1/*	$FreeBSD: stable/11/sys/netinet/ip_encap.h 335031 2018-06-13 07:14:34Z ae $	*/
2/*	$KAME: ip_encap.h,v 1.7 2000/03/25 07:23:37 sumikawa Exp $	*/
3
4/*-
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#ifndef _NETINET_IP_ENCAP_H_
34#define _NETINET_IP_ENCAP_H_
35
36#ifdef _KERNEL
37
38struct encaptab {
39	LIST_ENTRY(encaptab) chain;
40	int af;
41	int proto;			/* -1: don't care, I'll check myself */
42	struct sockaddr_storage src;	/* my addr */
43	struct sockaddr_storage srcmask;
44	struct sockaddr_storage dst;	/* remote addr */
45	struct sockaddr_storage dstmask;
46	int (*func)(const struct mbuf *, int, int, void *);
47	const struct protosw *psw;	/* only pr_input will be used */
48	void *arg;			/* passed via m->m_pkthdr.aux */
49};
50
51int	encap4_input(struct mbuf **, int *, int);
52int	encap6_input(struct mbuf **, int *, int);
53const struct encaptab *encap_attach(int, int, const struct sockaddr *,
54	const struct sockaddr *, const struct sockaddr *,
55	const struct sockaddr *, const struct protosw *, void *);
56const struct encaptab *encap_attach_func(int, int,
57	int (*)(const struct mbuf *, int, int, void *),
58	const struct protosw *, void *);
59int	encap_detach(const struct encaptab *);
60void	*encap_getarg(struct mbuf *);
61#endif
62
63#endif /*_NETINET_IP_ENCAP_H_*/
64