1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org>
5 *          based on work by Toshiharu OHNO <tony-o@iij.ad.jp>
6 *                           Internet Initiative Japan, Inc (IIJ)
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31/*
32 *  Definition of protocol numbers
33 */
34#define	PROTO_IP	0x0021	/* IP */
35#define	PROTO_VJUNCOMP	0x002f	/* VJ Uncompressed */
36#define	PROTO_VJCOMP	0x002d	/* VJ Compressed */
37#define	PROTO_MP	0x003d	/* Multilink fragment */
38#ifndef NOINET6
39#define	PROTO_IPV6	0x0057	/* IPv6 */
40#endif
41#define	PROTO_ICOMPD	0x00fb	/* Individual link compressed */
42#define	PROTO_COMPD	0x00fd	/* Compressed datagram */
43
44#define PROTO_COMPRESSIBLE(p) (((p) & 0xff81) == 0x01)
45
46#define	PROTO_IPCP	0x8021
47#ifndef NOINET6
48#define	PROTO_IPV6CP	0x8057
49#endif
50#define	PROTO_ICCP	0x80fb
51#define	PROTO_CCP	0x80fd
52
53#define	PROTO_LCP	0xc021
54#define	PROTO_PAP	0xc023
55#define	PROTO_CBCP	0xc029
56#define	PROTO_LQR	0xc025
57#define	PROTO_CHAP	0xc223
58
59struct lcp;
60
61extern int proto_WrapperOctets(struct lcp *, u_short);
62struct mbuf *proto_Prepend(struct mbuf *, u_short, unsigned, int);
63
64extern struct layer protolayer;
65