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 #include <linux/crc-ccitt.h> 46 47 /* 48 * The basic PPP frame. 49 */ 50 #define PPP_HDRLEN 4 /* octets for standard ppp header */ 51 #define PPP_FCSLEN 2 /* octets for FCS */ 52 #define PPP_MRU 1500 /* default MRU = max length of info field */ 53 54 #define PPP_ADDRESS(p) (((__u8 *)(p))[0]) 55 #define PPP_CONTROL(p) (((__u8 *)(p))[1]) 56 #define PPP_PROTOCOL(p) ((((__u8 *)(p))[2] << 8) + ((__u8 *)(p))[3]) 57 58 /* 59 * Significant octet values. 60 */ 61 #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ 62 #define PPP_UI 0x03 /* Unnumbered Information */ 63 #define PPP_FLAG 0x7e /* Flag Sequence */ 64 #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ 65 #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ 66 67 /* 68 * Protocol field values. 69 */ 70 #define PPP_IP 0x21 /* Internet Protocol */ 71 #define PPP_AT 0x29 /* AppleTalk Protocol */ 72 #define PPP_IPX 0x2b /* IPX protocol */ 73 #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ 74 #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ 75 #define PPP_MP 0x3d /* Multilink protocol */ 76 #define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ 77 #define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */ 78 #define PPP_COMP 0xfd /* compressed packet */ 79 #define PPP_MPLS_UC 0x0281 /* Multi Protocol Label Switching - Unicast */ 80 #define PPP_MPLS_MC 0x0283 /* Multi Protocol Label Switching - Multicast */ 81 #define PPP_IPCP 0x8021 /* IP Control Protocol */ 82 #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ 83 #define PPP_IPXCP 0x802b /* IPX Control Protocol */ 84 #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ 85 #define PPP_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */ 86 #define PPP_CCP 0x80fd /* Compression Control Protocol */ 87 #define PPP_MPLSCP 0x80fd /* MPLS Control Protocol */ 88 #define PPP_LCP 0xc021 /* Link Control Protocol */ 89 #define PPP_PAP 0xc023 /* Password Authentication Protocol */ 90 #define PPP_LQR 0xc025 /* Link Quality Report protocol */ 91 #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ 92 #define PPP_CBCP 0xc029 /* Callback Control Protocol */ 93 94 /* 95 * Values for FCS calculations. 96 */ 97 98 #define PPP_INITFCS 0xffff /* Initial FCS value */ 99 #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ 100 #define PPP_FCS(fcs, c) crc_ccitt_byte(fcs, c) 101 102 /* 103 * Extended asyncmap - allows any character to be escaped. 104 */ 105 106 typedef __u32 ext_accm[8]; 107 108 /* 109 * What to do with network protocol (NP) packets. 110 */ 111 enum 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 for LQRP and pppstats 120 */ 121 struct pppstat { 122 __u32 ppp_discards; /* # frames discarded */ 123 124 __u32 ppp_ibytes; /* bytes received */ 125 __u32 ppp_ioctects; /* bytes received not in error */ 126 __u32 ppp_ipackets; /* packets received */ 127 __u32 ppp_ierrors; /* receive errors */ 128 __u32 ppp_ilqrs; /* # LQR frames received */ 129 130 __u32 ppp_obytes; /* raw bytes sent */ 131 __u32 ppp_ooctects; /* frame bytes sent */ 132 __u32 ppp_opackets; /* packets sent */ 133 __u32 ppp_oerrors; /* transmit errors */ 134 __u32 ppp_olqrs; /* # LQR frames sent */ 135 }; 136 137 struct vjstat { 138 __u32 vjs_packets; /* outbound packets */ 139 __u32 vjs_compressed; /* outbound compressed packets */ 140 __u32 vjs_searches; /* searches for connection state */ 141 __u32 vjs_misses; /* times couldn't find conn. state */ 142 __u32 vjs_uncompressedin; /* inbound uncompressed packets */ 143 __u32 vjs_compressedin; /* inbound compressed packets */ 144 __u32 vjs_errorin; /* inbound unknown type packets */ 145 __u32 vjs_tossed; /* inbound packets tossed because of error */ 146 }; 147 148 struct compstat { 149 __u32 unc_bytes; /* total uncompressed bytes */ 150 __u32 unc_packets; /* total uncompressed packets */ 151 __u32 comp_bytes; /* compressed bytes */ 152 __u32 comp_packets; /* compressed packets */ 153 __u32 inc_bytes; /* incompressible bytes */ 154 __u32 inc_packets; /* incompressible packets */ 155 156 /* the compression ratio is defined as in_count / bytes_out */ 157 __u32 in_count; /* Bytes received */ 158 __u32 bytes_out; /* Bytes transmitted */ 159 160 double ratio; /* not computed in kernel. */ 161 }; 162 163 struct ppp_stats { 164 struct pppstat p; /* basic PPP statistics */ 165 struct vjstat vj; /* VJ header compression statistics */ 166 }; 167 168 struct ppp_comp_stats { 169 struct compstat c; /* packet compression statistics */ 170 struct compstat d; /* packet decompression statistics */ 171 }; 172 173 /* 174 * The following structure records the time in seconds since 175 * the last NP packet was sent or received. 176 */ 177 struct ppp_idle { 178 time_t xmit_idle; /* time since last NP packet sent */ 179 time_t recv_idle; /* time since last NP packet received */ 180 }; 181 182 #ifndef __P 183 #ifdef __STDC__ 184 #define __P(x) x 185 #else 186 #define __P(x) () 187 #endif 188 #endif 189 190 #endif /* _PPP_DEFS_H_ */ 191