wpa_supplicant: Initial Revision 0.8.X
Based on:
commit 0725cc7b7efc434910e89865c42eda7ce61bbf08
Author: Jouni Malinen <j@w1.fi>
Date: Thu Apr 21 20:41:01 2011 +0300
Enable CONFIG_DRIVER_NL80211=y in the default configuration
nl80211 should be preferred over WEXT with any recent Linux
kernel version.
Change-Id: I26aec5afbbd4f4a1f5fd900912545b6f5050de64
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/wpa_supplicant/sme.c b/wpa_supplicant/sme.c
new file mode 100644
index 0000000..325ffc5
--- /dev/null
+++ b/wpa_supplicant/sme.c
@@ -0,0 +1,748 @@
+/*
+ * 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.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "utils/eloop.h"
+#include "common/ieee802_11_defs.h"
+#include "common/ieee802_11_common.h"
+#include "eapol_supp/eapol_supp_sm.h"
+#include "common/wpa_common.h"
+#include "rsn_supp/wpa.h"
+#include "rsn_supp/pmksa_cache.h"
+#include "config.h"
+#include "wpa_supplicant_i.h"
+#include "driver_i.h"
+#include "wpas_glue.h"
+#include "wps_supplicant.h"
+#include "p2p_supplicant.h"
+#include "notify.h"
+#include "blacklist.h"
+#include "bss.h"
+#include "scan.h"
+#include "sme.h"
+
+#define SME_AUTH_TIMEOUT 5
+#define SME_ASSOC_TIMEOUT 5
+
+static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
+static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
+#ifdef CONFIG_IEEE80211W
+static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
+#endif /* CONFIG_IEEE80211W */
+
+
+void sme_authenticate(struct wpa_supplicant *wpa_s,
+ struct wpa_bss *bss, struct wpa_ssid *ssid)
+{
+ struct wpa_driver_auth_params params;
+ struct wpa_ssid *old_ssid;
+#ifdef CONFIG_IEEE80211R
+ const u8 *ie;
+#endif /* CONFIG_IEEE80211R */
+#ifdef CONFIG_IEEE80211R
+ const u8 *md = NULL;
+#endif /* CONFIG_IEEE80211R */
+ int i, bssid_changed;
+
+ if (bss == NULL) {
+ wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
+ "the network");
+ return;
+ }
+
+ wpa_s->current_bss = bss;
+
+ os_memset(¶ms, 0, sizeof(params));
+ wpa_s->reassociate = 0;
+
+ params.freq = bss->freq;
+ params.bssid = bss->bssid;
+ params.ssid = bss->ssid;
+ params.ssid_len = bss->ssid_len;
+
+ if (wpa_s->sme.ssid_len != params.ssid_len ||
+ os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
+ wpa_s->sme.prev_bssid_set = 0;
+
+ wpa_s->sme.freq = params.freq;
+ os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
+ wpa_s->sme.ssid_len = params.ssid_len;
+
+ params.auth_alg = WPA_AUTH_ALG_OPEN;
+#ifdef IEEE8021X_EAPOL
+ if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
+ if (ssid->leap) {
+ if (ssid->non_leap == 0)
+ params.auth_alg = WPA_AUTH_ALG_LEAP;
+ else
+ params.auth_alg |= WPA_AUTH_ALG_LEAP;
+ }
+ }
+#endif /* IEEE8021X_EAPOL */
+ wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
+ params.auth_alg);
+ if (ssid->auth_alg) {
+ params.auth_alg = ssid->auth_alg;
+ wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
+ "0x%x", params.auth_alg);
+ }
+
+ for (i = 0; i < NUM_WEP_KEYS; i++) {
+ if (ssid->wep_key_len[i])
+ params.wep_key[i] = ssid->wep_key[i];
+ params.wep_key_len[i] = ssid->wep_key_len[i];
+ }
+ params.wep_tx_keyidx = ssid->wep_tx_keyidx;
+
+ bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
+ os_memset(wpa_s->bssid, 0, ETH_ALEN);
+ os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
+ if (bssid_changed)
+ wpas_notify_bssid_changed(wpa_s);
+
+ if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
+ wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
+ (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))) {
+ int try_opportunistic;
+ try_opportunistic = ssid->proactive_key_caching &&
+ (ssid->proto & WPA_PROTO_RSN);
+ if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
+ wpa_s->current_ssid,
+ try_opportunistic) == 0)
+ eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
+ wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
+ if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
+ wpa_s->sme.assoc_req_ie,
+ &wpa_s->sme.assoc_req_ie_len)) {
+ wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
+ "key management and encryption suites");
+ 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)) {
+ wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
+ if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
+ wpa_s->sme.assoc_req_ie,
+ &wpa_s->sme.assoc_req_ie_len)) {
+ wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
+ "key management and encryption suites (no "
+ "scan results)");
+ return;
+ }
+#ifdef CONFIG_WPS
+ } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
+ struct wpabuf *wps_ie;
+ wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
+ if (wps_ie && wpabuf_len(wps_ie) <=
+ sizeof(wpa_s->sme.assoc_req_ie)) {
+ wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
+ os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
+ wpa_s->sme.assoc_req_ie_len);
+ } else
+ wpa_s->sme.assoc_req_ie_len = 0;
+ wpabuf_free(wps_ie);
+ wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
+#endif /* CONFIG_WPS */
+ } else {
+ wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
+ wpa_s->sme.assoc_req_ie_len = 0;
+ }
+
+#ifdef CONFIG_IEEE80211R
+ ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
+ if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
+ md = ie + 2;
+ wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
+ if (md) {
+ /* Prepare for the next transition */
+ wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
+ }
+
+ if (md && ssid->key_mgmt & (WPA_KEY_MGMT_FT_PSK |
+ WPA_KEY_MGMT_FT_IEEE8021X)) {
+ if (wpa_s->sme.assoc_req_ie_len + 5 <
+ sizeof(wpa_s->sme.assoc_req_ie)) {
+ struct rsn_mdie *mdie;
+ u8 *pos = wpa_s->sme.assoc_req_ie +
+ wpa_s->sme.assoc_req_ie_len;
+ *pos++ = WLAN_EID_MOBILITY_DOMAIN;
+ *pos++ = sizeof(*mdie);
+ mdie = (struct rsn_mdie *) pos;
+ os_memcpy(mdie->mobility_domain, md,
+ MOBILITY_DOMAIN_ID_LEN);
+ mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
+ wpa_s->sme.assoc_req_ie_len += 5;
+ }
+
+ if (wpa_s->sme.ft_used &&
+ os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
+ wpa_sm_has_ptk(wpa_s->wpa)) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
+ "over-the-air");
+ params.auth_alg = WPA_AUTH_ALG_FT;
+ params.ie = wpa_s->sme.ft_ies;
+ params.ie_len = wpa_s->sme.ft_ies_len;
+ }
+ }
+#endif /* CONFIG_IEEE80211R */
+
+#ifdef CONFIG_IEEE80211W
+ wpa_s->sme.mfp = ssid->ieee80211w;
+ if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
+ const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
+ struct wpa_ie_data _ie;
+ if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
+ _ie.capabilities &
+ (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
+ "MFP: require MFP");
+ wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
+ }
+ }
+#endif /* CONFIG_IEEE80211W */
+
+#ifdef CONFIG_P2P
+ if (wpa_s->global->p2p) {
+ u8 *pos;
+ size_t len;
+ int res;
+ int p2p_group;
+ p2p_group = wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE;
+ 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, p2p_group);
+ if (res >= 0)
+ wpa_s->sme.assoc_req_ie_len += res;
+ }
+#endif /* CONFIG_P2P */
+
+ wpa_supplicant_cancel_scan(wpa_s);
+
+ wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
+ " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
+ wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
+
+ wpa_clear_keys(wpa_s, bss->bssid);
+ wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
+ old_ssid = wpa_s->current_ssid;
+ wpa_s->current_ssid = ssid;
+ wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
+ wpa_supplicant_initiate_eapol(wpa_s);
+ if (old_ssid != wpa_s->current_ssid)
+ wpas_notify_network_changed(wpa_s);
+
+ wpa_s->sme.auth_alg = params.auth_alg;
+ if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) {
+ wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
+ "driver failed");
+ wpa_supplicant_req_scan(wpa_s, 1, 0);
+ return;
+ }
+
+ eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
+ NULL);
+
+ /*
+ * Association will be started based on the authentication event from
+ * the driver.
+ */
+}
+
+
+void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
+{
+ struct wpa_ssid *ssid = wpa_s->current_ssid;
+
+ if (ssid == NULL) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
+ "when network is not selected");
+ return;
+ }
+
+ if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
+ "when not in authenticating state");
+ return;
+ }
+
+ if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
+ "unexpected peer " MACSTR,
+ MAC2STR(data->auth.peer));
+ return;
+ }
+
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
+ " auth_type=%d status_code=%d",
+ MAC2STR(data->auth.peer), data->auth.auth_type,
+ 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);
+
+ if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
+ 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) {
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ return;
+ }
+
+ switch (data->auth.auth_type) {
+ case WLAN_AUTH_OPEN:
+ wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
+
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
+ wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
+ wpa_s->current_ssid);
+ return;
+
+ case WLAN_AUTH_SHARED_KEY:
+ wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
+
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
+ wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
+ wpa_s->current_ssid);
+ return;
+
+ default:
+ return;
+ }
+ }
+
+#ifdef CONFIG_IEEE80211R
+ if (data->auth.auth_type == WLAN_AUTH_FT) {
+ union wpa_event_data edata;
+ os_memset(&edata, 0, sizeof(edata));
+ edata.ft_ies.ies = data->auth.ies;
+ edata.ft_ies.ies_len = data->auth.ies_len;
+ os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
+ wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
+ }
+#endif /* CONFIG_IEEE80211R */
+
+ sme_associate(wpa_s, ssid->mode, data->auth.peer,
+ data->auth.auth_type);
+}
+
+
+void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
+ const u8 *bssid, u16 auth_type)
+{
+ struct wpa_driver_associate_params params;
+ struct ieee802_11_elems elems;
+
+ os_memset(¶ms, 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.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_IEEE80211R
+ if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
+ params.wpa_ie = wpa_s->sme.ft_ies;
+ params.wpa_ie_len = wpa_s->sme.ft_ies_len;
+ }
+#endif /* CONFIG_IEEE80211R */
+ params.mode = mode;
+ params.mgmt_frame_protection = wpa_s->sme.mfp;
+ if (wpa_s->sme.prev_bssid_set)
+ params.prev_bssid = wpa_s->sme.prev_bssid;
+
+ wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
+ " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
+ params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
+ params.freq);
+
+ wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
+
+ if (params.wpa_ie == NULL ||
+ ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
+ < 0) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
+ os_memset(&elems, 0, sizeof(elems));
+ }
+ if (elems.rsn_ie)
+ wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
+ elems.rsn_ie_len + 2);
+ else if (elems.wpa_ie)
+ wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
+ elems.wpa_ie_len + 2);
+ else
+ wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
+ if (elems.p2p &&
+ (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
+ 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, ¶ms) < 0) {
+ wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
+ "driver failed");
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
+ return;
+ }
+
+ eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
+ NULL);
+}
+
+
+int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
+ const u8 *ies, size_t ies_len)
+{
+ if (md == NULL || ies == NULL) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
+ os_free(wpa_s->sme.ft_ies);
+ wpa_s->sme.ft_ies = NULL;
+ wpa_s->sme.ft_ies_len = 0;
+ wpa_s->sme.ft_used = 0;
+ return 0;
+ }
+
+ os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
+ wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
+ os_free(wpa_s->sme.ft_ies);
+ wpa_s->sme.ft_ies = os_malloc(ies_len);
+ if (wpa_s->sme.ft_ies == NULL)
+ return -1;
+ os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
+ wpa_s->sme.ft_ies_len = ies_len;
+ return 0;
+}
+
+
+static void sme_deauth(struct wpa_supplicant *wpa_s)
+{
+ int bssid_changed;
+
+ bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
+
+ if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
+ WLAN_REASON_DEAUTH_LEAVING) < 0) {
+ wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
+ "failed");
+ }
+ wpa_s->sme.prev_bssid_set = 0;
+
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
+ os_memset(wpa_s->bssid, 0, ETH_ALEN);
+ os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
+ if (bssid_changed)
+ wpas_notify_bssid_changed(wpa_s);
+}
+
+
+void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
+ union wpa_event_data *data)
+{
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
+ "status code %d", MAC2STR(wpa_s->pending_bssid),
+ data->assoc_reject.status_code);
+
+ eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
+
+ /*
+ * For now, unconditionally terminate the previous authentication. In
+ * theory, this should not be needed, but mac80211 gets quite confused
+ * if the authentication is left pending.. Some roaming cases might
+ * benefit from using the previous authentication, so this could be
+ * optimized in the future.
+ */
+ sme_deauth(wpa_s);
+}
+
+
+void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
+ union wpa_event_data *data)
+{
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+}
+
+
+void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
+ union wpa_event_data *data)
+{
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ wpa_supplicant_mark_disassoc(wpa_s);
+}
+
+
+void sme_event_disassoc(struct wpa_supplicant *wpa_s,
+ union wpa_event_data *data)
+{
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
+ if (wpa_s->sme.prev_bssid_set &&
+ !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)) {
+ /*
+ * cfg80211/mac80211 can get into somewhat confused state if
+ * the AP only disassociates us and leaves us in authenticated
+ * state. For now, force the state to be cleared to avoid
+ * confusing errors if we try to associate with the AP again.
+ */
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
+ "driver state");
+ wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
+ WLAN_REASON_DEAUTH_LEAVING);
+ }
+}
+
+
+static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
+{
+ struct wpa_supplicant *wpa_s = eloop_ctx;
+ if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
+ wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
+ sme_deauth(wpa_s);
+ }
+}
+
+
+static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
+{
+ struct wpa_supplicant *wpa_s = eloop_ctx;
+ if (wpa_s->wpa_state == WPA_ASSOCIATING) {
+ wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
+ sme_deauth(wpa_s);
+ }
+}
+
+
+void sme_state_changed(struct wpa_supplicant *wpa_s)
+{
+ /* Make sure timers are cleaned up appropriately. */
+ if (wpa_s->wpa_state != WPA_ASSOCIATING)
+ eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
+ if (wpa_s->wpa_state != WPA_AUTHENTICATING)
+ eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
+}
+
+
+void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
+ const u8 *prev_pending_bssid)
+{
+ /*
+ * mac80211-workaround to force deauth on failed auth cmd,
+ * requires us to remain in authenticating state to allow the
+ * second authentication attempt to be continued properly.
+ */
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
+ "to proceed after disconnection event");
+ wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
+ os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
+
+ /*
+ * Re-arm authentication timer in case auth fails for whatever reason.
+ */
+ eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
+ eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
+ NULL);
+}
+
+
+void sme_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);
+}
+
+
+#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)
+ 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(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);
+}
+
+
+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 == 0)
+ 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 */