path: root/openwrt/package/hostapd/patches/002-madwifi.patch

diff -ruN hostapd-0.4.5-old/driver_madwifi.c hostapd-0.4.5-new/driver_madwifi.c
--- hostapd-0.4.5-old/driver_madwifi.c	2005-10-23 14:52:39.000000000 +0200
+++ hostapd-0.4.5-new/driver_madwifi.c	2005-10-23 15:09:45.000000000 +0200
@@ -20,19 +20,20 @@
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <linux/if.h>
+#include <stdint.h>
 
 #include <include/compat.h>
 #include <net80211/ieee80211.h>
 #ifdef WME_NUM_AC
 /* Assume this is built against BSD branch of madwifi driver. */
-#define MADWIFI_BSD
 #include <net80211/_ieee80211.h>
 #endif /* WME_NUM_AC */
 #include <net80211/ieee80211_crypto.h>
 #include <net80211/ieee80211_ioctl.h>
 
 #include <net/if_arp.h>
-#include "wireless_copy.h"
+#include <wireless.h>
 
 #include <netinet/in.h>
 #include <netpacket/packet.h>
diff -ruN hostapd-0.4.5-old/driver_madwifi.~c hostapd-0.4.5-new/driver_madwifi.~c
--- hostapd-0.4.5-old/driver_madwifi.~c	1970-01-01 01:00:00.000000000 +0100
+++ hostapd-0.4.5-new/driver_madwifi.~c	2005-10-23 15:06:20.000000000 +0200
@@ -0,0 +1,1248 @@
+/*
+ * Host AP - driver interaction with MADWIFI 802.11 driver
+ * Copyright (c) 2004, Sam Leffler <sam@errno.com>
+ * Copyright (c) 2004, Video54 Technologies
+ *
+ * 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 <unistd.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <include/compat.h>
+#include <net80211/ieee80211.h>
+#ifdef WME_NUM_AC
+/* Assume this is built against BSD branch of madwifi driver. */
+#include <net80211/_ieee80211.h>
+#endif /* WME_NUM_AC */
+#include <net80211/ieee80211_crypto.h>
+#include <net80211/ieee80211_ioctl.h>
+
+#include <net/if_arp.h>
+#include <wireless.h>
+
+#include <netinet/in.h>
+#include <netpacket/packet.h>
+
+#include "hostapd.h"
+#include "driver.h"
+#include "ieee802_1x.h"
+#include "eloop.h"
+#include "priv_netlink.h"
+#include "sta_info.h"
+#include "l2_packet.h"
+#include "hostap_common.h"
+
+#include "eapol_sm.h"
+#include "wpa.h"
+#include "radius.h"
+#include "ieee802_11.h"
+#include "accounting.h"
+#include "common.h"
+
+
+struct madwifi_driver_data {
+	struct driver_ops ops;			/* base class */
+	struct hostapd_data *hapd;		/* back pointer */
+
+	char	iface[IFNAMSIZ + 1];
+	int     ifindex;
+	struct l2_packet_data *sock_xmit;	/* raw packet xmit socket */
+	struct l2_packet_data *sock_recv;	/* raw packet recv socket */
+	int	ioctl_sock;			/* socket for ioctl() use */
+	int	wext_sock;			/* socket for wireless events */
+	int	we_version;
+	u8	acct_mac[ETH_ALEN];
+	struct hostap_sta_driver_data acct_data;
+};
+
+static const struct driver_ops madwifi_driver_ops;
+
+static int madwifi_sta_deauth(void *priv, u8 *addr, int reason_code);
+
+static int
+set80211priv(struct madwifi_driver_data *drv, int op, void *data, int len)
+{
+#define	N(a)	(sizeof(a)/sizeof(a[0]))
+	struct iwreq iwr;
+
+	memset(&iwr, 0, sizeof(iwr));
+	strncpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
+	if (len < IFNAMSIZ) {
+		/*
+		 * Argument data fits inline; put it there.
+		 */
+		memcpy(iwr.u.name, data, len);
+	} else {
+		/*
+		 * Argument data too big for inline transfer; setup a
+		 * parameter block instead; the kernel will transfer
+		 * the data for the driver.
+		 */
+		iwr.u.data.pointer = data;
+		iwr.u.data.length = len;
+	}
+
+	if (ioctl(drv->ioctl_sock, op, &iwr) < 0) {
+		static const char *opnames[] = {
+			"ioctl[IEEE80211_IOCTL_SETPARAM]",
+			"ioctl[IEEE80211_IOCTL_GETPARAM]",
+			"ioctl[IEEE80211_IOCTL_SETKEY]",
+			"ioctl[SIOCIWFIRSTPRIV+3]",
+			"ioctl[IEEE80211_IOCTL_DELKEY]",
+			"ioctl[SIOCIWFIRSTPRIV+5]",
+			"ioctl[IEEE80211_IOCTL_SETMLME]",
+			"ioctl[SIOCIWFIRSTPRIV+7]",
+			"ioctl[IEEE80211_IOCTL_SETOPTIE]",
+			"ioctl[IEEE80211_IOCTL_GETOPTIE]",
+			"ioctl[IEEE80211_IOCTL_ADDMAC]",
+			"ioctl[SIOCIWFIRSTPRIV+11]",
+			"ioctl[IEEE80211_IOCTL_DELMAC]",
+			"ioctl[SIOCIWFIRSTPRIV+13]",
+			"ioctl[IEEE80211_IOCTL_CHANLIST]",
+			"ioctl[SIOCIWFIRSTPRIV+15]",
+			"ioctl[IEEE80211_IOCTL_GETRSN]",
+			"ioctl[SIOCIWFIRSTPRIV+17]",
+			"ioctl[IEEE80211_IOCTL_GETKEY]",
+		};
+		op -= SIOCIWFIRSTPRIV;
+		if (0 <= op && op < N(opnames))
+			perror(opnames[op]);
+		else
+			perror("ioctl[unknown???]");
+		return -1;
+	}
+	return 0;
+#undef N
+}
+
+static int
+set80211param(struct madwifi_driver_data *drv, int op, int arg)
+{
+	struct iwreq iwr;
+
+	memset(&iwr, 0, sizeof(iwr));
+	strncpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
+	iwr.u.mode = op;
+	memcpy(iwr.u.name+sizeof(__u32), &arg, sizeof(arg));
+
+	if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
+		perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
+		return -1;
+	}
+	return 0;
+}
+
+static const char *
+ether_sprintf(const u8 *addr)
+{
+	static char buf[sizeof(MACSTR)];
+
+	if (addr != NULL)
+		snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
+	else
+		snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
+	return buf;
+}
+
+/*
+ * Configure WPA parameters.
+ */
+static int
+madwifi_configure_wpa(struct madwifi_driver_data *drv)
+{
+	hostapd *hapd = drv->hapd;
+	struct hostapd_config *conf = hapd->conf;
+	int v;
+
+	switch (conf->wpa_group) {
+	case WPA_CIPHER_CCMP:
+		v = IEEE80211_CIPHER_AES_CCM;
+		break;
+	case WPA_CIPHER_TKIP:
+		v = IEEE80211_CIPHER_TKIP;
+		break;
+	case WPA_CIPHER_WEP104:
+		v = IEEE80211_CIPHER_WEP;
+		break;
+	case WPA_CIPHER_WEP40:
+		v = IEEE80211_CIPHER_WEP;
+		break;
+	case WPA_CIPHER_NONE:
+		v = IEEE80211_CIPHER_NONE;
+		break;
+	default:
+		printf("Unknown group key cipher %u\n",
+			conf->wpa_group);
+		return -1;
+	}
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		"%s: group key cipher=%d\n", __func__, v);
+	if (set80211param(drv, IEEE80211_PARAM_MCASTCIPHER, v)) {
+		printf("Unable to set group key cipher to %u\n", v);
+		return -1;
+	}
+	if (v == IEEE80211_CIPHER_WEP) {
+		/* key length is done only for specific ciphers */
+		v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
+		if (set80211param(drv, IEEE80211_PARAM_MCASTKEYLEN, v)) {
+			printf("Unable to set group key length to %u\n", v);
+			return -1;
+		}
+	}
+
+	v = 0;
+	if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
+		v |= 1<<IEEE80211_CIPHER_AES_CCM;
+	if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
+		v |= 1<<IEEE80211_CIPHER_TKIP;
+	if (conf->wpa_pairwise & WPA_CIPHER_NONE)
+		v |= 1<<IEEE80211_CIPHER_NONE;
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		"%s: pairwise key ciphers=0x%x\n", __func__, v);
+	if (set80211param(drv, IEEE80211_PARAM_UCASTCIPHERS, v)) {
+		printf("Unable to set pairwise key ciphers to 0x%x\n", v);
+		return -1;
+	}
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		"%s: key management algorithms=0x%x\n",
+		__func__, conf->wpa_key_mgmt);
+	if (set80211param(drv, IEEE80211_PARAM_KEYMGTALGS, conf->wpa_key_mgmt)) {
+		printf("Unable to set key management algorithms to 0x%x\n",
+			conf->wpa_key_mgmt);
+		return -1;
+	}
+
+	v = 0;
+	if (conf->rsn_preauth)
+		v |= BIT(0);
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		"%s: rsn capabilities=0x%x\n", __func__, conf->rsn_preauth);
+	if (set80211param(drv, IEEE80211_PARAM_RSNCAPS, v)) {
+		printf("Unable to set RSN capabilities to 0x%x\n", v);
+		return -1;
+	}
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		"%s: enable WPA= 0x%x\n", __func__, conf->wpa);
+	if (set80211param(drv, IEEE80211_PARAM_WPA, conf->wpa)) {
+		printf("Unable to set WPA to %u\n", conf->wpa);
+		return -1;
+	}
+	return 0;
+}
+
+
+static int
+madwifi_set_iface_flags(void *priv, int dev_up)
+{
+	struct madwifi_driver_data *drv = priv;
+	hostapd *hapd = drv->hapd;
+	struct ifreq ifr;
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_VERBOSE,
+		"%s: dev_up=%d\n", __func__, dev_up);
+
+	if (drv->ioctl_sock < 0)
+		return -1;
+
+	memset(&ifr, 0, sizeof(ifr));
+	snprintf(ifr.ifr_name, IFNAMSIZ, "%s", drv->iface);
+
+	if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
+		perror("ioctl[SIOCGIFFLAGS]");
+		return -1;
+	}
+
+	if (dev_up)
+		ifr.ifr_flags |= IFF_UP;
+	else
+		ifr.ifr_flags &= ~IFF_UP;
+
+	if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
+		perror("ioctl[SIOCSIFFLAGS]");
+		return -1;
+	}
+
+	if (dev_up) {
+		memset(&ifr, 0, sizeof(ifr));
+		snprintf(ifr.ifr_name, IFNAMSIZ, "%s", drv->iface);
+		ifr.ifr_mtu = HOSTAPD_MTU;
+		if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
+			perror("ioctl[SIOCSIFMTU]");
+			printf("Setting MTU failed - trying to survive with "
+			       "current value\n");
+		}
+	}
+
+	return 0;
+}
+
+static int
+madwifi_set_ieee8021x(void *priv, int enabled)
+{
+	struct madwifi_driver_data *drv = priv;
+	hostapd *hapd = drv->hapd;
+	struct hostapd_config *conf = hapd->conf;
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_VERBOSE,
+		"%s: enabled=%d\n", __func__, enabled);
+
+	if (!enabled) {
+		/* XXX restore state */
+		return set80211param(priv, IEEE80211_PARAM_AUTHMODE,
+			IEEE80211_AUTH_AUTO);
+	}
+	if (!conf->wpa && !conf->ieee802_1x) {
+		hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
+			HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
+		return -1;
+	}
+	if (conf->wpa && madwifi_configure_wpa(drv) != 0) {
+		hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
+			HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
+		return -1;
+	}
+	if (set80211param(priv, IEEE80211_PARAM_AUTHMODE,
+		(conf->wpa ?  IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
+		hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
+			HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
+		return -1;
+	}
+	return madwifi_set_iface_flags(priv, 1);
+}
+
+static int
+madwifi_set_privacy(void *priv, int enabled)
+{
+	struct madwifi_driver_data *drv = priv;
+	hostapd *hapd = drv->hapd;
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		"%s: enabled=%d\n", __func__, enabled);
+
+	return set80211param(priv, IEEE80211_PARAM_PRIVACY, enabled);
+}
+
+static int
+madwifi_set_sta_authorized(void *priv, u8 *addr, int authorized)
+{
+	struct madwifi_driver_data *drv = priv;
+	hostapd *hapd = drv->hapd;
+	struct ieee80211req_mlme mlme;
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_VERBOSE,
+		"%s: addr=%s authorized=%d\n",
+		__func__, ether_sprintf(addr), authorized);
+
+	if (authorized)
+		mlme.im_op = IEEE80211_MLME_AUTHORIZE;
+	else
+		mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
+	mlme.im_reason = 0;
+	memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
+	return set80211priv(priv, IEEE80211_IOCTL_SETMLME, &mlme,
+			    sizeof(mlme));
+}
+
+static int
+madwifi_del_key(void *priv, unsigned char *addr, int key_idx)
+{
+	struct madwifi_driver_data *drv = priv;
+	hostapd *hapd = drv->hapd;
+	struct ieee80211req_del_key wk;
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		"%s: addr=%s key_idx=%d\n",
+		__func__, ether_sprintf(addr), key_idx);
+
+	memset(&wk, 0, sizeof(wk));
+	if (addr != NULL) {
+		memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
+		wk.idk_keyix = (u8) IEEE80211_KEYIX_NONE;
+	} else {
+		wk.idk_keyix = key_idx;
+	}
+
+	return set80211priv(priv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk));
+}
+
+static int
+madwifi_set_key(void *priv, const char *alg,
+	     unsigned char *addr, int key_idx,
+	     u8 *key, size_t key_len)
+{
+	struct madwifi_driver_data *drv = priv;
+	hostapd *hapd = drv->hapd;
+	struct ieee80211req_key wk;
+	u_int8_t cipher;
+
+	if (strcmp(alg, "none") == 0)
+		return madwifi_del_key(priv, addr, key_idx);
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		"%s: alg=%s addr=%s key_idx=%d\n",
+		__func__, alg, ether_sprintf(addr), key_idx);
+
+	if (strcmp(alg, "WEP") == 0)
+		cipher = IEEE80211_CIPHER_WEP;
+	else if (strcmp(alg, "TKIP") == 0)
+		cipher = IEEE80211_CIPHER_TKIP;
+	else if (strcmp(alg, "CCMP") == 0)
+		cipher = IEEE80211_CIPHER_AES_CCM;
+	else {
+		printf("%s: unknown/unsupported algorithm %s\n",
+			__func__, alg);
+		return -1;
+	}
+
+	if (key_len > sizeof(wk.ik_keydata)) {
+		printf("%s: key length %lu too big\n", __func__,
+		       (unsigned long) key_len);
+		return -3;
+	}
+
+	memset(&wk, 0, sizeof(wk));
+	wk.ik_type = cipher;
+	wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
+	if (addr == NULL) {
+		memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
+		wk.ik_keyix = key_idx;
+		wk.ik_flags |= IEEE80211_KEY_DEFAULT;
+	} else {
+		memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
+		wk.ik_keyix = IEEE80211_KEYIX_NONE;
+	}
+	wk.ik_keylen = key_len;
+	memcpy(wk.ik_keydata, key, key_len);
+
+	return set80211priv(priv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk));
+}
+
+
+static int
+madwifi_get_seqnum(void *priv, u8 *addr, int idx, u8 *seq)
+{
+	struct madwifi_driver_data *drv = priv;
+	hostapd *hapd = drv->hapd;
+	struct ieee80211req_key wk;
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		"%s: addr=%s idx=%d\n", __func__, ether_sprintf(addr), idx);
+
+	memset(&wk, 0, sizeof(wk));
+	if (addr == NULL)
+		memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
+	else
+		memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
+	wk.ik_keyix = idx;
+
+	if (set80211priv(priv, IEEE80211_IOCTL_GETKEY, &wk, sizeof(wk))) {
+		printf("Failed to get encryption.\n");
+		return -1;
+	}
+
+#ifdef WORDS_BIGENDIAN
+	{
+		/*
+		 * wk.ik_keytsc is in host byte order (big endian), need to
+		 * swap it to match with the byte order used in WPA.
+		 */
+		int i;
+		u8 tmp[WPA_KEY_RSC_LEN];
+		memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
+		for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
+			seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
+		}
+	}
+#else /* WORDS_BIGENDIAN */
+	memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
+#endif /* WORDS_BIGENDIAN */
+	return 0;
+}
+
+
+static int 
+madwifi_flush(void *priv)
+{
+#ifdef MADWIFI_BSD
+	u8 allsta[IEEE80211_ADDR_LEN];
+	memset(allsta, 0xff, IEEE80211_ADDR_LEN);
+	return madwifi_sta_deauth(priv, allsta, IEEE80211_REASON_AUTH_LEAVE);
+#else /* MADWIFI_BSD */
+	return 0;		/* XXX */
+#endif /* MADWIFI_BSD */
+}
+
+
+static int
+madwifi_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
+					u8 *addr)
+{
+	struct madwifi_driver_data *drv = priv;
+
+#ifdef MADWIFI_BSD
+	struct ieee80211req_sta_stats stats;
+
+	memset(data, 0, sizeof(*data));
+
+	/*
+	 * Fetch statistics for station from the system.
+	 */
+	memset(&stats, 0, sizeof(stats));
+	memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
+	if (set80211priv(drv, IEEE80211_IOCTL_GETSTASTATS, &stats,
+			 sizeof(stats))) {
+		if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
+			memcpy(data, &drv->acct_data, sizeof(*data));
+			return 0;
+		}
+
+		printf("Failed to get station stats information element.\n");
+		return -1;
+	}
+
+	data->rx_packets = stats.is_stats.ns_rx_data;
+	data->rx_bytes = stats.is_stats.ns_rx_bytes;
+	data->tx_packets = stats.is_stats.ns_tx_data;
+	data->tx_bytes = stats.is_stats.ns_tx_bytes;
+	return 0;
+
+#else /* MADWIFI_BSD */
+
+	char buf[1024], line[128], *pos;
+	FILE *f;
+	unsigned long val;
+
+	memset(data, 0, sizeof(*data));
+	snprintf(buf, sizeof(buf), "/proc/net/madwifi/%s/" MACSTR,
+		 drv->iface, MAC2STR(addr));
+
+	f = fopen(buf, "r");
+	if (!f) {
+		if (memcmp(addr, drv->acct_mac, ETH_ALEN) != 0)
+			return -1;
+		memcpy(data, &drv->acct_data, sizeof(*data));
+		return 0;
+	}
+	/* Need to read proc file with in one piece, so use large enough
+	 * buffer. */
+	setbuffer(f, buf, sizeof(buf));
+
+	while (fgets(line, sizeof(line), f)) {
+		pos = strchr(line, '=');
+		if (!pos)
+			continue;
+		*pos++ = '\0';
+		val = strtoul(pos, NULL, 10);
+		if (strcmp(line, "rx_packets") == 0)
+			data->rx_packets = val;
+		else if (strcmp(line, "tx_packets") == 0)
+			data->tx_packets = val;
+		else if (strcmp(line, "rx_bytes") == 0)
+			data->rx_bytes = val;
+		else if (strcmp(line, "tx_bytes") == 0)
+			data->tx_bytes = val;
+	}
+
+	fclose(f);
+
+	return 0;
+#endif /* MADWIFI_BSD */
+}
+
+
+static int
+madwifi_sta_clear_stats(void *priv, u8 *addr)
+{
+#ifdef MADWIFI_BSD
+	struct madwifi_driver_data *drv = priv;
+	struct hostapd_data *hapd = drv->hapd;
+	struct ieee80211req_mlme mlme;
+	
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "%s: addr=%s\n",
+		      __func__, ether_sprintf(addr));
+
+	mlme.im_op = IEEE80211_MLME_CLEAR_STATS;
+	memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
+	return set80211priv(priv, IEEE80211_IOCTL_SETMLME, &mlme,
+			    sizeof(mlme));
+#else /* MADWIFI_BSD */
+	return 0; /* FIX */
+#endif /* MADWIFI_BSD */
+}
+
+
+static int
+madwifi_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
+{
+	/*
+	 * Do nothing; we setup parameters at startup that define the
+	 * contents of the beacon information element.
+	 */
+	return 0;
+}
+
+static int
+madwifi_sta_deauth(void *priv, u8 *addr, int reason_code)
+{
+	struct madwifi_driver_data *drv = priv;
+	hostapd *hapd = drv->hapd;
+	struct ieee80211req_mlme mlme;
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		"%s: addr=%s reason_code=%d\n",
+		__func__, ether_sprintf(addr), reason_code);
+
+	mlme.im_op = IEEE80211_MLME_DEAUTH;
+	mlme.im_reason = reason_code;
+	memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
+	return set80211priv(priv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
+}
+
+static int
+madwifi_sta_disassoc(void *priv, u8 *addr, int reason_code)
+{
+	struct madwifi_driver_data *drv = priv;
+	hostapd *hapd = drv->hapd;
+	struct ieee80211req_mlme mlme;
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+		"%s: addr=%s reason_code=%d\n",
+		__func__, ether_sprintf(addr), reason_code);
+
+	mlme.im_reason = reason_code;
+	memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
+	return set80211priv(priv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
+}
+
+static int
+madwifi_del_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
+{
+	struct hostapd_data *hapd = drv->hapd;
+	struct sta_info *sta;
+
+	hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
+		HOSTAPD_LEVEL_INFO, "deassociated");
+
+	sta = ap_get_sta(hapd, addr);
+	if (sta != NULL) {
+		sta->flags &= ~WLAN_STA_ASSOC;
+		wpa_sm_event(hapd, sta, WPA_DISASSOC);
+		sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
+		ieee802_1x_set_port_enabled(hapd, sta, 0);
+		ap_free_sta(hapd, sta);
+	}
+	return 0;
+}
+
+static int
+madwifi_process_wpa_ie(struct madwifi_driver_data *drv, struct sta_info *sta)
+{
+	struct hostapd_data *hapd = drv->hapd;
+	struct ieee80211req_wpaie ie;
+	int ielen, res;
+
+	/*
+	 * Fetch negotiated WPA/RSN parameters from the system.
+	 */
+	memset(&ie, 0, sizeof(ie));
+	memcpy(ie.wpa_macaddr, sta->addr, IEEE80211_ADDR_LEN);
+	if (set80211priv(drv, IEEE80211_IOCTL_GETWPAIE, &ie, sizeof(ie))) {
+		printf("Failed to get WPA/RSN information element.\n");
+		return -1;		/* XXX not right */
+	}
+	ielen = ie.wpa_ie[1];
+	if (ielen == 0) {
+		printf("No WPA/RSN information element for station!?\n");
+		return -1;		/* XXX not right */
+	}
+	ielen += 2;
+	res = wpa_validate_wpa_ie(hapd, sta, ie.wpa_ie, ielen,
+			ie.wpa_ie[0] == WLAN_EID_RSN ?
+			    HOSTAPD_WPA_VERSION_WPA2 : HOSTAPD_WPA_VERSION_WPA);
+	if (res != WPA_IE_OK) {
+		printf("WPA/RSN information element rejected? (res %u)\n", res);
+		return -1;
+	}
+	free(sta->wpa_ie);
+	sta->wpa_ie = malloc(ielen);
+	if (sta->wpa_ie == NULL) {
+		printf("No memory to save WPA/RSN information element!\n");
+		return -1;
+	}
+	memcpy(sta->wpa_ie, ie.wpa_ie, ielen);
+	sta->wpa_ie_len = ielen;
+	return 0;
+}
+
+static int
+madwifi_new_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
+{
+	struct hostapd_data *hapd = drv->hapd;
+	struct sta_info *sta;
+	int new_assoc;
+
+	hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
+		HOSTAPD_LEVEL_INFO, "associated");
+
+	sta = ap_get_sta(hapd, addr);
+	if (sta) {
+		accounting_sta_stop(hapd, sta);
+	} else {
+		sta = ap_sta_add(hapd, addr);
+		if (sta == NULL)
+			return -1;
+	}
+
+	if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
+		/* Cached accounting data is not valid anymore. */
+		memset(drv->acct_mac, 0, ETH_ALEN);
+		memset(&drv->acct_data, 0, sizeof(drv->acct_data));
+	}
+	accounting_sta_get_id(hapd, sta);
+
+	if (hapd->conf->wpa) {
+		if (madwifi_process_wpa_ie(drv, sta))
+			return -1;
+	} else {
+		free(sta->wpa_ie);
+		sta->wpa_ie = NULL;
+		sta->wpa_ie_len = 0;
+	}
+
+	/*
+	 * Now that the internal station state is setup
+	 * kick the authenticator into action.
+	 */
+	new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
+	sta->flags |= WLAN_STA_ASSOC;
+	wpa_sm_event(hapd, sta, WPA_ASSOC);
+	hostapd_new_assoc_sta(hapd, sta, !new_assoc);
+	ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
+	return 0;
+}
+
+static void
+madwifi_wireless_event_wireless_custom(struct madwifi_driver_data *drv,
+				       char *custom)
+{
+	struct hostapd_data *hapd = drv->hapd;
+
+	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "Custom wireless event: '%s'\n",
+		      custom);
+
+	if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
+		char *pos;
+		u8 addr[ETH_ALEN];
+		pos = strstr(custom, "addr=");
+		if (pos == NULL) {
+			HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+				      "MLME-MICHAELMICFAILURE.indication "
+				      "without sender address ignored\n");
+			return;
+		}
+		pos += 5;
+		if (hwaddr_aton(pos, addr) == 0) {
+			ieee80211_michael_mic_failure(drv->hapd, addr, 1);
+		} else {
+			HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+				      "MLME-MICHAELMICFAILURE.indication "
+				      "with invalid MAC address");
+		}
+	} else if (strncmp(custom, "STA-TRAFFIC-STAT", 16) == 0) {
+		char *key, *value;
+		u32 val;
+		key = custom;
+		while ((key = strchr(key, '\n')) != NULL) {
+			key++;
+			value = strchr(key, '=');
+			if (value == NULL)
+				continue;
+			*value++ = '\0';
+			val = strtoul(value, NULL, 10);
+			if (strcmp(key, "mac") == 0)
+				hwaddr_aton(value, drv->acct_mac);
+			else if (strcmp(key, "rx_packets") == 0)
+				drv->acct_data.rx_packets = val;
+			else if (strcmp(key, "tx_packets") == 0)
+				drv->acct_data.tx_packets = val;
+			else if (strcmp(key, "rx_bytes") == 0)
+				drv->acct_data.rx_bytes = val;
+			else if (strcmp(key, "tx_bytes") == 0)
+				drv->acct_data.tx_bytes = val;
+			key = value;
+		}
+	}
+}
+
+static void
+madwifi_wireless_event_wireless(struct madwifi_driver_data *drv,
+					    char *data, int len)
+{
+	struct hostapd_data *hapd = drv->hapd;
+	struct iw_event iwe_buf, *iwe = &iwe_buf;
+	char *pos, *end, *custom, *buf;
+
+	pos = data;
+	end = data + len;
+
+	while (pos + IW_EV_LCP_LEN <= end) {
+		/* Event data may be unaligned, so make a local, aligned copy
+		 * before processing. */
+		memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_VERBOSE, "Wireless event: "
+			      "cmd=0x%x len=%d\n", iwe->cmd, iwe->len);
+		if (iwe->len <= IW_EV_LCP_LEN)
+			return;
+
+		custom = pos + IW_EV_POINT_LEN;
+		if (drv->we_version > 18 &&
+		    (iwe->cmd == IWEVMICHAELMICFAILURE ||
+		     iwe->cmd == IWEVCUSTOM)) {
+			/* WE-19 removed the pointer from struct iw_point */
+			char *dpos = (char *) &iwe_buf.u.data.length;
+			int dlen = dpos - (char *) &iwe_buf;
+			memcpy(dpos, pos + IW_EV_LCP_LEN,
+			       sizeof(struct iw_event) - dlen);
+		} else {
+			memcpy(&iwe_buf, pos, sizeof(struct iw_event));
+			custom += IW_EV_POINT_OFF;
+		}
+
+		switch (iwe->cmd) {
+		case IWEVEXPIRED:
+			madwifi_del_sta(drv, iwe->u.addr.sa_data);
+			break;
+		case IWEVREGISTERED:
+			madwifi_new_sta(drv, iwe->u.addr.sa_data);
+			break;
+		case IWEVCUSTOM:
+			if (custom + iwe->u.data.length > end)
+				return;
+			buf = malloc(iwe->u.data.length + 1);
+			if (buf == NULL)
+				return;		/* XXX */
+			memcpy(buf, custom, iwe->u.data.length);
+			buf[iwe->u.data.length] = '\0';
+			madwifi_wireless_event_wireless_custom(drv, buf);
+			free(buf);
+			break;
+		}
+
+		pos += iwe->len;
+	}
+}
+
+
+static void
+madwifi_wireless_event_rtm_newlink(struct madwifi_driver_data *drv,
+					       struct nlmsghdr *h, int len)
+{
+	struct ifinfomsg *ifi;
+	int attrlen, nlmsg_len, rta_len;
+	struct rtattr * attr;
+
+	if (len < sizeof(*ifi))
+		return;
+
+	ifi = NLMSG_DATA(h);
+
+	if (ifi->ifi_index != drv->ifindex)
+		return;
+
+	nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
+
+	attrlen = h->nlmsg_len - nlmsg_len;
+	if (attrlen < 0)
+		return;
+
+	attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
+
+	rta_len = RTA_ALIGN(sizeof(struct rtattr));
+	while (RTA_OK(attr, attrlen)) {
+		if (attr->rta_type == IFLA_WIRELESS) {
+			madwifi_wireless_event_wireless(
+				drv, ((char *) attr) + rta_len,
+				attr->rta_len - rta_len);
+		}
+		attr = RTA_NEXT(attr, attrlen);
+	}
+}
+
+
+static void
+madwifi_wireless_event_receive(int sock, void *eloop_ctx, void *sock_ctx)
+{
+	char buf[256];
+	int left;
+	struct sockaddr_nl from;
+	socklen_t fromlen;
+	struct nlmsghdr *h;
+	struct madwifi_driver_data *drv = eloop_ctx;
+
+	fromlen = sizeof(from);
+	left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
+			(struct sockaddr *) &from, &fromlen);
+	if (left < 0) {
+		if (errno != EINTR && errno != EAGAIN)
+			perror("recvfrom(netlink)");
+		return;
+	}
+
+	h = (struct nlmsghdr *) buf;
+	while (left >= sizeof(*h)) {
+		int len, plen;
+
+		len = h->nlmsg_len;
+		plen = len - sizeof(*h);
+		if (len > left || plen < 0) {
+			printf("Malformed netlink message: "
+			       "len=%d left=%d plen=%d\n",
+			       len, left, plen);
+			break;
+		}
+
+		switch (h->nlmsg_type) {
+		case RTM_NEWLINK:
+			madwifi_wireless_event_rtm_newlink(drv, h, plen);
+			break;
+		}
+
+		len = NLMSG_ALIGN(len);
+		left -= len;
+		h = (struct nlmsghdr *) ((char *) h + len);
+	}
+
+	if (left > 0) {
+		printf("%d extra bytes in the end of netlink message\n", left);
+	}
+}
+
+
+static int
+madwifi_get_we_version(struct madwifi_driver_data *drv)
+{
+	struct iw_range *range;
+	struct iwreq iwr;
+	int minlen;
+	size_t buflen;
+
+	drv->we_version = 0;
+
+	/*
+	 * Use larger buffer than struct iw_range in order to allow the
+	 * structure to grow in the future.
+	 */
+	buflen = sizeof(struct iw_range) + 500;
+	range = malloc(buflen);
+	if (range == NULL)
+		return -1;
+	memset(range, 0, buflen);
+
+	memset(&iwr, 0, sizeof(iwr));
+	strncpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
+	iwr.u.data.pointer = (caddr_t) range;
+	iwr.u.data.length = buflen;
+
+	minlen = ((char *) &range->enc_capa) - (char *) range +
+		sizeof(range->enc_capa);
+
+	if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
+		perror("ioctl[SIOCGIWRANGE]");
+		free(range);
+		return -1;
+	} else if (iwr.u.data.length >= minlen &&
+		   range->we_version_compiled >= 18) {
+		wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
+			   "WE(source)=%d enc_capa=0x%x",
+			   range->we_version_compiled,
+			   range->we_version_source,
+			   range->enc_capa);
+		drv->we_version = range->we_version_compiled;
+	}
+
+	free(range);
+	return 0;
+}
+
+
+static int
+madwifi_wireless_event_init(void *priv)
+{
+	struct madwifi_driver_data *drv = priv;
+	int s;
+	struct sockaddr_nl local;
+
+	madwifi_get_we_version(drv);
+
+	drv->wext_sock = -1;
+
+	s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+	if (s < 0) {
+		perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
+		return -1;
+	}
+
+	memset(&local, 0, sizeof(local));
+	local.nl_family = AF_NETLINK;
+	local.nl_groups = RTMGRP_LINK;
+	if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
+		perror("bind(netlink)");
+		close(s);
+		return -1;
+	}
+
+	eloop_register_read_sock(s, madwifi_wireless_event_receive, drv, NULL);
+	drv->wext_sock = s;
+
+	return 0;
+}
+
+
+static void
+madwifi_wireless_event_deinit(void *priv)
+{
+	struct madwifi_driver_data *drv = priv;
+
+	if (drv != NULL) {
+		if (drv->wext_sock < 0)
+			return;
+		eloop_unregister_read_sock(drv->wext_sock);
+		close(drv->wext_sock);
+	}
+}
+
+
+static int
+madwifi_send_eapol(void *priv, u8 *addr, u8 *data, size_t data_len, int encrypt)
+{
+	struct madwifi_driver_data *drv = priv;
+	hostapd *hapd = drv->hapd;
+	unsigned char buf[3000];
+	unsigned char *bp = buf;
+	struct l2_ethhdr *eth;
+	size_t len;
+	int status;
+
+	/*
+	 * Prepend the Etherent header.  If the caller left us
+	 * space at the front we could just insert it but since
+	 * we don't know we copy to a local buffer.  Given the frequency
+	 * and size of frames this probably doesn't matter.
+	 */
+	len = data_len + sizeof(struct l2_ethhdr);
+	if (len > sizeof(buf)) {
+		bp = malloc(len);
+		if (bp == NULL) {
+			printf("EAPOL frame discarded, cannot malloc temp "
+			       "buffer of size %lu!\n", (unsigned long) len);
+			return -1;
+		}
+	}
+	eth = (struct l2_ethhdr *) bp;
+	memcpy(eth->h_dest, addr, ETH_ALEN);
+	memcpy(eth->h_source, drv->hapd->own_addr, ETH_ALEN);
+	eth->h_proto = htons(ETH_P_EAPOL);
+	memcpy(eth+1, data, data_len);
+
+	if (HOSTAPD_DEBUG_COND(HOSTAPD_DEBUG_MSGDUMPS))
+		hostapd_hexdump("TX EAPOL", bp, len);
+
+	status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
+
+	if (bp != buf)
+		free(bp);
+	return status;
+}
+
+static void
+handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
+{
+	struct madwifi_driver_data *drv = ctx;
+	hostapd *hapd = drv->hapd;
+	struct sta_info *sta;
+
+	sta = ap_get_sta(hapd, src_addr);
+	if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
+		printf("Data frame from not associated STA %s\n",
+		       ether_sprintf(src_addr));
+		/* XXX cannot happen */
+		return;
+	}
+	ieee802_1x_receive(hapd, src_addr, buf + sizeof(struct l2_ethhdr),
+			   len - sizeof(struct l2_ethhdr));
+}
+
+static int
+madwifi_init(struct hostapd_data *hapd)
+{
+	struct madwifi_driver_data *drv;
+	struct ifreq ifr;
+	struct iwreq iwr;
+
+	drv = malloc(sizeof(struct madwifi_driver_data));
+	if (drv == NULL) {
+		printf("Could not allocate memory for madwifi driver data\n");
+		goto bad;
+	}
+
+	memset(drv, 0, sizeof(*drv));
+	drv->ops = madwifi_driver_ops;
+	drv->hapd = hapd;
+	drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
+	if (drv->ioctl_sock < 0) {
+		perror("socket[PF_INET,SOCK_DGRAM]");
+		goto bad;
+	}
+	memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
+
+	memset(&ifr, 0, sizeof(ifr));
+	snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s", drv->iface);
+	if (ioctl(drv->ioctl_sock, SIOCGIFINDEX, &ifr) != 0) {
+		perror("ioctl(SIOCGIFINDEX)");
+		goto bad;
+	}
+	drv->ifindex = ifr.ifr_ifindex;
+
+	drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
+					handle_read, drv, 1);
+	if (drv->sock_xmit == NULL)
+		goto bad;
+	if (l2_packet_get_own_addr(drv->sock_xmit, hapd->own_addr))
+		goto bad;
+	if (hapd->conf->bridge[0] != '\0') {
+		HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
+			"Configure bridge %s for EAPOL traffic.\n",
+			hapd->conf->bridge);
+		drv->sock_recv = l2_packet_init(hapd->conf->bridge, NULL,
+						ETH_P_EAPOL, handle_read, drv,
+						0);
+		if (drv->sock_recv == NULL)
+			goto bad;
+	} else
+		drv->sock_recv = drv->sock_xmit;
+
+	memset(&iwr, 0, sizeof(iwr));
+	strncpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
+
+	iwr.u.mode = IW_MODE_MASTER;
+
+	if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0) {
+		perror("ioctl[SIOCSIWMODE]");
+		printf("Could not set interface to master mode!\n");
+		goto bad;
+	}
+
+	madwifi_set_iface_flags(drv, 0);	/* mark down during setup */
+
+	hapd->driver = &drv->ops;
+	return 0;
+bad:
+	if (drv->sock_xmit != NULL)
+		l2_packet_deinit(drv->sock_xmit);
+	if (drv->ioctl_sock >= 0)
+		close(drv->ioctl_sock);
+	if (drv != NULL)
+		free(drv);
+	return -1;
+}
+
+
+static void
+madwifi_deinit(void *priv)
+{
+	struct madwifi_driver_data *drv = priv;
+
+	drv->hapd->driver = NULL;
+
+	(void) madwifi_set_iface_flags(drv, 0);
+	if (drv->ioctl_sock >= 0)
+		close(drv->ioctl_sock);
+	if (drv->sock_recv != NULL && drv->sock_recv != drv->sock_xmit)
+		l2_packet_deinit(drv->sock_recv);
+	if (drv->sock_xmit != NULL)
+		l2_packet_deinit(drv->sock_xmit);
+	free(drv);
+}
+
+static int
+madwifi_set_ssid(void *priv, u8 *buf, int len)
+{
+	struct madwifi_driver_data *drv = priv;
+	struct iwreq iwr;
+
+	memset(&iwr, 0, sizeof(iwr));
+	strncpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
+	iwr.u.essid.flags = 1; /* SSID active */
+	iwr.u.essid.pointer = (caddr_t) buf;
+	iwr.u.essid.length = len + 1;
+
+	if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
+		perror("ioctl[SIOCSIWESSID]");
+		printf("len=%d\n", len);
+		return -1;
+	}
+	return 0;
+}
+
+static int
+madwifi_get_ssid(void *priv, u8 *buf, int len)
+{
+	struct madwifi_driver_data *drv = priv;
+	struct iwreq iwr;
+	int ret = 0;
+
+	memset(&iwr, 0, sizeof(iwr));
+	strncpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
+	iwr.u.essid.pointer = (caddr_t) buf;
+	iwr.u.essid.length = len;
+
+	if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
+		perror("ioctl[SIOCGIWESSID]");
+		ret = -1;
+	} else
+		ret = iwr.u.essid.length;
+
+	return ret;
+}
+
+static const struct driver_ops madwifi_driver_ops = {
+	.name			= "madwifi",
+	.init			= madwifi_init,
+	.deinit			= madwifi_deinit,
+	.set_ieee8021x		= madwifi_set_ieee8021x,
+	.set_privacy		= madwifi_set_privacy,
+	.set_encryption		= madwifi_set_key,
+	.get_seqnum		= madwifi_get_seqnum,
+	.flush			= madwifi_flush,
+	.set_generic_elem	= madwifi_set_opt_ie,
+	.wireless_event_init	= madwifi_wireless_event_init,
+	.wireless_event_deinit	= madwifi_wireless_event_deinit,
+	.set_sta_authorized	= madwifi_set_sta_authorized,
+	.read_sta_data		= madwifi_read_sta_driver_data,
+	.send_eapol		= madwifi_send_eapol,
+	.sta_disassoc		= madwifi_sta_disassoc,
+	.sta_deauth		= madwifi_sta_deauth,
+	.set_ssid		= madwifi_set_ssid,
+	.get_ssid		= madwifi_get_ssid,
+	.sta_clear_stats        = madwifi_sta_clear_stats,
+};
+
+void madwifi_driver_register(void)
+{
+	driver_register(madwifi_driver_ops.name, &madwifi_driver_ops);
+}