driver_bsd.c

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/*
 * WPA Supplicant - 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.
 */

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

#include "common.h"
#include "driver.h"
#include "eloop.h"
#include "common/ieee802_11_defs.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 */
};

/* 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) {
                perror("ioctl[SIOCGIFFLAGS]");
                return -1;
        }

        if (enable)
                ifr.ifr_flags |= IFF_UP;
        else
                ifr.ifr_flags &= ~IFF_UP;

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

        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 ||
                    os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
                              IEEE80211_ADDR_LEN) == 0)
                        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 (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)
{
#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:
                printf("Unknown group key cipher %u\n",
                        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)) {
                printf("Unable to set group key cipher to %u (%s)\n",
                        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)) {
                        printf("Unable to set group key length to %u\n", 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)) {
                printf("Unable to set pairwise key ciphers to 0x%x\n", 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)) {
                printf("Unable to set key management algorithms to 0x%x\n",
                        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)) {
                printf("Unable to set RSN capabilities to 0x%x\n", 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)) {
                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 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);
}

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_freq(void *priv, u16 channel)
{
        struct bsd_driver_data *drv = priv;
#ifdef SIOCS80211CHANNEL
        struct ieee80211chanreq creq;
#endif /* SIOCS80211CHANNEL */
        u32 mode;

        if (channel < 14)
                mode = IFM_IEEE80211_11G;
        else if (channel == 14)
                mode = IFM_IEEE80211_11B;
        else
                mode = 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 = 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;
}


#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) {
                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_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;
        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;
        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 int
hostapd_bsd_set_freq(void *priv, struct hostapd_freq_params *freq)
{
        return bsd_set_freq(priv, freq->channel);
}

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));

        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);

        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);
        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);
}

#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_disassociate(void *priv, const u8 *addr, int reason_code)
{
        return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, 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;
        u16 channel;
        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) {
                if (params->freq >= 2412 && params->freq <= 2472)
                        channel = (params->freq - 2407) / 5;
                else if (params->freq == 2484)
                        channel = 14;
                else if ((params->freq >= 5180 && params->freq <= 5240) ||
                         (params->freq >= 5745 && params->freq <= 5825))
                        channel = (params->freq - 5000) / 5;
                else
                        channel = 0;
                if (bsd_set_freq(drv, channel) < 0)
                        return -1;

                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 == CIPHER_NONE &&
            params->group_suite == CIPHER_NONE &&
            params->key_mgmt_suite == 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;
        char buf[2048];
        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, 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;
        }
        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;

        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;

        os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
        pos += sr->isr_ie_len;

        result->ie_len = pos - (u8 *)(result + 1);

        tmp = os_realloc(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 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;
        /*
         * 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;
        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;
        os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));

        /* Down interface during setup. */
        if (bsd_ctrl_iface(drv, 0) < 0)
                goto fail;

        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;

        return drv;
fail:
        close(drv->sock);
fail1:
        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);
}

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,
        .set_freq               = hostapd_bsd_set_freq,
#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,
        .disassociate           = wpa_driver_bsd_disassociate,
        .associate              = wpa_driver_bsd_associate,
        .get_capa               = wpa_driver_bsd_get_capa,
#endif /* HOSTAPD */
        .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,
};