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/*!\file net/ppp_defs.h
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* PPP definitions.
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*/
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/* $Id: ppp_defs.h,v 1.11 1997/04/30 05:46:24 paulus Exp $ */
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/*
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* ppp_defs.h - PPP definitions.
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*
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* Copyright (c) 1994 The Australian National University.
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* All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, provided that the above copyright
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* notice appears in all copies. This software is provided without any
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* warranty, express or implied. The Australian National University
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* makes no representations about the suitability of this software for
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* any purpose.
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*
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* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
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* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
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* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
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* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
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* OR MODIFICATIONS.
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*/
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#ifndef __NET_PPP_DEFS_H
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#define __NET_PPP_DEFS_H
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/*
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* The basic PPP frame.
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*/
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#define PPP_HDRLEN 4 /* octets for standard ppp header */
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#define PPP_FCSLEN 2 /* octets for FCS */
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/*
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* Packet sizes
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*
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* Note - lcp shouldn't be allowed to negotiate stuff outside these
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* limits. See lcp.h in the pppd directory.
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* (XXX - these constants should simply be shared by lcp.c instead
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* of living in lcp.h)
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*/
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#define PPP_MTU 1500 /* Default MTU (size of Info field) */
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#define PPP_MAXMTU 65535 - (PPP_HDRLEN + PPP_FCSLEN)
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#define PPP_MINMTU 64
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#define PPP_MRU 1500 /* default MRU = max length of info field */
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#define PPP_MAXMRU 65000 /* Largest MRU we allow */
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#define PPP_MINMRU 128
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#define PPP_ADDRESS(p) (((u_char *)(p))[0])
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#define PPP_CONTROL(p) (((u_char *)(p))[1])
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#define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])
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/*
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* Significant octet values.
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*/
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#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
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#define PPP_UI 0x03 /* Unnumbered Information */
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#define PPP_FLAG 0x7e /* Flag Sequence */
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#define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */
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#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */
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/*
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* Protocol field values.
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*/
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#define PPP_IP 0x0021 /* Raw IP */
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#define PPP_OSI 0x0023 /* OSI Network Layer */
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#define PPP_NS 0x0025 /* Xerox NS IDP */
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#define PPP_DECNET 0x0027 /* DECnet Phase IV */
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#define PPP_APPLE 0x0029 /* Appletalk */
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#define PPP_IPX 0x002b /* Novell IPX */
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#define PPP_VJC 0x002d /* Van Jacobson Compressed TCP/IP */
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#define PPP_VJNC 0x002f /* Van Jacobson Uncompressed TCP/IP */
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#define PPP_VJC_COMP PPP_VJC
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#define PPP_VJC_UNCOMP PPP_VJNC
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#define PPP_BRPDU 0x0031 /* Bridging PDU */
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#define PPP_STII 0x0033 /* Stream Protocol (ST-II) */
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#define PPP_VINES 0x0035 /* Banyan Vines */
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#define PPP_IPV6 0x0057 /* Internet Protocol Version 6 */
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#define PPP_COMP 0x00fd /* compressed packet */
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#define PPP_HELLO 0x0201 /* 802.1d Hello Packets */
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#define PPP_LUXCOM 0x0231 /* Luxcom */
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#define PPP_SNS 0x0233 /* Sigma Network Systems */
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#define PPP_IPCP 0x8021 /* IP Control Protocol */
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#define PPP_OSICP 0x8023 /* OSI Network Layer Control Protocol */
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#define PPP_NSCP 0x8025 /* Xerox NS IDP Control Protocol */
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#define PPP_DECNETCP 0x8027 /* DECnet Control Protocol */
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#define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */
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#define PPP_IPXCP 0x802b /* IPX Control Protocol */
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#define PPP_STIICP 0x8033 /* Strean Protocol Control Protocol */
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#define PPP_VINESCP 0x8035 /* Banyan Vines Control Protocol */
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#define PPP_CCP 0x80fd /* Compression Control Protocol */
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#define PPP_LCP 0xc021 /* Link Control Protocol */
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#define PPP_PAP 0xc023 /* Password Authentication Protocol */
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#define PPP_LQR 0xc025 /* Link Quality Report protocol */
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#define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */
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#define PPP_CBCP 0xc029 /* Callback Control Protocol */
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/*
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* Values for FCS calculations.
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*/
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#define PPP_INITFCS 0xffff /* Initial FCS value */
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#define PPP_GOODFCS 0xf0b8 /* Good final FCS value */
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#define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
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/*
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* A 32-bit unsigned integral type.
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*/
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#if !defined(__BIT_TYPES_DEFINED__) && !defined(_BITYPES) && !defined(__SYS_WTYPES_H)
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#ifdef UINT32_T
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typedef UINT32_T u_int32_t;
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#else
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typedef unsigned long u_int32_t;
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#endif
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#endif
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/*
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* Extended asyncmap - allows any character to be escaped.
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*/
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typedef u_int32_t ext_accm[8];
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/*
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* What to do with network protocol (NP) packets.
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*/
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enum NPmode {
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NPMODE_PASS, /* pass the packet through */
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NPMODE_DROP, /* silently drop the packet */
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NPMODE_ERROR, /* return an error */
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NPMODE_QUEUE /* save it up for later. */
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};
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/*
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* Statistics.
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*/
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struct pppstat {
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unsigned int ppp_ibytes; /* bytes received */
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unsigned int ppp_ipackets; /* packets received */
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unsigned int ppp_ierrors; /* receive errors */
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unsigned int ppp_obytes; /* bytes sent */
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unsigned int ppp_opackets; /* packets sent */
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unsigned int ppp_oerrors; /* transmit errors */
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};
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struct vjstat {
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unsigned int vjs_packets; /* outbound packets */
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unsigned int vjs_compressed; /* outbound compressed packets */
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unsigned int vjs_searches; /* searches for connection state */
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unsigned int vjs_misses; /* times couldn't find conn. state */
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unsigned int vjs_uncompressedin; /* inbound uncompressed packets */
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unsigned int vjs_compressedin; /* inbound compressed packets */
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unsigned int vjs_errorin; /* inbound unknown type packets */
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unsigned int vjs_tossed; /* inbound packets tossed because of error */
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};
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struct ppp_stats {
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struct pppstat p; /* basic PPP statistics */
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struct vjstat vj; /* VJ header compression statistics */
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};
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struct compstat {
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unsigned int unc_bytes; /* total uncompressed bytes */
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unsigned int unc_packets; /* total uncompressed packets */
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unsigned int comp_bytes; /* compressed bytes */
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unsigned int comp_packets; /* compressed packets */
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unsigned int inc_bytes; /* incompressible bytes */
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unsigned int inc_packets; /* incompressible packets */
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unsigned int ratio; /* recent compression ratio << 8 */
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};
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struct ppp_comp_stats {
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struct compstat c; /* packet compression statistics */
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struct compstat d; /* packet decompression statistics */
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};
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/*
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* The following structure records the time in seconds since
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* the last NP packet was sent or received.
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*/
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struct ppp_idle {
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time_t xmit_idle; /* time since last NP packet sent */
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time_t recv_idle; /* time since last NP packet received */
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};
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#endif
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