ppp_defs.h revision 1.5.12.1
1 /* $NetBSD: ppp_defs.h,v 1.5.12.1 1999/06/28 06:36:57 itojun Exp $ */ 2 /* Id: ppp_defs.h,v 1.11 1997/04/30 05:46:24 paulus Exp */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* 34 * ppp_defs.h - PPP definitions. 35 * 36 * Copyright (c) 1994 The Australian National University. 37 * All rights reserved. 38 * 39 * Permission to use, copy, modify, and distribute this software and its 40 * documentation is hereby granted, provided that the above copyright 41 * notice appears in all copies. This software is provided without any 42 * warranty, express or implied. The Australian National University 43 * makes no representations about the suitability of this software for 44 * any purpose. 45 * 46 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY 47 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 48 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF 49 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY 50 * OF SUCH DAMAGE. 51 * 52 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, 53 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 54 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 55 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO 56 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 57 * OR MODIFICATIONS. 58 */ 59 60 #ifndef _NET_PPP_DEFS_H_ 61 #define _NET_PPP_DEFS_H_ 62 63 /* 64 * The basic PPP frame. 65 */ 66 #define PPP_HDRLEN 4 /* octets for standard ppp header */ 67 #define PPP_FCSLEN 2 /* octets for FCS */ 68 69 /* 70 * Packet sizes 71 * 72 * Note - lcp shouldn't be allowed to negotiate stuff outside these 73 * limits. See lcp.h in the pppd directory. 74 * (XXX - these constants should simply be shared by lcp.c instead 75 * of living in lcp.h) 76 */ 77 #define PPP_MTU 1500 /* Default MTU (size of Info field) */ 78 #define PPP_MAXMTU 65535 - (PPP_HDRLEN + PPP_FCSLEN) 79 #define PPP_MINMTU 64 80 #define PPP_MRU 1500 /* default MRU = max length of info field */ 81 #define PPP_MAXMRU 65000 /* Largest MRU we allow */ 82 #define PPP_MINMRU 128 83 84 #define PPP_ADDRESS(p) (((u_char *)(p))[0]) 85 #define PPP_CONTROL(p) (((u_char *)(p))[1]) 86 #define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3]) 87 88 /* 89 * Significant octet values. 90 */ 91 #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ 92 #define PPP_UI 0x03 /* Unnumbered Information */ 93 #define PPP_FLAG 0x7e /* Flag Sequence */ 94 #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ 95 #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ 96 97 /* 98 * Protocol field values. 99 */ 100 #define PPP_IP 0x21 /* Internet Protocol */ 101 #define PPP_AT 0x29 /* AppleTalk Protocol */ 102 #define PPP_IPX 0x2b /* IPX protocol */ 103 #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ 104 #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ 105 #define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ 106 #define PPP_COMP 0xfd /* compressed packet */ 107 #define PPP_IPCP 0x8021 /* IP Control Protocol */ 108 #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ 109 #define PPP_IPXCP 0x802b /* IPX Control Protocol */ 110 #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ 111 #define PPP_CCP 0x80fd /* Compression Control Protocol */ 112 #define PPP_LCP 0xc021 /* Link Control Protocol */ 113 #define PPP_PAP 0xc023 /* Password Authentication Protocol */ 114 #define PPP_LQR 0xc025 /* Link Quality Report protocol */ 115 #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ 116 #define PPP_CBCP 0xc029 /* Callback Control Protocol */ 117 118 /* 119 * Values for FCS calculations. 120 */ 121 #define PPP_INITFCS 0xffff /* Initial FCS value */ 122 #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ 123 #define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) 124 125 /* 126 * A 32-bit unsigned integral type. 127 */ 128 #if !defined(__BIT_TYPES_DEFINED__) && !defined(_BITYPES) && !defined(__FreeBSD__) 129 #ifdef UINT32_T 130 typedef UINT32_T u_int32_t; 131 #else 132 typedef unsigned int u_int32_t; 133 #endif 134 #endif 135 136 /* 137 * Extended asyncmap - allows any character to be escaped. 138 */ 139 typedef u_int32_t ext_accm[8]; 140 141 /* 142 * What to do with network protocol (NP) packets. 143 */ 144 enum NPmode { 145 NPMODE_PASS, /* pass the packet through */ 146 NPMODE_DROP, /* silently drop the packet */ 147 NPMODE_ERROR, /* return an error */ 148 NPMODE_QUEUE /* save it up for later. */ 149 }; 150 151 /* 152 * Statistics. 153 */ 154 struct pppstat { 155 unsigned int ppp_ibytes; /* bytes received */ 156 unsigned int ppp_ipackets; /* packets received */ 157 unsigned int ppp_ierrors; /* receive errors */ 158 unsigned int ppp_obytes; /* bytes sent */ 159 unsigned int ppp_opackets; /* packets sent */ 160 unsigned int ppp_oerrors; /* transmit errors */ 161 }; 162 163 struct vjstat { 164 unsigned int vjs_packets; /* outbound packets */ 165 unsigned int vjs_compressed; /* outbound compressed packets */ 166 unsigned int vjs_searches; /* searches for connection state */ 167 unsigned int vjs_misses; /* times couldn't find conn. state */ 168 unsigned int vjs_uncompressedin; /* inbound uncompressed packets */ 169 unsigned int vjs_compressedin; /* inbound compressed packets */ 170 unsigned int vjs_errorin; /* inbound unknown type packets */ 171 unsigned int vjs_tossed; /* inbound packets tossed because of error */ 172 }; 173 174 struct ppp_stats { 175 struct pppstat p; /* basic PPP statistics */ 176 struct vjstat vj; /* VJ header compression statistics */ 177 }; 178 179 struct compstat { 180 unsigned int unc_bytes; /* total uncompressed bytes */ 181 unsigned int unc_packets; /* total uncompressed packets */ 182 unsigned int comp_bytes; /* compressed bytes */ 183 unsigned int comp_packets; /* compressed packets */ 184 unsigned int inc_bytes; /* incompressible bytes */ 185 unsigned int inc_packets; /* incompressible packets */ 186 unsigned int ratio; /* recent compression ratio << 8 */ 187 }; 188 189 struct ppp_comp_stats { 190 struct compstat c; /* packet compression statistics */ 191 struct compstat d; /* packet decompression statistics */ 192 }; 193 194 /* 195 * The following structure records the time in seconds since 196 * the last NP packet was sent or received. 197 */ 198 struct ppp_idle { 199 time_t xmit_idle; /* time since last NP packet sent */ 200 time_t recv_idle; /* time since last NP packet received */ 201 }; 202 203 #ifndef __P 204 #ifdef __STDC__ 205 #define __P(x) x 206 #else 207 #define __P(x) () 208 #endif 209 #endif 210 211 #endif /* _NET_PPP_DEFS_H_ */ 212
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