1/* $OpenBSD: ppp_defs.h,v 1.13 2002/09/13 00:12:07 deraadt Exp $ */ 2/* $NetBSD: ppp_defs.h,v 1.1 1995/07/04 06:28:26 paulus Exp $ */ 3 4/* 5 * ppp_defs.h - PPP definitions. 6 * 7 * Copyright (c) 1989-2002 Paul Mackerras. 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 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The name(s) of the authors of this software must not be used to 22 * endorse or promote products derived from this software without 23 * prior written permission. 24 * 25 * 4. Redistributions of any form whatsoever must retain the following 26 * acknowledgment: 27 * "This product includes software developed by Paul Mackerras 28 * <paulus@samba.org>". 29 * 30 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO 31 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 32 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY 33 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 34 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 35 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 36 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 37 */ 38 39#ifndef _PPP_DEFS_H_ 40#define _PPP_DEFS_H_ 41 42/* 43 * The basic PPP frame. 44 */ 45#define PPP_HDRLEN 4 /* octets for standard ppp header */ 46#define PPP_FCSLEN 2 /* octets for FCS */ 47#define PPP_MRU 1500 /* default MRU = max length of info field */ 48 49#define PPP_ADDRESS(p) (((u_char *)(p))[0]) 50#define PPP_CONTROL(p) (((u_char *)(p))[1]) 51#define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3]) 52 53/* 54 * Significant octet values. 55 */ 56#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ 57#define PPP_UI 0x03 /* Unnumbered Information */ 58#define PPP_FLAG 0x7e /* Flag Sequence */ 59#define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ 60#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ 61 62/* 63 * Protocol field values. 64 */ 65#define PPP_IP 0x21 /* Internet Protocol */ 66#define PPP_XNS 0x25 /* Xerox NS */ 67#define PPP_AT 0x29 /* AppleTalk Protocol */ 68#define PPP_IPX 0x2b /* Internetwork Packet Exchange */ 69#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ 70#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ 71#define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ 72#define PPP_COMP 0xfd /* compressed packet */ 73#define PPP_IPCP 0x8021 /* IP Control Protocol */ 74#define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ 75#define PPP_IPXCP 0x802b /* IPX Control Protocol */ 76#define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ 77#define PPP_CCP 0x80fd /* Compression Control Protocol */ 78#define PPP_LCP 0xc021 /* Link Control Protocol */ 79#define PPP_PAP 0xc023 /* Password Authentication Protocol */ 80#define PPP_LQR 0xc025 /* Link Quality Report protocol */ 81#define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ 82#define PPP_CBCP 0xc029 /* Callback Control Protocol */ 83 84/* 85 * Values for FCS calculations. 86 */ 87#define PPP_INITFCS 0xffff /* Initial FCS value */ 88#define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ 89#define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) 90 91/* 92 * A 32-bit unsigned integral type. 93 */ 94#ifndef __BIT_TYPES_DEFINED__ 95#ifdef UINT32_T 96typedef UINT32_T u_int32_t; 97#else 98typedef unsigned int u_int32_t; 99typedef unsigned short u_int16_t; 100#endif 101#endif 102 103/* 104 * Extended asyncmap - allows any character to be escaped. 105 */ 106typedef u_int32_t ext_accm[8]; 107 108/* 109 * What to do with network protocol (NP) packets. 110 */ 111enum NPmode { 112 NPMODE_PASS, /* pass the packet through */ 113 NPMODE_DROP, /* silently drop the packet */ 114 NPMODE_ERROR, /* return an error */ 115 NPMODE_QUEUE /* save it up for later. */ 116}; 117 118/* 119 * Statistics. 120 */ 121struct pppstat { 122 u_int ppp_ibytes; /* bytes received */ 123 u_int ppp_ipackets; /* packets received */ 124 u_int ppp_ierrors; /* receive errors */ 125 u_int ppp_obytes; /* bytes sent */ 126 u_int ppp_opackets; /* packets sent */ 127 u_int ppp_oerrors; /* transmit errors */ 128}; 129 130struct vjstat { 131 u_int vjs_packets; /* outbound packets */ 132 u_int vjs_compressed; /* outbound compressed packets */ 133 u_int vjs_searches; /* searches for connection state */ 134 u_int vjs_misses; /* times couldn't find conn. state */ 135 u_int vjs_uncompressedin; /* inbound uncompressed packets */ 136 u_int vjs_compressedin; /* inbound compressed packets */ 137 u_int vjs_errorin; /* inbound unknown type packets */ 138 u_int vjs_tossed; /* inbound packets tossed because of error */ 139}; 140 141struct ppp_stats { 142 struct pppstat p; /* basic PPP statistics */ 143 struct vjstat vj; /* VJ header compression statistics */ 144}; 145 146struct compstat { 147 u_int unc_bytes; /* total uncompressed bytes */ 148 u_int unc_packets; /* total uncompressed packets */ 149 u_int comp_bytes; /* compressed bytes */ 150 u_int comp_packets; /* compressed packets */ 151 u_int inc_bytes; /* incompressible bytes */ 152 u_int inc_packets; /* incompressible packets */ 153 u_int ratio; /* recent compression ratio << 8 */ 154}; 155 156struct ppp_comp_stats { 157 struct compstat c; /* packet compression statistics */ 158 struct compstat d; /* packet decompression statistics */ 159}; 160 161/* 162 * The following structure records the time in seconds since 163 * the last NP packet was sent or received. 164 */ 165struct ppp_idle { 166 time_t xmit_idle; /* time since last NP packet sent */ 167 time_t recv_idle; /* time since last NP packet received */ 168}; 169 170#endif /* _PPP_DEFS_H_ */ 171