text: /*
   * WPA Supplicant - driver interaction with BSD net80211 layer
   * Copyright (c) 2004, Sam Leffler <sam@errno.com>
   * Copyright (c) 2004, 2Wire, Inc
   *
   * This software may be distributed under the terms of the BSD license.
   * See README for more details.
   */
  
  #include "includes.h"
  #include <sys/ioctl.h>
  #include <sys/sysctl.h>
  
  #include "common.h"
  #include "driver.h"
  #include "eloop.h"
  #include "common/ieee802_11_defs.h"
  #include "common/wpa_common.h"
  
  #include <net/if.h>
  #include <net/if_media.h>
  
  #ifdef __NetBSD__
  #include <net/if_ether.h>
  #else
  #include <net/ethernet.h>
  #endif
  #include <net/route.h>
  
  #ifdef __DragonFly__
  #include <netproto/802_11/ieee80211_ioctl.h>
  #include <netproto/802_11/ieee80211_dragonfly.h>
  #else /* __DragonFly__ */
  #ifdef __GLIBC__
  #include <netinet/ether.h>
  #endif /* __GLIBC__ */
  #include <net80211/ieee80211.h>
  #include <net80211/ieee80211_ioctl.h>
  #include <net80211/ieee80211_crypto.h>
  #endif /* __DragonFly__ || __GLIBC__ */
  #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
  #include <net80211/ieee80211_freebsd.h>
  #endif
  #if __NetBSD__
  #include <net80211/ieee80211_netbsd.h>
  #endif
  
  #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 */
  	enum ieee80211_opmode opmode;	/* operation mode */
  	char	*event_buf;
  	size_t	event_buf_len;
  };
  
  /* Generic functions for hostapd and wpa_supplicant */
  
  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;
  #ifdef SIOCG80211NWID
  	struct ieee80211_nwid nwid;
  	struct ifreq ifr;
  
  	os_memset(&ifr, 0, sizeof(ifr));
  	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
  	ifr.ifr_data = (void *)&nwid;
  	if (ioctl(drv->sock, SIOCG80211NWID, &ifr) < 0 ||
  	    nwid.i_len > IEEE80211_NWID_LEN)
  		return -1;
  	os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
  	return nwid.i_len;
  #else
  	return get80211var(drv, IEEE80211_IOC_SSID, ssid, IEEE80211_NWID_LEN);
  #endif
  }
  
  static int
  bsd_set_ssid(void *priv, const u8 *ssid, int ssid_len)
  {
  	struct bsd_driver_data *drv = priv;
  #ifdef SIOCS80211NWID
  	struct ieee80211_nwid nwid;
  	struct ifreq ifr;
  
  	os_memcpy(nwid.i_nwid, ssid, ssid_len);
  	nwid.i_len = ssid_len;
  	os_memset(&ifr, 0, sizeof(ifr));
  	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
  	ifr.ifr_data = (void *)&nwid;
  	return ioctl(drv->sock, SIOCS80211NWID, &ifr);
  #else
  	return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len);
  #endif
  }
  
  static int
  bsd_get_if_media(void *priv)
  {
  	struct bsd_driver_data *drv = priv;
  	struct ifmediareq ifmr;
  
  	os_memset(&ifmr, 0, sizeof(ifmr));
  	os_strlcpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name));
  
  	if (ioctl(drv->sock, SIOCGIFMEDIA, &ifmr) < 0) {
  		wpa_printf(MSG_ERROR, "%s: SIOCGIFMEDIA %s", __func__,
  			   strerror(errno));
  		return -1;
  	}
  
  	return ifmr.ifm_current;
  }
  
  static int
  bsd_set_if_media(void *priv, int media)
  {
  	struct bsd_driver_data *drv = priv;
  	struct ifreq ifr;
  
  	os_memset(&ifr, 0, sizeof(ifr));
  	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
  	ifr.ifr_media = media;
  
  	if (ioctl(drv->sock, SIOCSIFMEDIA, &ifr) < 0) {
  		wpa_printf(MSG_ERROR, "%s: SIOCSIFMEDIA %s", __func__,
  			   strerror(errno));
  		return -1;
  	}
  
  	return 0;
  }
  
  static int
  bsd_set_mediaopt(void *priv, uint32_t mask, uint32_t mode)
  {
  	int media = bsd_get_if_media(priv);
  
  	if (media < 0)
  		return -1;
  	media &= ~mask;
  	media |= mode;
  	if (bsd_set_if_media(priv, media) < 0)
  		return -1;
  	return 0;
  }
  
  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;
  
  	os_memset(&ifr, 0, sizeof(ifr));
  	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
  
  	if (ioctl(drv->sock, SIOCGIFFLAGS, &ifr) < 0) {
  		wpa_printf(MSG_ERROR, "ioctl[SIOCGIFFLAGS]: %s",
  			   strerror(errno));
  		return -1;
  	}
  
  	if (enable) {
  		if (ifr.ifr_flags & IFF_UP)
  			return 0;
  		ifr.ifr_flags |= IFF_UP;
  	} else {
  		if (!(ifr.ifr_flags & IFF_UP))
  			return 0;
  		ifr.ifr_flags &= ~IFF_UP;
  	}
  
  	if (ioctl(drv->sock, SIOCSIFFLAGS, &ifr) < 0) {
  		wpa_printf(MSG_ERROR, "ioctl[SIOCSIFFLAGS]: %s",
  			   strerror(errno));
  		return -1;
  	}
  
  	return 0;
  }
  
  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;
  #ifdef IEEE80211_KEY_NOREPLAY
  	struct bsd_driver_data *drv = priv;
  #endif /* IEEE80211_KEY_NOREPLAY */
  
  	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) {
  #ifndef HOSTAPD
  		if (addr == NULL || is_broadcast_ether_addr(addr))
  			return bsd_del_key(priv, NULL, key_idx);
  		else
  #endif /* HOSTAPD */
  			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 (is_broadcast_ether_addr(addr)) {
  			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;
  #ifndef HOSTAPD
  #ifdef IEEE80211_KEY_NOREPLAY
  	/*
  	 * Ignore replay failures in IBSS and AHDEMO mode.
  	 */
  	if (drv->opmode == IEEE80211_M_IBSS ||
  	    drv->opmode == IEEE80211_M_AHDEMO)
  		wk.ik_flags |= IEEE80211_KEY_NOREPLAY;
  #endif /* IEEE80211_KEY_NOREPLAY */
  #endif /* HOSTAPD */
  	wk.ik_keylen = key_len;
  	if (seq) {
  #ifdef WORDS_BIGENDIAN
  		/*
  		 * wk.ik_keyrsc is in host byte order (big endian), need to
  		 * swap it to match with the byte order used in WPA.
  		 */
  		int i;
  		u8 *keyrsc = (u8 *) &wk.ik_keyrsc;
  		for (i = 0; i < seq_len; i++)
  			keyrsc[WPA_KEY_RSC_LEN - i - 1] = seq[i];
  #else /* WORDS_BIGENDIAN */
  		os_memcpy(&wk.ik_keyrsc, seq, seq_len);
  #endif /* WORDS_BIGENDIAN */
  	}
  	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)
  {
  #ifndef IEEE80211_IOC_APPIE
  	static const char *ciphernames[] =
  		{ "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
  	int v;
  
  	switch (params->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:
  		wpa_printf(MSG_INFO, "Unknown group key cipher %u",
  			   params->wpa_group);
  		return -1;
  	}
  	wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
  		   __func__, ciphernames[v], v);
  	if (set80211param(priv, IEEE80211_IOC_MCASTCIPHER, v)) {
  		wpa_printf(MSG_INFO,
  			   "Unable to set group key cipher to %u (%s)",
  			   v, ciphernames[v]);
  		return -1;
  	}
  	if (v == IEEE80211_CIPHER_WEP) {
  		/* key length is done only for specific ciphers */
  		v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
  		if (set80211param(priv, IEEE80211_IOC_MCASTKEYLEN, v)) {
  			wpa_printf(MSG_INFO,
  				   "Unable to set group key length to %u", v);
  			return -1;
  		}
  	}
  
  	v = 0;
  	if (params->wpa_pairwise & WPA_CIPHER_CCMP)
  		v |= 1<<IEEE80211_CIPHER_AES_CCM;
  	if (params->wpa_pairwise & WPA_CIPHER_TKIP)
  		v |= 1<<IEEE80211_CIPHER_TKIP;
  	if (params->wpa_pairwise & WPA_CIPHER_NONE)
  		v |= 1<<IEEE80211_CIPHER_NONE;
  	wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
  	if (set80211param(priv, IEEE80211_IOC_UCASTCIPHERS, v)) {
  		wpa_printf(MSG_INFO,
  			   "Unable to set pairwise key ciphers to 0x%x", v);
  		return -1;
  	}
  
  	wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
  		   __func__, params->wpa_key_mgmt);
  	if (set80211param(priv, IEEE80211_IOC_KEYMGTALGS,
  			  params->wpa_key_mgmt)) {
  		wpa_printf(MSG_INFO,
  			   "Unable to set key management algorithms to 0x%x",
  			   params->wpa_key_mgmt);
  		return -1;
  	}
  
  	v = 0;
  	if (params->rsn_preauth)
  		v |= BIT(0);
  	wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
  		   __func__, params->rsn_preauth);
  	if (set80211param(priv, IEEE80211_IOC_RSNCAPS, v)) {
  		wpa_printf(MSG_INFO, "Unable to set RSN capabilities to 0x%x",
  			   v);
  		return -1;
  	}
  #endif /* IEEE80211_IOC_APPIE */
  
  	wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa);
  	if (set80211param(priv, IEEE80211_IOC_WPA, params->wpa)) {
  		wpa_printf(MSG_INFO, "Unable to set WPA to %u", 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 bsd_ctrl_iface(priv, 1);
  }
  
  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) {
  		wpa_printf(MSG_INFO,
  			   "Failed to get WPA/RSN information element");
  		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, 0);
  }
  
  static int
  bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
  	       int encrypt, const u8 *own_addr, u32 flags)
  {
  	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_freq(void *priv, struct hostapd_freq_params *freq)
  {
  	struct bsd_driver_data *drv = priv;
  #ifdef SIOCS80211CHANNEL
  	struct ieee80211chanreq creq;
  #endif /* SIOCS80211CHANNEL */
  	u32 mode;
  	int channel = freq->channel;
  
  	if (channel < 14) {
  		mode =
  #ifdef CONFIG_IEEE80211N
  			freq->ht_enabled ? IFM_IEEE80211_11NG :
  #endif /* CONFIG_IEEE80211N */
  		        IFM_IEEE80211_11G;
  	} else if (channel == 14) {
  		mode = IFM_IEEE80211_11B;
  	} else {
  		mode =
  #ifdef CONFIG_IEEE80211N
  			freq->ht_enabled ? IFM_IEEE80211_11NA :
  #endif /* CONFIG_IEEE80211N */
  			IFM_IEEE80211_11A;
  	}
  	if (bsd_set_mediaopt(drv, IFM_MMASK, mode) < 0) {
  		wpa_printf(MSG_ERROR, "%s: failed to set modulation mode",
  			   __func__);
  		return -1;
  	}
  
  #ifdef SIOCS80211CHANNEL
  	os_memset(&creq, 0, sizeof(creq));
  	os_strlcpy(creq.i_name, drv->ifname, sizeof(creq.i_name));
  	creq.i_channel = (u_int16_t)channel;
  	return ioctl(drv->sock, SIOCS80211CHANNEL, &creq);
  #else /* SIOCS80211CHANNEL */
  	return set80211param(priv, IEEE80211_IOC_CHANNEL, channel);
  #endif /* SIOCS80211CHANNEL */
  }
  
  static int
  bsd_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
  {
  #ifdef IEEE80211_IOC_APPIE
  	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);
  #endif /* IEEE80211_IOC_APPIE */
  	return 0;
  }
  
  static size_t
  rtbuf_len(void)
  {
  	size_t len;
  
  	int mib[6] = {CTL_NET, AF_ROUTE, 0, AF_INET, NET_RT_DUMP, 0};
  
  	if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
  		wpa_printf(MSG_WARNING, "%s failed: %s", __func__,
  			   strerror(errno));
  		len = 2048;
  	}
  
  	return len;
  }
  
  #ifdef HOSTAPD
  
  /*
   * 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) {
  		wpa_printf(MSG_INFO, "Failed to get encryption");
  		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_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;
  	struct if_announcemsghdr *ifan;
  	struct rt_msghdr *rtm;
  	struct ieee80211_michael_event *mic;
  	struct ieee80211_join_event *join;
  	struct ieee80211_leave_event *leave;
  	int n;
  	union wpa_event_data data;
  
  	n = read(sock, drv->event_buf, drv->event_buf_len);
  	if (n < 0) {
  		if (errno != EINTR && errno != EAGAIN)
  			wpa_printf(MSG_ERROR, "%s read() failed: %s",
  				   __func__, strerror(errno));
  		return;
  	}
  
  	rtm = (struct rt_msghdr *) drv->event_buf;
  	if (rtm->rtm_version != RTM_VERSION) {
  		wpa_printf(MSG_DEBUG, "Invalid routing message version=%d",
  			   rtm->rtm_version);
  		return;
  	}
  	ifan = (struct if_announcemsghdr *) rtm;
  	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;
  		}
  		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 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) {
  		wpa_printf(MSG_ERROR, "Could not allocate memory for bsd driver data");
  		return NULL;
  	}
  
  	drv->event_buf_len = rtbuf_len();
  
  	drv->event_buf = os_malloc(drv->event_buf_len);
  	if (drv->event_buf == NULL) {
  		wpa_printf(MSG_ERROR, "%s: os_malloc() failed", __func__);
  		goto bad;
  	}
  
  	drv->hapd = hapd;
  	drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
  	if (drv->sock < 0) {
  		wpa_printf(MSG_ERROR, "socket[PF_INET,SOCK_DGRAM]: %s",
  			   strerror(errno));
  		goto bad;
  	}
  	os_strlcpy(drv->ifname, params->ifname, sizeof(drv->ifname));
  
  	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) {
  		wpa_printf(MSG_ERROR, "socket(PF_ROUTE,SOCK_RAW): %s",
  			   strerror(errno));
  		goto bad;
  	}
  	eloop_register_read_sock(drv->route, bsd_wireless_event_receive, drv,
  				 NULL);
  
  	if (bsd_set_mediaopt(drv, IFM_OMASK, IFM_IEEE80211_HOSTAP) < 0) {
  		wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
  			   __func__);
  		goto bad;
  	}
  
  	return drv;
  bad:
  	if (drv->sock_xmit != NULL)
  		l2_packet_deinit(drv->sock_xmit);
  	if (drv->sock >= 0)
  		close(drv->sock);
  	os_free(drv->event_buf);
  	if (drv != NULL)
  		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->event_buf);
  	os_free(drv);
  }
  
  
  static int
  bsd_commit(void *priv)
  {
  	return bsd_ctrl_iface(priv, 1);
  }
  
  
  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);
  }
  #else /* HOSTAPD */
  
  static int
  get80211param(struct bsd_driver_data *drv, int op)
  {
  	struct ieee80211req ireq;
  
  	if (bsd_get80211(drv, &ireq, op, NULL, 0) < 0)
  		return -1;
  	return ireq.i_val;
  }
  
  static int
  wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
  {
  	struct bsd_driver_data *drv = priv;
  #ifdef SIOCG80211BSSID
  	struct ieee80211_bssid bs;
  
  	os_strlcpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
  	if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
  		return -1;
  	os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
  	return 0;
  #else
  	return get80211var(drv, IEEE80211_IOC_BSSID,
  		bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
  #endif
  }
  
  static int
  wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
  {
  	struct bsd_driver_data *drv = priv;
  	return bsd_get_ssid(drv, ssid, 0);
  }
  
  static int
  wpa_driver_bsd_set_wpa_ie(struct bsd_driver_data *drv, const u8 *wpa_ie,
  			  size_t wpa_ie_len)
  {
  #ifdef IEEE80211_IOC_APPIE
  	return bsd_set_opt_ie(drv, wpa_ie, wpa_ie_len);
  #else /* IEEE80211_IOC_APPIE */
  	return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
  #endif /* IEEE80211_IOC_APPIE */
  }
  
  static int
  wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
  {
  	int ret = 0;
  
  	wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
  		__FUNCTION__, wpa, privacy);
  
  	if (!wpa && wpa_driver_bsd_set_wpa_ie(priv, NULL, 0) < 0)
  		ret = -1;
  	if (set80211param(priv, IEEE80211_IOC_PRIVACY, privacy) < 0)
  		ret = -1;
  	if (set80211param(priv, IEEE80211_IOC_WPA, wpa) < 0)
  		ret = -1;
  
  	return ret;
  }
  
  static int
  wpa_driver_bsd_set_wpa(void *priv, int enabled)
  {
  	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
  
  	return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
  }
  
  static int
  wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
  {
  	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
  	return set80211param(priv, IEEE80211_IOC_COUNTERMEASURES, enabled);
  }
  
  
  static int
  wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
  {
  	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
  	return set80211param(priv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
  }
  
  static int
  wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
  {
  	return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
  				   addr);
  }
  
  static int
  wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
  {
  	int authmode;
  
  	if ((auth_alg & WPA_AUTH_ALG_OPEN) &&
  	    (auth_alg & WPA_AUTH_ALG_SHARED))
  		authmode = IEEE80211_AUTH_AUTO;
  	else if (auth_alg & WPA_AUTH_ALG_SHARED)
  		authmode = IEEE80211_AUTH_SHARED;
  	else
  		authmode = IEEE80211_AUTH_OPEN;
  
  	return set80211param(priv, IEEE80211_IOC_AUTHMODE, authmode);
  }
  
  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->ctx, src_addr, buf, len);
  }
  
  static int
  wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
  {
  	struct bsd_driver_data *drv = priv;
  	struct ieee80211req_mlme mlme;
  	u32 mode;
  	int privacy;
  	int ret = 0;
  
  	wpa_printf(MSG_DEBUG,
  		"%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
  		, __func__
  		   , (unsigned int) params->ssid_len, params->ssid
  		, (unsigned int) params->wpa_ie_len
  		, params->pairwise_suite
  		, params->group_suite
  		, params->key_mgmt_suite
  	);
  
  	switch (params->mode) {
  	case IEEE80211_MODE_INFRA:
  		mode = 0 /* STA */;
  		break;
  	case IEEE80211_MODE_IBSS:
  		mode = IFM_IEEE80211_IBSS;
  		break;
  	case IEEE80211_MODE_AP:
  		mode = IFM_IEEE80211_HOSTAP;
  		break;
  	default:
  		wpa_printf(MSG_ERROR, "%s: unknown operation mode", __func__);
  		return -1;
  	}
  	if (bsd_set_mediaopt(drv, IFM_OMASK, mode) < 0) {
  		wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
  			   __func__);
  		return -1;
  	}
  
  	if (params->mode == IEEE80211_MODE_AP) {
  		drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
  						handle_read, drv, 0);
  		if (drv->sock_xmit == NULL)
  			return -1;
  		drv->is_ap = 1;
  		return 0;
  	}
  
  	if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
  	    < 0)
  		ret = -1;
  	if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
  		ret = -1;
  	/* XXX error handling is wrong but unclear what to do... */
  	if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
  		return -1;
  
  	privacy = !(params->pairwise_suite == WPA_CIPHER_NONE &&
  	    params->group_suite == WPA_CIPHER_NONE &&
  	    params->key_mgmt_suite == WPA_KEY_MGMT_NONE &&
  	    params->wpa_ie_len == 0);
  	wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
  
  	if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
  		return -1;
  
  	if (params->wpa_ie_len &&
  	    set80211param(drv, IEEE80211_IOC_WPA,
  			  params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
  		return -1;
  
  	os_memset(&mlme, 0, sizeof(mlme));
  	mlme.im_op = IEEE80211_MLME_ASSOC;
  	if (params->ssid != NULL)
  		os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
  	mlme.im_ssid_len = params->ssid_len;
  	if (params->bssid != NULL)
  		os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
  	if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
  		return -1;
  	return ret;
  }
  
  static int
  wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
  {
  	struct bsd_driver_data *drv = priv;
  #ifdef IEEE80211_IOC_SCAN_MAX_SSID
  	struct ieee80211_scan_req sr;
  	int i;
  #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
  
  	if (bsd_set_mediaopt(drv, IFM_OMASK, 0 /* STA */) < 0) {
  		wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
  			   __func__);
  		return -1;
  	}
  
  	if (set80211param(drv, IEEE80211_IOC_ROAMING,
  			  IEEE80211_ROAMING_MANUAL) < 0) {
  		wpa_printf(MSG_ERROR, "%s: failed to set "
  			   "wpa_supplicant-based roaming: %s", __func__,
  			   strerror(errno));
  		return -1;
  	}
  
  	if (wpa_driver_bsd_set_wpa(drv, 1) < 0) {
  		wpa_printf(MSG_ERROR, "%s: failed to set wpa: %s", __func__,
  			   strerror(errno));
  		return -1;
  	}
  
  	/* NB: interface must be marked UP to do a scan */
  	if (bsd_ctrl_iface(drv, 1) < 0)
  		return -1;
  
  #ifdef IEEE80211_IOC_SCAN_MAX_SSID
  	os_memset(&sr, 0, sizeof(sr));
  	sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE | IEEE80211_IOC_SCAN_ONCE |
  		IEEE80211_IOC_SCAN_NOJOIN;
  	sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER;
  	if (params->num_ssids > 0) {
  		sr.sr_nssid = params->num_ssids;
  #if 0
  		/* Boundary check is done by upper layer */
  		if (sr.sr_nssid > IEEE80211_IOC_SCAN_MAX_SSID)
  			sr.sr_nssid = IEEE80211_IOC_SCAN_MAX_SSID;
  #endif
  
  		/* NB: check scan cache first */
  		sr.sr_flags |= IEEE80211_IOC_SCAN_CHECK;
  	}
  	for (i = 0; i < sr.sr_nssid; i++) {
  		sr.sr_ssid[i].len = params->ssids[i].ssid_len;
  		os_memcpy(sr.sr_ssid[i].ssid, params->ssids[i].ssid,
  			  sr.sr_ssid[i].len);
  	}
  
  	/* NB: net80211 delivers a scan complete event so no need to poll */
  	return set80211var(drv, IEEE80211_IOC_SCAN_REQ, &sr, sizeof(sr));
  #else /* IEEE80211_IOC_SCAN_MAX_SSID */
  	/* set desired ssid before scan */
  	if (bsd_set_ssid(drv, params->ssids[0].ssid,
  			 params->ssids[0].ssid_len) < 0)
  		return -1;
  
  	/* NB: net80211 delivers a scan complete event so no need to poll */
  	return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
  #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
  }
  
  static void
  wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
  {
  	struct bsd_driver_data *drv = sock_ctx;
  	struct if_announcemsghdr *ifan;
  	struct if_msghdr *ifm;
  	struct rt_msghdr *rtm;
  	union wpa_event_data event;
  	struct ieee80211_michael_event *mic;
  	struct ieee80211_leave_event *leave;
  	struct ieee80211_join_event *join;
  	int n;
  
  	n = read(sock, drv->event_buf, drv->event_buf_len);
  	if (n < 0) {
  		if (errno != EINTR && errno != EAGAIN)
  			wpa_printf(MSG_ERROR, "%s read() failed: %s",
  				   __func__, strerror(errno));
  		return;
  	}
  
  	rtm = (struct rt_msghdr *) drv->event_buf;
  	if (rtm->rtm_version != RTM_VERSION) {
  		wpa_printf(MSG_DEBUG, "Invalid routing message version=%d",
  			   rtm->rtm_version);
  		return;
  	}
  	os_memset(&event, 0, sizeof(event));
  	switch (rtm->rtm_type) {
  	case RTM_IFANNOUNCE:
  		ifan = (struct if_announcemsghdr *) rtm;
  		if (ifan->ifan_index != drv->ifindex)
  			break;
  		os_strlcpy(event.interface_status.ifname, drv->ifname,
  			   sizeof(event.interface_status.ifname));
  		switch (ifan->ifan_what) {
  		case IFAN_DEPARTURE:
  			event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
  		default:
  			return;
  		}
  		wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
  			   event.interface_status.ifname,
  			   ifan->ifan_what == IFAN_DEPARTURE ?
  				"removed" : "added");
  		wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
  		break;
  	case RTM_IEEE80211:
  		ifan = (struct if_announcemsghdr *) rtm;
  		if (ifan->ifan_index != drv->ifindex)
  			break;
  		switch (ifan->ifan_what) {
  		case RTM_IEEE80211_ASSOC:
  		case RTM_IEEE80211_REASSOC:
  			if (drv->is_ap)
  				break;
  			wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
  			break;
  		case RTM_IEEE80211_DISASSOC:
  			if (drv->is_ap)
  				break;
  			wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
  			break;
  		case RTM_IEEE80211_SCAN:
  			if (drv->is_ap)
  				break;
  			wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
  			break;
  		case RTM_IEEE80211_LEAVE:
  			leave = (struct ieee80211_leave_event *) &ifan[1];
  			drv_event_disassoc(ctx, 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, ctx, 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(&event, 0, sizeof(event));
  			event.michael_mic_failure.unicast =
  				!IEEE80211_IS_MULTICAST(mic->iev_dst);
  			wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
  				&event);
  			break;
  		}
  		break;
  	case RTM_IFINFO:
  		ifm = (struct if_msghdr *) rtm;
  		if (ifm->ifm_index != drv->ifindex)
  			break;
  		if ((rtm->rtm_flags & RTF_UP) == 0) {
  			os_strlcpy(event.interface_status.ifname, drv->ifname,
  				   sizeof(event.interface_status.ifname));
  			event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
  			wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
  				   event.interface_status.ifname);
  			wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
  		}
  		break;
  	}
  }
  
  static void
  wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
  			      struct ieee80211req_scan_result *sr)
  {
  	struct wpa_scan_res *result, **tmp;
  	size_t extra_len;
  	u8 *pos;
  
  	extra_len = 2 + sr->isr_ssid_len;
  	extra_len += 2 + sr->isr_nrates;
  	extra_len += 3; /* ERP IE */
  	extra_len += sr->isr_ie_len;
  
  	result = os_zalloc(sizeof(*result) + extra_len);
  	if (result == NULL)
  		return;
  	os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
  	result->freq = sr->isr_freq;
  	result->beacon_int = sr->isr_intval;
  	result->caps = sr->isr_capinfo;
  	result->qual = sr->isr_rssi;
  	result->noise = sr->isr_noise;
  	/*
  	 * the rssi value reported by the kernel is in 0.5dB steps relative to
  	 * the reported noise floor. see ieee80211_node.h for details.
  	 */
  	result->level = sr->isr_rssi / 2 + sr->isr_noise;
  
  	pos = (u8 *)(result + 1);
  
  	*pos++ = WLAN_EID_SSID;
  	*pos++ = sr->isr_ssid_len;
  	os_memcpy(pos, sr + 1, sr->isr_ssid_len);
  	pos += sr->isr_ssid_len;
  
  	/*
  	 * Deal all rates as supported rate.
  	 * Because net80211 doesn't report extended supported rate or not.
  	 */
  	*pos++ = WLAN_EID_SUPP_RATES;
  	*pos++ = sr->isr_nrates;
  	os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
  	pos += sr->isr_nrates;
  
  	*pos++ = WLAN_EID_ERP_INFO;
  	*pos++ = 1;
  	*pos++ = sr->isr_erp;
  
  #if defined(__DragonFly__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
  	os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len + sr->isr_meshid_len,
  		  sr->isr_ie_len);
  #else
  	os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
  #endif
  	pos += sr->isr_ie_len;
  
  	result->ie_len = pos - (u8 *)(result + 1);
  
  	tmp = os_realloc_array(res->res, res->num + 1,
  			       sizeof(struct wpa_scan_res *));
  	if (tmp == NULL) {
  		os_free(result);
  		return;
  	}
  	tmp[res->num++] = result;
  	res->res = tmp;
  }
  
  struct wpa_scan_results *
  wpa_driver_bsd_get_scan_results2(void *priv)
  {
  	struct ieee80211req_scan_result *sr;
  	struct wpa_scan_results *res;
  	int len, rest;
  	uint8_t buf[24*1024], *pos;
  
  	len = get80211var(priv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
  	if (len < 0)
  		return NULL;
  
  	res = os_zalloc(sizeof(*res));
  	if (res == NULL)
  		return NULL;
  
  	pos = buf;
  	rest = len;
  	while (rest >= sizeof(struct ieee80211req_scan_result)) {
  		sr = (struct ieee80211req_scan_result *)pos;
  		wpa_driver_bsd_add_scan_entry(res, sr);
  		pos += sr->isr_len;
  		rest -= sr->isr_len;
  	}
  
  	wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
  		   len, (unsigned long)res->num);
  
  	return res;
  }
  
  static int wpa_driver_bsd_capa(struct bsd_driver_data *drv)
  {
  #ifdef IEEE80211_IOC_DEVCAPS
  /* kernel definitions copied from net80211/ieee80211_var.h */
  #define IEEE80211_CIPHER_WEP            0
  #define IEEE80211_CIPHER_TKIP           1
  #define IEEE80211_CIPHER_AES_CCM        3
  #define IEEE80211_CRYPTO_WEP            (1<<IEEE80211_CIPHER_WEP)
  #define IEEE80211_CRYPTO_TKIP           (1<<IEEE80211_CIPHER_TKIP)
  #define IEEE80211_CRYPTO_AES_CCM        (1<<IEEE80211_CIPHER_AES_CCM)
  #define IEEE80211_C_HOSTAP      0x00000400      /* CAPABILITY: HOSTAP avail */
  #define IEEE80211_C_WPA1        0x00800000      /* CAPABILITY: WPA1 avail */
  #define IEEE80211_C_WPA2        0x01000000      /* CAPABILITY: WPA2 avail */
  	struct ieee80211_devcaps_req devcaps;
  
  	if (get80211var(drv, IEEE80211_IOC_DEVCAPS, &devcaps,
  			sizeof(devcaps)) < 0) {
  		wpa_printf(MSG_ERROR, "failed to IEEE80211_IOC_DEVCAPS: %s",
  			   strerror(errno));
  		return -1;
  	}
  
  	wpa_printf(MSG_DEBUG, "%s: drivercaps=0x%08x,cryptocaps=0x%08x",
  		   __func__, devcaps.dc_drivercaps, devcaps.dc_cryptocaps);
  
  	if (devcaps.dc_drivercaps & IEEE80211_C_WPA1)
  		drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
  			WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
  	if (devcaps.dc_drivercaps & IEEE80211_C_WPA2)
  		drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
  			WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
  
  	if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_WEP)
  		drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
  			WPA_DRIVER_CAPA_ENC_WEP104;
  	if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_TKIP)
  		drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
  	if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_AES_CCM)
  		drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
  
  	if (devcaps.dc_drivercaps & IEEE80211_C_HOSTAP)
  		drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
  #undef IEEE80211_CIPHER_WEP
  #undef IEEE80211_CIPHER_TKIP
  #undef IEEE80211_CIPHER_AES_CCM
  #undef IEEE80211_CRYPTO_WEP
  #undef IEEE80211_CRYPTO_TKIP
  #undef IEEE80211_CRYPTO_AES_CCM
  #undef IEEE80211_C_HOSTAP
  #undef IEEE80211_C_WPA1
  #undef IEEE80211_C_WPA2
  #else /* IEEE80211_IOC_DEVCAPS */
  	/* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
  	drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
  		WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
  		WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
  		WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
  	drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
  		WPA_DRIVER_CAPA_ENC_WEP104 |
  		WPA_DRIVER_CAPA_ENC_TKIP |
  		WPA_DRIVER_CAPA_ENC_CCMP;
  	drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
  #endif /* IEEE80211_IOC_DEVCAPS */
  #ifdef IEEE80211_IOC_SCAN_MAX_SSID
  	drv->capa.max_scan_ssids = IEEE80211_IOC_SCAN_MAX_SSID;
  #else /* IEEE80211_IOC_SCAN_MAX_SSID */
  	drv->capa.max_scan_ssids = 1;
  #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
  	drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
  		WPA_DRIVER_AUTH_SHARED |
  		WPA_DRIVER_AUTH_LEAP;
  	return 0;
  }
  
  static enum ieee80211_opmode
  get80211opmode(struct bsd_driver_data *drv)
  {
  	struct ifmediareq ifmr;
  
  	(void) memset(&ifmr, 0, sizeof(ifmr));
  	(void) os_strlcpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name));
  
  	if (ioctl(drv->sock, SIOCGIFMEDIA, (caddr_t)&ifmr) >= 0) {
  		if (ifmr.ifm_current & IFM_IEEE80211_ADHOC) {
  			if (ifmr.ifm_current & IFM_FLAG0)
  				return IEEE80211_M_AHDEMO;
  			else
  				return IEEE80211_M_IBSS;
  		}
  		if (ifmr.ifm_current & IFM_IEEE80211_HOSTAP)
  			return IEEE80211_M_HOSTAP;
  		if (ifmr.ifm_current & IFM_IEEE80211_MONITOR)
  			return IEEE80211_M_MONITOR;
  #ifdef IEEE80211_M_MBSS
  		if (ifmr.ifm_current & IFM_IEEE80211_MBSS)
  			return IEEE80211_M_MBSS;
  #endif /* IEEE80211_M_MBSS */
  	}
  	return IEEE80211_M_STA;
  }
  
  static void *
  wpa_driver_bsd_init(void *ctx, const char *ifname)
  {
  #define	GETPARAM(drv, param, v) \
  	(((v) = get80211param(drv, param)) != -1)
  	struct bsd_driver_data *drv;
  
  	drv = os_zalloc(sizeof(*drv));
  	if (drv == NULL)
  		return NULL;
  
  	drv->event_buf_len = rtbuf_len();
  
  	drv->event_buf = os_malloc(drv->event_buf_len);
  	if (drv->event_buf == NULL) {
  		wpa_printf(MSG_ERROR, "%s: os_malloc() failed", __func__);
  		goto fail1;
  	}
  
  	/*
  	 * 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.
  	 */
  	drv->ifindex = if_nametoindex(ifname);
  	if (drv->ifindex == 0) {
  		wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
  			   __func__, ifname);
  		goto fail1;
  	}
  	drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
  	if (drv->sock < 0)
  		goto fail1;
  
  	os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
  	/* Down interface during setup. */
  	if (bsd_ctrl_iface(drv, 0) < 0)
  		goto fail;
  
  	drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
  	if (drv->route < 0)
  		goto fail;
  	eloop_register_read_sock(drv->route,
  		wpa_driver_bsd_event_receive, ctx, drv);
  
  	drv->ctx = ctx;
  
  	if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
  		wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
  			__func__, strerror(errno));
  		goto fail;
  	}
  	if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
  		wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
  			__func__, strerror(errno));
  		goto fail;
  	}
  	if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
  		wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
  			__func__, strerror(errno));
  		goto fail;
  	}
  
  	if (wpa_driver_bsd_capa(drv))
  		goto fail;
  
  	drv->opmode = get80211opmode(drv);
  
  	return drv;
  fail:
  	close(drv->sock);
  fail1:
  	os_free(drv->event_buf);
  	os_free(drv);
  	return NULL;
  #undef GETPARAM
  }
  
  static void
  wpa_driver_bsd_deinit(void *priv)
  {
  	struct bsd_driver_data *drv = priv;
  
  	wpa_driver_bsd_set_wpa(drv, 0);
  	eloop_unregister_read_sock(drv->route);
  
  	/* NB: mark interface down */
  	bsd_ctrl_iface(drv, 0);
  
  	wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
  	if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
  		wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
  			__func__);
  
  	if (drv->sock_xmit != NULL)
  		l2_packet_deinit(drv->sock_xmit);
  	(void) close(drv->route);		/* ioctl socket */
  	(void) close(drv->sock);		/* event socket */
  	os_free(drv->event_buf);
  	os_free(drv);
  }
  
  static int
  wpa_driver_bsd_get_capa(void *priv, struct wpa_driver_capa *capa)
  {
  	struct bsd_driver_data *drv = priv;
  
  	os_memcpy(capa, &drv->capa, sizeof(*capa));
  	return 0;
  }
  #endif /* HOSTAPD */
  
  
  const struct wpa_driver_ops wpa_driver_bsd_ops = {
  	.name			= "bsd",
  	.desc			= "BSD 802.11 support",
  #ifdef HOSTAPD
  	.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_disassoc		= bsd_sta_disassoc,
  	.sta_deauth		= bsd_sta_deauth,
  	.sta_set_flags		= bsd_set_sta_authorized,
  	.commit			= bsd_commit,
  #else /* HOSTAPD */
  	.init			= wpa_driver_bsd_init,
  	.deinit			= wpa_driver_bsd_deinit,
  	.get_bssid		= wpa_driver_bsd_get_bssid,
  	.get_ssid		= wpa_driver_bsd_get_ssid,
  	.set_countermeasures	= wpa_driver_bsd_set_countermeasures,
  	.scan2			= wpa_driver_bsd_scan,
  	.get_scan_results2	= wpa_driver_bsd_get_scan_results2,
  	.deauthenticate		= wpa_driver_bsd_deauthenticate,
  	.associate		= wpa_driver_bsd_associate,
  	.get_capa		= wpa_driver_bsd_get_capa,
  #endif /* HOSTAPD */
  	.set_freq		= bsd_set_freq,
  	.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,
  	.set_generic_elem	= bsd_set_opt_ie,
  };
  