1 /* $Id: ppp_defs.h,v 1.2 1994/09/21 01:31:06 paulus Exp $ */ 2 3 /* 4 * ppp_defs.h - PPP definitions. 5 * 6 * Copyright (c) 1994 The Australian National University. 7 * All rights reserved. 8 * 9 * Permission to use, copy, modify, and distribute this software and its 10 * documentation is hereby granted, provided that the above copyright 11 * notice appears in all copies. This software is provided without any 12 * warranty, express or implied. The Australian National University 13 * makes no representations about the suitability of this software for 14 * any purpose. 15 * 16 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY 17 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 18 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF 19 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY 20 * OF SUCH DAMAGE. 21 * 22 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, 23 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 24 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 25 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO 26 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 27 * OR MODIFICATIONS. 28 */ 29 30 /* 31 * ==FILEVERSION 20000114== 32 * 33 * NOTE TO MAINTAINERS: 34 * If you modify this file at all, please set the above date. 35 * ppp_defs.h is shipped with a PPP distribution as well as with the kernel; 36 * if everyone increases the FILEVERSION number above, then scripts 37 * can do the right thing when deciding whether to install a new ppp_defs.h 38 * file. Don't change the format of that line otherwise, so the 39 * installation script can recognize it. 40 */ 41 42 #ifndef _PPP_DEFS_H_ 43 #define _PPP_DEFS_H_ 44 45 /* 46 * The basic PPP frame. 47 */ 48 #define PPP_HDRLEN 4 /* octets for standard ppp header */ 49 #define PPP_FCSLEN 2 /* octets for FCS */ 50 #define PPP_MRU 1500 /* default MRU = max length of info field */ 51 52 #define PPP_ADDRESS(p) (((__u8 *)(p))[0]) 53 #define PPP_CONTROL(p) (((__u8 *)(p))[1]) 54 #define PPP_PROTOCOL(p) ((((__u8 *)(p))[2] << 8) + ((__u8 *)(p))[3]) 55 56 /* 57 * Significant octet values. 58 */ 59 #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ 60 #define PPP_UI 0x03 /* Unnumbered Information */ 61 #define PPP_FLAG 0x7e /* Flag Sequence */ 62 #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ 63 #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ 64 65 /* 66 * Protocol field values. 67 */ 68 #define PPP_IP 0x21 /* Internet Protocol */ 69 #define PPP_AT 0x29 /* AppleTalk Protocol */ 70 #define PPP_IPX 0x2b /* IPX protocol */ 71 #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ 72 #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ 73 #define PPP_MP 0x3d /* Multilink protocol */ 74 #define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ 75 #define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */ 76 #define PPP_COMP 0xfd /* compressed packet */ 77 #define PPP_IPCP 0x8021 /* IP Control Protocol */ 78 #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ 79 #define PPP_IPXCP 0x802b /* IPX Control Protocol */ 80 #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ 81 #define PPP_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */ 82 #define PPP_CCP 0x80fd /* Compression Control Protocol */ 83 #define PPP_LCP 0xc021 /* Link Control Protocol */ 84 #define PPP_PAP 0xc023 /* Password Authentication Protocol */ 85 #define PPP_LQR 0xc025 /* Link Quality Report protocol */ 86 #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ 87 #define PPP_CBCP 0xc029 /* Callback Control Protocol */ 88 89 /* 90 * Values for FCS calculations. 91 */ 92 93 #define PPP_INITFCS 0xffff /* Initial FCS value */ 94 #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ 95 #define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) 96 97 /* 98 * Extended asyncmap - allows any character to be escaped. 99 */ 100 101 typedef __u32 ext_accm[8]; 102 103 /* 104 * What to do with network protocol (NP) packets. 105 */ 106 enum NPmode { 107 NPMODE_PASS, /* pass the packet through */ 108 NPMODE_DROP, /* silently drop the packet */ 109 NPMODE_ERROR, /* return an error */ 110 NPMODE_QUEUE /* save it up for later. */ 111 }; 112 113 /* 114 * Statistics for LQRP and pppstats 115 */ 116 struct pppstat { 117 __u32 ppp_discards; /* # frames discarded */ 118 119 __u32 ppp_ibytes; /* bytes received */ 120 __u32 ppp_ioctects; /* bytes received not in error */ 121 __u32 ppp_ipackets; /* packets received */ 122 __u32 ppp_ierrors; /* receive errors */ 123 __u32 ppp_ilqrs; /* # LQR frames received */ 124 125 __u32 ppp_obytes; /* raw bytes sent */ 126 __u32 ppp_ooctects; /* frame bytes sent */ 127 __u32 ppp_opackets; /* packets sent */ 128 __u32 ppp_oerrors; /* transmit errors */ 129 __u32 ppp_olqrs; /* # LQR frames sent */ 130 }; 131 132 struct vjstat { 133 __u32 vjs_packets; /* outbound packets */ 134 __u32 vjs_compressed; /* outbound compressed packets */ 135 __u32 vjs_searches; /* searches for connection state */ 136 __u32 vjs_misses; /* times couldn't find conn. state */ 137 __u32 vjs_uncompressedin; /* inbound uncompressed packets */ 138 __u32 vjs_compressedin; /* inbound compressed packets */ 139 __u32 vjs_errorin; /* inbound unknown type packets */ 140 __u32 vjs_tossed; /* inbound packets tossed because of error */ 141 }; 142 143 struct compstat { 144 __u32 unc_bytes; /* total uncompressed bytes */ 145 __u32 unc_packets; /* total uncompressed packets */ 146 __u32 comp_bytes; /* compressed bytes */ 147 __u32 comp_packets; /* compressed packets */ 148 __u32 inc_bytes; /* incompressible bytes */ 149 __u32 inc_packets; /* incompressible packets */ 150 151 /* the compression ratio is defined as in_count / bytes_out */ 152 __u32 in_count; /* Bytes received */ 153 __u32 bytes_out; /* Bytes transmitted */ 154 155 double ratio; /* not computed in kernel. */ 156 }; 157 158 struct ppp_stats { 159 struct pppstat p; /* basic PPP statistics */ 160 struct vjstat vj; /* VJ header compression statistics */ 161 }; 162 163 struct ppp_comp_stats { 164 struct compstat c; /* packet compression statistics */ 165 struct compstat d; /* packet decompression statistics */ 166 }; 167 168 /* 169 * The following structure records the time in seconds since 170 * the last NP packet was sent or received. 171 */ 172 struct ppp_idle { 173 time_t xmit_idle; /* time since last NP packet sent */ 174 time_t recv_idle; /* time since last NP packet received */ 175 }; 176 177 #ifndef __P 178 #ifdef __STDC__ 179 #define __P(x) x 180 #else 181 #define __P(x) () 182 #endif 183 #endif 184 185 #endif /* _PPP_DEFS_H_ */ 186