				mode = &modes[i];
  				break;
  			}
  		}
  	}
  
  	if (mode == NULL)
  		return 0;
  
  	for (i = 0; i < (int) sizeof(scan_ie); i++) {
  		rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
  		if (rate_ie == NULL)
  			continue;
  
  		for (j = 2; j < rate_ie[1] + 2; j++) {
  			int flagged = !!(rate_ie[j] & 0x80);
  			int r = (rate_ie[j] & 0x7f) * 5;
  
  			/*
  			 * IEEE Std 802.11n-2009 7.3.2.2:
  			 * The new BSS Membership selector value is encoded
  			 * like a legacy basic rate, but it is not a rate and
  			 * only indicates if the BSS members are required to
  			 * support the mandatory features of Clause 20 [HT PHY]
  			 * in order to join the BSS.
  			 */
  			if (flagged && ((rate_ie[j] & 0x7f) ==
  					BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
  				if (!ht_supported(mode)) {
  					wpa_dbg(wpa_s, MSG_DEBUG,
  						"   hardware does not support "
  						"HT PHY");
  					return 0;
  				}
  				continue;
  			}
  
  			/* There's also a VHT selector for 802.11ac */
  			if (flagged && ((rate_ie[j] & 0x7f) ==
  					BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
  				if (!vht_supported(mode)) {
  					wpa_dbg(wpa_s, MSG_DEBUG,
  						"   hardware does not support "
  						"VHT PHY");
  					return 0;
  				}
  				continue;
  			}
  
  			if (!flagged)
  				continue;
  
  			/* check for legacy basic rates */
  			for (k = 0; k < mode->num_rates; k++) {
  				if (mode->rates[k] == r)
  					break;
  			}
  			if (k == mode->num_rates) {
  				/*
  				 * IEEE Std 802.11-2007 7.3.2.2 demands that in
  				 * order to join a BSS all required rates
  				 * have to be supported by the hardware.
  				 */
  				wpa_dbg(wpa_s, MSG_DEBUG,
  					"   hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)",
  					r / 10, r % 10,
  					bss->freq, mode->mode, mode->num_rates);
  				return 0;
  			}
  		}
  	}
  
  	return 1;
  }
  
  
  /*
   * Test whether BSS is in an ESS.
   * This is done differently in DMG (60 GHz) and non-DMG bands
   */
  static int bss_is_ess(struct wpa_bss *bss)
  {
  	if (bss_is_dmg(bss)) {
  		return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
  			IEEE80211_CAP_DMG_AP;
  	}
  
  	return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
  		IEEE80211_CAP_ESS);
  }
  
  
  static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
  {
  	size_t i;
  
  	for (i = 0; i < ETH_ALEN; i++) {
  		if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
  			return 0;
  	}
  	return 1;
  }
  
  
  static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
  {
  	size_t i;
  
  	for (i = 0; i < num; i++) {
  		const u8 *a = list + i * ETH_ALEN * 2;
  		const u8 *m = a + ETH_ALEN;
  
  		if (match_mac_mask(a, addr, m))
  			return 1;
  	}
  	return 0;
  }
  
  
  static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
  					    int i, struct wpa_bss *bss,
  					    struct wpa_ssid *group,
  					    int only_first_ssid)
  {
  	u8 wpa_ie_len, rsn_ie_len;
  	int wpa;
  	struct wpa_blacklist *e;
  	const u8 *ie;
  	struct wpa_ssid *ssid;
  	int osen;
  
  	ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
  	wpa_ie_len = ie ? ie[1] : 0;
  
  	ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
  	rsn_ie_len = ie ? ie[1] : 0;
  
  	ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
  	osen = ie != NULL;
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
  		"wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
  		i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
  		wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
  		wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
  		(wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
  		 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
  		" p2p" : "",
  		osen ? " osen=1" : "");
  
  	e = wpa_blacklist_get(wpa_s, bss->bssid);
  	if (e) {
  		int limit = 1;
  		if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
  			/*
  			 * When only a single network is enabled, we can
  			 * trigger blacklisting on the first failure. This
  			 * should not be done with multiple enabled networks to
  			 * avoid getting forced to move into a worse ESS on
  			 * single error if there are no other BSSes of the
  			 * current ESS.
  			 */
  			limit = 0;
  		}
  		if (e->count > limit) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
  				"(count=%d limit=%d)", e->count, limit);
  			return NULL;
  		}
  	}
  
  	if (bss->ssid_len == 0) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
  		return NULL;
  	}
  
  	if (disallowed_bssid(wpa_s, bss->bssid)) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
  		return NULL;
  	}
  
  	if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
  		return NULL;
  	}
  
  	wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
  
  	for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
  		int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
  		int res;
  
  		if (wpas_network_disabled(wpa_s, ssid)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
  			continue;
  		}
  
  		res = wpas_temp_disabled(wpa_s, ssid);
  		if (res > 0) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
  				"temporarily for %d second(s)", res);
  			continue;
  		}
  
  #ifdef CONFIG_WPS
  		if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
  				"(WPS)");
  			continue;
  		}
  
  		if (wpa && ssid->ssid_len == 0 &&
  		    wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
  			check_ssid = 0;
  
  		if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  			/* Only allow wildcard SSID match if an AP
  			 * advertises active WPS operation that matches
  			 * with our mode. */
  			check_ssid = 1;
  			if (ssid->ssid_len == 0 &&
  			    wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
  				check_ssid = 0;
  		}
  #endif /* CONFIG_WPS */
  
  		if (ssid->bssid_set && ssid->ssid_len == 0 &&
  		    os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
  			check_ssid = 0;
  
  		if (check_ssid &&
  		    (bss->ssid_len != ssid->ssid_len ||
  		     os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
  			continue;
  		}
  
  		if (ssid->bssid_set &&
  		    os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
  			continue;
  		}
  
  		/* check blacklist */
  		if (ssid->num_bssid_blacklist &&
  		    addr_in_list(bss->bssid, ssid->bssid_blacklist,
  				 ssid->num_bssid_blacklist)) {
  			wpa_dbg(wpa_s, MSG_DEBUG,
  				"   skip - BSSID blacklisted");
  			continue;
  		}
  
  		/* if there is a whitelist, only accept those APs */
  		if (ssid->num_bssid_whitelist &&
  		    !addr_in_list(bss->bssid, ssid->bssid_whitelist,
  				  ssid->num_bssid_whitelist)) {
  			wpa_dbg(wpa_s, MSG_DEBUG,
  				"   skip - BSSID not in whitelist");
  			continue;
  		}
  
  		if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
  			continue;
  
  		if (!osen && !wpa &&
  		    !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
  		    !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
  		    !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
  				"not allowed");
  			continue;
  		}
  
  		if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
  		    has_wep_key(ssid)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
  			continue;
  		}
  
  		if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
  				"not allowed");
  			continue;
  		}
  
  		if (!wpa_supplicant_match_privacy(bss, ssid)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
  				"mismatch");
  			continue;
  		}
  
  		if (!bss_is_ess(bss)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
  			continue;
  		}
  
  		if (!freq_allowed(ssid->freq_list, bss->freq)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
  				"allowed");
  			continue;
  		}
  
  		if (!rate_match(wpa_s, bss)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
  				"not match");
  			continue;
  		}
  
  #ifdef CONFIG_P2P
  		if (ssid->p2p_group &&
  		    !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
  		    !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
  			continue;
  		}
  
  		if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
  			struct wpabuf *p2p_ie;
  			u8 dev_addr[ETH_ALEN];
  
  			ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
  			if (ie == NULL) {
  				wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
  				continue;
  			}
  			p2p_ie = wpa_bss_get_vendor_ie_multi(
  				bss, P2P_IE_VENDOR_TYPE);
  			if (p2p_ie == NULL) {
  				wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
  				continue;
  			}
  
  			if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
  			    || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
  					 ETH_ALEN) != 0) {
  				wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
  				wpabuf_free(p2p_ie);
  				continue;
  			}
  			wpabuf_free(p2p_ie);
  		}
  
  		/*
  		 * TODO: skip the AP if its P2P IE has Group Formation
  		 * bit set in the P2P Group Capability Bitmap and we
  		 * are not in Group Formation with that device.
  		 */
  #endif /* CONFIG_P2P */
  
  		/* Matching configuration found */
  		return ssid;
  	}
  
  	/* No matching configuration found */
  	return NULL;
  }
  
  
  static struct wpa_bss *
  wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
  			  struct wpa_ssid *group,
  			  struct wpa_ssid **selected_ssid,
  			  int only_first_ssid)
  {
  	unsigned int i;
  
  	if (only_first_ssid)
  		wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
  			group->id);
  	else
  		wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
  			group->priority);
  
  	for (i = 0; i < wpa_s->last_scan_res_used; i++) {
  		struct wpa_bss *bss = wpa_s->last_scan_res[i];
  		*selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
  						    only_first_ssid);
  		if (!*selected_ssid)
  			continue;
  		wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
  			" ssid='%s'",
  			MAC2STR(bss->bssid),
  			wpa_ssid_txt(bss->ssid, bss->ssid_len));
  		return bss;
  	}
  
  	return NULL;
  }
  
  
  struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
  					     struct wpa_ssid **selected_ssid)
  {
  	struct wpa_bss *selected = NULL;
  	int prio;
  	struct wpa_ssid *next_ssid = NULL;
  	struct wpa_ssid *ssid;
  
  	if (wpa_s->last_scan_res == NULL ||
  	    wpa_s->last_scan_res_used == 0)
  		return NULL; /* no scan results from last update */
  
  	if (wpa_s->next_ssid) {
  		/* check that next_ssid is still valid */
  		for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
  			if (ssid == wpa_s->next_ssid)
  				break;
  		}
  		next_ssid = ssid;
  		wpa_s->next_ssid = NULL;
  	}
  
  	while (selected == NULL) {
  		for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
  			if (next_ssid && next_ssid->priority ==
  			    wpa_s->conf->pssid[prio]->priority) {
  				selected = wpa_supplicant_select_bss(
  					wpa_s, next_ssid, selected_ssid, 1);
  				if (selected)
  					break;
  			}
  			selected = wpa_supplicant_select_bss(
  				wpa_s, wpa_s->conf->pssid[prio],
  				selected_ssid, 0);
  			if (selected)
  				break;
  		}
  
  		if (selected == NULL && wpa_s->blacklist &&
  		    !wpa_s->countermeasures) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
  				"blacklist and try again");
  			wpa_blacklist_clear(wpa_s);
  			wpa_s->blacklist_cleared++;
  		} else if (selected == NULL)
  			break;
  	}
  
  	ssid = *selected_ssid;
  	if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set &&
  	    !ssid->passphrase && !ssid->ext_psk) {
  		const char *field_name, *txt = NULL;
  
  		wpa_dbg(wpa_s, MSG_DEBUG,
  			"PSK/passphrase not yet available for the selected network");
  
  		wpas_notify_network_request(wpa_s, ssid,
  					    WPA_CTRL_REQ_PSK_PASSPHRASE, NULL);
  
  		field_name = wpa_supplicant_ctrl_req_to_string(
  			WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt);
  		if (field_name == NULL)
  			return NULL;
  
  		wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
  
  		selected = NULL;
  	}
  
  	return selected;
  }
  
  
  static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
  					int timeout_sec, int timeout_usec)
  {
  	if (!wpa_supplicant_enabled_networks(wpa_s)) {
  		/*
  		 * No networks are enabled; short-circuit request so
  		 * we don't wait timeout seconds before transitioning
  		 * to INACTIVE state.
  		 */
  		wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
  			"since there are no enabled networks");
  		wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
  		return;
  	}
  
  	wpa_s->scan_for_connection = 1;
  	wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
  }
  
  
  int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
  			   struct wpa_bss *selected,
  			   struct wpa_ssid *ssid)
  {
  	if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
  		wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
  			"PBC session overlap");
  #ifdef CONFIG_P2P
  		if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
  		    wpa_s->p2p_in_provisioning) {
  			eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
  					       wpa_s, NULL);
  			return -1;
  		}
  #endif /* CONFIG_P2P */
  
  #ifdef CONFIG_WPS
  		wpas_wps_cancel(wpa_s);
  #endif /* CONFIG_WPS */
  		return -1;
  	}
  
  	wpa_msg(wpa_s, MSG_DEBUG,
  		"Considering connect request: reassociate: %d  selected: "
  		MACSTR "  bssid: " MACSTR "  pending: " MACSTR
  		"  wpa_state: %s  ssid=%p  current_ssid=%p",
  		wpa_s->reassociate, MAC2STR(selected->bssid),
  		MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
  		wpa_supplicant_state_txt(wpa_s->wpa_state),
  		ssid, wpa_s->current_ssid);
  
  	/*
  	 * Do not trigger new association unless the BSSID has changed or if
  	 * reassociation is requested. If we are in process of associating with
  	 * the selected BSSID, do not trigger new attempt.
  	 */
  	if (wpa_s->reassociate ||
  	    (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
  	     ((wpa_s->wpa_state != WPA_ASSOCIATING &&
  	       wpa_s->wpa_state != WPA_AUTHENTICATING) ||
  	      (!is_zero_ether_addr(wpa_s->pending_bssid) &&
  	       os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
  	       0) ||
  	      (is_zero_ether_addr(wpa_s->pending_bssid) &&
  	       ssid != wpa_s->current_ssid)))) {
  		if (wpa_supplicant_scard_init(wpa_s, ssid)) {
  			wpa_supplicant_req_new_scan(wpa_s, 10, 0);
  			return 0;
  		}
  		wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
  			MAC2STR(selected->bssid));
  		wpa_supplicant_associate(wpa_s, selected, ssid);
  	} else {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
  			"connect with the selected AP");
  	}
  
  	return 0;
  }
  
  
  static struct wpa_ssid *
  wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
  {
  	int prio;
  	struct wpa_ssid *ssid;
  
  	for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
  		for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
  		{
  			if (wpas_network_disabled(wpa_s, ssid))
  				continue;
  			if (ssid->mode == IEEE80211_MODE_IBSS ||
  			    ssid->mode == IEEE80211_MODE_AP ||
  			    ssid->mode == IEEE80211_MODE_MESH)
  				return ssid;
  		}
  	}
  	return NULL;
  }
  
  
  /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
   * on BSS added and BSS changed events */
  static void wpa_supplicant_rsn_preauth_scan_results(
  	struct wpa_supplicant *wpa_s)
  {
  	struct wpa_bss *bss;
  
  	if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
  		return;
  
  	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
  		const u8 *ssid, *rsn;
  
  		ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
  		if (ssid == NULL)
  			continue;
  
  		rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
  		if (rsn == NULL)
  			continue;
  
  		rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
  	}
  
  }
  
  
  static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
  				       struct wpa_bss *selected,
  				       struct wpa_ssid *ssid)
  {
  	struct wpa_bss *current_bss = NULL;
  #ifndef CONFIG_NO_ROAMING
  	int min_diff;
  #endif /* CONFIG_NO_ROAMING */
  
  	if (wpa_s->reassociate)
  		return 1; /* explicit request to reassociate */
  	if (wpa_s->wpa_state < WPA_ASSOCIATED)
  		return 1; /* we are not associated; continue */
  	if (wpa_s->current_ssid == NULL)
  		return 1; /* unknown current SSID */
  	if (wpa_s->current_ssid != ssid)
  		return 1; /* different network block */
  
  	if (wpas_driver_bss_selection(wpa_s))
  		return 0; /* Driver-based roaming */
  
  	if (wpa_s->current_ssid->ssid)
  		current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
  					  wpa_s->current_ssid->ssid,
  					  wpa_s->current_ssid->ssid_len);
  	if (!current_bss)
  		current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
  
  	if (!current_bss)
  		return 1; /* current BSS not seen in scan results */
  
  	if (current_bss == selected)
  		return 0;
  
  	if (selected->last_update_idx > current_bss->last_update_idx)
  		return 1; /* current BSS not seen in the last scan */
  
  #ifndef CONFIG_NO_ROAMING
  	wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
  	wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
  		" level=%d snr=%d est_throughput=%u",
  		MAC2STR(current_bss->bssid), current_bss->level,
  		current_bss->snr, current_bss->est_throughput);
  	wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
  		" level=%d snr=%d est_throughput=%u",
  		MAC2STR(selected->bssid), selected->level,
  		selected->snr, selected->est_throughput);
  
  	if (wpa_s->current_ssid->bssid_set &&
  	    os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
  	    0) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
  			"has preferred BSSID");
  		return 1;
  	}
  
  	if (selected->est_throughput > current_bss->est_throughput + 5000) {
  		wpa_dbg(wpa_s, MSG_DEBUG,
  			"Allow reassociation - selected BSS has better estimated throughput");
  		return 1;
  	}
  
  	if (current_bss->level < 0 && current_bss->level > selected->level) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
  			"signal level");
  		return 0;
  	}
  
  	min_diff = 2;
  	if (current_bss->level < 0) {
  		if (current_bss->level < -85)
  			min_diff = 1;
  		else if (current_bss->level < -80)
  			min_diff = 2;
  		else if (current_bss->level < -75)
  			min_diff = 3;
  		else if (current_bss->level < -70)
  			min_diff = 4;
  		else
  			min_diff = 5;
  	}
  	if (abs(current_bss->level - selected->level) < min_diff) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
  			"in signal level");
  		return 0;
  	}
  
  	return 1;
  #else /* CONFIG_NO_ROAMING */
  	return 0;
  #endif /* CONFIG_NO_ROAMING */
  }
  
  
  /* Return != 0 if no scan results could be fetched or if scan results should not
   * be shared with other virtual interfaces. */
  static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
  					      union wpa_event_data *data,
  					      int own_request)
  {
  	struct wpa_scan_results *scan_res = NULL;
  	int ret = 0;
  	int ap = 0;
  #ifndef CONFIG_NO_RANDOM_POOL
  	size_t i, num;
  #endif /* CONFIG_NO_RANDOM_POOL */
  
  #ifdef CONFIG_AP
  	if (wpa_s->ap_iface)
  		ap = 1;
  #endif /* CONFIG_AP */
  
  	wpa_supplicant_notify_scanning(wpa_s, 0);
  
  	scan_res = wpa_supplicant_get_scan_results(wpa_s,
  						   data ? &data->scan_info :
  						   NULL, 1);
  	if (scan_res == NULL) {
  		if (wpa_s->conf->ap_scan == 2 || ap ||
  		    wpa_s->scan_res_handler == scan_only_handler)
  			return -1;
  		if (!own_request)
  			return -1;
  		wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
  			"scanning again");
  		wpa_supplicant_req_new_scan(wpa_s, 1, 0);
  		ret = -1;
  		goto scan_work_done;
  	}
  
  #ifndef CONFIG_NO_RANDOM_POOL
  	num = scan_res->num;
  	if (num > 10)
  		num = 10;
  	for (i = 0; i < num; i++) {
  		u8 buf[5];
  		struct wpa_scan_res *res = scan_res->res[i];
  		buf[0] = res->bssid[5];
  		buf[1] = res->qual & 0xff;
  		buf[2] = res->noise & 0xff;
  		buf[3] = res->level & 0xff;
  		buf[4] = res->tsf & 0xff;
  		random_add_randomness(buf, sizeof(buf));
  	}
  #endif /* CONFIG_NO_RANDOM_POOL */
  
  	if (own_request && wpa_s->scan_res_handler &&
  	    (wpa_s->own_scan_running || !wpa_s->radio->external_scan_running)) {
  		void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
  					 struct wpa_scan_results *scan_res);
  
  		scan_res_handler = wpa_s->scan_res_handler;
  		wpa_s->scan_res_handler = NULL;
  		scan_res_handler(wpa_s, scan_res);
  		ret = -2;
  		goto scan_work_done;
  	}
  
  	if (ap) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
  #ifdef CONFIG_AP
  		if (wpa_s->ap_iface->scan_cb)
  			wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
  #endif /* CONFIG_AP */
  		goto scan_work_done;
  	}
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
  		wpa_s->own_scan_running, wpa_s->radio->external_scan_running);
  	if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
  	    wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
  		wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
  			     wpa_s->manual_scan_id);
  		wpa_s->manual_scan_use_id = 0;
  	} else {
  		wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
  	}
  	wpas_notify_scan_results(wpa_s);
  
  	wpas_notify_scan_done(wpa_s, 1);
  
  	if (!wpa_s->own_scan_running && wpa_s->radio->external_scan_running) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
  		wpa_scan_results_free(scan_res);
  		return 0;
  	}
  
  	if (wnm_scan_process(wpa_s, 1) > 0)
  		goto scan_work_done;
  
  	if (sme_proc_obss_scan(wpa_s) > 0)
  		goto scan_work_done;
  
  	if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
  		goto scan_work_done;
  
  	if (autoscan_notify_scan(wpa_s, scan_res))
  		goto scan_work_done;
  
  	if (wpa_s->disconnected) {
  		wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
  		goto scan_work_done;
  	}
  
  	if (!wpas_driver_bss_selection(wpa_s) &&
  	    bgscan_notify_scan(wpa_s, scan_res) == 1)
  		goto scan_work_done;
  
  	wpas_wps_update_ap_info(wpa_s, scan_res);
  
  	wpa_scan_results_free(scan_res);
  
  	if (wpa_s->scan_work) {
  		struct wpa_radio_work *work = wpa_s->scan_work;
  		wpa_s->scan_work = NULL;
  		radio_work_done(work);
  	}
  
  	return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
  
  scan_work_done:
  	wpa_scan_results_free(scan_res);
  	if (wpa_s->scan_work) {
  		struct wpa_radio_work *work = wpa_s->scan_work;
  		wpa_s->scan_work = NULL;
  		radio_work_done(work);
  	}
  	return ret;
  }
  
  
  static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  					      int new_scan, int own_request)
  {
  	struct wpa_bss *selected;
  	struct wpa_ssid *ssid = NULL;
  	int time_to_reenable = wpas_reenabled_network_time(wpa_s);
  
  	if (time_to_reenable > 0) {
  		wpa_dbg(wpa_s, MSG_DEBUG,
  			"Postpone network selection by %d seconds since all networks are disabled",
  			time_to_reenable);
  		eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
  		eloop_register_timeout(time_to_reenable, 0,
  				       wpas_network_reenabled, wpa_s, NULL);
  		return 0;
  	}
  
  	if (wpa_s->p2p_mgmt)
  		return 0; /* no normal connection on p2p_mgmt interface */
  
  	selected = wpa_supplicant_pick_network(wpa_s, &ssid);
  
  	if (selected) {
  		int skip;
  		skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
  		if (skip) {
  			if (new_scan)
  				wpa_supplicant_rsn_preauth_scan_results(wpa_s);
  			return 0;
  		}
  
  		if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
  			return -1;
  		}
  		if (new_scan)
  			wpa_supplicant_rsn_preauth_scan_results(wpa_s);
  		/*
  		 * Do not notify other virtual radios of scan results since we do not
  		 * want them to start other associations at the same time.
  		 */
  		return 1;
  	} else {
  #ifdef CONFIG_MESH
  		if (wpa_s->ifmsh) {
  			wpa_msg(wpa_s, MSG_INFO,
  				"Avoiding join because we already joined a mesh group");
  			return 0;
  		}
  #endif /* CONFIG_MESH */
  		wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
  		ssid = wpa_supplicant_pick_new_network(wpa_s);
  		if (ssid) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
  			wpa_supplicant_associate(wpa_s, NULL, ssid);
  			if (new_scan)
  				wpa_supplicant_rsn_preauth_scan_results(wpa_s);
  		} else if (own_request) {
  			/*
  			 * No SSID found. If SCAN results are as a result of
  			 * own scan request and not due to a scan request on
  			 * another shared interface, try another scan.
  			 */
  			int timeout_sec = wpa_s->scan_interval;
  			int timeout_usec = 0;
  #ifdef CONFIG_P2P
  			int res;
  
  			res = wpas_p2p_scan_no_go_seen(wpa_s);
  			if (res == 2)
  				return 2;
  			if (res == 1)
  				return 0;
  
  			if (wpa_s->p2p_in_provisioning ||
  			    wpa_s->show_group_started ||
  			    wpa_s->p2p_in_invitation) {
  				/*
  				 * Use shorter wait during P2P Provisioning
  				 * state and during P2P join-a-group operation
  				 * to speed up group formation.
  				 */
  				timeout_sec = 0;
  				timeout_usec = 250000;
  				wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
  							    timeout_usec);
  				return 0;
  			}
  #endif /* CONFIG_P2P */
  #ifdef CONFIG_INTERWORKING
  			if (wpa_s->conf->auto_interworking &&
  			    wpa_s->conf->interworking &&
  			    wpa_s->conf->cred) {
  				wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
  					"start ANQP fetch since no matching "
  					"networks found");
  				wpa_s->network_select = 1;
  				wpa_s->auto_network_select = 1;
  				interworking_start_fetch_anqp(wpa_s);
  				return 1;
  			}
  #endif /* CONFIG_INTERWORKING */
  #ifdef CONFIG_WPS
  			if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
  				wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
  				timeout_sec = 0;
  				timeout_usec = 500000;
  				wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
  							    timeout_usec);
  				return 0;
  			}
  #endif /* CONFIG_WPS */
  			if (wpa_supplicant_req_sched_scan(wpa_s))
  				wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
  							    timeout_usec);
  		}
  	}
  	return 0;
  }
  
  
  static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
  					     union wpa_event_data *data)
  {
  	struct wpa_supplicant *ifs;
  	int res;
  
  	res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
  	if (res == 2) {
  		/*
  		 * Interface may have been removed, so must not dereference
  		 * wpa_s after this.
  		 */
  		return 1;
  	}
  	if (res != 0) {
  		/*
  		 * If no scan results could be fetched, then no need to
  		 * notify those interfaces that did not actually request
  		 * this scan. Similarly, if scan results started a new operation on this
  		 * interface, do not notify other interfaces to avoid concurrent
  		 * operations during a connection attempt.
  		 */
  		return 0;
  	}
  
  	/*
  	 * Check other interfaces to see if they share the same radio. If
  	 * so, they get updated with this same scan info.
  	 */
  	dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
  			 radio_list) {
  		if (ifs != wpa_s) {
  			wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
  				   "sibling", ifs->ifname);
  			_wpa_supplicant_event_scan_results(ifs, data, 0);
  		}
  	}
  
  	return 0;
  }
  
  #endif /* CONFIG_NO_SCAN_PROCESSING */
  
  
  int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
  {
  #ifdef CONFIG_NO_SCAN_PROCESSING
  	return -1;
  #else /* CONFIG_NO_SCAN_PROCESSING */
  	struct os_reltime now;
  
  	if (wpa_s->last_scan_res_used <= 0)
  		return -1;
  
  	os_get_reltime(&now);
  	if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
  		wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
  		return -1;
  	}
  
  	return wpas_select_network_from_last_scan(wpa_s, 0, 1);
  #endif /* CONFIG_NO_SCAN_PROCESSING */
  }
  
  #ifdef CONFIG_WNM
  
  static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  
  	if (wpa_s->wpa_state < WPA_ASSOCIATED)
  		return;
  
  	if (!wpa_s->no_keep_alive) {
  		wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
  			   MAC2STR(wpa_s->bssid));
  		/* TODO: could skip this if normal data traffic has been sent */
  		/* TODO: Consider using some more appropriate data frame for
  		 * this */
  		if (wpa_s->l2)
  			l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
  				       (u8 *) "", 0);
  	}
  
  #ifdef CONFIG_SME
  	if (wpa_s->sme.bss_max_idle_period) {
  		unsigned int msec;
  		msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
  		if (msec > 100)
  			msec -= 100;
  		eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
  				       wnm_bss_keep_alive, wpa_s, NULL);
  	}
  #endif /* CONFIG_SME */
  }
  
  
  static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
  				   const u8 *ies, size_t ies_len)
  {
  	struct ieee802_11_elems elems;
  
  	if (ies == NULL)
  		return;
  
  	if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
  		return;
  
  #ifdef CONFIG_SME
  	if (elems.bss_max_idle_period) {
  		unsigned int msec;
  		wpa_s->sme.bss_max_idle_period =
  			WPA_GET_LE16(elems.bss_max_idle_period);
  		wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
  			   "TU)%s", wpa_s->sme.bss_max_idle_period,
  			   (elems.bss_max_idle_period[2] & 0x01) ?
  			   " (protected keep-live required)" : "");
  		if (wpa_s->sme.bss_max_idle_period == 0)
  			wpa_s->sme.bss_max_idle_period = 1;
  		if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
  			eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
  			 /* msec times 1000 */
  			msec = wpa_s->sme.bss_max_idle_period * 1024;
  			if (msec > 100)
  				msec -= 100;
  			eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
  					       wnm_bss_keep_alive, wpa_s,
  					       NULL);
  		}
  	}
  #endif /* CONFIG_SME */
  }
  
  #endif /* CONFIG_WNM */
  
  
  void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
  {
  #ifdef CONFIG_WNM
  	eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
  #endif /* CONFIG_WNM */
  }
  
  
  #ifdef CONFIG_INTERWORKING
  
  static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
  			    size_t len)
  {
  	int res;
  
  	wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
  	res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
  	if (res) {
  		wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
  	}
  
  	return res;
  }
  
  
  static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
  					    const u8 *ies, size_t ies_len)
  {
  	struct ieee802_11_elems elems;
  
  	if (ies == NULL)
  		return;
  
  	if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
  		return;
  
  	if (elems.qos_map_set) {
  		wpas_qos_map_set(wpa_s, elems.qos_map_set,
  				 elems.qos_map_set_len);
  	}
  }
  
  #endif /* CONFIG_INTERWORKING */
  
  
  static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
  					  union wpa_event_data *data)
  {
  	int l, len, found = 0, wpa_found, rsn_found;
  	const u8 *p;
  #ifdef CONFIG_IEEE80211R
  	u8 bssid[ETH_ALEN];
  #endif /* CONFIG_IEEE80211R */
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
  	if (data->assoc_info.req_ies)
  		wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
  			    data->assoc_info.req_ies_len);
  	if (data->assoc_info.resp_ies) {
  		wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
  			    data->assoc_info.resp_ies_len);
  #ifdef CONFIG_TDLS
  		wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
  					data->assoc_info.resp_ies_len);
  #endif /* CONFIG_TDLS */
  #ifdef CONFIG_WNM
  		wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
  				       data->assoc_info.resp_ies_len);
  #endif /* CONFIG_WNM */
  #ifdef CONFIG_INTERWORKING
  		interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
  						data->assoc_info.resp_ies_len);
  #endif /* CONFIG_INTERWORKING */
  	}
  	if (data->assoc_info.beacon_ies)
  		wpa_hexdump(MSG_DEBUG, "beacon_ies",
  			    data->assoc_info.beacon_ies,
  			    data->assoc_info.beacon_ies_len);
  	if (data->assoc_info.freq)
  		wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
  			data->assoc_info.freq);
  
  	p = data->assoc_info.req_ies;
  	l = data->assoc_info.req_ies_len;
  
  	/* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
  	while (p && l >= 2) {
  		len = p[1] + 2;
  		if (len > l) {
  			wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
  				    p, l);
  			break;
  		}
  		if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
  		     (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
  		    (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
  			if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
  				break;
  			found = 1;
  			wpa_find_assoc_pmkid(wpa_s);
  			break;
  		}
  		l -= len;
  		p += len;
  	}
  	if (!found && data->assoc_info.req_ies)
  		wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
  
  #ifdef CONFIG_IEEE80211R
  #ifdef CONFIG_SME
  	if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
  		if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
  		    wpa_ft_validate_reassoc_resp(wpa_s->wpa,
  						 data->assoc_info.resp_ies,
  						 data->assoc_info.resp_ies_len,
  						 bssid) < 0) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
  				"Reassociation Response failed");
  			wpa_supplicant_deauthenticate(
  				wpa_s, WLAN_REASON_INVALID_IE);
  			return -1;
  		}
  	}
  
  	p = data->assoc_info.resp_ies;
  	l = data->assoc_info.resp_ies_len;
  
  #ifdef CONFIG_WPS_STRICT
  	if (p && wpa_s->current_ssid &&
  	    wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
  		struct wpabuf *wps;
  		wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
  		if (wps == NULL) {
  			wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
  				"include WPS IE in (Re)Association Response");
  			return -1;
  		}
  
  		if (wps_validate_assoc_resp(wps) < 0) {
  			wpabuf_free(wps);
  			wpa_supplicant_deauthenticate(
  				wpa_s, WLAN_REASON_INVALID_IE);
  			return -1;
  		}
  		wpabuf_free(wps);
  	}
  #endif /* CONFIG_WPS_STRICT */
  
  	/* Go through the IEs and make a copy of the MDIE, if present. */
  	while (p && l >= 2) {
  		len = p[1] + 2;
  		if (len > l) {
  			wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
  				    p, l);
  			break;
  		}
  		if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
  		    p[1] >= MOBILITY_DOMAIN_ID_LEN) {
  			wpa_s->sme.ft_used = 1;
  			os_memcpy(wpa_s->sme.mobility_domain, p + 2,
  				  MOBILITY_DOMAIN_ID_LEN);
  			break;
  		}
  		l -= len;
  		p += len;
  	}
  #endif /* CONFIG_SME */
  
  	/* Process FT when SME is in the driver */
  	if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
  	    wpa_ft_is_completed(wpa_s->wpa)) {
  		if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
  		    wpa_ft_validate_reassoc_resp(wpa_s->wpa,
  						 data->assoc_info.resp_ies,
  						 data->assoc_info.resp_ies_len,
  						 bssid) < 0) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
  				"Reassociation Response failed");
  			wpa_supplicant_deauthenticate(
  				wpa_s, WLAN_REASON_INVALID_IE);
  			return -1;
  		}
  		wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
  	}
  
  	wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
  			     data->assoc_info.resp_ies_len);
  #endif /* CONFIG_IEEE80211R */
  
  	/* WPA/RSN IE from Beacon/ProbeResp */
  	p = data->assoc_info.beacon_ies;
  	l = data->assoc_info.beacon_ies_len;
  
  	/* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
  	 */
  	wpa_found = rsn_found = 0;
  	while (p && l >= 2) {
  		len = p[1] + 2;
  		if (len > l) {
  			wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
  				    p, l);
  			break;
  		}
  		if (!wpa_found &&
  		    p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
  		    os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
  			wpa_found = 1;
  			wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
  		}
  
  		if (!rsn_found &&
  		    p[0] == WLAN_EID_RSN && p[1] >= 2) {
  			rsn_found = 1;
  			wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
  		}
  
  		l -= len;
  		p += len;
  	}
  
  	if (!wpa_found && data->assoc_info.beacon_ies)
  		wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
  	if (!rsn_found && data->assoc_info.beacon_ies)
  		wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
  	if (wpa_found || rsn_found)
  		wpa_s->ap_ies_from_associnfo = 1;
  
  	if (wpa_s->assoc_freq && data->assoc_info.freq &&
  	    wpa_s->assoc_freq != data->assoc_info.freq) {
  		wpa_printf(MSG_DEBUG, "Operating frequency changed from "
  			   "%u to %u MHz",
  			   wpa_s->assoc_freq, data->assoc_info.freq);
  		wpa_supplicant_update_scan_results(wpa_s);
  	}
  
  	wpa_s->assoc_freq = data->assoc_info.freq;
  
  	return 0;
  }
  
  
  static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
  {
  	const u8 *bss_wpa = NULL, *bss_rsn = NULL;
  
  	if (!wpa_s->current_bss || !wpa_s->current_ssid)
  		return -1;
  
  	if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
  		return 0;
  
  	bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
  					WPA_IE_VENDOR_TYPE);
  	bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
  
  	if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
  				 bss_wpa ? 2 + bss_wpa[1] : 0) ||
  	    wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
  				 bss_rsn ? 2 + bss_rsn[1] : 0))
  		return -1;
  
  	return 0;
  }
  
  
  static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
  				       union wpa_event_data *data)
  {
  	u8 bssid[ETH_ALEN];
  	int ft_completed;
  
  #ifdef CONFIG_AP
  	if (wpa_s->ap_iface) {
  		if (!data)
  			return;
  		hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
  				    data->assoc_info.addr,
  				    data->assoc_info.req_ies,
  				    data->assoc_info.req_ies_len,
  				    data->assoc_info.reassoc);
  		return;
  	}
  #endif /* CONFIG_AP */
  
  	eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
  
  	ft_completed = wpa_ft_is_completed(wpa_s->wpa);
  	if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
  		return;
  
  	if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
  		wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
  		wpa_supplicant_deauthenticate(
  			wpa_s, WLAN_REASON_DEAUTH_LEAVING);
  		return;
  	}
  
  	wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
  	if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
  			MACSTR, MAC2STR(bssid));
  		random_add_randomness(bssid, ETH_ALEN);
  		os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
  		os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
  		wpas_notify_bssid_changed(wpa_s);
  
  		if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
  			wpa_clear_keys(wpa_s, bssid);
  		}
  		if (wpa_supplicant_select_config(wpa_s) < 0) {
  			wpa_supplicant_deauthenticate(
  				wpa_s, WLAN_REASON_DEAUTH_LEAVING);
  			return;
  		}
  
  		if (wpa_s->conf->ap_scan == 1 &&
  		    wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
  			if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
  				wpa_msg(wpa_s, MSG_WARNING,
  					"WPA/RSN IEs not updated");
  		}
  	}
  
  #ifdef CONFIG_SME
  	os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
  	wpa_s->sme.prev_bssid_set = 1;
  	wpa_s->sme.last_unprot_disconnect.sec = 0;
  #endif /* CONFIG_SME */
  
  	wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
  	if (wpa_s->current_ssid) {
  		/* When using scanning (ap_scan=1), SIM PC/SC interface can be
  		 * initialized before association, but for other modes,
  		 * initialize PC/SC here, if the current configuration needs
  		 * smartcard or SIM/USIM. */
  		wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
  	}
  	wpa_sm_notify_assoc(wpa_s->wpa, bssid);
  	if (wpa_s->l2)
  		l2_packet_notify_auth_start(wpa_s->l2);
  
  	/*
  	 * Set portEnabled first to FALSE in order to get EAP state machine out
  	 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
  	 * state machine may transit to AUTHENTICATING state based on obsolete
  	 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
  	 * AUTHENTICATED without ever giving chance to EAP state machine to
  	 * reset the state.
  	 */
  	if (!ft_completed) {
  		eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
  		eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
  	}
  	if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
  		eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
  	/* 802.1X::portControl = Auto */
  	eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
  	wpa_s->eapol_received = 0;
  	if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
  	    wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
  	    (wpa_s->current_ssid &&
  	     wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
  		if (wpa_s->current_ssid &&
  		    wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
  		    (wpa_s->drv_flags &
  		     WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
  			/*
  			 * Set the key after having received joined-IBSS event
  			 * from the driver.
  			 */
  			wpa_supplicant_set_wpa_none_key(wpa_s,
  							wpa_s->current_ssid);
  		}
  		wpa_supplicant_cancel_auth_timeout(wpa_s);
  		wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
  	} else if (!ft_completed) {
  		/* Timeout for receiving the first EAPOL packet */
  		wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
  	}
  	wpa_supplicant_cancel_scan(wpa_s);
  
  	if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
  	    wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
  		/*
  		 * We are done; the driver will take care of RSN 4-way
  		 * handshake.
  		 */
  		wpa_supplicant_cancel_auth_timeout(wpa_s);
  		wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
  		eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
  		eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
  	} else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
  		   wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
  		/*
  		 * The driver will take care of RSN 4-way handshake, so we need
  		 * to allow EAPOL supplicant to complete its work without
  		 * waiting for WPA supplicant.
  		 */
  		eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
  	} else if (ft_completed) {
  		/*
  		 * FT protocol completed - make sure EAPOL state machine ends
  		 * up in authenticated.
  		 */
  		wpa_supplicant_cancel_auth_timeout(wpa_s);
  		wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
  		eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
  		eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
  	}
  
  	wpa_s->last_eapol_matches_bssid = 0;
  
  	if (wpa_s->pending_eapol_rx) {
  		struct os_reltime now, age;
  		os_get_reltime(&now);
  		os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
  		if (age.sec == 0 && age.usec < 100000 &&
  		    os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
  		    0) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
  				"frame that was received just before "
  				"association notification");
  			wpa_supplicant_rx_eapol(
  				wpa_s, wpa_s->pending_eapol_rx_src,
  				wpabuf_head(wpa_s->pending_eapol_rx),
  				wpabuf_len(wpa_s->pending_eapol_rx));
  		}
  		wpabuf_free(wpa_s->pending_eapol_rx);
  		wpa_s->pending_eapol_rx = NULL;
  	}
  
  	if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
  	     wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
  	    wpa_s->current_ssid &&
  	    (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
  		/* Set static WEP keys again */
  		wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
  	}
  
  #ifdef CONFIG_IBSS_RSN
  	if (wpa_s->current_ssid &&
  	    wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
  	    wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
  	    wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
  	    wpa_s->ibss_rsn == NULL) {
  		wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
  		if (!wpa_s->ibss_rsn) {
  			wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
  			wpa_supplicant_deauthenticate(
  				wpa_s, WLAN_REASON_DEAUTH_LEAVING);
  			return;
  		}
  
  		ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
  	}
  #endif /* CONFIG_IBSS_RSN */
  
  	wpas_wps_notify_assoc(wpa_s, bssid);
  
  	if (data) {
  		wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
  				    data->assoc_info.resp_ies_len,
  				    &data->assoc_info.wmm_params);
  
  		if (wpa_s->reassoc_same_bss)
  			wmm_ac_restore_tspecs(wpa_s);
  	}
  }
  
  
  static int disconnect_reason_recoverable(u16 reason_code)
  {
  	return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
  		reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
  		reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
  }
  
  
  static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
  					  u16 reason_code,
  					  int locally_generated)
  {
  	const u8 *bssid;
  
  	if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
  		/*
  		 * At least Host AP driver and a Prism3 card seemed to be
  		 * generating streams of disconnected events when configuring
  		 * IBSS for WPA-None. Ignore them for now.
  		 */
  		return;
  	}
  
  	bssid = wpa_s->bssid;
  	if (is_zero_ether_addr(bssid))
  		bssid = wpa_s->pending_bssid;
  
  	if (!is_zero_ether_addr(bssid) ||
  	    wpa_s->wpa_state >= WPA_AUTHENTICATING) {
  		wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
  			" reason=%d%s",
  			MAC2STR(bssid), reason_code,
  			locally_generated ? " locally_generated=1" : "");
  	}
  }
  
  
  static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
  				 int locally_generated)
  {
  	if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
  	    !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
  		return 0; /* Not in 4-way handshake with PSK */
  
  	/*
  	 * It looks like connection was lost while trying to go through PSK
  	 * 4-way handshake. Filter out known disconnection cases that are caused
  	 * by something else than PSK mismatch to avoid confusing reports.
  	 */
  
  	if (locally_generated) {
  		if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
  			return 0;
  	}
  
  	return 1;
  }
  
  
  static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
  						 u16 reason_code,
  						 int locally_generated)
  {
  	const u8 *bssid;
  	int authenticating;
  	u8 prev_pending_bssid[ETH_ALEN];
  	struct wpa_bss *fast_reconnect = NULL;
  	struct wpa_ssid *fast_reconnect_ssid = NULL;
  	struct wpa_ssid *last_ssid;
  
  	authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
  	os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
  
  	if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
  		/*
  		 * At least Host AP driver and a Prism3 card seemed to be
  		 * generating streams of disconnected events when configuring
  		 * IBSS for WPA-None. Ignore them for now.
  		 */
  		wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
  			"IBSS/WPA-None mode");
  		return;
  	}
  
  	if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
  		wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
  			"pre-shared key may be incorrect");
  		if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
  			return; /* P2P group removed */
  		wpas_auth_failed(wpa_s, "WRONG_KEY");
  	}
  	if (!wpa_s->disconnected &&
  	    (!wpa_s->auto_reconnect_disabled ||
  	     wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
  	     wpas_wps_searching(wpa_s))) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
  			"reconnect (wps=%d/%d wpa_state=%d)",
  			wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
  			wpas_wps_searching(wpa_s),
  			wpa_s->wpa_state);
  		if (wpa_s->wpa_state == WPA_COMPLETED &&
  		    wpa_s->current_ssid &&
  		    wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
  		    !locally_generated &&
  		    disconnect_reason_recoverable(reason_code)) {
  			/*
  			 * It looks like the AP has dropped association with
  			 * us, but could allow us to get back in. Try to
  			 * reconnect to the same BSS without full scan to save
  			 * time for some common cases.
  			 */
  			fast_reconnect = wpa_s->current_bss;
  			fast_reconnect_ssid = wpa_s->current_ssid;
  		} else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
  			wpa_supplicant_req_scan(wpa_s, 0, 100000);
  		else
  			wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
  				"immediate scan");
  	} else {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
  			"try to re-connect");
  		wpa_s->reassociate = 0;
  		wpa_s->disconnected = 1;
  		wpa_supplicant_cancel_sched_scan(wpa_s);
  	}
  	bssid = wpa_s->bssid;
  	if (is_zero_ether_addr(bssid))
  		bssid = wpa_s->pending_bssid;
  	if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
  		wpas_connection_failed(wpa_s, bssid);
  	wpa_sm_notify_disassoc(wpa_s->wpa);
  	if (locally_generated)
  		wpa_s->disconnect_reason = -reason_code;
  	else
  		wpa_s->disconnect_reason = reason_code;
  	wpas_notify_disconnect_reason(wpa_s);
  	if (wpa_supplicant_dynamic_keys(wpa_s)) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
  		wpa_clear_keys(wpa_s, wpa_s->bssid);
  	}
  	last_ssid = wpa_s->current_ssid;
  	wpa_supplicant_mark_disassoc(wpa_s);
  
  	if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
  		sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
  		wpa_s->current_ssid = last_ssid;
  	}
  
  	if (fast_reconnect &&
  	    !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
  	    !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
  	    !disallowed_ssid(wpa_s, fast_reconnect->ssid,
  			     fast_reconnect->ssid_len) &&
  	    !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
  #ifndef CONFIG_NO_SCAN_PROCESSING
  		wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
  		if (wpa_supplicant_connect(wpa_s, fast_reconnect,
  					   fast_reconnect_ssid) < 0) {
  			/* Recover through full scan */
  			wpa_supplicant_req_scan(wpa_s, 0, 100000);
  		}
  #endif /* CONFIG_NO_SCAN_PROCESSING */
  	} else if (fast_reconnect) {
  		/*
  		 * Could not reconnect to the same BSS due to network being
  		 * disabled. Use a new scan to match the alternative behavior
  		 * above, i.e., to continue automatic reconnection attempt in a
  		 * way that enforces disabled network rules.
  		 */
  		wpa_supplicant_req_scan(wpa_s, 0, 100000);
  	}
  }
  
  
  #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
  void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  
  	if (!wpa_s->pending_mic_error_report)
  		return;
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
  	wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
  	wpa_s->pending_mic_error_report = 0;
  }
  #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
  
  
  static void
  wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
  					 union wpa_event_data *data)
  {
  	int pairwise;
  	struct os_reltime t;
  
  	wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
  	pairwise = (data && data->michael_mic_failure.unicast);
  	os_get_reltime(&t);
  	if ((wpa_s->last_michael_mic_error.sec &&
  	     !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
  	    wpa_s->pending_mic_error_report) {
  		if (wpa_s->pending_mic_error_report) {
  			/*
  			 * Send the pending MIC error report immediately since
  			 * we are going to start countermeasures and AP better
  			 * do the same.
  			 */
  			wpa_sm_key_request(wpa_s->wpa, 1,
  					   wpa_s->pending_mic_error_pairwise);
  		}
  
  		/* Send the new MIC error report immediately since we are going
  		 * to start countermeasures and AP better do the same.
  		 */
  		wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
  
  		/* initialize countermeasures */
  		wpa_s->countermeasures = 1;
  
  		wpa_blacklist_add(wpa_s, wpa_s->bssid);
  
  		wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
  
  		/*
  		 * Need to wait for completion of request frame. We do not get
  		 * any callback for the message completion, so just wait a
  		 * short while and hope for the best. */
  		os_sleep(0, 10000);
  
  		wpa_drv_set_countermeasures(wpa_s, 1);
  		wpa_supplicant_deauthenticate(wpa_s,
  					      WLAN_REASON_MICHAEL_MIC_FAILURE);
  		eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
  				     wpa_s, NULL);
  		eloop_register_timeout(60, 0,
  				       wpa_supplicant_stop_countermeasures,
  				       wpa_s, NULL);
  		/* TODO: mark the AP rejected for 60 second. STA is
  		 * allowed to associate with another AP.. */
  	} else {
  #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
  		if (wpa_s->mic_errors_seen) {
  			/*
  			 * Reduce the effectiveness of Michael MIC error
  			 * reports as a means for attacking against TKIP if
  			 * more than one MIC failure is noticed with the same
  			 * PTK. We delay the transmission of the reports by a
  			 * random time between 0 and 60 seconds in order to
  			 * force the attacker wait 60 seconds before getting
  			 * the information on whether a frame resulted in a MIC
  			 * failure.
  			 */
  			u8 rval[4];
  			int sec;
  
  			if (os_get_random(rval, sizeof(rval)) < 0)
  				sec = os_random() % 60;
  			else
  				sec = WPA_GET_BE32(rval) % 60;
  			wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
  				"report %d seconds", sec);
  			wpa_s->pending_mic_error_report = 1;
  			wpa_s->pending_mic_error_pairwise = pairwise;
  			eloop_cancel_timeout(
  				wpa_supplicant_delayed_mic_error_report,
  				wpa_s, NULL);
  			eloop_register_timeout(
  				sec, os_random() % 1000000,
  				wpa_supplicant_delayed_mic_error_report,
  				wpa_s, NULL);
  		} else {
  			wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
  		}
  #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
  		wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
  #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
  	}
  	wpa_s->last_michael_mic_error = t;
  	wpa_s->mic_errors_seen++;
  }
  
  
  #ifdef CONFIG_TERMINATE_ONLASTIF
  static int any_interfaces(struct wpa_supplicant *head)
  {
  	struct wpa_supplicant *wpa_s;
  
  	for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
  		if (!wpa_s->interface_removed)
  			return 1;
  	return 0;
  }
  #endif /* CONFIG_TERMINATE_ONLASTIF */
  
  
  static void
  wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
  				      union wpa_event_data *data)
  {
  	if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
  		return;
  
  	switch (data->interface_status.ievent) {
  	case EVENT_INTERFACE_ADDED:
  		if (!wpa_s->interface_removed)
  			break;
  		wpa_s->interface_removed = 0;
  		wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
  		if (wpa_supplicant_driver_init(wpa_s) < 0) {
  			wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
  				"driver after interface was added");
  		}
  		break;
  	case EVENT_INTERFACE_REMOVED:
  		wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
  		wpa_s->interface_removed = 1;
  		wpa_supplicant_mark_disassoc(wpa_s);
  		wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
  		l2_packet_deinit(wpa_s->l2);
  		wpa_s->l2 = NULL;
  #ifdef CONFIG_TERMINATE_ONLASTIF
  		/* check if last interface */
  		if (!any_interfaces(wpa_s->global->ifaces))
  			eloop_terminate();
  #endif /* CONFIG_TERMINATE_ONLASTIF */
  		break;
  	}
  }
  
  
  #ifdef CONFIG_PEERKEY
  static void
  wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
  			      union wpa_event_data *data)
  {
  	if (data == NULL)
  		return;
  	wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
  }
  #endif /* CONFIG_PEERKEY */
  
  
  #ifdef CONFIG_TDLS
  static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
  				      union wpa_event_data *data)
  {
  	if (data == NULL)
  		return;
  	switch (data->tdls.oper) {
  	case TDLS_REQUEST_SETUP:
  		wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
  		if (wpa_tdls_is_external_setup(wpa_s->wpa))
  			wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
  		else
  			wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
  		break;
  	case TDLS_REQUEST_TEARDOWN:
  		if (wpa_tdls_is_external_setup(wpa_s->wpa))
  			wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
  					       data->tdls.reason_code);
  		else
  			wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
  					  data->tdls.peer);
  		break;
  	case TDLS_REQUEST_DISCOVER:
  			wpa_tdls_send_discovery_request(wpa_s->wpa,
  							data->tdls.peer);
  		break;
  	}
  }
  #endif /* CONFIG_TDLS */
  
  
  #ifdef CONFIG_WNM
  static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
  				     union wpa_event_data *data)
  {
  	if (data == NULL)
  		return;
  	switch (data->wnm.oper) {
  	case WNM_OPER_SLEEP:
  		wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
  			   "(action=%d, intval=%d)",
  			   data->wnm.sleep_action, data->wnm.sleep_intval);
  		ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
  					     data->wnm.sleep_intval, NULL);
  		break;
  	}
  }
  #endif /* CONFIG_WNM */
  
  
  #ifdef CONFIG_IEEE80211R
  static void
  wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
  				 union wpa_event_data *data)
  {
  	if (data == NULL)
  		return;
  
  	if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
  				    data->ft_ies.ies_len,
  				    data->ft_ies.ft_action,
  				    data->ft_ies.target_ap,
  				    data->ft_ies.ric_ies,
  				    data->ft_ies.ric_ies_len) < 0) {
  		/* TODO: prevent MLME/driver from trying to associate? */
  	}
  }
  #endif /* CONFIG_IEEE80211R */
  
  
  #ifdef CONFIG_IBSS_RSN
  static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
  						union wpa_event_data *data)
  {
  	struct wpa_ssid *ssid;
  	if (wpa_s->wpa_state < WPA_ASSOCIATED)
  		return;
  	if (data == NULL)
  		return;
  	ssid = wpa_s->current_ssid;
  	if (ssid == NULL)
  		return;
  	if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
  		return;
  
  	ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
  }
  
  
  static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
  					   union wpa_event_data *data)
  {
  	struct wpa_ssid *ssid = wpa_s->current_ssid;
  
  	if (ssid == NULL)
  		return;
  
  	/* check if the ssid is correctly configured as IBSS/RSN */
  	if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
  		return;
  
  	ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
  			     data->rx_mgmt.frame_len);
  }
  #endif /* CONFIG_IBSS_RSN */
  
  
  #ifdef CONFIG_IEEE80211R
  static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
  			 size_t len)
  {
  	const u8 *sta_addr, *target_ap_addr;
  	u16 status;
  
  	wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
  	if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
  		return; /* only SME case supported for now */
  	if (len < 1 + 2 * ETH_ALEN + 2)
  		return;
  	if (data[0] != 2)
  		return; /* Only FT Action Response is supported for now */
  	sta_addr = data + 1;
  	target_ap_addr = data + 1 + ETH_ALEN;
  	status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
  	wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
  		MACSTR " TargetAP " MACSTR " status %u",
  		MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
  
  	if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
  			" in FT Action Response", MAC2STR(sta_addr));
  		return;
  	}
  
  	if (status) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
  			"failure (status code %d)", status);
  		/* TODO: report error to FT code(?) */
  		return;
  	}
  
  	if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
  				    len - (1 + 2 * ETH_ALEN + 2), 1,
  				    target_ap_addr, NULL, 0) < 0)
  		return;
  
  #ifdef CONFIG_SME
  	{
  		struct wpa_bss *bss;
  		bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
  		if (bss)
  			wpa_s->sme.freq = bss->freq;
  		wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
  		sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
  			      WLAN_AUTH_FT);
  	}
  #endif /* CONFIG_SME */
  }
  #endif /* CONFIG_IEEE80211R */
  
  
  static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
  					       struct unprot_deauth *e)
  {
  #ifdef CONFIG_IEEE80211W
  	wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
  		   "dropped: " MACSTR " -> " MACSTR
  		   " (reason code %u)",
  		   MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
  	sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
  #endif /* CONFIG_IEEE80211W */
  }
  
  
  static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
  						 struct unprot_disassoc *e)
  {
  #ifdef CONFIG_IEEE80211W
  	wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
  		   "dropped: " MACSTR " -> " MACSTR
  		   " (reason code %u)",
  		   MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
  	sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
  #endif /* CONFIG_IEEE80211W */
  }
  
  
  static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
  				  u16 reason_code, int locally_generated,
  				  const u8 *ie, size_t ie_len, int deauth)
  {
  #ifdef CONFIG_AP
  	if (wpa_s->ap_iface && addr) {
  		hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
  		return;
  	}
  
  	if (wpa_s->ap_iface) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
  		return;
  	}
  #endif /* CONFIG_AP */
  
  	if (!locally_generated)
  		wpa_s->own_disconnect_req = 0;
  
  	wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
  
  	if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
  	      ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
  		(wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
  	       eapol_sm_failed(wpa_s->eapol))) &&
  	     !wpa_s->eap_expected_failure))
  		wpas_auth_failed(wpa_s, "AUTH_FAILED");
  
  #ifdef CONFIG_P2P
  	if (deauth && reason_code > 0) {
  		if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
  					  locally_generated) > 0) {
  			/*
  			 * The interface was removed, so cannot continue
  			 * processing any additional operations after this.
  			 */
  			return;
  		}
  	}
  #endif /* CONFIG_P2P */
  
  	wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
  					     locally_generated);
  }
  
  
  static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
  				struct disassoc_info *info)
  {
  	u16 reason_code = 0;
  	int locally_generated = 0;
  	const u8 *addr = NULL;
  	const u8 *ie = NULL;
  	size_t ie_len = 0;
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
  
  	if (info) {
  		addr = info->addr;
  		ie = info->ie;
  		ie_len = info->ie_len;
  		reason_code = info->reason_code;
  		locally_generated = info->locally_generated;
  		wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
  			locally_generated ? " (locally generated)" : "");
  		if (addr)
  			wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
  				MAC2STR(addr));
  		wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
  			    ie, ie_len);
  	}
  
  #ifdef CONFIG_AP
  	if (wpa_s->ap_iface && info && info->addr) {
  		hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
  		return;
  	}
  
  	if (wpa_s->ap_iface) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
  		return;
  	}
  #endif /* CONFIG_AP */
  
  #ifdef CONFIG_P2P
  	if (info) {
  		wpas_p2p_disassoc_notif(
  			wpa_s, info->addr, reason_code, info->ie, info->ie_len,
  			locally_generated);
  	}
  #endif /* CONFIG_P2P */
  
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
  		sme_event_disassoc(wpa_s, info);
  
  	wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
  			      ie, ie_len, 0);
  }
  
  
  static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
  			      struct deauth_info *info)
  {
  	u16 reason_code = 0;
  	int locally_generated = 0;
  	const u8 *addr = NULL;
  	const u8 *ie = NULL;
  	size_t ie_len = 0;
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
  
  	if (info) {
  		addr = info->addr;
  		ie = info->ie;
  		ie_len = info->ie_len;
  		reason_code = info->reason_code;
  		locally_generated = info->locally_generated;
  		wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
  			reason_code,
  			locally_generated ? " (locally generated)" : "");
  		if (addr) {
  			wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
  				MAC2STR(addr));
  		}
  		wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
  			    ie, ie_len);
  	}
  
  	wpa_reset_ft_completed(wpa_s->wpa);
  
  	wpas_event_disconnect(wpa_s, addr, reason_code,
  			      locally_generated, ie, ie_len, 1);
  }
  
  
  static const char * reg_init_str(enum reg_change_initiator init)
  {
  	switch (init) {
  	case REGDOM_SET_BY_CORE:
  		return "CORE";
  	case REGDOM_SET_BY_USER:
  		return "USER";
  	case REGDOM_SET_BY_DRIVER:
  		return "DRIVER";
  	case REGDOM_SET_BY_COUNTRY_IE:
  		return "COUNTRY_IE";
  	case REGDOM_BEACON_HINT:
  		return "BEACON_HINT";
  	}
  	return "?";
  }
  
  
  static const char * reg_type_str(enum reg_type type)
  {
  	switch (type) {
  	case REGDOM_TYPE_UNKNOWN:
  		return "UNKNOWN";
  	case REGDOM_TYPE_COUNTRY:
  		return "COUNTRY";
  	case REGDOM_TYPE_WORLD:
  		return "WORLD";
  	case REGDOM_TYPE_CUSTOM_WORLD:
  		return "CUSTOM_WORLD";
  	case REGDOM_TYPE_INTERSECTION:
  		return "INTERSECTION";
  	}
  	return "?";
  }
  
  
  static void wpa_supplicant_update_channel_list(
  	struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
  {
  	struct wpa_supplicant *ifs;
  
  	wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
  		reg_init_str(info->initiator), reg_type_str(info->type),
  		info->alpha2[0] ? " alpha2=" : "",
  		info->alpha2[0] ? info->alpha2 : "");
  
  	if (wpa_s->drv_priv == NULL)
  		return; /* Ignore event during drv initialization */
  
  	free_hw_features(wpa_s);
  	wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
  		wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
  
  	wpas_p2p_update_channel_list(wpa_s);
  
  	/*
  	 * Check other interfaces to see if they share the same radio. If
  	 * so, they get updated with this same hw mode info.
  	 */
  	dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
  			 radio_list) {
  		if (ifs != wpa_s) {
  			wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
  				   ifs->ifname);
  			free_hw_features(ifs);
  			ifs->hw.modes = wpa_drv_get_hw_feature_data(
  				ifs, &ifs->hw.num_modes, &ifs->hw.flags);
  		}
  	}
  
  	/* Restart sched_scan with updated channel list */
  	if (wpa_s->sched_scanning) {
  		wpa_dbg(wpa_s, MSG_DEBUG,
  			"Channel list changed restart sched scan.");
  		wpa_supplicant_cancel_sched_scan(wpa_s);
  		wpa_supplicant_req_scan(wpa_s, 0, 0);
  	}
  }
  
  
  static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
  				      const u8 *frame, size_t len, int freq,
  				      int rssi)
  {
  	const struct ieee80211_mgmt *mgmt;
  	const u8 *payload;
  	size_t plen;
  	u8 category;
  
  	if (len < IEEE80211_HDRLEN + 2)
  		return;
  
  	mgmt = (const struct ieee80211_mgmt *) frame;
  	payload = frame + IEEE80211_HDRLEN;
  	category = *payload++;
  	plen = len - IEEE80211_HDRLEN - 1;
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
  		" Category=%u DataLen=%d freq=%d MHz",
  		MAC2STR(mgmt->sa), category, (int) plen, freq);
  
  	if (category == WLAN_ACTION_WMM) {
  		wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
  		return;
  	}
  
  #ifdef CONFIG_IEEE80211R
  	if (category == WLAN_ACTION_FT) {
  		ft_rx_action(wpa_s, payload, plen);
  		return;
  	}
  #endif /* CONFIG_IEEE80211R */
  
  #ifdef CONFIG_IEEE80211W
  #ifdef CONFIG_SME
  	if (category == WLAN_ACTION_SA_QUERY) {
  		sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
  		return;
  	}
  #endif /* CONFIG_SME */
  #endif /* CONFIG_IEEE80211W */
  
  #ifdef CONFIG_WNM
  	if (mgmt->u.action.category == WLAN_ACTION_WNM) {
  		ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
  		return;
  	}
  #endif /* CONFIG_WNM */
  
  #ifdef CONFIG_GAS
  	if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
  	     mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
  	    gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
  			 mgmt->u.action.category,
  			 payload, plen, freq) == 0)
  		return;
  #endif /* CONFIG_GAS */
  
  #ifdef CONFIG_TDLS
  	if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
  	    payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
  		wpa_dbg(wpa_s, MSG_DEBUG,
  			"TDLS: Received Discovery Response from " MACSTR,
  			MAC2STR(mgmt->sa));
  		return;
  	}
  #endif /* CONFIG_TDLS */
  
  #ifdef CONFIG_INTERWORKING
  	if (category == WLAN_ACTION_QOS && plen >= 1 &&
  	    payload[0] == QOS_QOS_MAP_CONFIG) {
  		const u8 *pos = payload + 1;
  		size_t qlen = plen - 1;
  		wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
  			MACSTR, MAC2STR(mgmt->sa));
  		if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
  		    qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
  		    pos[1] <= qlen - 2 && pos[1] >= 16)
  			wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
  		return;
  	}
  #endif /* CONFIG_INTERWORKING */
  
  	if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
  	    payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
  		wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
  		return;
  	}
  
  	if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
  	    payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
  		wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
  							 payload + 1, plen - 1,
  							 rssi);
  		return;
  	}
  
  	wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
  			   category, payload, plen, freq);
  	if (wpa_s->ifmsh)
  		mesh_mpm_action_rx(wpa_s, mgmt, len);
  }
  
  
  static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
  					     union wpa_event_data *event)
  {
  #ifdef CONFIG_P2P
  	struct wpa_supplicant *ifs;
  #endif /* CONFIG_P2P */
  	struct wpa_freq_range_list *list;
  	char *str = NULL;
  
  	list = &event->freq_range;
  
  	if (list->num)
  		str = freq_range_list_str(list);
  	wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
  		str ? str : "");
  
  #ifdef CONFIG_P2P
  	if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
  		wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
  			__func__);
  	} else {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
  		wpas_p2p_update_channel_list(wpa_s);
  	}
  
  	for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
  		int freq;
  		if (!ifs->current_ssid ||
  		    !ifs->current_ssid->p2p_group ||
  		    (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
  		     ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
  			continue;
  
  		freq = ifs->current_ssid->frequency;
  		if (!freq_range_list_includes(list, freq)) {
  			wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
  				freq);
  			continue;
  		}
  
  		wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
  			freq);
  		/* TODO: Consider using CSA or removing the group within
  		 * wpa_supplicant */
  		wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
  	}
  #endif /* CONFIG_P2P */
  
  	os_free(str);
  }
  
  
  static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
  					    union wpa_event_data *data)
  {
  	wpa_dbg(wpa_s, MSG_DEBUG,
  		"Connection authorized by device, previous state %d",
  		wpa_s->wpa_state);
  	if (wpa_s->wpa_state == WPA_ASSOCIATED) {
  		wpa_supplicant_cancel_auth_timeout(wpa_s);
  		wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
  		eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
  		eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
  	}
  	wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
  	wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
  			       data->assoc_info.ptk_kck_len,
  			       data->assoc_info.ptk_kek,
  			       data->assoc_info.ptk_kek_len);
  }
  
  
  void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
  			  union wpa_event_data *data)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	int resched;
  
  	if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
  	    event != EVENT_INTERFACE_ENABLED &&
  	    event != EVENT_INTERFACE_STATUS &&
  	    event != EVENT_SCHED_SCAN_STOPPED) {
  		wpa_dbg(wpa_s, MSG_DEBUG,
  			"Ignore event %s (%d) while interface is disabled",
  			event_to_string(event), event);
  		return;
  	}
  
  #ifndef CONFIG_NO_STDOUT_DEBUG
  {
  	int level = MSG_DEBUG;
  
  	if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
  		const struct ieee80211_hdr *hdr;
  		u16 fc;
  		hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
  		fc = le_to_host16(hdr->frame_control);
  		if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
  		    WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
  			level = MSG_EXCESSIVE;
  	}
  
  	wpa_dbg(wpa_s, level, "Event %s (%d) received",
  		event_to_string(event), event);
  }
  #endif /* CONFIG_NO_STDOUT_DEBUG */
  
  	switch (event) {
  	case EVENT_AUTH:
  		sme_event_auth(wpa_s, data);
  		break;
  	case EVENT_ASSOC:
  		wpa_supplicant_event_assoc(wpa_s, data);
  		if (data && data->assoc_info.authorized)
  			wpa_supplicant_event_assoc_auth(wpa_s, data);
  		break;
  	case EVENT_DISASSOC:
  		wpas_event_disassoc(wpa_s,
  				    data ? &data->disassoc_info : NULL);
  		break;
  	case EVENT_DEAUTH:
  		wpas_event_deauth(wpa_s,
  				  data ? &data->deauth_info : NULL);
  		break;
  	case EVENT_MICHAEL_MIC_FAILURE:
  		wpa_supplicant_event_michael_mic_failure(wpa_s, data);
  		break;
  #ifndef CONFIG_NO_SCAN_PROCESSING
  	case EVENT_SCAN_STARTED:
  		os_get_reltime(&wpa_s->scan_start_time);
  		if (wpa_s->own_scan_requested) {
  			struct os_reltime diff;
  
  			os_reltime_sub(&wpa_s->scan_start_time,
  				       &wpa_s->scan_trigger_time, &diff);
  			wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
  				diff.sec, diff.usec);
  			wpa_s->own_scan_requested = 0;
  			wpa_s->own_scan_running = 1;
  			if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
  			    wpa_s->manual_scan_use_id) {
  				wpa_msg_ctrl(wpa_s, MSG_INFO,
  					     WPA_EVENT_SCAN_STARTED "id=%u",
  					     wpa_s->manual_scan_id);
  			} else {
  				wpa_msg_ctrl(wpa_s, MSG_INFO,
  					     WPA_EVENT_SCAN_STARTED);
  			}
  		} else {
  			wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
  			wpa_s->radio->external_scan_running = 1;
  			wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
  		}
  		break;
  	case EVENT_SCAN_RESULTS:
  		if (os_reltime_initialized(&wpa_s->scan_start_time)) {
  			struct os_reltime now, diff;
  			os_get_reltime(&now);
  			os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
  			wpa_s->scan_start_time.sec = 0;
  			wpa_s->scan_start_time.usec = 0;
  			wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
  				diff.sec, diff.usec);
  		}
  		if (wpa_supplicant_event_scan_results(wpa_s, data))
  			break; /* interface may have been removed */
  		wpa_s->own_scan_running = 0;
  		wpa_s->radio->external_scan_running = 0;
  		radio_work_check_next(wpa_s);
  		break;
  #endif /* CONFIG_NO_SCAN_PROCESSING */
  	case EVENT_ASSOCINFO:
  		wpa_supplicant_event_associnfo(wpa_s, data);
  		break;
  	case EVENT_INTERFACE_STATUS:
  		wpa_supplicant_event_interface_status(wpa_s, data);
  		break;
  	case EVENT_PMKID_CANDIDATE:
  		wpa_supplicant_event_pmkid_candidate(wpa_s, data);
  		break;
  #ifdef CONFIG_PEERKEY
  	case EVENT_STKSTART:
  		wpa_supplicant_event_stkstart(wpa_s, data);
  		break;
  #endif /* CONFIG_PEERKEY */
  #ifdef CONFIG_TDLS
  	case EVENT_TDLS:
  		wpa_supplicant_event_tdls(wpa_s, data);
  		break;
  #endif /* CONFIG_TDLS */
  #ifdef CONFIG_WNM
  	case EVENT_WNM:
  		wpa_supplicant_event_wnm(wpa_s, data);
  		break;
  #endif /* CONFIG_WNM */
  #ifdef CONFIG_IEEE80211R
  	case EVENT_FT_RESPONSE:
  		wpa_supplicant_event_ft_response(wpa_s, data);
  		break;
  #endif /* CONFIG_IEEE80211R */
  #ifdef CONFIG_IBSS_RSN
  	case EVENT_IBSS_RSN_START:
  		wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
  		break;
  #endif /* CONFIG_IBSS_RSN */
  	case EVENT_ASSOC_REJECT:
  		if (data->assoc_reject.bssid)
  			wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
  				"bssid=" MACSTR	" status_code=%u",
  				MAC2STR(data->assoc_reject.bssid),
  				data->assoc_reject.status_code);
  		else
  			wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
  				"status_code=%u",
  				data->assoc_reject.status_code);
  		if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
  			sme_event_assoc_reject(wpa_s, data);
  		else {
  			const u8 *bssid = data->assoc_reject.bssid;
  			if (bssid == NULL || is_zero_ether_addr(bssid))
  				bssid = wpa_s->pending_bssid;
  			wpas_connection_failed(wpa_s, bssid);
  			wpa_supplicant_mark_disassoc(wpa_s);
  		}
  		break;
  	case EVENT_AUTH_TIMED_OUT:
  		/* It is possible to get this event from earlier connection */
  		if (wpa_s->current_ssid &&
  		    wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
  			wpa_dbg(wpa_s, MSG_DEBUG,
  				"Ignore AUTH_TIMED_OUT in mesh configuration");
  			break;
  		}
  		if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
  			sme_event_auth_timed_out(wpa_s, data);
  		break;
  	case EVENT_ASSOC_TIMED_OUT:
  		/* It is possible to get this event from earlier connection */
  		if (wpa_s->current_ssid &&
  		    wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
  			wpa_dbg(wpa_s, MSG_DEBUG,
  				"Ignore ASSOC_TIMED_OUT in mesh configuration");
  			break;
  		}
  		if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
  			sme_event_assoc_timed_out(wpa_s, data);
  		break;
  	case EVENT_TX_STATUS:
  		wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
  			" type=%d stype=%d",
  			MAC2STR(data->tx_status.dst),
  			data->tx_status.type, data->tx_status.stype);
  #ifdef CONFIG_AP
  		if (wpa_s->ap_iface == NULL) {
  #ifdef CONFIG_OFFCHANNEL
  			if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
  			    data->tx_status.stype == WLAN_FC_STYPE_ACTION)
  				offchannel_send_action_tx_status(
  					wpa_s, data->tx_status.dst,
  					data->tx_status.data,
  					data->tx_status.data_len,
  					data->tx_status.ack ?
  					OFFCHANNEL_SEND_ACTION_SUCCESS :
  					OFFCHANNEL_SEND_ACTION_NO_ACK);
  #endif /* CONFIG_OFFCHANNEL */
  			break;
  		}
  #endif /* CONFIG_AP */
  #ifdef CONFIG_OFFCHANNEL
  		wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
  			MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
  		/*
  		 * Catch TX status events for Action frames we sent via group
  		 * interface in GO mode.
  		 */
  		if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
  		    data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
  		    os_memcmp(wpa_s->parent->pending_action_dst,
  			      data->tx_status.dst, ETH_ALEN) == 0) {
  			offchannel_send_action_tx_status(
  				wpa_s->parent, data->tx_status.dst,
  				data->tx_status.data,
  				data->tx_status.data_len,
  				data->tx_status.ack ?
  				OFFCHANNEL_SEND_ACTION_SUCCESS :
  				OFFCHANNEL_SEND_ACTION_NO_ACK);
  			break;
  		}
  #endif /* CONFIG_OFFCHANNEL */
  #ifdef CONFIG_AP
  		switch (data->tx_status.type) {
  		case WLAN_FC_TYPE_MGMT:
  			ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
  				      data->tx_status.data_len,
  				      data->tx_status.stype,
  				      data->tx_status.ack);
  			break;
  		case WLAN_FC_TYPE_DATA:
  			ap_tx_status(wpa_s, data->tx_status.dst,
  				     data->tx_status.data,
  				     data->tx_status.data_len,
  				     data->tx_status.ack);
  			break;
  		}
  #endif /* CONFIG_AP */
  		break;
  #ifdef CONFIG_AP
  	case EVENT_EAPOL_TX_STATUS:
  		ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
  				   data->eapol_tx_status.data,
  				   data->eapol_tx_status.data_len,
  				   data->eapol_tx_status.ack);
  		break;
  	case EVENT_DRIVER_CLIENT_POLL_OK:
  		ap_client_poll_ok(wpa_s, data->client_poll.addr);
  		break;
  	case EVENT_RX_FROM_UNKNOWN:
  		if (wpa_s->ap_iface == NULL)
  			break;
  		ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
  				       data->rx_from_unknown.wds);
  		break;
  	case EVENT_CH_SWITCH:
  		if (!data)
  			break;
  		if (!wpa_s->ap_iface) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
  				"event in non-AP mode");
  			break;
  		}
  
  		wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
  				  data->ch_switch.ht_enabled,
  				  data->ch_switch.ch_offset,
  				  data->ch_switch.ch_width,
  				  data->ch_switch.cf1,
  				  data->ch_switch.cf2);
  		break;
  #ifdef NEED_AP_MLME
  	case EVENT_DFS_RADAR_DETECTED:
  		if (data)
  			wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
  		break;
  	case EVENT_DFS_CAC_STARTED:
  		if (data)
  			wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
  		break;
  	case EVENT_DFS_CAC_FINISHED:
  		if (data)
  			wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
  		break;
  	case EVENT_DFS_CAC_ABORTED:
  		if (data)
  			wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
  		break;
  	case EVENT_DFS_NOP_FINISHED:
  		if (data)
  			wpas_event_dfs_cac_nop_finished(wpa_s,
  							&data->dfs_event);
  		break;
  #endif /* NEED_AP_MLME */
  #endif /* CONFIG_AP */
  	case EVENT_RX_MGMT: {
  		u16 fc, stype;
  		const struct ieee80211_mgmt *mgmt;
  
  #ifdef CONFIG_TESTING_OPTIONS
  		if (wpa_s->ext_mgmt_frame_handling) {
  			struct rx_mgmt *rx = &data->rx_mgmt;
  			size_t hex_len = 2 * rx->frame_len + 1;
  			char *hex = os_malloc(hex_len);
  			if (hex) {
  				wpa_snprintf_hex(hex, hex_len,
  						 rx->frame, rx->frame_len);
  				wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
  					rx->freq, rx->datarate, rx->ssi_signal,
  					hex);
  				os_free(hex);
  			}
  			break;
  		}
  #endif /* CONFIG_TESTING_OPTIONS */
  
  		mgmt = (const struct ieee80211_mgmt *)
  			data->rx_mgmt.frame;
  		fc = le_to_host16(mgmt->frame_control);
  		stype = WLAN_FC_GET_STYPE(fc);
  
  #ifdef CONFIG_AP
  		if (wpa_s->ap_iface == NULL) {
  #endif /* CONFIG_AP */
  #ifdef CONFIG_P2P
  			if (stype == WLAN_FC_STYPE_PROBE_REQ &&
  			    data->rx_mgmt.frame_len > 24) {
  				const u8 *src = mgmt->sa;
  				const u8 *ie = mgmt->u.probe_req.variable;
  				size_t ie_len = data->rx_mgmt.frame_len -
  					(mgmt->u.probe_req.variable -
  					 data->rx_mgmt.frame);
  				wpas_p2p_probe_req_rx(
  					wpa_s, src, mgmt->da,
  					mgmt->bssid, ie, ie_len,
  					data->rx_mgmt.ssi_signal);
  				break;
  			}
  #endif /* CONFIG_P2P */
  #ifdef CONFIG_IBSS_RSN
  			if (wpa_s->current_ssid &&
  			    wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
  			    stype == WLAN_FC_STYPE_AUTH &&
  			    data->rx_mgmt.frame_len >= 30) {
  				wpa_supplicant_event_ibss_auth(wpa_s, data);
  				break;
  			}
  #endif /* CONFIG_IBSS_RSN */
  
  			if (stype == WLAN_FC_STYPE_ACTION) {
  				wpas_event_rx_mgmt_action(
  					wpa_s, data->rx_mgmt.frame,
  					data->rx_mgmt.frame_len,
  					data->rx_mgmt.freq,
  					data->rx_mgmt.ssi_signal);
  				break;
  			}
  
  			if (wpa_s->ifmsh) {
  				mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
  				break;
  			}
  
  			wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
  				"management frame in non-AP mode");
  			break;
  #ifdef CONFIG_AP
  		}
  
  		if (stype == WLAN_FC_STYPE_PROBE_REQ &&
  		    data->rx_mgmt.frame_len > 24) {
  			const u8 *ie = mgmt->u.probe_req.variable;
  			size_t ie_len = data->rx_mgmt.frame_len -
  				(mgmt->u.probe_req.variable -
  				 data->rx_mgmt.frame);
  
  			wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
  					 mgmt->bssid, ie, ie_len,
  					 data->rx_mgmt.ssi_signal);
  		}
  
  		ap_mgmt_rx(wpa_s, &data->rx_mgmt);
  #endif /* CONFIG_AP */
  		break;
  		}
  	case EVENT_RX_PROBE_REQ:
  		if (data->rx_probe_req.sa == NULL ||
  		    data->rx_probe_req.ie == NULL)
  			break;
  #ifdef CONFIG_AP
  		if (wpa_s->ap_iface) {
  			hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
  					     data->rx_probe_req.sa,
  					     data->rx_probe_req.da,
  					     data->rx_probe_req.bssid,
  					     data->rx_probe_req.ie,
  					     data->rx_probe_req.ie_len,
  					     data->rx_probe_req.ssi_signal);
  			break;
  		}
  #endif /* CONFIG_AP */
  		wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
  				      data->rx_probe_req.da,
  				      data->rx_probe_req.bssid,
  				      data->rx_probe_req.ie,
  				      data->rx_probe_req.ie_len,
  				      data->rx_probe_req.ssi_signal);
  		break;
  	case EVENT_REMAIN_ON_CHANNEL:
  #ifdef CONFIG_OFFCHANNEL
  		offchannel_remain_on_channel_cb(
  			wpa_s, data->remain_on_channel.freq,
  			data->remain_on_channel.duration);
  #endif /* CONFIG_OFFCHANNEL */
  		wpas_p2p_remain_on_channel_cb(
  			wpa_s, data->remain_on_channel.freq,
  			data->remain_on_channel.duration);
  		break;
  	case EVENT_CANCEL_REMAIN_ON_CHANNEL:
  #ifdef CONFIG_OFFCHANNEL
  		offchannel_cancel_remain_on_channel_cb(
  			wpa_s, data->remain_on_channel.freq);
  #endif /* CONFIG_OFFCHANNEL */
  		wpas_p2p_cancel_remain_on_channel_cb(
  			wpa_s, data->remain_on_channel.freq);
  		break;
  	case EVENT_EAPOL_RX:
  		wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
  					data->eapol_rx.data,
  					data->eapol_rx.data_len);
  		break;
  	case EVENT_SIGNAL_CHANGE:
  		wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
  			"above=%d signal=%d noise=%d txrate=%d",
  			data->signal_change.above_threshold,
  			data->signal_change.current_signal,
  			data->signal_change.current_noise,
  			data->signal_change.current_txrate);
  		wpa_bss_update_level(wpa_s->current_bss,
  				     data->signal_change.current_signal);
  		bgscan_notify_signal_change(
  			wpa_s, data->signal_change.above_threshold,
  			data->signal_change.current_signal,
  			data->signal_change.current_noise,
  			data->signal_change.current_txrate);
  		break;
  	case EVENT_INTERFACE_ENABLED:
  		wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
  		if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
  			wpa_supplicant_update_mac_addr(wpa_s);
  			if (wpa_s->p2p_mgmt) {
  				wpa_supplicant_set_state(wpa_s,
  							 WPA_DISCONNECTED);
  				break;
  			}
  
  #ifdef CONFIG_AP
  			if (!wpa_s->ap_iface) {
  				wpa_supplicant_set_state(wpa_s,
  							 WPA_DISCONNECTED);
  				wpa_s->scan_req = NORMAL_SCAN_REQ;
  				wpa_supplicant_req_scan(wpa_s, 0, 0);
  			} else
  				wpa_supplicant_set_state(wpa_s,
  							 WPA_COMPLETED);
  #else /* CONFIG_AP */
  			wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
  			wpa_supplicant_req_scan(wpa_s, 0, 0);
  #endif /* CONFIG_AP */
  		}
  		break;
  	case EVENT_INTERFACE_DISABLED:
  		wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
  #ifdef CONFIG_P2P
  		if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
  		    (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
  		     wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
  			/*
  			 * Mark interface disabled if this happens to end up not
  			 * being removed as a separate P2P group interface.
  			 */
  			wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
  			/*
  			 * The interface was externally disabled. Remove
  			 * it assuming an external entity will start a
  			 * new session if needed.
  			 */
  			if (wpa_s->current_ssid &&
  			    wpa_s->current_ssid->p2p_group)
  				wpas_p2p_interface_unavailable(wpa_s);
  			else
  				wpas_p2p_disconnect(wpa_s);
  			/*
  			 * wpa_s instance may have been freed, so must not use
  			 * it here anymore.
  			 */
  			break;
  		}
  		if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
  		    p2p_in_progress(wpa_s->global->p2p) > 1) {
  			/* This radio work will be cancelled, so clear P2P
  			 * state as well.
  			 */
  			p2p_stop_find(wpa_s->global->p2p);
  		}
  #endif /* CONFIG_P2P */
  
  		if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
  			/*
  			 * Indicate disconnection to keep ctrl_iface events
  			 * consistent.
  			 */
  			wpa_supplicant_event_disassoc(
  				wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
  		}
  		wpa_supplicant_mark_disassoc(wpa_s);
  		radio_remove_works(wpa_s, NULL, 0);
  
  		wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
  		break;
  	case EVENT_CHANNEL_LIST_CHANGED:
  		wpa_supplicant_update_channel_list(
  			wpa_s, &data->channel_list_changed);
  		break;
  	case EVENT_INTERFACE_UNAVAILABLE:
  		wpas_p2p_interface_unavailable(wpa_s);
  		break;
  	case EVENT_BEST_CHANNEL:
  		wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
  			"(%d %d %d)",
  			data->best_chan.freq_24, data->best_chan.freq_5,
  			data->best_chan.freq_overall);
  		wpa_s->best_24_freq = data->best_chan.freq_24;
  		wpa_s->best_5_freq = data->best_chan.freq_5;
  		wpa_s->best_overall_freq = data->best_chan.freq_overall;
  		wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
  					      data->best_chan.freq_5,
  					      data->best_chan.freq_overall);
  		break;
  	case EVENT_UNPROT_DEAUTH:
  		wpa_supplicant_event_unprot_deauth(wpa_s,
  						   &data->unprot_deauth);
  		break;
  	case EVENT_UNPROT_DISASSOC:
  		wpa_supplicant_event_unprot_disassoc(wpa_s,
  						     &data->unprot_disassoc);
  		break;
  	case EVENT_STATION_LOW_ACK:
  #ifdef CONFIG_AP
  		if (wpa_s->ap_iface && data)
  			hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
  						  data->low_ack.addr);
  #endif /* CONFIG_AP */
  #ifdef CONFIG_TDLS
  		if (data)
  			wpa_tdls_disable_unreachable_link(wpa_s->wpa,
  							  data->low_ack.addr);
  #endif /* CONFIG_TDLS */
  		break;
  	case EVENT_IBSS_PEER_LOST:
  #ifdef CONFIG_IBSS_RSN
  		ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
  #endif /* CONFIG_IBSS_RSN */
  		break;
  	case EVENT_DRIVER_GTK_REKEY:
  		if (os_memcmp(data->driver_gtk_rekey.bssid,
  			      wpa_s->bssid, ETH_ALEN))
  			break;
  		if (!wpa_s->wpa)
  			break;
  		wpa_sm_update_replay_ctr(wpa_s->wpa,
  					 data->driver_gtk_rekey.replay_ctr);
  		break;
  	case EVENT_SCHED_SCAN_STOPPED:
  		wpa_s->pno = 0;
  		wpa_s->sched_scanning = 0;
  		resched = wpa_s->scanning;
  		wpa_supplicant_notify_scanning(wpa_s, 0);
  
  		if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
  			break;
  
  		/*
  		 * Start a new sched scan to continue searching for more SSIDs
  		 * either if timed out or PNO schedule scan is pending.
  		 */
  		if (wpa_s->sched_scan_timed_out) {
  			wpa_supplicant_req_sched_scan(wpa_s);
  		} else if (wpa_s->pno_sched_pending) {
  			wpa_s->pno_sched_pending = 0;
  			wpas_start_pno(wpa_s);
  		} else if (resched) {
  			wpa_supplicant_req_scan(wpa_s, 0, 0);
  		}
  
  		break;
  	case EVENT_WPS_BUTTON_PUSHED:
  #ifdef CONFIG_WPS
  		wpas_wps_start_pbc(wpa_s, NULL, 0);
  #endif /* CONFIG_WPS */
  		break;
  	case EVENT_AVOID_FREQUENCIES:
  		wpa_supplicant_notify_avoid_freq(wpa_s, data);
  		break;
  	case EVENT_CONNECT_FAILED_REASON:
  #ifdef CONFIG_AP
  		if (!wpa_s->ap_iface || !data)
  			break;
  		hostapd_event_connect_failed_reason(
  			wpa_s->ap_iface->bss[0],
  			data->connect_failed_reason.addr,
  			data->connect_failed_reason.code);
  #endif /* CONFIG_AP */
  		break;
  	case EVENT_NEW_PEER_CANDIDATE:
  #ifdef CONFIG_MESH
  		if (!wpa_s->ifmsh || !data)
  			break;
  		wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
  				     data->mesh_peer.ies,
  				     data->mesh_peer.ie_len);
  #endif /* CONFIG_MESH */
  		break;
  	default:
  		wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
  		break;
  	}
  }
  