freebsd-nq/usr.sbin/wpa/hostapd/driver_freebsd.c

/*
 * Host AP - driver interaction with BSD net80211 layer
 * Copyright (c) 2004, Sam Leffler <sam@errno.com>
 * Copyright (c) 2004, 2Wire, Inc
 *
 * 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.
 *
 * $FreeBSD$
 */

#include "includes.h"
#include <sys/ioctl.h>

#include "common.h"
#include "driver.h"
#include "eloop.h"
#include "common/ieee802_11_defs.h"
#include "common/wpa_common.h"

#include <sys/socket.h>
#include <net/if.h>
#include <net/route.h>
#include <netinet/in.h>

#include <net80211/ieee80211_ioctl.h>
#include <net80211/ieee80211_freebsd.h>

#include "l2_packet/l2_packet.h"

struct bsd_driver_data {
	struct hostapd_data *hapd;	/* back pointer */

	int	sock;			/* open socket for 802.11 ioctls */
	struct l2_packet_data *sock_xmit;/* raw packet xmit socket */
	int	route;			/* routing socket for events */
	char	ifname[IFNAMSIZ+1];	/* interface name */
	unsigned int ifindex;		/* interface index */
	void	*ctx;
	struct wpa_driver_capa capa;	/* driver capability */
	int	is_ap;			/* Access point mode */
	int	prev_roaming;	/* roaming state to restore on deinit */
	int	prev_privacy;	/* privacy state to restore on deinit */
	int	prev_wpa;	/* wpa state to restore on deinit */
};

static int
bsd_set80211(void *priv, int op, int val, const void *arg, int arg_len)
{
	struct bsd_driver_data *drv = priv;
	struct ieee80211req ireq;

	os_memset(&ireq, 0, sizeof(ireq));
	os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
	ireq.i_type = op;
	ireq.i_val = val;
	ireq.i_data = (void *) arg;
	ireq.i_len = arg_len;

	if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
		wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, val=%u, "
			   "arg_len=%u]: %s", op, val, arg_len,
			   strerror(errno));
		return -1;
	}
	return 0;
}

static int
bsd_get80211(void *priv, struct ieee80211req *ireq, int op, void *arg,
	     int arg_len)
{
	struct bsd_driver_data *drv = priv;

	os_memset(ireq, 0, sizeof(*ireq));
	os_strlcpy(ireq->i_name, drv->ifname, sizeof(ireq->i_name));
	ireq->i_type = op;
	ireq->i_len = arg_len;
	ireq->i_data = arg;

	if (ioctl(drv->sock, SIOCG80211, ireq) < 0) {
		wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, "
			   "arg_len=%u]: %s", op, arg_len, strerror(errno));
		return -1;
	}
	return 0;
}

static int
get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
{
	struct ieee80211req ireq;

	if (bsd_get80211(drv, &ireq, op, arg, arg_len) < 0)
		return -1;
	return ireq.i_len;
}

static int
set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
{
	return bsd_set80211(drv, op, 0, arg, arg_len);
}

static int
set80211param(struct bsd_driver_data *drv, int op, int arg)
{
	return bsd_set80211(drv, op, arg, NULL, 0);
}

static int
bsd_get_ssid(void *priv, u8 *ssid, int len)
{
	struct bsd_driver_data *drv = priv;

	return get80211var(drv, IEEE80211_IOC_SSID, ssid, IEEE80211_NWID_LEN);
}

static int
bsd_set_ssid(void *priv, const u8 *ssid, int ssid_len)
{
	struct bsd_driver_data *drv = priv;

	return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len);
}

static int
bsd_del_key(void *priv, const u8 *addr, int key_idx)
{
	struct ieee80211req_del_key wk;

	os_memset(&wk, 0, sizeof(wk));
	if (addr == NULL) {
		wpa_printf(MSG_DEBUG, "%s: key_idx=%d", __func__, key_idx);
		wk.idk_keyix = key_idx;
	} else {
		wpa_printf(MSG_DEBUG, "%s: addr=" MACSTR, __func__,
			   MAC2STR(addr));
		os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
		wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE;	/* XXX */
	}

	return set80211var(priv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
}

static int
bsd_send_mlme_param(void *priv, const u8 op, const u16 reason, const u8 *addr)
{
	struct ieee80211req_mlme mlme;

	os_memset(&mlme, 0, sizeof(mlme));
	mlme.im_op = op;
	mlme.im_reason = reason;
	os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
	return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
}

static int
bsd_ctrl_iface(void *priv, int enable)
{
	struct bsd_driver_data *drv = priv;
	struct ifreq ifr;

	if (drv->sock < 0)
		return -1;

	os_memset(&ifr, 0, sizeof(ifr));
	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));

	if (ioctl(drv->sock, SIOCGIFFLAGS, &ifr) < 0) {
		perror("ioctl[SIOCGIFFLAGS]");
		return -1;
	}

	if (enable) {
		if ((ifr.ifr_flags & IFF_UP) == IFF_UP)
			return 0;
		ifr.ifr_flags |= IFF_UP;
	} else {
		if ((ifr.ifr_flags & IFF_UP) == 0)
			return 0;
		ifr.ifr_flags &= ~IFF_UP;
	}

	if (ioctl(drv->sock, SIOCSIFFLAGS, &ifr) < 0) {
		perror("ioctl[SIOCSIFFLAGS]");
		return -1;
	}

	return 0;
}

static int
bsd_commit(void *priv)
{
	return bsd_ctrl_iface(priv, 1);
}

static int
bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
	    const unsigned char *addr, int key_idx, int set_tx, const u8 *seq,
	    size_t seq_len, const u8 *key, size_t key_len)
{
	struct ieee80211req_key wk;

	wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d "
		   "seq_len=%zu key_len=%zu", __func__, alg, addr, key_idx,
		   set_tx, seq_len, key_len);

	if (alg == WPA_ALG_NONE) {
		return bsd_del_key(priv, addr, key_idx);
	}

	os_memset(&wk, 0, sizeof(wk));
	switch (alg) {
	case WPA_ALG_WEP:
		wk.ik_type = IEEE80211_CIPHER_WEP;
		break;
	case WPA_ALG_TKIP:
		wk.ik_type = IEEE80211_CIPHER_TKIP;
		break;
	case WPA_ALG_CCMP:
		wk.ik_type = IEEE80211_CIPHER_AES_CCM;
		break;
	default:
		wpa_printf(MSG_ERROR, "%s: unknown alg=%d", __func__, alg);
		return -1;
	}

	wk.ik_flags = IEEE80211_KEY_RECV;
	if (set_tx)
		wk.ik_flags |= IEEE80211_KEY_XMIT;

	if (addr == NULL) {
		os_memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
		wk.ik_keyix = key_idx;
	} else {
		os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
		/*
		 * Deduce whether group/global or unicast key by checking
		 * the address (yech).  Note also that we can only mark global
		 * keys default; doing this for a unicast key is an error.
		 */
		if (os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
			      IEEE80211_ADDR_LEN) == 0) {
			wk.ik_flags |= IEEE80211_KEY_GROUP;
			wk.ik_keyix = key_idx;
		} else {
			wk.ik_keyix = key_idx == 0 ? IEEE80211_KEYIX_NONE :
				key_idx;
		}
	}
	if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
		wk.ik_flags |= IEEE80211_KEY_DEFAULT;
	wk.ik_keylen = key_len;
	os_memcpy(&wk.ik_keyrsc, seq, seq_len);
	os_memcpy(wk.ik_keydata, key, key_len);

	return set80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
}

static int
bsd_configure_wpa(void *priv, struct wpa_bss_params *params)
{
	wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa);
	if (set80211param(priv, IEEE80211_IOC_WPA, params->wpa)) {
		printf("Unable to set WPA to %u\n", params->wpa);
		return -1;
	}
	return 0;
}

static int
bsd_set_ieee8021x(void *priv, struct wpa_bss_params *params)
{
	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);

	if (!params->enabled) {
		/* XXX restore state */
		return set80211param(priv, IEEE80211_IOC_AUTHMODE,
				     IEEE80211_AUTH_AUTO);
	}
	if (!params->wpa && !params->ieee802_1x) {
		wpa_printf(MSG_ERROR, "%s: No 802.1X or WPA enabled",
			   __func__);
		return -1;
	}
	if (params->wpa && bsd_configure_wpa(priv, params) != 0) {
		wpa_printf(MSG_ERROR, "%s: Failed to configure WPA state",
			   __func__);
		return -1;
	}
	if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
		(params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
		wpa_printf(MSG_ERROR, "%s: Failed to enable WPA/802.1X",
			   __func__);
		return -1;
	}
	return 0;
}

static int
bsd_set_sta_authorized(void *priv, const u8 *addr,
		       int total_flags, int flags_or, int flags_and)
{
	int authorized = -1;

	/* For now, only support setting Authorized flag */
	if (flags_or & WPA_STA_AUTHORIZED)
		authorized = 1;
	if (!(flags_and & WPA_STA_AUTHORIZED))
		authorized = 0;

	if (authorized < 0)
		return 0;

	return bsd_send_mlme_param(priv, authorized ?
				   IEEE80211_MLME_AUTHORIZE :
				   IEEE80211_MLME_UNAUTHORIZE, 0, addr);
}

static void
bsd_new_sta(void *priv, void *ctx, u8 addr[IEEE80211_ADDR_LEN])
{
	struct ieee80211req_wpaie ie;
	int ielen = 0;
	u8 *iebuf = NULL;

	/*
	 * Fetch and validate any negotiated WPA/RSN parameters.
	 */
	memset(&ie, 0, sizeof(ie));
	memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
	if (get80211var(priv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
		printf("Failed to get WPA/RSN information element.\n");
		goto no_ie;
	}
	iebuf = ie.wpa_ie;
	ielen = ie.wpa_ie[1];
	if (ielen == 0)
		iebuf = NULL;
	else
		ielen += 2;

no_ie:
	drv_event_assoc(ctx, addr, iebuf, ielen);
}

static int
bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
	       int encrypt, const u8 *own_addr)
{
	struct bsd_driver_data *drv = priv;

	wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", data, data_len);

	return l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, data,
			      data_len);
}

static int
bsd_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
{
	wpa_printf(MSG_DEBUG, "%s: set WPA+RSN ie (len %lu)", __func__,
		   (unsigned long)ie_len);
	return bsd_set80211(priv, IEEE80211_IOC_APPIE, IEEE80211_APPIE_WPA,
			    ie, ie_len);
}

/*
 * Avoid conflicts with hostapd definitions by undefining couple of defines
 * from net80211 header files.
 */
#undef RSN_VERSION
#undef WPA_VERSION
#undef WPA_OUI_TYPE

static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
			  int reason_code);

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;
}

static int
bsd_set_privacy(void *priv, int enabled)
{
	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);

	return set80211param(priv, IEEE80211_IOC_PRIVACY, enabled);
}

static int
bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
	       u8 *seq)
{
	struct ieee80211req_key wk;

	wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
		   __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 (get80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
		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 
bsd_flush(void *priv)
{
	u8 allsta[IEEE80211_ADDR_LEN];

	memset(allsta, 0xff, IEEE80211_ADDR_LEN);
	return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
}


static int
bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
			 const u8 *addr)
{
	struct ieee80211req_sta_stats stats;

	memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
	if (get80211var(priv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats))
	    > 0) {
		/* XXX? do packets counts include non-data frames? */
		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;
}

static int
bsd_sta_clear_stats(void *priv, const u8 *addr)
{
	struct ieee80211req_sta_stats stats;

	wpa_printf(MSG_DEBUG, "%s: addr=%s", __func__, ether_sprintf(addr));

	/* zero station statistics */
	memset(&stats, 0, sizeof(stats));
	memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
	return set80211var(priv, IEEE80211_IOC_STA_STATS, &stats,
			   sizeof(stats));
}

static int
bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
{
	return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
				   addr);
}

static int
bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
		 int reason_code)
{
	return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code,
				   addr);
}

static void
bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
{
	struct bsd_driver_data *drv = ctx;
	char buf[2048];
	struct if_announcemsghdr *ifan;
	struct rt_msghdr *rtm;
	struct ieee80211_michael_event *mic;
	struct ieee80211_join_event *join;
	struct ieee80211_leave_event *leave;
#ifdef CONFIG_DRIVER_RADIUS_ACL
	struct ieee80211_auth_event *auth;
#endif
	int n;
	union wpa_event_data data;

	n = read(sock, buf, sizeof(buf));
	if (n < 0) {
		if (errno != EINTR && errno != EAGAIN)
			perror("read(PF_ROUTE)");
		return;
	}

	rtm = (struct rt_msghdr *) buf;
	if (rtm->rtm_version != RTM_VERSION) {
		wpa_printf(MSG_DEBUG, "Routing message version %d not "
			"understood\n", rtm->rtm_version);
		return;
	}
	ifan = (struct if_announcemsghdr *) rtm;
	if (ifan->ifan_index != drv->ifindex) {
		wpa_printf(MSG_DEBUG, "Discard routing message to if#%d "
			"(not for us %d)\n",
			ifan->ifan_index, drv->ifindex);
		return;
	}
	switch (rtm->rtm_type) {
	case RTM_IEEE80211:
		switch (ifan->ifan_what) {
		case RTM_IEEE80211_ASSOC:
		case RTM_IEEE80211_REASSOC:
		case RTM_IEEE80211_DISASSOC:
		case RTM_IEEE80211_SCAN:
			break;
		case RTM_IEEE80211_LEAVE:
			leave = (struct ieee80211_leave_event *) &ifan[1];
			drv_event_disassoc(drv->hapd, leave->iev_addr);
			break;
		case RTM_IEEE80211_JOIN:
#ifdef RTM_IEEE80211_REJOIN
		case RTM_IEEE80211_REJOIN:
#endif
			join = (struct ieee80211_join_event *) &ifan[1];
			bsd_new_sta(drv, drv->hapd, join->iev_addr);
			break;
		case RTM_IEEE80211_REPLAY:
			/* ignore */
			break;
		case RTM_IEEE80211_MICHAEL:
			mic = (struct ieee80211_michael_event *) &ifan[1];
			wpa_printf(MSG_DEBUG,
				"Michael MIC failure wireless event: "
				"keyix=%u src_addr=" MACSTR, mic->iev_keyix,
				MAC2STR(mic->iev_src));
			os_memset(&data, 0, sizeof(data));
			data.michael_mic_failure.unicast = 1;
			data.michael_mic_failure.src = mic->iev_src;
			wpa_supplicant_event(drv->hapd,
					     EVENT_MICHAEL_MIC_FAILURE, &data);
			break;
#ifdef CONFIG_DRIVER_RADIUS_ACL_NOT_YET
		case RTM_IEEE80211_AUTH:
			auth = (struct ieee80211_auth_event *) &ifan[1];
			wpa_printf(MSG_DEBUG, "802.11 AUTH, STA = " MACSTR,
			    MAC2STR(auth->iev_addr));
			n = hostapd_allowed_address(drv->hapd, auth->iev_addr,
				NULL, 0, NULL, NULL, NULL);
			switch (n) {
			case HOSTAPD_ACL_ACCEPT:
			case HOSTAPD_ACL_REJECT:
				hostapd_set_radius_acl_auth(drv->hapd,
				    auth->iev_addr, n, 0);
				wpa_printf(MSG_DEBUG,
				    "802.11 AUTH, STA = " MACSTR " hostapd says: %s",
				    MAC2STR(auth->iev_addr),
				    (n == HOSTAPD_ACL_ACCEPT ?
					"ACCEPT" : "REJECT" ));
				break;
			case HOSTAPD_ACL_PENDING:
				wpa_printf(MSG_DEBUG,
				    "802.11 AUTH, STA = " MACSTR " pending",
				    MAC2STR(auth->iev_addr));
				break;
			}
			break;
#endif /* CONFIG_DRIVER_RADIUS_ACL */
		}
		break;
	}
}

static void
handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
{
	struct bsd_driver_data *drv = ctx;
	drv_event_eapol_rx(drv->hapd, src_addr, buf, len);
}

static int
bsd_set_countermeasures(void *priv, int enabled)
{
	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
	return set80211param(priv, IEEE80211_IOC_COUNTERMEASURES, enabled);
}

#ifdef CONFIG_DRIVER_RADIUS_ACL_NOT_YET
static int 
bsd_set_radius_acl_auth(void *priv, const u8 *mac, int accepted, 
	u32 session_timeout)
{
	struct bsd_driver_data *drv = priv;
	struct hostapd_data *hapd = drv->hapd;
	struct ieee80211req_mlme mlme;

	switch (accepted) {
	case HOSTAPD_ACL_ACCEPT_TIMEOUT:
		wpa_printf(MSG_DEBUG, "[%s] STA " MACSTR 
			" has been accepted by RADIUS ACL with timeout "
			"of %d.\n", hapd->conf->iface, MAC2STR(mac), 
			session_timeout);
		mlme.im_reason = IEEE80211_STATUS_SUCCESS;
		break;
	case HOSTAPD_ACL_ACCEPT:
		wpa_printf(MSG_DEBUG, "[%s] STA " MACSTR 
			" has been accepted by RADIUS ACL.\n", 
			hapd->conf->iface, MAC2STR(mac));
		mlme.im_reason = IEEE80211_STATUS_SUCCESS;
		break;
	case HOSTAPD_ACL_REJECT:
		wpa_printf(MSG_DEBUG, "[%s] STA " MACSTR 
			" has been rejected by RADIUS ACL.\n", 
			hapd->conf->iface, MAC2STR(mac));
		mlme.im_reason = IEEE80211_STATUS_UNSPECIFIED;
		break;
	default:
		wpa_printf(MSG_ERROR, "[%s] STA " MACSTR 
			" has unknown status (%d) by RADIUS ACL.  "
			"Nothing to do...\n", hapd->conf->iface, 
			MAC2STR(mac), accepted);
		return 0;
	}
	memset(&mlme, 0, sizeof(mlme));
	mlme.im_op = IEEE80211_MLME_AUTH;
	memcpy(mlme.im_macaddr, mac, IEEE80211_ADDR_LEN);
	return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
}

static int
bsd_set_radius_acl_expire(void *priv, const u8 *mac)
{
	struct bsd_driver_data *drv = priv;
	struct hostapd_data *hapd = drv->hapd;

	/*
	 * The expiry of the MAC address from RADIUS ACL cache doesn't mean
	 * that we should kick off the client.  Our current approach doesn't
	 * require adding/removing entries from an allow/deny list; so this
	 * function is likely unnecessary
	 */
	wpa_printf(MSG_DEBUG, "[%s] STA " MACSTR " radius acl cache "
		"expired; nothing to do...", hapd->conf->iface, 
		MAC2STR(mac));
	return 0;
}
#endif /* CONFIG_DRIVER_RADIUS_ACL */

static void *
bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
{
	struct bsd_driver_data *drv;

	drv = os_zalloc(sizeof(struct bsd_driver_data));
	if (drv == NULL) {
		printf("Could not allocate memory for bsd driver data\n");
		goto bad;
	}

	drv->hapd = hapd;
	drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
	if (drv->sock < 0) {
		perror("socket[PF_INET,SOCK_DGRAM]");
		goto bad;
	}
	os_strlcpy(drv->ifname, params->ifname, sizeof(drv->ifname));
	/*
	 * NB: We require the interface name be mappable to an index.
	 *     This implies we do not support having wpa_supplicant
	 *     wait for an interface to appear.  This seems ok; that
	 *     doesn't belong here; it's really the job of devd.
	 *     XXXSCW: devd is FreeBSD-specific.
	 */
	drv->ifindex = if_nametoindex(drv->ifname);
	if (drv->ifindex == 0) {
		printf("%s: interface %s does not exist", __func__,
		       drv->ifname);
		goto bad;
	}

	drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
					handle_read, drv, 0);
	if (drv->sock_xmit == NULL)
		goto bad;
	if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
		goto bad;

	/* mark down during setup */
	if (bsd_ctrl_iface(drv, 0) < 0)
		goto bad;

	drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
	if (drv->route < 0) {
		perror("socket(PF_ROUTE,SOCK_RAW)");
		goto bad;
	}
	eloop_register_read_sock(drv->route, bsd_wireless_event_receive, drv,
				 NULL);

	return drv;
bad:
	if (drv == NULL)
		return NULL;
	if (drv->sock_xmit != NULL)
		l2_packet_deinit(drv->sock_xmit);
	if (drv->sock >= 0)
		close(drv->sock);
	os_free(drv);
	return NULL;
}


static void
bsd_deinit(void *priv)
{
	struct bsd_driver_data *drv = priv;

	if (drv->route >= 0) {
		eloop_unregister_read_sock(drv->route);
		close(drv->route);
	}
	bsd_ctrl_iface(drv, 0);
	if (drv->sock >= 0)
		close(drv->sock);
	if (drv->sock_xmit != NULL)
		l2_packet_deinit(drv->sock_xmit);
	os_free(drv);
}

const struct wpa_driver_ops wpa_driver_bsd_ops = {
	.name			= "bsd",
	.desc			= "BSD 802.11 support",
	.hapd_init		= bsd_init,
	.hapd_deinit		= bsd_deinit,
	.set_privacy		= bsd_set_privacy,
	.get_seqnum		= bsd_get_seqnum,
	.flush			= bsd_flush,
	.read_sta_data		= bsd_read_sta_driver_data,
	.sta_clear_stats	= bsd_sta_clear_stats,
	.sta_disassoc		= bsd_sta_disassoc,
	.sta_deauth		= bsd_sta_deauth,
	.set_key		= bsd_set_key,
	.set_ieee8021x		= bsd_set_ieee8021x,
	.hapd_set_ssid		= bsd_set_ssid,
	.hapd_get_ssid		= bsd_get_ssid,
	.hapd_send_eapol	= bsd_send_eapol,
	.sta_set_flags		= bsd_set_sta_authorized,
	.set_generic_elem	= bsd_set_opt_ie,
	.set_countermeasures	= bsd_set_countermeasures,
	.commit			= bsd_commit,
#ifdef CONFIG_DRIVER_RADIUS_ACL_NOT_YET
	.set_radius_acl_auth	= bsd_set_radius_acl_auth,
	.set_radius_acl_expire	= bsd_set_radius_acl_expire,
#endif
};