/*	$Id: ppp_defs.h,v 1.14 1999/08/13 01:55:40 paulus Exp $	*//* * ppp_defs.h - PPP definitions. * * Copyright (c) 1994 The Australian National University. * All rights reserved. * * Permission to use, copy, modify, and distribute this software and its * documentation is hereby granted, provided that the above copyright * notice appears in all copies.  This software is provided without any * warranty, express or implied. The Australian National University * makes no representations about the suitability of this software for * any purpose. * * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. * * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, * OR MODIFICATIONS. */#ifndef _PPP_DEFS_H_#define _PPP_DEFS_H_/* * The basic PPP frame. */#define PPP_HDRLEN	4	/* octets for standard ppp header */#define PPP_FCSLEN	2	/* octets for FCS *//* * Packet sizes * * Note - lcp shouldn't be allowed to negotiate stuff outside these *	  limits.  See lcp.h in the pppd directory. * (XXX - these constants should simply be shared by lcp.c instead *	  of living in lcp.h) */#define	PPP_MTU		1500	/* Default MTU (size of Info field) */#define PPP_MAXMTU	65535 - (PPP_HDRLEN + PPP_FCSLEN)#define PPP_MINMTU	64#define PPP_MRU		1500	/* default MRU = max length of info field */#define PPP_MAXMRU	65000	/* Largest MRU we allow */#define PPP_MINMRU	128#define PPP_ADDRESS(p)	(((u_char *)(p))[0])#define PPP_CONTROL(p)	(((u_char *)(p))[1])#define PPP_PROTOCOL(p)	((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])/* * Significant octet values. */#define	PPP_ALLSTATIONS	0xff	/* All-Stations broadcast address */#define	PPP_UI		0x03	/* Unnumbered Information */#define	PPP_FLAG	0x7e	/* Flag Sequence */#define	PPP_ESCAPE	0x7d	/* Asynchronous Control Escape */#define	PPP_TRANS	0x20	/* Asynchronous transparency modifier *//* * Protocol field values. */#define PPP_IP		0x21	/* Internet Protocol */#define PPP_AT		0x29	/* AppleTalk Protocol */#define PPP_IPX		0x2b	/* IPX protocol */#define	PPP_VJC_COMP	0x2d	/* VJ compressed TCP */#define	PPP_VJC_UNCOMP	0x2f	/* VJ uncompressed TCP */#define PPP_IPV6	0x57	/* Internet Protocol Version 6 */#define PPP_COMP	0xfd	/* compressed packet */#define PPP_IPCP	0x8021	/* IP Control Protocol */#define PPP_ATCP	0x8029	/* AppleTalk Control Protocol */#define PPP_IPXCP	0x802b	/* IPX Control Protocol */#define PPP_IPV6CP	0x8057	/* IPv6 Control Protocol */#define PPP_CCP		0x80fd	/* Compression Control Protocol */#define PPP_LCP		0xc021	/* Link Control Protocol */#define PPP_PAP		0xc023	/* Password Authentication Protocol */#define PPP_LQR		0xc025	/* Link Quality Report protocol */#define PPP_CHAP	0xc223	/* Cryptographic Handshake Auth. Protocol */#define PPP_CBCP	0xc029	/* Callback Control Protocol *//* * Values for FCS calculations. */#define PPP_INITFCS	0xffff	/* Initial FCS value */#define PPP_GOODFCS	0xf0b8	/* Good final FCS value */#define PPP_FCS(fcs, c)	(((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])/* * A 32-bit unsigned integral type. */#if !defined(__BIT_TYPES_DEFINED__) && !defined(_BITYPES) \ && !defined(__FreeBSD__) && (NS_TARGET < 40)#ifdef	UINT32_Ttypedef UINT32_T	u_int32_t;#elsetypedef unsigned int	u_int32_t;typedef unsigned short  u_int16_t;#endif#endif/* * Extended asyncmap - allows any character to be escaped. */typedef u_int32_t	ext_accm[8];/* * What to do with network protocol (NP) packets. */enum NPmode {    NPMODE_PASS,		/* pass the packet through */    NPMODE_DROP,		/* silently drop the packet */    NPMODE_ERROR,		/* return an error */    NPMODE_QUEUE		/* save it up for later. */};/* * Statistics. */struct pppstat	{    unsigned int ppp_ibytes;	/* bytes received */    unsigned int ppp_ipackets;	/* packets received */    unsigned int ppp_ierrors;	/* receive errors */    unsigned int ppp_obytes;	/* bytes sent */    unsigned int ppp_opackets;	/* packets sent */    unsigned int ppp_oerrors;	/* transmit errors */};struct vjstat {    unsigned int vjs_packets;	/* outbound packets */    unsigned int vjs_compressed; /* outbound compressed packets */    unsigned int vjs_searches;	/* searches for connection state */    unsigned int vjs_misses;	/* times couldn't find conn. state */    unsigned int vjs_uncompressedin; /* inbound uncompressed packets */    unsigned int vjs_compressedin; /* inbound compressed packets */    unsigned int vjs_errorin;	/* inbound unknown type packets */    unsigned int vjs_tossed;	/* inbound packets tossed because of error */};struct ppp_stats {    struct pppstat p;		/* basic PPP statistics */    struct vjstat vj;		/* VJ header compression statistics */};struct compstat {    unsigned int unc_bytes;	/* total uncompressed bytes */    unsigned int unc_packets;	/* total uncompressed packets */    unsigned int comp_bytes;	/* compressed bytes */    unsigned int comp_packets;	/* compressed packets */    unsigned int inc_bytes;	/* incompressible bytes */    unsigned int inc_packets;	/* incompressible packets */    unsigned int ratio;		/* recent compression ratio << 8 */};struct ppp_comp_stats {    struct compstat c;		/* packet compression statistics */    struct compstat d;		/* packet decompression statistics */};/* * The following structure records the time in seconds since * the last NP packet was sent or received. */struct ppp_idle {    time_t xmit_idle;		/* time since last NP packet sent */    time_t recv_idle;		/* time since last NP packet received */};#ifndef __P#ifdef __STDC__#define __P(x)	x#else#define __P(x)	()#endif#endif#endif /* _PPP_DEFS_H_ */