Stripped down import of hostapd v0.3.7

1 files changed, 1217 insertions, 0 deletions

diff --git a/contrib/hostapd/ieee802_11.c b/contrib/hostapd/ieee802_11.c
new file mode 100644
index 0000000..16a3d0e
--- /dev/null
+++ b/contrib/hostapd/ieee802_11.c
@@ -0,0 +1,1217 @@
+/*
+ * Host AP (software wireless LAN access point) user space daemon for
+ * Host AP kernel driver / IEEE 802.11 Management
+ * Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <arpa/inet.h>
+#include <time.h>
+
+#include "eloop.h"
+#include "hostapd.h"
+#include "ieee802_11.h"
+#include "radius.h"
+#include "radius_client.h"
+#include "ieee802_11_auth.h"
+#include "sta_info.h"
+#include "eapol_sm.h"
+#include "rc4.h"
+#include "ieee802_1x.h"
+#include "wpa.h"
+#include "accounting.h"
+#include "driver.h"
+
+
+static u8 * hostapd_eid_supp_rates(hostapd *hapd, u8 *eid)
+{
+	u8 *pos = eid;
+
+	*pos++ = WLAN_EID_SUPP_RATES;
+	*pos++ = 4; /* len */
+	*pos++ = 0x82; /* 1 Mbps, base set */
+	*pos++ = 0x84; /* 2 Mbps, base set */
+	*pos++ = 0x0b; /* 5.5 Mbps */
+	*pos++ = 0x16; /* 11 Mbps */
+
+	return pos;
+}
+
+
+static u16 hostapd_own_capab_info(hostapd *hapd)
+{
+	int capab = WLAN_CAPABILITY_ESS;
+	if (hapd->conf->wpa ||
+	    (hapd->conf->ieee802_1x &&
+	     (hapd->conf->default_wep_key_len ||
+	      hapd->conf->individual_wep_key_len)))
+		capab |= WLAN_CAPABILITY_PRIVACY;
+	return capab;
+}
+
+
+static const u8 WPA_OUI_TYPE[] = { 0x00, 0x50, 0xf2, 1 };
+
+ParseRes ieee802_11_parse_elems(struct hostapd_data *hapd, u8 *start,
+				size_t len,
+				struct ieee802_11_elems *elems,
+				int show_errors)
+{
+	size_t left = len;
+	u8 *pos = start;
+	int unknown = 0;
+
+	memset(elems, 0, sizeof(*elems));
+
+	while (left >= 2) {
+		u8 id, elen;
+
+		id = *pos++;
+		elen = *pos++;
+		left -= 2;
+
+		if (elen > left) {
+			if (show_errors) {
+				HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+					      "IEEE 802.11 element parse "
+					      "failed (id=%d elen=%d "
+					      "left=%lu)\n",
+					      id, elen, (unsigned long) left);
+				if (HOSTAPD_DEBUG_COND(HOSTAPD_DEBUG_MINIMAL))
+					hostapd_hexdump("IEs", start, len);
+			}
+			return ParseFailed;
+		}
+
+		switch (id) {
+		case WLAN_EID_SSID:
+			elems->ssid = pos;
+			elems->ssid_len = elen;
+			break;
+		case WLAN_EID_SUPP_RATES:
+			elems->supp_rates = pos;
+			elems->supp_rates_len = elen;
+			break;
+		case WLAN_EID_FH_PARAMS:
+			elems->fh_params = pos;
+			elems->fh_params_len = elen;
+			break;
+		case WLAN_EID_DS_PARAMS:
+			elems->ds_params = pos;
+			elems->ds_params_len = elen;
+			break;
+		case WLAN_EID_CF_PARAMS:
+			elems->cf_params = pos;
+			elems->cf_params_len = elen;
+			break;
+		case WLAN_EID_TIM:
+			elems->tim = pos;
+			elems->tim_len = elen;
+			break;
+		case WLAN_EID_IBSS_PARAMS:
+			elems->ibss_params = pos;
+			elems->ibss_params_len = elen;
+			break;
+		case WLAN_EID_CHALLENGE:
+			elems->challenge = pos;
+			elems->challenge_len = elen;
+			break;
+		case WLAN_EID_GENERIC:
+			if (elen > 4 && memcmp(pos, WPA_OUI_TYPE, 4) == 0) {
+				elems->wpa_ie = pos;
+				elems->wpa_ie_len = elen;
+			} else if (show_errors) {
+				HOSTAPD_DEBUG(HOSTAPD_DEBUG_EXCESSIVE,
+					      "IEEE 802.11 element parse "
+					      "ignored unknown generic element"
+					      " (id=%d elen=%d OUI:type="
+					      "%02x-%02x-%02x:%d)\n",
+					      id, elen,
+					      elen >= 1 ? pos[0] : 0,
+					      elen >= 2 ? pos[1] : 0,
+					      elen >= 3 ? pos[2] : 0,
+					      elen >= 4 ? pos[3] : 0);
+				unknown++;
+			} else {
+				unknown++;
+			}
+			break;
+		case WLAN_EID_RSN:
+			elems->rsn_ie = pos;
+			elems->rsn_ie_len = elen;
+			break;
+		default:
+			unknown++;
+			if (!show_errors)
+				break;
+			HOSTAPD_DEBUG(HOSTAPD_DEBUG_EXCESSIVE,
+				      "IEEE 802.11 element parse ignored "
+				      "unknown element (id=%d elen=%d)\n",
+				      id, elen);
+			break;
+		}
+
+		left -= elen;
+		pos += elen;
+	}
+
+	if (left)
+		return ParseFailed;
+
+	return unknown ? ParseUnknown : ParseOK;
+}
+
+
+static void ieee802_11_print_ssid(u8 *ssid, u8 len)
+{
+	int i;
+	for (i = 0; i < len; i++) {
+		if (ssid[i] >= 32 && ssid[i] < 127)
+			printf("%c", ssid[i]);
+		else
+			printf("<%02x>", ssid[i]);
+	}
+}
+
+
+static void ieee802_11_sta_authenticate(void *eloop_ctx, void *timeout_ctx)
+{
+	hostapd *hapd = eloop_ctx;
+	struct ieee80211_mgmt mgmt;
+
+	if (hapd->assoc_ap_state == WAIT_BEACON)
+		hapd->assoc_ap_state = AUTHENTICATE;
+	if (hapd->assoc_ap_state != AUTHENTICATE)
+		return;
+
+	printf("Authenticate with AP " MACSTR " SSID=",
+	       MAC2STR(hapd->conf->assoc_ap_addr));
+	ieee802_11_print_ssid(hapd->assoc_ap_ssid, hapd->assoc_ap_ssid_len);
+	printf(" (as station)\n");
+
+	memset(&mgmt, 0, sizeof(mgmt));
+	mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+					  WLAN_FC_STYPE_AUTH);
+	/* Request TX callback */
+	mgmt.frame_control |= host_to_le16(BIT(1));
+	memcpy(mgmt.da, hapd->conf->assoc_ap_addr, ETH_ALEN);
+	memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
+	memcpy(mgmt.bssid, hapd->conf->assoc_ap_addr, ETH_ALEN);
+	mgmt.u.auth.auth_alg = host_to_le16(WLAN_AUTH_OPEN);
+	mgmt.u.auth.auth_transaction = host_to_le16(1);
+	mgmt.u.auth.status_code = host_to_le16(0);
+	if (hostapd_send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
+				    sizeof(mgmt.u.auth), 0) < 0)
+		perror("ieee802_11_sta_authenticate: send");
+
+	/* Try to authenticate again, if this attempt fails or times out. */
+	eloop_register_timeout(5, 0, ieee802_11_sta_authenticate, hapd, NULL);
+}
+
+
+static void ieee802_11_sta_associate(void *eloop_ctx, void *timeout_ctx)
+{
+	hostapd *hapd = eloop_ctx;
+	u8 buf[256];
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
+	u8 *p;
+
+	if (hapd->assoc_ap_state == AUTHENTICATE)
+		hapd->assoc_ap_state = ASSOCIATE;
+	if (hapd->assoc_ap_state != ASSOCIATE)
+		return;
+
+	printf("Associate with AP " MACSTR " SSID=",
+	       MAC2STR(hapd->conf->assoc_ap_addr));
+	ieee802_11_print_ssid(hapd->assoc_ap_ssid, hapd->assoc_ap_ssid_len);
+	printf(" (as station)\n");
+
+	memset(mgmt, 0, sizeof(*mgmt));
+	mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+					  WLAN_FC_STYPE_ASSOC_REQ);
+	/* Request TX callback */
+	mgmt->frame_control |= host_to_le16(BIT(1));
+	memcpy(mgmt->da, hapd->conf->assoc_ap_addr, ETH_ALEN);
+	memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
+	memcpy(mgmt->bssid, hapd->conf->assoc_ap_addr, ETH_ALEN);
+	mgmt->u.assoc_req.capab_info = host_to_le16(0);
+	mgmt->u.assoc_req.listen_interval = host_to_le16(1);
+	p = &mgmt->u.assoc_req.variable[0];
+
+	*p++ = WLAN_EID_SSID;
+	*p++ = hapd->assoc_ap_ssid_len;
+	memcpy(p, hapd->assoc_ap_ssid, hapd->assoc_ap_ssid_len);
+	p += hapd->assoc_ap_ssid_len;
+
+	p = hostapd_eid_supp_rates(hapd, p);
+
+	if (hostapd_send_mgmt_frame(hapd, mgmt, p - (u8 *) mgmt, 0) < 0)
+		perror("ieee802_11_sta_associate: send");
+
+	/* Try to authenticate again, if this attempt fails or times out. */
+	eloop_register_timeout(5, 0, ieee802_11_sta_associate, hapd, NULL);
+}
+
+
+static u16 auth_shared_key(hostapd *hapd, struct sta_info *sta,
+			   u16 auth_transaction, u8 *challenge, int iswep)
+{
+	hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
+		       HOSTAPD_LEVEL_DEBUG,
+		       "authentication (shared key, transaction %d)",
+		       auth_transaction);
+
+	if (auth_transaction == 1) {
+		if (!sta->challenge) {
+			/* Generate a pseudo-random challenge */
+			u8 key[8];
+			time_t now;
+			int r;
+			sta->challenge = malloc(WLAN_AUTH_CHALLENGE_LEN);
+			if (!sta->challenge)
+				return WLAN_STATUS_UNSPECIFIED_FAILURE;
+			memset(sta->challenge, 0, WLAN_AUTH_CHALLENGE_LEN);
+
+			now = time(NULL);
+			r = random();
+			memcpy(key, &now, 4);
+			memcpy(key + 4, &r, 4);
+			rc4(sta->challenge, WLAN_AUTH_CHALLENGE_LEN,
+			    key, sizeof(key));
+		}
+		return 0;
+	}
+
+	if (auth_transaction != 3)
+		return WLAN_STATUS_UNSPECIFIED_FAILURE;
+
+	/* Transaction 3 */
+	if (!iswep || !sta->challenge || !challenge ||
+	    memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
+		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
+			       HOSTAPD_LEVEL_INFO,
+			       "shared key authentication - invalid "
+			       "challenge-response");
+		return WLAN_STATUS_CHALLENGE_FAIL;
+	}
+
+	hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
+		       HOSTAPD_LEVEL_DEBUG,
+		       "authentication OK (shared key)");
+#ifdef IEEE80211_REQUIRE_AUTH_ACK
+	/* Station will be marked authenticated if it ACKs the
+	 * authentication reply. */
+#else
+	sta->flags |= WLAN_STA_AUTH;
+	wpa_sm_event(hapd, sta, WPA_AUTH);
+#endif
+	free(sta->challenge);
+	sta->challenge = NULL;
+
+	return 0;
+}
+
+
+static void send_auth_reply(hostapd *hapd, struct ieee80211_mgmt *mgmt,
+			    u16 auth_alg, u16 auth_transaction, u16 resp,
+			    u8 *challenge)
+{
+	u8 buf[IEEE80211_HDRLEN + sizeof(mgmt->u.auth) + 2 +
+	       WLAN_AUTH_CHALLENGE_LEN];
+	struct ieee80211_mgmt *reply;
+	size_t rlen;
+
+	memset(buf, 0, sizeof(buf));
+	reply = (struct ieee80211_mgmt *) buf;
+	reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+					   WLAN_FC_STYPE_AUTH);
+	/* Request TX callback */
+	reply->frame_control |= host_to_le16(BIT(1));
+	memcpy(reply->da, mgmt->sa, ETH_ALEN);
+	memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
+	memcpy(reply->bssid, mgmt->bssid, ETH_ALEN);
+
+	reply->u.auth.auth_alg = host_to_le16(auth_alg);
+	reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
+	reply->u.auth.status_code = host_to_le16(resp);
+	rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth);
+	if (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 2 &&
+	    challenge) {
+		u8 *p = reply->u.auth.variable;
+		*p++ = WLAN_EID_CHALLENGE;
+		*p++ = WLAN_AUTH_CHALLENGE_LEN;
+		memcpy(p, challenge, WLAN_AUTH_CHALLENGE_LEN);
+		rlen += 2 + WLAN_AUTH_CHALLENGE_LEN;
+	} else
+		challenge = NULL;
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		      "authentication reply: STA=" MACSTR " auth_alg=%d "
+		      "auth_transaction=%d resp=%d%s\n",
+		      MAC2STR(mgmt->sa), auth_alg, auth_transaction,
+		      resp, challenge ? " challenge" : "");
+	if (hostapd_send_mgmt_frame(hapd, reply, rlen, 0) < 0)
+		perror("send_auth_reply: send");
+}
+
+
+static void handle_auth(hostapd *hapd, struct ieee80211_mgmt *mgmt, size_t len)
+{
+	u16 auth_alg, auth_transaction, status_code;
+	u16 resp = WLAN_STATUS_SUCCESS;
+	struct sta_info *sta = NULL;
+	int res;
+	u16 fc;
+	u8 *challenge = NULL;
+	u32 session_timeout, acct_interim_interval;
+
+	if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
+		printf("handle_auth - too short payload (len=%lu)\n",
+		       (unsigned long) len);
+		return;
+	}
+
+	auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
+	auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
+	status_code = le_to_host16(mgmt->u.auth.status_code);
+	fc = le_to_host16(mgmt->frame_control);
+
+	if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
+	    2 + WLAN_AUTH_CHALLENGE_LEN &&
+	    mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
+	    mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
+		challenge = &mgmt->u.auth.variable[2];
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		      "authentication: STA=" MACSTR " auth_alg=%d "
+		      "auth_transaction=%d status_code=%d wep=%d%s\n",
+		      MAC2STR(mgmt->sa), auth_alg, auth_transaction,
+		      status_code, !!(fc & WLAN_FC_ISWEP),
+		      challenge ? " challenge" : "");
+
+	if (hapd->assoc_ap_state == AUTHENTICATE && auth_transaction == 2 &&
+	    memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0 &&
+	    memcmp(mgmt->bssid, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
+		if (status_code != 0) {
+			printf("Authentication (as station) with AP "
+			       MACSTR " failed (status_code=%d)\n",
+			       MAC2STR(hapd->conf->assoc_ap_addr),
+			       status_code);
+			return;
+		}
+		printf("Authenticated (as station) with AP " MACSTR "\n",
+		       MAC2STR(hapd->conf->assoc_ap_addr));
+		ieee802_11_sta_associate(hapd, NULL);
+		return;
+	}
+
+	if (hapd->tkip_countermeasures) {
+		resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
+		goto fail;
+	}
+
+	if (!(((hapd->conf->auth_algs & HOSTAPD_AUTH_OPEN) &&
+	       auth_alg == WLAN_AUTH_OPEN) ||
+	      ((hapd->conf->auth_algs & HOSTAPD_AUTH_SHARED_KEY) &&
+	       auth_alg == WLAN_AUTH_SHARED_KEY))) {
+		printf("Unsupported authentication algorithm (%d)\n",
+		       auth_alg);
+		resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
+		goto fail;
+	}
+
+	if (!(auth_transaction == 1 ||
+	      (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
+		printf("Unknown authentication transaction number (%d)\n",
+		       auth_transaction);
+		resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
+		goto fail;
+	}
+
+	if (memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
+		printf("Station " MACSTR " not allowed to authenticate.\n",
+		       MAC2STR(mgmt->sa));
+		resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
+		goto fail;
+	}
+
+	res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
+				      &session_timeout,
+				      &acct_interim_interval);
+	if (res == HOSTAPD_ACL_REJECT) {
+		printf("Station " MACSTR " not allowed to authenticate.\n",
+		       MAC2STR(mgmt->sa));
+		resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
+		goto fail;
+	}
+	if (res == HOSTAPD_ACL_PENDING) {
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "Authentication frame "
+			      "from " MACSTR " waiting for an external "
+			      "authentication\n", MAC2STR(mgmt->sa));
+		/* Authentication code will re-send the authentication frame
+		 * after it has received (and cached) information from the
+		 * external source. */
+		return;
+	}
+
+	sta = ap_sta_add(hapd, mgmt->sa);
+	if (!sta) {
+		resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
+		goto fail;
+	}
+	sta->flags &= ~WLAN_STA_PREAUTH;
+	ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
+
+	if (hapd->conf->radius_acct_interim_interval == 0 &&
+	    acct_interim_interval)
+		sta->acct_interim_interval = acct_interim_interval;
+	if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
+		ap_sta_session_timeout(hapd, sta, session_timeout);
+	else
+		ap_sta_no_session_timeout(hapd, sta);
+
+	switch (auth_alg) {
+	case WLAN_AUTH_OPEN:
+		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
+			       HOSTAPD_LEVEL_DEBUG,
+			       "authentication OK (open system)");
+#ifdef IEEE80211_REQUIRE_AUTH_ACK
+		/* Station will be marked authenticated if it ACKs the
+		 * authentication reply. */
+#else
+		sta->flags |= WLAN_STA_AUTH;
+		wpa_sm_event(hapd, sta, WPA_AUTH);
+#endif
+		break;
+	case WLAN_AUTH_SHARED_KEY:
+		resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
+				       fc & WLAN_FC_ISWEP);
+		break;
+	}
+
+ fail:
+	send_auth_reply(hapd, mgmt, auth_alg, auth_transaction + 1, resp,
+			sta ? sta->challenge : NULL);
+}
+
+
+static void handle_assoc(hostapd *hapd, struct ieee80211_mgmt *mgmt,
+			 size_t len, int reassoc)
+{
+	u16 capab_info, listen_interval;
+	u16 resp = WLAN_STATUS_SUCCESS;
+	u8 *pos, *wpa_ie;
+	size_t wpa_ie_len;
+	int send_deauth = 0, send_len, left, i;
+	struct sta_info *sta;
+	struct ieee802_11_elems elems;
+
+	if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
+				      sizeof(mgmt->u.assoc_req))) {
+		printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
+		       "\n", reassoc, (unsigned long) len);
+		return;
+	}
+
+	if (reassoc) {
+		capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
+		listen_interval = le_to_host16(
+			mgmt->u.reassoc_req.listen_interval);
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+			      "reassociation request: STA=" MACSTR
+			      " capab_info=0x%02x "
+			      "listen_interval=%d current_ap=" MACSTR "\n",
+			      MAC2STR(mgmt->sa), capab_info, listen_interval,
+			      MAC2STR(mgmt->u.reassoc_req.current_ap));
+		left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
+		pos = mgmt->u.reassoc_req.variable;
+	} else {
+		capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
+		listen_interval = le_to_host16(
+			mgmt->u.assoc_req.listen_interval);
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+			      "association request: STA=" MACSTR
+			      " capab_info=0x%02x listen_interval=%d\n",
+			      MAC2STR(mgmt->sa), capab_info, listen_interval);
+		left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
+		pos = mgmt->u.assoc_req.variable;
+	}
+
+	sta = ap_get_sta(hapd, mgmt->sa);
+	if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
+		printf("STA " MACSTR " trying to associate before "
+		       "authentication\n", MAC2STR(mgmt->sa));
+		if (sta) {
+			printf("  sta: addr=" MACSTR " aid=%d flags=0x%04x\n",
+			       MAC2STR(sta->addr), sta->aid, sta->flags);
+		}
+		send_deauth = 1;
+		resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
+		goto fail;
+	}
+
+	if (hapd->tkip_countermeasures) {
+		resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
+		goto fail;
+	}
+
+	sta->capability = capab_info;
+
+	/* followed by SSID and Supported rates */
+	if (ieee802_11_parse_elems(hapd, pos, left, &elems, 1) == ParseFailed
+	    || !elems.ssid) {
+		printf("STA " MACSTR " sent invalid association request\n",
+		       MAC2STR(sta->addr));
+		resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
+		goto fail;
+	}
+
+	if (elems.ssid_len != hapd->conf->ssid_len ||
+	    memcmp(elems.ssid, hapd->conf->ssid, elems.ssid_len) != 0) {
+		printf("Station " MACSTR " tried to associate with "
+		       "unknown SSID '", MAC2STR(sta->addr));
+		ieee802_11_print_ssid(elems.ssid, elems.ssid_len);
+		printf("'\n");
+		resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
+		goto fail;
+	}
+
+	if (elems.supp_rates) {
+		if (elems.supp_rates_len > sizeof(sta->supported_rates)) {
+			printf("STA " MACSTR ": Invalid supported rates "
+			       "element length %d\n", MAC2STR(sta->addr),
+			       elems.supp_rates_len);
+			resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
+			goto fail;
+		}
+
+		memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
+		memcpy(sta->supported_rates, elems.supp_rates,
+		       elems.supp_rates_len);
+
+		sta->tx_supp_rates = 0;
+		for (i = 0; i < elems.supp_rates_len; i++) {
+			if ((sta->supported_rates[i] & 0x7f) == 2)
+				sta->tx_supp_rates |= WLAN_RATE_1M;
+			if ((sta->supported_rates[i] & 0x7f) == 4)
+				sta->tx_supp_rates |= WLAN_RATE_2M;
+			if ((sta->supported_rates[i] & 0x7f) == 11)
+				sta->tx_supp_rates |= WLAN_RATE_5M5;
+			if ((sta->supported_rates[i] & 0x7f) == 22)
+				sta->tx_supp_rates |= WLAN_RATE_11M;
+		}
+	} else
+		sta->tx_supp_rates = 0xff;
+
+	if ((hapd->conf->wpa & HOSTAPD_WPA_VERSION_WPA2) && elems.rsn_ie) {
+		wpa_ie = elems.rsn_ie;
+		wpa_ie_len = elems.rsn_ie_len;
+	} else if ((hapd->conf->wpa & HOSTAPD_WPA_VERSION_WPA) &&
+		   elems.wpa_ie) {
+		wpa_ie = elems.wpa_ie;
+		wpa_ie_len = elems.wpa_ie_len;
+	} else {
+		wpa_ie = NULL;
+		wpa_ie_len = 0;
+	}
+	if (hapd->conf->wpa && wpa_ie == NULL) {
+		printf("STA " MACSTR ": No WPA/RSN IE in association "
+		       "request\n", MAC2STR(sta->addr));
+		resp = WLAN_STATUS_INVALID_IE;
+		goto fail;
+	}
+
+	if (hapd->conf->wpa) {
+		int res;
+		wpa_ie -= 2;
+		wpa_ie_len += 2;
+		res = wpa_validate_wpa_ie(hapd, sta, wpa_ie, wpa_ie_len,
+					  elems.rsn_ie ?
+					  HOSTAPD_WPA_VERSION_WPA2 :
+					  HOSTAPD_WPA_VERSION_WPA);
+		if (res == WPA_INVALID_GROUP)
+			resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
+		else if (res == WPA_INVALID_PAIRWISE)
+			resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
+		else if (res == WPA_INVALID_AKMP)
+			resp = WLAN_STATUS_AKMP_NOT_VALID;
+		else if (res != WPA_IE_OK)
+			resp = WLAN_STATUS_INVALID_IE;
+		if (resp != WLAN_STATUS_SUCCESS)
+			goto fail;
+		free(sta->wpa_ie);
+		sta->wpa_ie = malloc(wpa_ie_len);
+		if (sta->wpa_ie == NULL) {
+			resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
+			goto fail;
+		}
+		sta->wpa_ie_len = wpa_ie_len;
+		memcpy(sta->wpa_ie, wpa_ie, wpa_ie_len);
+	}
+
+	/* get a unique AID */
+	if (sta->aid > 0) {
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+			      "  old AID %d\n", sta->aid);
+	} else {
+		for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++)
+			if (hapd->sta_aid[sta->aid - 1] == NULL)
+				break;
+		if (sta->aid > MAX_AID_TABLE_SIZE) {
+			sta->aid = 0;
+			resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
+			printf("  no room for more AIDs\n");
+			goto fail;
+		} else {
+			hapd->sta_aid[sta->aid - 1] = sta;
+			HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+				      "  new AID %d\n", sta->aid);
+		}
+	}
+
+	hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
+		       HOSTAPD_LEVEL_DEBUG,
+		       "association OK (aid %d)", sta->aid);
+	/* Station will be marked associated, after it acknowledges AssocResp
+	 */
+
+	if (sta->last_assoc_req)
+		free(sta->last_assoc_req);
+	sta->last_assoc_req = (struct ieee80211_mgmt *) malloc(len);
+	if (sta->last_assoc_req)
+		memcpy(sta->last_assoc_req, mgmt, len);
+
+	/* Make sure that the previously registered inactivity timer will not
+	 * remove the STA immediately. */
+	sta->timeout_next = STA_NULLFUNC;
+
+ fail:
+
+	/* use the queued buffer for transmission because it is large enough
+	 * and not needed anymore */
+	mgmt->frame_control =
+		IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+			     (send_deauth ? WLAN_FC_STYPE_DEAUTH :
+			      (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
+			       WLAN_FC_STYPE_ASSOC_RESP)));
+	memcpy(mgmt->da, mgmt->sa, ETH_ALEN);
+	memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
+	/* Addr3 = BSSID - already set */
+
+	send_len = IEEE80211_HDRLEN;
+	if (send_deauth) {
+		send_len += sizeof(mgmt->u.deauth);
+		mgmt->u.deauth.reason_code = host_to_le16(resp);
+	} else {
+		u8 *p;
+		send_len += sizeof(mgmt->u.assoc_resp);
+		mgmt->u.assoc_resp.capab_info =
+			host_to_le16(hostapd_own_capab_info(hapd));
+		mgmt->u.assoc_resp.status_code = host_to_le16(resp);
+		mgmt->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
+						      | BIT(14) | BIT(15));
+		/* Supported rates */
+		p = hostapd_eid_supp_rates(hapd, mgmt->u.assoc_resp.variable);
+		send_len += p - mgmt->u.assoc_resp.variable;
+
+		/* Request TX callback */
+		mgmt->frame_control |= host_to_le16(BIT(1));
+	}
+
+	if (hostapd_send_mgmt_frame(hapd, mgmt, send_len, 0) < 0)
+		perror("handle_assoc: send");
+}
+
+
+static void handle_assoc_resp(hostapd *hapd, struct ieee80211_mgmt *mgmt,
+			      size_t len)
+{
+	u16 status_code, aid;
+
+	if (hapd->assoc_ap_state != ASSOCIATE) {
+		printf("Unexpected association response received from " MACSTR
+		       "\n", MAC2STR(mgmt->sa));
+		return;
+	}
+
+	if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_resp)) {
+		printf("handle_assoc_resp - too short payload (len=%lu)\n",
+		       (unsigned long) len);
+		return;
+	}
+
+	if (memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) != 0 ||
+	    memcmp(mgmt->bssid, hapd->conf->assoc_ap_addr, ETH_ALEN) != 0) {
+		printf("Received association response from unexpected address "
+		       "(SA=" MACSTR " BSSID=" MACSTR "\n",
+		       MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
+		return;
+	}
+
+	status_code = le_to_host16(mgmt->u.assoc_resp.status_code);
+	aid = le_to_host16(mgmt->u.assoc_resp.aid);
+	aid &= ~(BIT(14) | BIT(15));
+
+	if (status_code != 0) {
+		printf("Association (as station) with AP " MACSTR " failed "
+		       "(status_code=%d)\n",
+		       MAC2STR(hapd->conf->assoc_ap_addr), status_code);
+		/* Try to authenticate again */
+		hapd->assoc_ap_state = AUTHENTICATE;
+		eloop_register_timeout(5, 0, ieee802_11_sta_authenticate,
+				       hapd, NULL);
+	}
+
+	printf("Associated (as station) with AP " MACSTR " (aid=%d)\n",
+	       MAC2STR(hapd->conf->assoc_ap_addr), aid);
+	hapd->assoc_ap_aid = aid;
+	hapd->assoc_ap_state = ASSOCIATED;
+
+	if (hostapd_set_assoc_ap(hapd, hapd->conf->assoc_ap_addr)) {
+		printf("Could not set associated AP address to kernel "
+		       "driver.\n");
+	}
+}
+
+
+static void handle_disassoc(hostapd *hapd, struct ieee80211_mgmt *mgmt,
+			    size_t len)
+{
+	struct sta_info *sta;
+
+	if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
+		printf("handle_disassoc - too short payload (len=%lu)\n",
+		       (unsigned long) len);
+		return;
+	}
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		      "disassocation: STA=" MACSTR " reason_code=%d\n",
+		      MAC2STR(mgmt->sa),
+		      le_to_host16(mgmt->u.disassoc.reason_code));
+
+	if (hapd->assoc_ap_state != DO_NOT_ASSOC &&
+	    memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
+		printf("Assoc AP " MACSTR " sent disassociation "
+		       "(reason_code=%d) - try to authenticate\n",
+		       MAC2STR(hapd->conf->assoc_ap_addr),
+		       le_to_host16(mgmt->u.disassoc.reason_code));
+		hapd->assoc_ap_state = AUTHENTICATE;
+		ieee802_11_sta_authenticate(hapd, NULL);
+		eloop_register_timeout(0, 500000, ieee802_11_sta_authenticate,
+				       hapd, NULL);
+		return;
+	}
+
+	sta = ap_get_sta(hapd, mgmt->sa);
+	if (sta == NULL) {
+		printf("Station " MACSTR " trying to disassociate, but it "
+		       "is not associated.\n", MAC2STR(mgmt->sa));
+		return;
+	}
+
+	sta->flags &= ~WLAN_STA_ASSOC;
+	wpa_sm_event(hapd, sta, WPA_DISASSOC);
+	hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
+		       HOSTAPD_LEVEL_INFO, "disassociated");
+	sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
+	ieee802_1x_set_port_enabled(hapd, sta, 0);
+	/* Stop Accounting and IEEE 802.1X sessions, but leave the STA
+	 * authenticated. */
+	accounting_sta_stop(hapd, sta);
+	ieee802_1x_free_station(sta);
+	hostapd_sta_remove(hapd, sta->addr);
+
+	if (sta->timeout_next == STA_NULLFUNC ||
+	    sta->timeout_next == STA_DISASSOC) {
+		sta->timeout_next = STA_DEAUTH;
+		eloop_cancel_timeout(ap_handle_timer, hapd, sta);
+		eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
+				       hapd, sta);
+	}
+}
+
+
+static void handle_deauth(hostapd *hapd, struct ieee80211_mgmt *mgmt,
+			  size_t len)
+{
+	struct sta_info *sta;
+
+	if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
+		printf("handle_deauth - too short payload (len=%lu)\n",
+		       (unsigned long) len);
+		return;
+	}
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		      "deauthentication: STA=" MACSTR " reason_code=%d\n",
+		      MAC2STR(mgmt->sa),
+		      le_to_host16(mgmt->u.deauth.reason_code));
+
+	if (hapd->assoc_ap_state != DO_NOT_ASSOC &&
+	    memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
+		printf("Assoc AP " MACSTR " sent deauthentication "
+		       "(reason_code=%d) - try to authenticate\n",
+		       MAC2STR(hapd->conf->assoc_ap_addr),
+		       le_to_host16(mgmt->u.deauth.reason_code));
+		hapd->assoc_ap_state = AUTHENTICATE;
+		eloop_register_timeout(0, 500000, ieee802_11_sta_authenticate,
+				       hapd, NULL);
+		return;
+	}
+
+	sta = ap_get_sta(hapd, mgmt->sa);
+	if (sta == NULL) {
+		printf("Station " MACSTR " trying to deauthenticate, but it "
+		       "is not authenticated.\n", MAC2STR(mgmt->sa));
+		return;
+	}
+
+	sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
+	wpa_sm_event(hapd, sta, WPA_DEAUTH);
+	hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
+		       HOSTAPD_LEVEL_DEBUG, "deauthenticated");
+	sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
+	ieee802_1x_set_port_enabled(hapd, sta, 0);
+	ap_free_sta(hapd, sta);
+}
+
+
+static void handle_beacon(hostapd *hapd, struct ieee80211_mgmt *mgmt,
+			  size_t len)
+{
+	struct ieee802_11_elems elems;
+
+	if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
+		printf("handle_beacon - too short payload (len=%lu)\n",
+		       (unsigned long) len);
+		return;
+	}
+
+	(void) ieee802_11_parse_elems(hapd, mgmt->u.beacon.variable,
+				      len - (IEEE80211_HDRLEN +
+					     sizeof(mgmt->u.beacon)), &elems,
+				      0);
+
+	if (hapd->assoc_ap_state == WAIT_BEACON &&
+	    memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
+		if (elems.ssid && elems.ssid_len <= 32) {
+			memcpy(hapd->assoc_ap_ssid, elems.ssid,
+			       elems.ssid_len);
+			hapd->assoc_ap_ssid[elems.ssid_len] = '\0';
+			hapd->assoc_ap_ssid_len = elems.ssid_len;
+		}
+		ieee802_11_sta_authenticate(hapd, NULL);
+	}
+
+	if (!HOSTAPD_DEBUG_COND(HOSTAPD_DEBUG_EXCESSIVE))
+		return;
+
+	printf("Beacon from " MACSTR, MAC2STR(mgmt->sa));
+	if (elems.ssid) {
+		printf(" SSID='");
+		ieee802_11_print_ssid(elems.ssid, elems.ssid_len);
+		printf("'");
+	}
+	if (elems.ds_params && elems.ds_params_len == 1)
+		printf(" CHAN=%d", elems.ds_params[0]);
+	printf("\n");
+}
+
+
+void ieee802_11_mgmt(struct hostapd_data *hapd, u8 *buf, size_t len, u16 stype)
+{
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
+
+	if (stype == WLAN_FC_STYPE_BEACON) {
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_EXCESSIVE, "mgmt::beacon\n");
+		handle_beacon(hapd, mgmt, len);
+		return;
+	}
+
+	if (memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0 &&
+	    (hapd->assoc_ap_state == DO_NOT_ASSOC ||
+	     memcmp(mgmt->bssid, hapd->conf->assoc_ap_addr, ETH_ALEN) != 0)) {
+		printf("MGMT: BSSID=" MACSTR " not our address\n",
+		       MAC2STR(mgmt->bssid));
+		return;
+	}
+
+
+	if (stype == WLAN_FC_STYPE_PROBE_REQ) {
+		printf("mgmt::probe_req\n");
+		return;
+	}
+
+	if (memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
+		printf("MGMT: DA=" MACSTR " not our address\n",
+		       MAC2STR(mgmt->da));
+		return;
+	}
+
+	switch (stype) {
+	case WLAN_FC_STYPE_AUTH:
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::auth\n");
+		handle_auth(hapd, mgmt, len);
+		break;
+	case WLAN_FC_STYPE_ASSOC_REQ:
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::assoc_req\n");
+		handle_assoc(hapd, mgmt, len, 0);
+		break;
+	case WLAN_FC_STYPE_ASSOC_RESP:
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::assoc_resp\n");
+		handle_assoc_resp(hapd, mgmt, len);
+		break;
+	case WLAN_FC_STYPE_REASSOC_REQ:
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::reassoc_req\n");
+		handle_assoc(hapd, mgmt, len, 1);
+		break;
+	case WLAN_FC_STYPE_DISASSOC:
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::disassoc\n");
+		handle_disassoc(hapd, mgmt, len);
+		break;
+	case WLAN_FC_STYPE_DEAUTH:
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::deauth\n");
+		handle_deauth(hapd, mgmt, len);
+		break;
+	default:
+		printf("unknown mgmt frame subtype %d\n", stype);
+		break;
+	}
+}
+
+
+static void handle_auth_cb(hostapd *hapd, struct ieee80211_mgmt *mgmt,
+			   size_t len, int ok)
+{
+	u16 auth_alg, auth_transaction, status_code;
+	struct sta_info *sta;
+
+	if (!ok) {
+		hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
+			       HOSTAPD_LEVEL_NOTICE,
+			       "did not acknowledge authentication response");
+		return;
+	}
+
+	if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
+		printf("handle_auth_cb - too short payload (len=%lu)\n",
+		       (unsigned long) len);
+		return;
+	}
+
+	auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
+	auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
+	status_code = le_to_host16(mgmt->u.auth.status_code);
+
+	sta = ap_get_sta(hapd, mgmt->da);
+	if (!sta) {
+		printf("handle_auth_cb: STA " MACSTR " not found\n",
+		       MAC2STR(mgmt->da));
+		return;
+	}
+
+	if (status_code == WLAN_STATUS_SUCCESS &&
+	    ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
+	     (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
+		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
+			       HOSTAPD_LEVEL_INFO, "authenticated");
+		sta->flags |= WLAN_STA_AUTH;
+	}
+}
+
+
+static void handle_assoc_cb(hostapd *hapd, struct ieee80211_mgmt *mgmt,
+			    size_t len, int reassoc, int ok)
+{
+	u16 status;
+	struct sta_info *sta;
+	int new_assoc = 1;
+
+	if (!ok) {
+		hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
+			       HOSTAPD_LEVEL_DEBUG,
+			       "did not acknowledge association response");
+		return;
+	}
+
+	if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
+				      sizeof(mgmt->u.assoc_req))) {
+		printf("handle_assoc_cb(reassoc=%d) - too short payload "
+		       "(len=%lu)\n", reassoc, (unsigned long) len);
+		return;
+	}
+
+	if (reassoc)
+		status = le_to_host16(mgmt->u.reassoc_resp.status_code);
+	else
+		status = le_to_host16(mgmt->u.assoc_resp.status_code);
+
+	sta = ap_get_sta(hapd, mgmt->da);
+	if (!sta) {
+		printf("handle_assoc_cb: STA " MACSTR " not found\n",
+		       MAC2STR(mgmt->da));
+		return;
+	}
+
+	if (status != WLAN_STATUS_SUCCESS)
+		goto fail;
+
+	/* Stop previous accounting session, if one is started, and allocate
+	 * new session id for the new session. */
+	accounting_sta_stop(hapd, sta);
+	accounting_sta_get_id(hapd, sta);
+
+	hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
+		       HOSTAPD_LEVEL_INFO,
+		       "associated (aid %d, accounting session %08X-%08X)",
+		       sta->aid, sta->acct_session_id_hi,
+		       sta->acct_session_id_lo);
+
+	if (sta->flags & WLAN_STA_ASSOC)
+		new_assoc = 0;
+	sta->flags |= WLAN_STA_ASSOC;
+
+	if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability,
+			    sta->tx_supp_rates)) {
+		printf("Could not add station to kernel driver.\n");
+	}
+
+	wpa_sm_event(hapd, sta, WPA_ASSOC);
+	if (new_assoc)
+		hostapd_new_assoc_sta(hapd, sta);
+	else
+		wpa_sm_event(hapd, sta, WPA_REAUTH);
+
+	ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
+
+ fail:
+	/* Copy of the association request is not needed anymore */
+	if (sta->last_assoc_req) {
+		free(sta->last_assoc_req);
+		sta->last_assoc_req = NULL;
+	}
+}
+
+
+void ieee802_11_mgmt_cb(struct hostapd_data *hapd, u8 *buf, size_t len,
+			u16 stype, int ok)
+{
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
+
+	switch (stype) {
+	case WLAN_FC_STYPE_AUTH:
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::auth cb\n");
+		handle_auth_cb(hapd, mgmt, len, ok);
+		break;
+	case WLAN_FC_STYPE_ASSOC_RESP:
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+			      "mgmt::assoc_resp cb\n");
+		handle_assoc_cb(hapd, mgmt, len, 0, ok);
+		break;
+	case WLAN_FC_STYPE_REASSOC_RESP:
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+			      "mgmt::reassoc_resp cb\n");
+		handle_assoc_cb(hapd, mgmt, len, 1, ok);
+		break;
+	default:
+		printf("unknown mgmt cb frame subtype %d\n", stype);
+		break;
+	}
+}
+
+
+static void ieee80211_tkip_countermeasures_stop(void *eloop_ctx,
+						void *timeout_ctx)
+{
+	struct hostapd_data *hapd = eloop_ctx;
+	hapd->tkip_countermeasures = 0;
+	hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
+		       HOSTAPD_LEVEL_INFO, "TKIP countermeasures ended");
+}
+
+
+static void ieee80211_tkip_countermeasures_start(struct hostapd_data *hapd)
+{
+	struct sta_info *sta;
+
+	hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
+		       HOSTAPD_LEVEL_INFO, "TKIP countermeasures initiated");
+
+	if (hapd->wpa_auth)
+		hapd->wpa_auth->dot11RSNATKIPCounterMeasuresInvoked++;
+	hapd->tkip_countermeasures = 1;
+	wpa_gtk_rekey(hapd);
+	eloop_cancel_timeout(ieee80211_tkip_countermeasures_stop, hapd, NULL);
+	eloop_register_timeout(60, 0, ieee80211_tkip_countermeasures_stop,
+			       hapd, NULL);
+	for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
+		hostapd_sta_deauth(hapd, sta->addr,
+				   WLAN_REASON_MICHAEL_MIC_FAILURE);
+		sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
+				WLAN_STA_AUTHORIZED);
+		hostapd_sta_remove(hapd, sta->addr);
+	}
+}
+
+
+void ieee80211_michael_mic_failure(struct hostapd_data *hapd, u8 *addr,
+				   int local)
+{
+	time_t now;
+
+	if (addr && local) {
+		struct sta_info *sta = ap_get_sta(hapd, addr);
+		if (sta != NULL) {
+			sta->dot11RSNAStatsTKIPLocalMICFailures++;
+			hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
+				       HOSTAPD_LEVEL_INFO,
+				       "Michael MIC failure detected in "
+				       "received frame");
+		} else {
+			HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+				      "MLME-MICHAELMICFAILURE.indication "
+				      "for not associated STA (" MACSTR
+				      ") ignored\n", MAC2STR(addr));
+			return;
+		}
+	}
+
+	time(&now);
+	if (now > hapd->michael_mic_failure + 60) {
+		hapd->michael_mic_failures = 1;
+	} else {
+		hapd->michael_mic_failures++;
+		if (hapd->michael_mic_failures > 1)
+			ieee80211_tkip_countermeasures_start(hapd);
+	}
+	hapd->michael_mic_failure = now;
+}
+
+
+int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
+{
+	/* TODO */
+	return 0;
+}
+
+
+int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
+			   char *buf, size_t buflen)
+{
+	/* TODO */
+	return 0;
+}