/*-
 * Copyright (c) 2016 Yandex LLC
 * Copyright (c) 2016 Andrey V. Elsukov <ae@FreeBSD.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/rwlock.h>
#include <sys/socket.h>

#include <net/if.h>
#include <net/vnet.h>

#include <netinet/in.h>
#include <netinet/ip_var.h>
#include <netinet/ip_fw.h>

#include <netpfil/ipfw/ip_fw_private.h>
#include <netpfil/ipfw/nptv6/nptv6.h>

static int
vnet_ipfw_nptv6_init(const void *arg __unused)
{

        return (nptv6_init(&V_layer3_chain, IS_DEFAULT_VNET(curvnet)));
}

static int
vnet_ipfw_nptv6_uninit(const void *arg __unused)
{

        nptv6_uninit(&V_layer3_chain, IS_DEFAULT_VNET(curvnet));
        return (0);
}

static int
ipfw_nptv6_modevent(module_t mod, int type, void *unused)
{

        switch (type) {
        case MOD_LOAD:
        case MOD_UNLOAD:
                break;
        default:
                return (EOPNOTSUPP);
        }
        return (0);
}

static moduledata_t ipfw_nptv6_mod = {
        "ipfw_nptv6",
        ipfw_nptv6_modevent,
        0
};

/* Define startup order. */
#define IPFW_NPTV6_SI_SUB_FIREWALL      SI_SUB_PROTO_IFATTACHDOMAIN
#define IPFW_NPTV6_MODEVENT_ORDER       (SI_ORDER_ANY - 128) /* after ipfw */
#define IPFW_NPTV6_MODULE_ORDER         (IPFW_NPTV6_MODEVENT_ORDER + 1)
#define IPFW_NPTV6_VNET_ORDER           (IPFW_NPTV6_MODEVENT_ORDER + 2)

DECLARE_MODULE(ipfw_nptv6, ipfw_nptv6_mod, IPFW_NPTV6_SI_SUB_FIREWALL,
    IPFW_NPTV6_MODULE_ORDER);
MODULE_DEPEND(ipfw_nptv6, ipfw, 3, 3, 3);
MODULE_VERSION(ipfw_nptv6, 1);

VNET_SYSINIT(vnet_ipfw_nptv6_init, IPFW_NPTV6_SI_SUB_FIREWALL,
    IPFW_NPTV6_VNET_ORDER, vnet_ipfw_nptv6_init, NULL);
VNET_SYSUNINIT(vnet_ipfw_nptv6_uninit, IPFW_NPTV6_SI_SUB_FIREWALL,
    IPFW_NPTV6_VNET_ORDER, vnet_ipfw_nptv6_uninit, NULL);