2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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)
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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.
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
34 * Definition of protocol numbers
36 #define PROTO_IP 0x0021 /* IP */
37 #define PROTO_VJUNCOMP 0x002f /* VJ Uncompressed */
38 #define PROTO_VJCOMP 0x002d /* VJ Compressed */
39 #define PROTO_MP 0x003d /* Multilink fragment */
41 #define PROTO_IPV6 0x0057 /* IPv6 */
43 #define PROTO_ICOMPD 0x00fb /* Individual link compressed */
44 #define PROTO_COMPD 0x00fd /* Compressed datagram */
46 #define PROTO_COMPRESSIBLE(p) (((p) & 0xff81) == 0x01)
48 #define PROTO_IPCP 0x8021
50 #define PROTO_IPV6CP 0x8057
52 #define PROTO_ICCP 0x80fb
53 #define PROTO_CCP 0x80fd
55 #define PROTO_LCP 0xc021
56 #define PROTO_PAP 0xc023
57 #define PROTO_CBCP 0xc029
58 #define PROTO_LQR 0xc025
59 #define PROTO_CHAP 0xc223
63 extern int proto_WrapperOctets(struct lcp *, u_short);
64 struct mbuf *proto_Prepend(struct mbuf *, u_short, unsigned, int);
66 extern struct layer protolayer;