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/*	$FreeBSD: release/9.1.0/sys/netinet/ip_encap.h 139823 2005-01-07 01:45:51Z imp $	*/
/*	$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_*/

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