/*      $FreeBSD: src/sys/netinet/ip_encap.h,v 1.1.2.2 2002/11/20 23:20:54 luigi Exp $  */
/*      $DragonFly: src/sys/netinet/ip_encap.h,v 1.4 2006/05/20 02:42:12 dillon Exp $   */
/*      $KAME: ip_encap.h,v 1.7 2000/03/25 07:23:37 sumikawa Exp $      */

/*
 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
 * 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.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT OR CONTRIBUTORS 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.
 */

#ifndef _NETINET_IP_ENCAP_H_
#define _NETINET_IP_ENCAP_H_

#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)

#ifndef _SYS_QUEUE_H_
#include <sys/queue.h>
#endif
#ifndef _SYS_SOCKET_H_
#include <sys/socket.h>
#endif

struct mbuf;

struct encaptab {
        LIST_ENTRY(encaptab) chain;
        int af;
        int proto;                      /* -1: don't care, I'll check myself */
        struct sockaddr_storage src;    /* my addr */
        struct sockaddr_storage srcmask;
        struct sockaddr_storage dst;    /* remote addr */
        struct sockaddr_storage dstmask;
        int (*func)(const struct mbuf *, int, int, void *);
        const struct protosw *psw;      /* only pr_input will be used */
        void *arg;                      /* passed via m->m_pkthdr.aux */
};

#endif

#ifdef _KERNEL

void    encap_init(void);
int     encap4_input(struct mbuf **, int *, int);
int     encap6_input(struct mbuf **, int *, int);
const struct encaptab *encap_attach(int, int, const struct sockaddr *,
        const struct sockaddr *, const struct sockaddr *,
        const struct sockaddr *, const struct protosw *, void *);
const struct encaptab *encap_attach_func(int, int,
        int (*)(const struct mbuf *, int, int, void *),
        const struct protosw *, void *);
int     encap_detach(const struct encaptab *);
void    *encap_getarg(struct mbuf *);

#endif

#endif /*_NETINET_IP_ENCAP_H_*/