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/*      $FreeBSD: src/sys/netinet/ip_encap.h,v 1.3 2002/03/19 21:25:46 alfred 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_

#ifdef _KERNEL

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 */

};

void    encap_init(void);

void    encap4_input(struct mbuf *, 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_*/