1/* $OpenBSD: ip_gre.h,v 1.20 2025/01/01 13:44:22 bluhm Exp $ */
2/* $NetBSD: ip_gre.h,v 1.3 1998/10/07 23:33:02 thorpej Exp $ */
3
4/*
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Heiko W.Rupp <hwr@pilhuhn.de>
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#ifndef _NETINET_IP_GRE_H_
34#define _NETINET_IP_GRE_H_
35
36/* Protocol number for Cisco's WCCP
37 * The Internet Draft is:
38 * draft-forster-wrec-wccp-v1-00.txt
39 */
40#define GREPROTO_WCCP 0x883e
41
42/*
43 * Names for GRE sysctl objects
44 */
45#define GRECTL_ALLOW 1 /* accept incoming GRE packets */
46#define GRECTL_WCCP 2 /* accept WCCPv1-style GRE packets */
47#define GRECTL_MAXID 3
48
49#define GRECTL_NAMES { \
50 { 0, 0 }, \
51 { "allow", CTLTYPE_INT }, \
52 { "wccp", CTLTYPE_INT }, \
53}
54
55#ifdef _KERNEL
56
57extern const struct pr_usrreqs gre_usrreqs;
58
59int gre_send(struct socket *, struct mbuf *, struct mbuf *,
60 struct mbuf *);
61#endif /* _KERNEL */
62#endif /* _NETINET_IP_GRE_H_ */