1/* $KAME: ip_encap.h,v 1.7 2000/03/25 07:23:37 sumikawa Exp $ */
2
3/*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
7 * Copyright (c) 2018 Andrey V. Elsukov <ae@FreeBSD.org>
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
40int encap4_input(struct mbuf **, int *, int);
41int encap6_input(struct mbuf **, int *, int);
42
43typedef int (*encap_lookup_t)(const struct mbuf *, int, int, void **);
44typedef int (*encap_check_t)(const struct mbuf *, int, int, void *);
45typedef int (*encap_input_t)(struct mbuf *, int, int, void *);
46typedef void (*encap_srcaddr_t)(void *, const struct sockaddr *, int);
47
48struct encap_config {
49 int proto; /* protocol */
50 int min_length; /* minimum packet length */
51 int max_hdrsize; /* maximum header size */
52 int exact_match; /* a packet is exactly matched */
53#define ENCAP_DRV_LOOKUP 0x7fffffff
54
55 encap_lookup_t lookup;
56 encap_check_t check;
57 encap_input_t input;
58
59 void *pad[3];
60};
61
62struct encaptab;
63struct srcaddrtab;
64
65const struct encaptab *ip_encap_attach(const struct encap_config *,
66 void *arg, int mflags);
67const struct encaptab *ip6_encap_attach(const struct encap_config *,
68 void *arg, int mflags);
69
70const struct srcaddrtab *ip_encap_register_srcaddr(encap_srcaddr_t,
71 void *arg, int mflags);
72const struct srcaddrtab *ip6_encap_register_srcaddr(encap_srcaddr_t,
73 void *arg, int mflags);
74
75int ip_encap_unregister_srcaddr(const struct srcaddrtab *);
76int ip6_encap_unregister_srcaddr(const struct srcaddrtab *);
77int ip_encap_detach(const struct encaptab *);
78int ip6_encap_detach(const struct encaptab *);
79#endif
80
81#endif /*_NETINET_IP_ENCAP_H_*/