ip_encap.h revision 330897 
1/*	$FreeBSD: stable/11/sys/netinet/ip_encap.h 330897 2018-03-14 03:19:51Z eadler $	*/
2/*	$KAME: ip_encap.h,v 1.7 2000/03/25 07:23:37 sumikawa Exp $	*/
3
4/*-
5 * SPDX-License-Identifier: BSD-3-Clause
6 *
7 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the project nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#ifndef _NETINET_IP_ENCAP_H_
36#define _NETINET_IP_ENCAP_H_
37
38#ifdef _KERNEL
39
40struct encaptab {
41	LIST_ENTRY(encaptab) chain;
42	int af;
43	int proto;			/* -1: don't care, I'll check myself */
44	struct sockaddr_storage src;	/* my addr */
45	struct sockaddr_storage srcmask;
46	struct sockaddr_storage dst;	/* remote addr */
47	struct sockaddr_storage dstmask;
48	int (*func)(const struct mbuf *, int, int, void *);
49	const struct protosw *psw;	/* only pr_input will be used */
50	void *arg;			/* passed via m->m_pkthdr.aux */
51};
52
53void	encap_init(void);
54int	encap4_input(struct mbuf **, int *, int);
55int	encap6_input(struct mbuf **, int *, int);
56const struct encaptab *encap_attach(int, int, const struct sockaddr *,
57	const struct sockaddr *, const struct sockaddr *,
58	const struct sockaddr *, const struct protosw *, void *);
59const struct encaptab *encap_attach_func(int, int,
60	int (*)(const struct mbuf *, int, int, void *),
61	const struct protosw *, void *);
62int	encap_detach(const struct encaptab *);
63void	*encap_getarg(struct mbuf *);
64#endif
65
66#endif /*_NETINET_IP_ENCAP_H_*/
67