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      1 /*-
      2  * Copyright (c) 1996 - 2001 Brian Somers <brian (at) Awfulhak.org>
      3  *          based on work by Toshiharu OHNO <tony-o (at) iij.ad.jp>
      4  *                           Internet Initiative Japan, Inc (IIJ)
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  *
     28  * $FreeBSD: src/usr.sbin/ppp/proto.h,v 1.5.40.1 2010/12/21 17:10:29 kensmith Exp $
     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 
     59 struct lcp;
     60 
     61 extern int proto_WrapperOctets(struct lcp *, u_short);
     62 struct mbuf *proto_Prepend(struct mbuf *, u_short, unsigned, int);
     63 
     64 extern struct layer protolayer;
     65