1/* $Id: ppp_defs.h,v 1.11 2002/12/06 09:49:15 paulus Exp $ */ 2 3/* 4 * ppp_defs.h - PPP definitions. 5 * 6 * Copyright (c) 1989-2002 Paul Mackerras. 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 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. The name(s) of the authors of this software must not be used to 21 * endorse or promote products derived from this software without 22 * prior written permission. 23 * 24 * 4. Redistributions of any form whatsoever must retain the following 25 * acknowledgment: 26 * "This product includes software developed by Paul Mackerras 27 * <paulus@samba.org>". 28 * 29 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO 30 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 31 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY 32 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 33 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 34 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 35 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 36 */ 37 38/* 39 * ==FILEVERSION 20020521== 40 * 41 * NOTE TO MAINTAINERS: 42 * If you modify this file at all, please set the above date. 43 * ppp_defs.h is shipped with a PPP distribution as well as with the kernel; 44 * if everyone increases the FILEVERSION number above, then scripts 45 * can do the right thing when deciding whether to install a new ppp_defs.h 46 * file. Don't change the format of that line otherwise, so the 47 * installation script can recognize it. 48 */ 49 50#ifndef _PPP_DEFS_H_ 51#define _PPP_DEFS_H_ 52 53/* 54 * The basic PPP frame. 55 */ 56#define PPP_HDRLEN 4 /* octets for standard ppp header */ 57#define PPP_FCSLEN 2 /* octets for FCS */ 58#define PPP_MRU 1500 /* default MRU = max length of info field */ 59 60#define PPP_ADDRESS(p) (((__u8 *)(p))[0]) 61#define PPP_CONTROL(p) (((__u8 *)(p))[1]) 62#define PPP_PROTOCOL(p) ((((__u8 *)(p))[2] << 8) + ((__u8 *)(p))[3]) 63 64/* 65 * Significant octet values. 66 */ 67#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ 68#define PPP_UI 0x03 /* Unnumbered Information */ 69#define PPP_FLAG 0x7e /* Flag Sequence */ 70#define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ 71#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ 72 73/* 74 * Protocol field values. 75 */ 76#define PPP_IP 0x21 /* Internet Protocol */ 77#define PPP_AT 0x29 /* AppleTalk Protocol */ 78#define PPP_IPX 0x2b /* IPX protocol */ 79#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ 80#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ 81#define PPP_MP 0x3d /* Multilink protocol */ 82#define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ 83#define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */ 84#define PPP_COMP 0xfd /* compressed packet */ 85#define PPP_IPCP 0x8021 /* IP Control Protocol */ 86#define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ 87#define PPP_IPXCP 0x802b /* IPX Control Protocol */ 88#define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ 89#define PPP_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */ 90#define PPP_CCP 0x80fd /* Compression Control Protocol */ 91#define PPP_ECPFRAG 0x8055 /* ECP at link level (below MP bundle) */ 92#define PPP_ECP 0x8053 /* Encryption Control Protocol */ 93#define PPP_LCP 0xc021 /* Link Control Protocol */ 94#define PPP_PAP 0xc023 /* Password Authentication Protocol */ 95#define PPP_LQR 0xc025 /* Link Quality Report protocol */ 96#define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ 97#define PPP_CBCP 0xc029 /* Callback Control Protocol */ 98 99/* 100 * Values for FCS calculations. 101 */ 102 103#define PPP_INITFCS 0xffff /* Initial FCS value */ 104#define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ 105#define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) 106 107/* 108 * Extended asyncmap - allows any character to be escaped. 109 */ 110 111typedef __u32 ext_accm[8]; 112 113/* 114 * What to do with network protocol (NP) packets. 115 */ 116enum NPmode { 117 NPMODE_PASS, /* pass the packet through */ 118 NPMODE_DROP, /* silently drop the packet */ 119 NPMODE_ERROR, /* return an error */ 120 NPMODE_QUEUE /* save it up for later. */ 121}; 122 123/* 124 * Statistics for LQRP and pppstats 125 */ 126struct pppstat { 127 __u32 ppp_discards; /* # frames discarded */ 128 129 __u32 ppp_ibytes; /* bytes received */ 130 __u32 ppp_ioctects; /* bytes received not in error */ 131 __u32 ppp_ipackets; /* packets received */ 132 __u32 ppp_ierrors; /* receive errors */ 133 __u32 ppp_ilqrs; /* # LQR frames received */ 134 135 __u32 ppp_obytes; /* raw bytes sent */ 136 __u32 ppp_ooctects; /* frame bytes sent */ 137 __u32 ppp_opackets; /* packets sent */ 138 __u32 ppp_oerrors; /* transmit errors */ 139 __u32 ppp_olqrs; /* # LQR frames sent */ 140}; 141 142struct vjstat { 143 __u32 vjs_packets; /* outbound packets */ 144 __u32 vjs_compressed; /* outbound compressed packets */ 145 __u32 vjs_searches; /* searches for connection state */ 146 __u32 vjs_misses; /* times couldn't find conn. state */ 147 __u32 vjs_uncompressedin; /* inbound uncompressed packets */ 148 __u32 vjs_compressedin; /* inbound compressed packets */ 149 __u32 vjs_errorin; /* inbound unknown type packets */ 150 __u32 vjs_tossed; /* inbound packets tossed because of error */ 151}; 152 153struct compstat { 154 __u32 unc_bytes; /* total uncompressed bytes */ 155 __u32 unc_packets; /* total uncompressed packets */ 156 __u32 comp_bytes; /* compressed bytes */ 157 __u32 comp_packets; /* compressed packets */ 158 __u32 inc_bytes; /* incompressible bytes */ 159 __u32 inc_packets; /* incompressible packets */ 160 161 /* the compression ratio is defined as in_count / bytes_out */ 162 __u32 in_count; /* Bytes received */ 163 __u32 bytes_out; /* Bytes transmitted */ 164 165 double ratio; /* not computed in kernel. */ 166}; 167 168struct ppp_stats { 169 struct pppstat p; /* basic PPP statistics */ 170 struct vjstat vj; /* VJ header compression statistics */ 171}; 172 173struct ppp_comp_stats { 174 struct compstat c; /* packet compression statistics */ 175 struct compstat d; /* packet decompression statistics */ 176}; 177 178/* 179 * The following structure records the time in seconds since 180 * the last NP packet was sent or received. 181 */ 182struct ppp_idle { 183 time_t xmit_idle; /* time since last NP packet sent */ 184 time_t recv_idle; /* time since last NP packet received */ 185}; 186 187#ifndef __P 188#ifdef __STDC__ 189#define __P(x) x 190#else 191#define __P(x) () 192#endif 193#endif 194 195#endif /* _PPP_DEFS_H_ */ 196