1 /* 2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* 29 * ppp_defs.h - PPP definitions. 30 * 31 * Copyright (c) 1994 The Australian National University. 32 * All rights reserved. 33 * 34 * Permission to use, copy, modify, and distribute this software and its 35 * documentation is hereby granted, provided that the above copyright 36 * notice appears in all copies. This software is provided without any 37 * warranty, express or implied. The Australian National University 38 * makes no representations about the suitability of this software for 39 * any purpose. 40 * 41 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY 42 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 43 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF 44 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY 45 * OF SUCH DAMAGE. 46 * 47 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, 48 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 49 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 50 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO 51 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 52 * OR MODIFICATIONS. 53 * 54 */ 55 56 #ifndef _PPP_DEFS_H_ 57 #define _PPP_DEFS_H_ 58 #include <sys/appleapiopts.h> 59 60 /* 61 * The basic PPP frame. 62 */ 63 #define PPP_HDRLEN 4 /* octets for standard ppp header */ 64 #define PPP_FCSLEN 2 /* octets for FCS */ 65 #define PPP_MRU 1500 /* default MRU = max length of info field */ 66 67 #define PPP_ADDRESS(p) (((u_char *)(p))[0]) 68 #define PPP_CONTROL(p) (((u_char *)(p))[1]) 69 #define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3]) 70 71 /* 72 * Significant octet values. 73 */ 74 #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ 75 #define PPP_UI 0x03 /* Unnumbered Information */ 76 #define PPP_FLAG 0x7e /* Flag Sequence */ 77 #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ 78 #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ 79 80 /* 81 * Protocol field values. 82 */ 83 #define PPP_IP 0x21 /* Internet Protocol */ 84 #define PPP_XNS 0x25 /* Xerox NS */ 85 #define PPP_AT 0x29 /* AppleTalk Protocol */ 86 #define PPP_IPX 0x2b /* IPX Datagram (RFC1552) */ 87 #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ 88 #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ 89 #define PPP_COMP 0xfd /* compressed packet */ 90 #define PPP_IPCP 0x8021 /* IP Control Protocol */ 91 #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ 92 #define PPP_IPXCP 0x802b /* IPX Control Protocol (RFC1552) */ 93 #define PPP_CCP 0x80fd /* Compression Control Protocol */ 94 #define PPP_LCP 0xc021 /* Link Control Protocol */ 95 #define PPP_PAP 0xc023 /* Password Authentication Protocol */ 96 #define PPP_LQR 0xc025 /* Link Quality Report protocol */ 97 #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ 98 #define PPP_CBCP 0xc029 /* Callback Control Protocol */ 99 #define PPP_IPV6 0x57 /* Internet Protocol version 6*/ 100 #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ 101 102 /* 103 * Values for FCS calculations. 104 */ 105 #define PPP_INITFCS 0xffff /* Initial FCS value */ 106 #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ 107 #define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) 108 109 /* 110 * Extended asyncmap - allows any character to be escaped. 111 */ 112 typedef u_int32_t ext_accm[8]; 113 114 /* 115 * What to do with network protocol (NP) packets. 116 */ 117 enum NPmode { 118 NPMODE_PASS, /* pass the packet through */ 119 NPMODE_DROP, /* silently drop the packet */ 120 NPMODE_ERROR, /* return an error */ 121 NPMODE_QUEUE /* save it up for later. */ 122 }; 123 124 /* 125 * Statistics. 126 */ 127 struct pppstat { 128 unsigned int ppp_ibytes; /* bytes received */ 129 unsigned int ppp_ipackets; /* packets received */ 130 unsigned int ppp_ierrors; /* receive errors */ 131 unsigned int ppp_obytes; /* bytes sent */ 132 unsigned int ppp_opackets; /* packets sent */ 133 unsigned int ppp_oerrors; /* transmit errors */ 134 }; 135 136 struct vjstat { 137 unsigned int vjs_packets; /* outbound packets */ 138 unsigned int vjs_compressed; /* outbound compressed packets */ 139 unsigned int vjs_searches; /* searches for connection state */ 140 unsigned int vjs_misses; /* times couldn't find conn. state */ 141 unsigned int vjs_uncompressedin; /* inbound uncompressed packets */ 142 unsigned int vjs_compressedin; /* inbound compressed packets */ 143 unsigned int vjs_errorin; /* inbound unknown type packets */ 144 unsigned int vjs_tossed; /* inbound packets tossed because of error */ 145 }; 146 147 struct ppp_stats { 148 struct pppstat p; /* basic PPP statistics */ 149 struct vjstat vj; /* VJ header compression statistics */ 150 }; 151 152 struct compstat { 153 unsigned int unc_bytes; /* total uncompressed bytes */ 154 unsigned int unc_packets; /* total uncompressed packets */ 155 unsigned int comp_bytes; /* compressed bytes */ 156 unsigned int comp_packets; /* compressed packets */ 157 unsigned int inc_bytes; /* incompressible bytes */ 158 unsigned int inc_packets; /* incompressible packets */ 159 unsigned int ratio; /* recent compression ratio << 8 */ 160 }; 161 162 struct ppp_comp_stats { 163 struct compstat c; /* packet compression statistics */ 164 struct compstat d; /* packet decompression statistics */ 165 }; 166 167 /* 168 * The following structure records the time in seconds since 169 * the last NP packet was sent or received. 170 */ 171 struct ppp_idle { 172 time_t xmit_idle; /* time since last NP packet sent */ 173 time_t recv_idle; /* time since last NP packet received */ 174 }; 175 176 #endif /* _PPP_DEFS_H_ */ 177