IFC @ r252763

1 files changed, 861 insertions, 110 deletions

diff --git a/contrib/wpa/wpa_supplicant/sme.c b/contrib/wpa/wpa_supplicant/sme.c
index 5604e97..77ad1d2 100644
--- a/contrib/wpa/wpa_supplicant/sme.c
+++ b/contrib/wpa/wpa_supplicant/sme.c
@@ -2,19 +2,14 @@
  * wpa_supplicant - SME
  * Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
  */
 
 #include "includes.h"
 
 #include "common.h"
+#include "utils/eloop.h"
 #include "common/ieee802_11_defs.h"
 #include "common/ieee802_11_common.h"
 #include "eapol_supp/eapol_supp_sm.h"
@@ -26,14 +21,68 @@
 #include "driver_i.h"
 #include "wpas_glue.h"
 #include "wps_supplicant.h"
+#include "p2p_supplicant.h"
 #include "notify.h"
-#include "blacklist.h"
 #include "bss.h"
 #include "scan.h"
 #include "sme.h"
+#include "hs20_supplicant.h"
 
-void sme_authenticate(struct wpa_supplicant *wpa_s,
-		      struct wpa_bss *bss, struct wpa_ssid *ssid)
+#define SME_AUTH_TIMEOUT 5
+#define SME_ASSOC_TIMEOUT 5
+
+static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
+static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
+static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
+#ifdef CONFIG_IEEE80211W
+static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
+#endif /* CONFIG_IEEE80211W */
+
+
+#ifdef CONFIG_SAE
+
+static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s)
+{
+	struct wpabuf *buf;
+
+	buf = wpabuf_alloc(4 + 2);
+	if (buf == NULL)
+		return NULL;
+
+	wpabuf_put_le16(buf, 1); /* Transaction seq# */
+	wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
+	wpabuf_put_le16(buf, 19); /* Finite Cyclic Group */
+	/* TODO: Anti-Clogging Token (if requested) */
+	/* TODO: Scalar */
+	/* TODO: Element */
+
+	return buf;
+}
+
+
+static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
+{
+	struct wpabuf *buf;
+
+	buf = wpabuf_alloc(4 + 2);
+	if (buf == NULL)
+		return NULL;
+
+	wpabuf_put_le16(buf, 2); /* Transaction seq# */
+	wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
+	wpabuf_put_le16(buf, wpa_s->sme.sae_send_confirm);
+	wpa_s->sme.sae_send_confirm++;
+	/* TODO: Confirm */
+
+	return buf;
+}
+
+#endif /* CONFIG_SAE */
+
+
+static void sme_send_authentication(struct wpa_supplicant *wpa_s,
+				    struct wpa_bss *bss, struct wpa_ssid *ssid,
+				    int start)
 {
 	struct wpa_driver_auth_params params;
 	struct wpa_ssid *old_ssid;
@@ -44,10 +93,13 @@ void sme_authenticate(struct wpa_supplicant *wpa_s,
 	const u8 *md = NULL;
 #endif /* CONFIG_IEEE80211R */
 	int i, bssid_changed;
+	struct wpabuf *resp = NULL;
+	u8 ext_capab[10];
+	int ext_capab_len;
 
 	if (bss == NULL) {
-		wpa_printf(MSG_ERROR, "SME: No scan result available for the "
-			   "network");
+		wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
+			"the network");
 		return;
 	}
 
@@ -60,6 +112,7 @@ void sme_authenticate(struct wpa_supplicant *wpa_s,
 	params.bssid = bss->bssid;
 	params.ssid = bss->ssid;
 	params.ssid_len = bss->ssid_len;
+	params.p2p = ssid->p2p_group;
 
 	if (wpa_s->sme.ssid_len != params.ssid_len ||
 	    os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
@@ -80,13 +133,28 @@ void sme_authenticate(struct wpa_supplicant *wpa_s,
 		}
 	}
 #endif /* IEEE8021X_EAPOL */
-	wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
-		   params.auth_alg);
+	wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
+		params.auth_alg);
 	if (ssid->auth_alg) {
 		params.auth_alg = ssid->auth_alg;
-		wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
-			   params.auth_alg);
+		wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
+			"0x%x", params.auth_alg);
 	}
+#ifdef CONFIG_SAE
+	if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
+		const u8 *rsn;
+		struct wpa_ie_data ied;
+
+		rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
+		if (rsn &&
+		    wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0) {
+			if (wpa_key_mgmt_sae(ied.key_mgmt)) {
+				wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
+				params.auth_alg = WPA_AUTH_ALG_SAE;
+			}
+		}
+	}
+#endif /* CONFIG_SAE */
 
 	for (i = 0; i < NUM_WEP_KEYS; i++) {
 		if (ssid->wep_key_len[i])
@@ -103,13 +171,11 @@ void sme_authenticate(struct wpa_supplicant *wpa_s,
 
 	if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
 	     wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
-	    (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
-			       WPA_KEY_MGMT_FT_IEEE8021X |
-			       WPA_KEY_MGMT_FT_PSK |
-			       WPA_KEY_MGMT_IEEE8021X_SHA256 |
-			       WPA_KEY_MGMT_PSK_SHA256))) {
+	    wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 		int try_opportunistic;
-		try_opportunistic = ssid->proactive_key_caching &&
+		try_opportunistic = (ssid->proactive_key_caching < 0 ?
+				     wpa_s->conf->okc :
+				     ssid->proactive_key_caching) &&
 			(ssid->proto & WPA_PROTO_RSN);
 		if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
 					    wpa_s->current_ssid,
@@ -119,22 +185,27 @@ void sme_authenticate(struct wpa_supplicant *wpa_s,
 		if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
 					      wpa_s->sme.assoc_req_ie,
 					      &wpa_s->sme.assoc_req_ie_len)) {
-			wpa_printf(MSG_WARNING, "SME: Failed to set WPA key "
-				   "management and encryption suites");
+			wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
+				"key management and encryption suites");
 			return;
 		}
-	} else if (ssid->key_mgmt &
-		   (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
-		    WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
-		    WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
-		    WPA_KEY_MGMT_IEEE8021X_SHA256)) {
+	} else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
+		   wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
+		/*
+		 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
+		 * use non-WPA since the scan results did not indicate that the
+		 * AP is using WPA or WPA2.
+		 */
+		wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
+		wpa_s->sme.assoc_req_ie_len = 0;
+	} else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 		wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
 		if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 					      wpa_s->sme.assoc_req_ie,
 					      &wpa_s->sme.assoc_req_ie_len)) {
-			wpa_printf(MSG_WARNING, "SME: Failed to set WPA key "
-				   "management and encryption suites (no scan "
-				   "results)");
+			wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
+				"key management and encryption suites (no "
+				"scan results)");
 			return;
 		}
 #ifdef CONFIG_WPS
@@ -166,8 +237,7 @@ void sme_authenticate(struct wpa_supplicant *wpa_s,
 		wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
 	}
 
-	if (md && ssid->key_mgmt & (WPA_KEY_MGMT_FT_PSK |
-				    WPA_KEY_MGMT_FT_IEEE8021X)) {
+	if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
 		if (wpa_s->sme.assoc_req_ie_len + 5 <
 		    sizeof(wpa_s->sme.assoc_req_ie)) {
 			struct rsn_mdie *mdie;
@@ -185,8 +255,8 @@ void sme_authenticate(struct wpa_supplicant *wpa_s,
 		if (wpa_s->sme.ft_used &&
 		    os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
 		    wpa_sm_has_ptk(wpa_s->wpa)) {
-			wpa_printf(MSG_DEBUG, "SME: Trying to use FT "
-				   "over-the-air");
+			wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
+				"over-the-air");
 			params.auth_alg = WPA_AUTH_ALG_FT;
 			params.ie = wpa_s->sme.ft_ies;
 			params.ie_len = wpa_s->sme.ft_ies_len;
@@ -195,23 +265,81 @@ void sme_authenticate(struct wpa_supplicant *wpa_s,
 #endif /* CONFIG_IEEE80211R */
 
 #ifdef CONFIG_IEEE80211W
-	wpa_s->sme.mfp = ssid->ieee80211w;
-	if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
+	wpa_s->sme.mfp = ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
+		wpa_s->conf->pmf : ssid->ieee80211w;
+	if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
 		const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 		struct wpa_ie_data _ie;
 		if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
 		    _ie.capabilities &
 		    (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
-			wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
-				   "require MFP");
+			wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
+				"MFP: require MFP");
 			wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
 		}
 	}
 #endif /* CONFIG_IEEE80211W */
 
+#ifdef CONFIG_P2P
+	if (wpa_s->global->p2p) {
+		u8 *pos;
+		size_t len;
+		int res;
+		pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
+		len = sizeof(wpa_s->sme.assoc_req_ie) -
+			wpa_s->sme.assoc_req_ie_len;
+		res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
+					    ssid->p2p_group);
+		if (res >= 0)
+			wpa_s->sme.assoc_req_ie_len += res;
+	}
+#endif /* CONFIG_P2P */
+
+#ifdef CONFIG_HS20
+	if (wpa_s->conf->hs20) {
+		struct wpabuf *hs20;
+		hs20 = wpabuf_alloc(20);
+		if (hs20) {
+			wpas_hs20_add_indication(hs20);
+			os_memcpy(wpa_s->sme.assoc_req_ie +
+				  wpa_s->sme.assoc_req_ie_len,
+				  wpabuf_head(hs20), wpabuf_len(hs20));
+			wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
+			wpabuf_free(hs20);
+		}
+	}
+#endif /* CONFIG_HS20 */
+
+	ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab);
+	if (ext_capab_len > 0) {
+		u8 *pos = wpa_s->sme.assoc_req_ie;
+		if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
+			pos += 2 + pos[1];
+		os_memmove(pos + ext_capab_len, pos,
+			   wpa_s->sme.assoc_req_ie_len -
+			   (pos - wpa_s->sme.assoc_req_ie));
+		wpa_s->sme.assoc_req_ie_len += ext_capab_len;
+		os_memcpy(pos, ext_capab, ext_capab_len);
+	}
+
+#ifdef CONFIG_SAE
+	if (params.auth_alg == WPA_AUTH_ALG_SAE) {
+		if (start)
+			resp = sme_auth_build_sae_commit(wpa_s);
+		else
+			resp = sme_auth_build_sae_confirm(wpa_s);
+		if (resp == NULL)
+			return;
+		params.sae_data = wpabuf_head(resp);
+		params.sae_data_len = wpabuf_len(resp);
+		wpa_s->sme.sae_state = start ? SME_SAE_COMMIT : SME_SAE_CONFIRM;
+	}
+#endif /* CONFIG_SAE */
+
+	wpa_supplicant_cancel_sched_scan(wpa_s);
 	wpa_supplicant_cancel_scan(wpa_s);
 
-	wpa_msg(wpa_s, MSG_INFO, "Trying to authenticate with " MACSTR
+	wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
 		" (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
 		wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
 
@@ -226,19 +354,104 @@ void sme_authenticate(struct wpa_supplicant *wpa_s,
 
 	wpa_s->sme.auth_alg = params.auth_alg;
 	if (wpa_drv_authenticate(wpa_s, &params) < 0) {
-		wpa_msg(wpa_s, MSG_INFO, "Authentication request to the "
+		wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
 			"driver failed");
-		wpa_supplicant_req_scan(wpa_s, 1, 0);
+		wpas_connection_failed(wpa_s, bss->bssid);
+		wpa_supplicant_mark_disassoc(wpa_s);
+		wpabuf_free(resp);
 		return;
 	}
 
-	/* TODO: add timeout on authentication */
+	eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
+			       NULL);
 
 	/*
 	 * Association will be started based on the authentication event from
 	 * the driver.
 	 */
+
+	wpabuf_free(resp);
+}
+
+
+void sme_authenticate(struct wpa_supplicant *wpa_s,
+		      struct wpa_bss *bss, struct wpa_ssid *ssid)
+{
+	wpa_s->sme.sae_state = SME_SAE_INIT;
+	wpa_s->sme.sae_send_confirm = 0;
+	sme_send_authentication(wpa_s, bss, ssid, 1);
+}
+
+
+#ifdef CONFIG_SAE
+
+static int sme_sae_process_commit(struct wpa_supplicant *wpa_s, const u8 *data,
+				  size_t len)
+{
+	/* Check Finite Cyclic Group */
+	if (len < 2)
+		return -1;
+	if (WPA_GET_LE16(data) != 19) {
+		wpa_printf(MSG_DEBUG, "SAE: Unsupported Finite Cyclic Group %u",
+			   WPA_GET_LE16(data));
+		return -1;
+	}
+
+	/* TODO */
+
+	return 0;
+}
+
+
+static int sme_sae_process_confirm(struct wpa_supplicant *wpa_s, const u8 *data,
+				   size_t len)
+{
+	u16 rc;
+
+	if (len < 2)
+		return -1;
+	rc = WPA_GET_LE16(data);
+	wpa_printf(MSG_DEBUG, "SAE: peer-send-confirm %u", rc);
+
+	/* TODO */
+	return 0;
+}
+
+
+static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
+			u16 status_code, const u8 *data, size_t len)
+{
+	wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
+		"status code %u", auth_transaction, status_code);
+	wpa_hexdump(MSG_DEBUG, "SME: SAE fields", data, len);
+
+	if (status_code != WLAN_STATUS_SUCCESS)
+		return -1;
+
+	if (auth_transaction == 1) {
+		wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
+		if (wpa_s->current_bss == NULL ||
+		    wpa_s->current_ssid == NULL)
+			return -1;
+		if (wpa_s->sme.sae_state != SME_SAE_COMMIT)
+			return -1;
+		if (sme_sae_process_commit(wpa_s, data, len) < 0)
+			return -1;
+		sme_send_authentication(wpa_s, wpa_s->current_bss,
+					wpa_s->current_ssid, 0);
+		return 0;
+	} else if (auth_transaction == 2) {
+		wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
+		if (wpa_s->sme.sae_state != SME_SAE_CONFIRM)
+			return -1;
+		if (sme_sae_process_confirm(wpa_s, data, len) < 0)
+			return -1;
+		return 1;
+	}
+
+	return -1;
 }
+#endif /* CONFIG_SAE */
 
 
 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
@@ -246,46 +459,67 @@ void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
 	struct wpa_ssid *ssid = wpa_s->current_ssid;
 
 	if (ssid == NULL) {
-		wpa_printf(MSG_DEBUG, "SME: Ignore authentication event when "
-			   "network is not selected");
+		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
+			"when network is not selected");
 		return;
 	}
 
 	if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
-		wpa_printf(MSG_DEBUG, "SME: Ignore authentication event when "
-			   "not in authenticating state");
+		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
+			"when not in authenticating state");
 		return;
 	}
 
 	if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
-		wpa_printf(MSG_DEBUG, "SME: Ignore authentication with "
-			   "unexpected peer " MACSTR,
-			   MAC2STR(data->auth.peer));
+		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
+			"unexpected peer " MACSTR,
+			MAC2STR(data->auth.peer));
 		return;
 	}
 
-	wpa_printf(MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
-		   " auth_type=%d status_code=%d",
-		   MAC2STR(data->auth.peer), data->auth.auth_type,
-		   data->auth.status_code);
+	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
+		" auth_type=%d auth_transaction=%d status_code=%d",
+		MAC2STR(data->auth.peer), data->auth.auth_type,
+		data->auth.auth_transaction, data->auth.status_code);
 	wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
 		    data->auth.ies, data->auth.ies_len);
 
+	eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
+
+#ifdef CONFIG_SAE
+	if (data->auth.auth_type == WLAN_AUTH_SAE) {
+		int res;
+		res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
+				   data->auth.status_code, data->auth.ies,
+				   data->auth.ies_len);
+		if (res < 0) {
+			wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+			wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
+
+		}
+		if (res != 1)
+			return;
+	}
+#endif /* CONFIG_SAE */
+
 	if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
-		wpa_printf(MSG_DEBUG, "SME: Authentication failed (status "
-			   "code %d)", data->auth.status_code);
+		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status "
+			"code %d)", data->auth.status_code);
 
 		if (data->auth.status_code !=
 		    WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
 		    wpa_s->sme.auth_alg == data->auth.auth_type ||
-		    wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP)
+		    wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
+			wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+			wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 			return;
+		}
 
 		switch (data->auth.auth_type) {
 		case WLAN_AUTH_OPEN:
 			wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 
-			wpa_printf(MSG_DEBUG, "SME: Trying SHARED auth");
+			wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
 			wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
 						 wpa_s->current_ssid);
 			return;
@@ -293,7 +527,7 @@ void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
 		case WLAN_AUTH_SHARED_KEY:
 			wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
 
-			wpa_printf(MSG_DEBUG, "SME: Trying LEAP auth");
+			wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
 			wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
 						 wpa_s->current_ssid);
 			return;
@@ -324,15 +558,30 @@ void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
 {
 	struct wpa_driver_associate_params params;
 	struct ieee802_11_elems elems;
+#ifdef CONFIG_HT_OVERRIDES
+	struct ieee80211_ht_capabilities htcaps;
+	struct ieee80211_ht_capabilities htcaps_mask;
+#endif /* CONFIG_HT_OVERRIDES */
 
 	os_memset(&params, 0, sizeof(params));
 	params.bssid = bssid;
 	params.ssid = wpa_s->sme.ssid;
 	params.ssid_len = wpa_s->sme.ssid_len;
 	params.freq = wpa_s->sme.freq;
+	params.bg_scan_period = wpa_s->current_ssid ?
+		wpa_s->current_ssid->bg_scan_period : -1;
 	params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
 		wpa_s->sme.assoc_req_ie : NULL;
 	params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
+	params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
+	params.group_suite = cipher_suite2driver(wpa_s->group_cipher);
+#ifdef CONFIG_HT_OVERRIDES
+	os_memset(&htcaps, 0, sizeof(htcaps));
+	os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
+	params.htcaps = (u8 *) &htcaps;
+	params.htcaps_mask = (u8 *) &htcaps_mask;
+	wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
+#endif /* CONFIG_HT_OVERRIDES */
 #ifdef CONFIG_IEEE80211R
 	if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
 		params.wpa_ie = wpa_s->sme.ft_ies;
@@ -354,26 +603,38 @@ void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
 	if (params.wpa_ie == NULL ||
 	    ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
 	    < 0) {
-		wpa_printf(MSG_DEBUG, "SME: Could not parse own IEs?!");
+		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
 		os_memset(&elems, 0, sizeof(elems));
 	}
-	if (elems.rsn_ie)
+	if (elems.rsn_ie) {
+		params.wpa_proto = WPA_PROTO_RSN;
 		wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
 					elems.rsn_ie_len + 2);
-	else if (elems.wpa_ie)
+	} else if (elems.wpa_ie) {
+		params.wpa_proto = WPA_PROTO_WPA;
 		wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
 					elems.wpa_ie_len + 2);
-	else
+	} else
 		wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
+	if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
+		params.p2p = 1;
+
+	if (wpa_s->parent->set_sta_uapsd)
+		params.uapsd = wpa_s->parent->sta_uapsd;
+	else
+		params.uapsd = -1;
 
 	if (wpa_drv_associate(wpa_s, &params) < 0) {
-		wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
-			"failed");
-		wpa_supplicant_req_scan(wpa_s, 5, 0);
+		wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
+			"driver failed");
+		wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+		wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
+		os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 		return;
 	}
 
-	/* TODO: add timeout on association */
+	eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
+			       NULL);
 }
 
 
@@ -381,7 +642,7 @@ int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
 		      const u8 *ies, size_t ies_len)
 {
 	if (md == NULL || ies == NULL) {
-		wpa_printf(MSG_DEBUG, "SME: Remove mobility domain");
+		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
 		os_free(wpa_s->sme.ft_ies);
 		wpa_s->sme.ft_ies = NULL;
 		wpa_s->sme.ft_ies_len = 0;
@@ -401,90 +662,580 @@ int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
 }
 
 
-void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
-			    union wpa_event_data *data)
+static void sme_deauth(struct wpa_supplicant *wpa_s)
 {
 	int bssid_changed;
-	int timeout = 5000;
-
-	wpa_printf(MSG_DEBUG, "SME: Association with " MACSTR " failed: "
-		   "status code %d", MAC2STR(wpa_s->pending_bssid),
-		   data->assoc_reject.status_code);
 
 	bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 
-	/*
-	 * For now, unconditionally terminate the previous authentication. In
-	 * theory, this should not be needed, but mac80211 gets quite confused
-	 * if the authentication is left pending.. Some roaming cases might
-	 * benefit from using the previous authentication, so this could be
-	 * optimized in the future.
-	 */
 	if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
 				   WLAN_REASON_DEAUTH_LEAVING) < 0) {
-		wpa_msg(wpa_s, MSG_INFO,
-			"Deauth request to the driver failed");
+		wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
+			"failed");
 	}
 	wpa_s->sme.prev_bssid_set = 0;
 
-	if (wpa_blacklist_add(wpa_s, wpa_s->pending_bssid) == 0) {
-		struct wpa_blacklist *b;
-		b = wpa_blacklist_get(wpa_s, wpa_s->pending_bssid);
-		if (b && b->count < 3) {
-			/*
-			 * Speed up next attempt if there could be other APs
-			 * that could accept association.
-			 */
-			timeout = 100;
-		}
-	}
+	wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 	wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 	os_memset(wpa_s->bssid, 0, ETH_ALEN);
 	os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 	if (bssid_changed)
 		wpas_notify_bssid_changed(wpa_s);
+}
+
+
+void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
+			    union wpa_event_data *data)
+{
+	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
+		"status code %d", MAC2STR(wpa_s->pending_bssid),
+		data->assoc_reject.status_code);
+
+	eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
 
 	/*
-	 * TODO: if more than one possible AP is available in scan results,
-	 * could try the other ones before requesting a new scan.
+	 * For now, unconditionally terminate the previous authentication. In
+	 * theory, this should not be needed, but mac80211 gets quite confused
+	 * if the authentication is left pending.. Some roaming cases might
+	 * benefit from using the previous authentication, so this could be
+	 * optimized in the future.
 	 */
-	wpa_supplicant_req_scan(wpa_s, timeout / 1000,
-				1000 * (timeout % 1000));
+	sme_deauth(wpa_s);
 }
 
 
 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
 			      union wpa_event_data *data)
 {
-	wpa_printf(MSG_DEBUG, "SME: Authentication timed out");
-	wpa_supplicant_req_scan(wpa_s, 5, 0);
+	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
+	wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+	wpa_supplicant_mark_disassoc(wpa_s);
 }
 
 
 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
 			       union wpa_event_data *data)
 {
-	wpa_printf(MSG_DEBUG, "SME: Association timed out");
+	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
+	wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 	wpa_supplicant_mark_disassoc(wpa_s);
-	wpa_supplicant_req_scan(wpa_s, 5, 0);
 }
 
 
 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
 			union wpa_event_data *data)
 {
-	wpa_printf(MSG_DEBUG, "SME: Disassociation event received");
-	if (wpa_s->sme.prev_bssid_set &&
-	    !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)) {
+	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
+	if (wpa_s->sme.prev_bssid_set) {
 		/*
 		 * cfg80211/mac80211 can get into somewhat confused state if
 		 * the AP only disassociates us and leaves us in authenticated
 		 * state. For now, force the state to be cleared to avoid
 		 * confusing errors if we try to associate with the AP again.
 		 */
-		wpa_printf(MSG_DEBUG, "SME: Deauthenticate to clear driver "
-			   "state");
+		wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
+			"driver state");
 		wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
 				       WLAN_REASON_DEAUTH_LEAVING);
 	}
 }
+
+
+static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
+{
+	struct wpa_supplicant *wpa_s = eloop_ctx;
+	if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
+		wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
+		sme_deauth(wpa_s);
+	}
+}
+
+
+static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
+{
+	struct wpa_supplicant *wpa_s = eloop_ctx;
+	if (wpa_s->wpa_state == WPA_ASSOCIATING) {
+		wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
+		sme_deauth(wpa_s);
+	}
+}
+
+
+void sme_state_changed(struct wpa_supplicant *wpa_s)
+{
+	/* Make sure timers are cleaned up appropriately. */
+	if (wpa_s->wpa_state != WPA_ASSOCIATING)
+		eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
+	if (wpa_s->wpa_state != WPA_AUTHENTICATING)
+		eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
+}
+
+
+void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
+				       const u8 *prev_pending_bssid)
+{
+	/*
+	 * mac80211-workaround to force deauth on failed auth cmd,
+	 * requires us to remain in authenticating state to allow the
+	 * second authentication attempt to be continued properly.
+	 */
+	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
+		"to proceed after disconnection event");
+	wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
+	os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
+
+	/*
+	 * Re-arm authentication timer in case auth fails for whatever reason.
+	 */
+	eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
+	eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
+			       NULL);
+}
+
+
+void sme_deinit(struct wpa_supplicant *wpa_s)
+{
+	os_free(wpa_s->sme.ft_ies);
+	wpa_s->sme.ft_ies = NULL;
+	wpa_s->sme.ft_ies_len = 0;
+#ifdef CONFIG_IEEE80211W
+	sme_stop_sa_query(wpa_s);
+#endif /* CONFIG_IEEE80211W */
+
+	eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
+	eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
+	eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
+}
+
+
+static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
+				   const u8 *chan_list, u8 num_channels,
+				   u8 num_intol)
+{
+	struct ieee80211_2040_bss_coex_ie *bc_ie;
+	struct ieee80211_2040_intol_chan_report *ic_report;
+	struct wpabuf *buf;
+
+	wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR,
+		   MAC2STR(wpa_s->bssid));
+
+	buf = wpabuf_alloc(2 + /* action.category + action_code */
+			   sizeof(struct ieee80211_2040_bss_coex_ie) +
+			   sizeof(struct ieee80211_2040_intol_chan_report) +
+			   num_channels);
+	if (buf == NULL)
+		return;
+
+	wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
+	wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
+
+	bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
+	bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
+	bc_ie->length = 1;
+	if (num_intol)
+		bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
+
+	if (num_channels > 0) {
+		ic_report = wpabuf_put(buf, sizeof(*ic_report));
+		ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
+		ic_report->length = num_channels + 1;
+		ic_report->op_class = 0;
+		os_memcpy(wpabuf_put(buf, num_channels), chan_list,
+			  num_channels);
+	}
+
+	if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
+				wpa_s->own_addr, wpa_s->bssid,
+				wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
+		wpa_msg(wpa_s, MSG_INFO,
+			"SME: Failed to send 20/40 BSS Coexistence frame");
+	}
+
+	wpabuf_free(buf);
+}
+
+
+/**
+ * enum wpas_band - Frequency band
+ * @WPAS_BAND_2GHZ: 2.4 GHz ISM band
+ * @WPAS_BAND_5GHZ: around 5 GHz band (4.9 - 5.7 GHz)
+ */
+enum wpas_band {
+	WPAS_BAND_2GHZ,
+	WPAS_BAND_5GHZ,
+	WPAS_BAND_INVALID
+};
+
+/**
+ * freq_to_channel - Convert frequency into channel info
+ * @channel: Buffer for returning channel number
+ * Returns: Band (2 or 5 GHz)
+ */
+static enum wpas_band freq_to_channel(int freq, u8 *channel)
+{
+	enum wpas_band band = (freq <= 2484) ? WPAS_BAND_2GHZ : WPAS_BAND_5GHZ;
+	u8 chan = 0;
+
+	if (freq >= 2412 && freq <= 2472)
+		chan = (freq - 2407) / 5;
+	else if (freq == 2484)
+		chan = 14;
+	else if (freq >= 5180 && freq <= 5805)
+		chan = (freq - 5000) / 5;
+
+	*channel = chan;
+	return band;
+}
+
+
+int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
+{
+	struct wpa_bss *bss;
+	const u8 *ie;
+	u16 ht_cap;
+	u8 chan_list[P2P_MAX_CHANNELS], channel;
+	u8 num_channels = 0, num_intol = 0, i;
+
+	if (!wpa_s->sme.sched_obss_scan)
+		return 0;
+
+	wpa_s->sme.sched_obss_scan = 0;
+	if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
+		return 1;
+
+	/*
+	 * Check whether AP uses regulatory triplet or channel triplet in
+	 * country info. Right now the operating class of the BSS channel
+	 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
+	 * based on the assumption that operating class triplet is not used in
+	 * beacon frame. If the First Channel Number/Operating Extension
+	 * Identifier octet has a positive integer value of 201 or greater,
+	 * then its operating class triplet.
+	 *
+	 * TODO: If Supported Operating Classes element is present in beacon
+	 * frame, have to lookup operating class in Annex E and fill them in
+	 * 2040 coex frame.
+	 */
+	ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
+	if (ie && (ie[1] >= 6) && (ie[5] >= 201))
+		return 1;
+
+	os_memset(chan_list, 0, sizeof(chan_list));
+
+	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
+		/* Skip other band bss */
+		if (freq_to_channel(bss->freq, &channel) != WPAS_BAND_2GHZ)
+			continue;
+
+		ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
+		ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
+
+		if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
+			/* Check whether the channel is already considered */
+			for (i = 0; i < num_channels; i++) {
+				if (channel == chan_list[i])
+					break;
+			}
+			if (i != num_channels)
+				continue;
+
+			if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
+				num_intol++;
+
+			chan_list[num_channels++] = channel;
+		}
+	}
+
+	sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
+	return 1;
+}
+
+
+static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
+					  u16 num_modes,
+					  enum hostapd_hw_mode mode)
+{
+	u16 i;
+
+	for (i = 0; i < num_modes; i++) {
+		if (modes[i].mode == mode)
+			return &modes[i];
+	}
+
+	return NULL;
+}
+
+
+static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s,
+					enum hostapd_hw_mode band,
+					struct wpa_driver_scan_params *params)
+{
+	/* Include only supported channels for the specified band */
+	struct hostapd_hw_modes *mode;
+	int count, i;
+
+	mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band);
+	if (mode == NULL) {
+		/* No channels supported in this band - use empty list */
+		params->freqs = os_zalloc(sizeof(int));
+		return;
+	}
+
+	params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
+	if (params->freqs == NULL)
+		return;
+	for (count = 0, i = 0; i < mode->num_channels; i++) {
+		if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
+			continue;
+		params->freqs[count++] = mode->channels[i].freq;
+	}
+}
+
+
+static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
+{
+	struct wpa_supplicant *wpa_s = eloop_ctx;
+	struct wpa_driver_scan_params params;
+
+	if (!wpa_s->current_bss) {
+		wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
+		return;
+	}
+
+	os_memset(&params, 0, sizeof(params));
+	wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, &params);
+	wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
+
+	if (wpa_supplicant_trigger_scan(wpa_s, &params))
+		wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
+	else
+		wpa_s->sme.sched_obss_scan = 1;
+	os_free(params.freqs);
+
+	eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
+			       sme_obss_scan_timeout, wpa_s, NULL);
+}
+
+
+void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
+{
+	const u8 *ie;
+	struct wpa_bss *bss = wpa_s->current_bss;
+	struct wpa_ssid *ssid = wpa_s->current_ssid;
+	struct hostapd_hw_modes *hw_mode = NULL;
+	int i;
+
+	eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
+	wpa_s->sme.sched_obss_scan = 0;
+	if (!enable)
+		return;
+
+	/*
+	 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
+	 * or it expects OBSS scan to be performed by wpa_supplicant.
+	 */
+	if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
+	      (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
+	    ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
+		return;
+
+	if (!wpa_s->hw.modes)
+		return;
+
+	/* only HT caps in 11g mode are relevant */
+	for (i = 0; i < wpa_s->hw.num_modes; i++) {
+		hw_mode = &wpa_s->hw.modes[i];
+		if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
+			break;
+	}
+
+	/* Driver does not support HT40 for 11g or doesn't have 11g. */
+	if (i == wpa_s->hw.num_modes || !hw_mode ||
+	    !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
+		return;
+
+	if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
+		return; /* Not associated on 2.4 GHz band */
+
+	/* Check whether AP supports HT40 */
+	ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
+	if (!ie || ie[1] < 2 ||
+	    !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
+		return; /* AP does not support HT40 */
+
+	ie = wpa_bss_get_ie(wpa_s->current_bss,
+			    WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
+	if (!ie || ie[1] < 14)
+		return; /* AP does not request OBSS scans */
+
+	wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
+	if (wpa_s->sme.obss_scan_int < 10) {
+		wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
+			   "replaced with the minimum 10 sec",
+			   wpa_s->sme.obss_scan_int);
+		wpa_s->sme.obss_scan_int = 10;
+	}
+	wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
+		   wpa_s->sme.obss_scan_int);
+	eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
+			       sme_obss_scan_timeout, wpa_s, NULL);
+}
+
+
+#ifdef CONFIG_IEEE80211W
+
+static const unsigned int sa_query_max_timeout = 1000;
+static const unsigned int sa_query_retry_timeout = 201;
+
+static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
+{
+	u32 tu;
+	struct os_time now, passed;
+	os_get_time(&now);
+	os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed);
+	tu = (passed.sec * 1000000 + passed.usec) / 1024;
+	if (sa_query_max_timeout < tu) {
+		wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
+		sme_stop_sa_query(wpa_s);
+		wpa_supplicant_deauthenticate(
+			wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
+		return 1;
+	}
+
+	return 0;
+}
+
+
+static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
+				  const u8 *trans_id)
+{
+	u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
+	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
+		MACSTR, MAC2STR(wpa_s->bssid));
+	wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
+		    trans_id, WLAN_SA_QUERY_TR_ID_LEN);
+	req[0] = WLAN_ACTION_SA_QUERY;
+	req[1] = WLAN_SA_QUERY_REQUEST;
+	os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
+	if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
+				wpa_s->own_addr, wpa_s->bssid,
+				req, sizeof(req), 0) < 0)
+		wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
+			"Request");
+}
+
+
+static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
+{
+	struct wpa_supplicant *wpa_s = eloop_ctx;
+	unsigned int timeout, sec, usec;
+	u8 *trans_id, *nbuf;
+
+	if (wpa_s->sme.sa_query_count > 0 &&
+	    sme_check_sa_query_timeout(wpa_s))
+		return;
+
+	nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
+				wpa_s->sme.sa_query_count + 1,
+				WLAN_SA_QUERY_TR_ID_LEN);
+	if (nbuf == NULL)
+		return;
+	if (wpa_s->sme.sa_query_count == 0) {
+		/* Starting a new SA Query procedure */
+		os_get_time(&wpa_s->sme.sa_query_start);
+	}
+	trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
+	wpa_s->sme.sa_query_trans_id = nbuf;
+	wpa_s->sme.sa_query_count++;
+
+	os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
+
+	timeout = sa_query_retry_timeout;
+	sec = ((timeout / 1000) * 1024) / 1000;
+	usec = (timeout % 1000) * 1024;
+	eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
+
+	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
+		wpa_s->sme.sa_query_count);
+
+	sme_send_sa_query_req(wpa_s, trans_id);
+}
+
+
+static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
+{
+	sme_sa_query_timer(wpa_s, NULL);
+}
+
+
+static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
+{
+	eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
+	os_free(wpa_s->sme.sa_query_trans_id);
+	wpa_s->sme.sa_query_trans_id = NULL;
+	wpa_s->sme.sa_query_count = 0;
+}
+
+
+void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
+				 const u8 *da, u16 reason_code)
+{
+	struct wpa_ssid *ssid;
+
+	if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
+		return;
+	if (wpa_s->wpa_state != WPA_COMPLETED)
+		return;
+	ssid = wpa_s->current_ssid;
+	if (ssid == NULL ||
+	    (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
+	     wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION)
+		return;
+	if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
+		return;
+	if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
+	    reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
+		return;
+	if (wpa_s->sme.sa_query_count > 0)
+		return;
+
+	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
+		"possible AP/STA state mismatch - trigger SA Query");
+	sme_start_sa_query(wpa_s);
+}
+
+
+void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
+		     const u8 *data, size_t len)
+{
+	int i;
+
+	if (wpa_s->sme.sa_query_trans_id == NULL ||
+	    len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
+	    data[0] != WLAN_SA_QUERY_RESPONSE)
+		return;
+	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
+		MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
+
+	if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
+		return;
+
+	for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
+		if (os_memcmp(wpa_s->sme.sa_query_trans_id +
+			      i * WLAN_SA_QUERY_TR_ID_LEN,
+			      data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
+			break;
+	}
+
+	if (i >= wpa_s->sme.sa_query_count) {
+		wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
+			"transaction identifier found");
+		return;
+	}
+
+	wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
+		"from " MACSTR, MAC2STR(sa));
+	sme_stop_sa_query(wpa_s);
+}
+
+#endif /* CONFIG_IEEE80211W */