1/* 2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * The contents of this file constitute Original Code as defined in and 7 * are subject to the Apple Public Source License Version 1.1 (the 8 * "License"). You may not use this file except in compliance with the 9 * License. Please obtain a copy of the License at 10 * http://www.apple.com/publicsource and read it before using this file. 11 * 12 * This Original Code and all software distributed under the License are 13 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER 14 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 15 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the 17 * License for the specific language governing rights and limitations 18 * under the License. 19 * 20 * @APPLE_LICENSE_HEADER_END@ 21 */ 22/* 23 * ppp_defs.h - PPP definitions. 24 * 25 * Copyright (c) 1994 The Australian National University. 26 * All rights reserved. 27 * 28 * Permission to use, copy, modify, and distribute this software and its 29 * documentation is hereby granted, provided that the above copyright 30 * notice appears in all copies. This software is provided without any 31 * warranty, express or implied. The Australian National University 32 * makes no representations about the suitability of this software for 33 * any purpose. 34 * 35 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY 36 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 37 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF 38 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY 39 * OF SUCH DAMAGE. 40 * 41 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, 42 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 43 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 44 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO 45 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 46 * OR MODIFICATIONS. 47 * 48 */ 49 50#ifndef _PPP_DEFS_H_ 51#define _PPP_DEFS_H_ 52#include <sys/appleapiopts.h> 53 54/* 55 * The basic PPP frame. 56 */ 57#define PPP_HDRLEN 4 /* octets for standard ppp header */ 58#define PPP_FCSLEN 2 /* octets for FCS */ 59#define PPP_MRU 1500 /* default MRU = max length of info field */ 60 61#define PPP_ADDRESS(p) (((u_char *)(p))[0]) 62#define PPP_CONTROL(p) (((u_char *)(p))[1]) 63#define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3]) 64 65/* 66 * Significant octet values. 67 */ 68#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ 69#define PPP_UI 0x03 /* Unnumbered Information */ 70#define PPP_FLAG 0x7e /* Flag Sequence */ 71#define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ 72#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ 73 74/* 75 * Protocol field values. 76 */ 77#define PPP_IP 0x21 /* Internet Protocol */ 78#define PPP_XNS 0x25 /* Xerox NS */ 79#define PPP_AT 0x29 /* AppleTalk Protocol */ 80#define PPP_IPX 0x2b /* IPX Datagram (RFC1552) */ 81#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ 82#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ 83#define PPP_COMP 0xfd /* compressed packet */ 84#define PPP_IPCP 0x8021 /* IP Control Protocol */ 85#define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ 86#define PPP_IPXCP 0x802b /* IPX Control Protocol (RFC1552) */ 87#define PPP_CCP 0x80fd /* Compression 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#define PPP_IPV6 0x57 /* Internet Protocol version 6*/ 94#define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ 95 96/* 97 * Values for FCS calculations. 98 */ 99#define PPP_INITFCS 0xffff /* Initial FCS value */ 100#define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ 101#define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) 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 unsigned int ppp_ibytes; /* bytes received */ 123 unsigned int ppp_ipackets; /* packets received */ 124 unsigned int ppp_ierrors; /* receive errors */ 125 unsigned int ppp_obytes; /* bytes sent */ 126 unsigned int ppp_opackets; /* packets sent */ 127 unsigned int ppp_oerrors; /* transmit errors */ 128}; 129 130struct vjstat { 131 unsigned int vjs_packets; /* outbound packets */ 132 unsigned int vjs_compressed; /* outbound compressed packets */ 133 unsigned int vjs_searches; /* searches for connection state */ 134 unsigned int vjs_misses; /* times couldn't find conn. state */ 135 unsigned int vjs_uncompressedin; /* inbound uncompressed packets */ 136 unsigned int vjs_compressedin; /* inbound compressed packets */ 137 unsigned int vjs_errorin; /* inbound unknown type packets */ 138 unsigned 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 unsigned int unc_bytes; /* total uncompressed bytes */ 148 unsigned int unc_packets; /* total uncompressed packets */ 149 unsigned int comp_bytes; /* compressed bytes */ 150 unsigned int comp_packets; /* compressed packets */ 151 unsigned int inc_bytes; /* incompressible bytes */ 152 unsigned int inc_packets; /* incompressible packets */ 153 unsigned 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