00001 /* 00002 * Copyright (c) 1982, 1986, 1993 00003 * The Regents of the University of California. All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. All advertising materials mentioning features or use of this software 00014 * must display the following acknowledgement: 00015 * This product includes software developed by the University of 00016 * California, Berkeley and its contributors. 00017 * 4. Neither the name of the University nor the names of its contributors 00018 * may be used to endorse or promote products derived from this software 00019 * without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 00022 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00023 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00024 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 00025 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00026 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00027 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00028 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00029 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00030 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00031 * SUCH DAMAGE. 00032 * 00033 * @(#)ip.h 8.2 (Berkeley) 6/1/94 00034 * $FreeBSD: src/sys/netinet/ip.h,v 1.17 1999/12/22 19:13:20 shin Exp $ 00035 */ 00036 00037 #ifndef OPPSIM_NETINET_IP_H_ 00038 #define OPPSIM_NETINET_IP_H_ 00039 00040 /* 00041 * Definitions for internet protocol version 4. 00042 * Per RFC 791, September 1981. 00043 */ 00044 #define IPVERSION 4 00045 00046 /* 00047 * Structure of an internet header, naked of options. 00048 */ 00049 struct ip { 00050 #ifdef _IP_VHL 00051 u_char ip_vhl; /* version << 4 | header length >> 2 */ 00052 #else 00053 #if BYTE_ORDER == LITTLE_ENDIAN 00054 u_char/*A*/ ip_hl:4, /* header length */ 00055 ip_v:4; /* version */ 00056 #endif 00057 #if BYTE_ORDER == BIG_ENDIAN 00058 u_char/*A*/ ip_v:4, /* version */ 00059 ip_hl:4; /* header length */ 00060 #endif 00061 #endif /* not _IP_VHL */ 00062 u_char ip_tos; /* type of service */ 00063 u_short ip_len; /* total length */ 00064 u_short ip_id; /* identification */ 00065 u_short ip_off; /* fragment offset field */ 00066 #define IP_RF 0x8000 /* reserved fragment flag */ 00067 #define IP_DF 0x4000 /* dont fragment flag */ 00068 #define IP_MF 0x2000 /* more fragments flag */ 00069 #define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ 00070 u_char ip_ttl; /* time to live */ 00071 u_char ip_p; /* protocol */ 00072 u_short ip_sum; /* checksum */ 00073 struct in_addr ip_src,ip_dst; /* source and dest address */ 00074 }; 00075 00076 #ifdef _IP_VHL 00077 #define IP_MAKE_VHL(v, hl) ((v) << 4 | (hl)) 00078 #define IP_VHL_HL(vhl) ((vhl) & 0x0f) 00079 #define IP_VHL_V(vhl) ((vhl) >> 4) 00080 #define IP_VHL_BORING 0x45 00081 #endif 00082 00083 #define IP_MAXPACKET 65535 /* maximum packet size */ 00084 00085 /* 00086 * Definitions for IP type of service (ip_tos) 00087 */ 00088 #define IPTOS_LOWDELAY 0x10 00089 #define IPTOS_THROUGHPUT 0x08 00090 #define IPTOS_RELIABILITY 0x04 00091 #define IPTOS_MINCOST 0x02 00092 /* ECN bits proposed by Sally Floyd */ 00093 #define IPTOS_CE 0x01 /* congestion experienced */ 00094 #define IPTOS_ECT 0x02 /* ECN-capable transport */ 00095 00096 00097 /* 00098 * Definitions for IP precedence (also in ip_tos) (hopefully unused) 00099 */ 00100 #define IPTOS_PREC_NETCONTROL 0xe0 00101 #define IPTOS_PREC_INTERNETCONTROL 0xc0 00102 #define IPTOS_PREC_CRITIC_ECP 0xa0 00103 #define IPTOS_PREC_FLASHOVERRIDE 0x80 00104 #define IPTOS_PREC_FLASH 0x60 00105 #define IPTOS_PREC_IMMEDIATE 0x40 00106 #define IPTOS_PREC_PRIORITY 0x20 00107 #define IPTOS_PREC_ROUTINE 0x00 00108 00109 /* 00110 * Definitions for options. 00111 */ 00112 #define IPOPT_COPIED(o) ((o)&0x80) 00113 #define IPOPT_CLASS(o) ((o)&0x60) 00114 #define IPOPT_NUMBER(o) ((o)&0x1f) 00115 00116 #define IPOPT_CONTROL 0x00 00117 #define IPOPT_RESERVED1 0x20 00118 #define IPOPT_DEBMEAS 0x40 00119 #define IPOPT_RESERVED2 0x60 00120 00121 #define IPOPT_EOL 0 /* end of option list */ 00122 #define IPOPT_NOP 1 /* no operation */ 00123 00124 #define IPOPT_RR 7 /* record packet route */ 00125 #define IPOPT_TS 68 /* timestamp */ 00126 #define IPOPT_SECURITY 130 /* provide s,c,h,tcc */ 00127 #define IPOPT_LSRR 131 /* loose source route */ 00128 #define IPOPT_SATID 136 /* satnet id */ 00129 #define IPOPT_SSRR 137 /* strict source route */ 00130 #define IPOPT_RA 148 /* router alert */ 00131 00132 /* 00133 * Offsets to fields in options other than EOL and NOP. 00134 */ 00135 #define IPOPT_OPTVAL 0 /* option ID */ 00136 #define IPOPT_OLEN 1 /* option length */ 00137 #define IPOPT_OFFSET 2 /* offset within option */ 00138 #define IPOPT_MINOFF 4 /* min value of above */ 00139 00140 /* 00141 * Time stamp option structure. 00142 */ 00143 struct ip_timestamp { 00144 u_char ipt_code; /* IPOPT_TS */ 00145 u_char ipt_len; /* size of structure (variable) */ 00146 u_char ipt_ptr; /* index of current entry */ 00147 #if BYTE_ORDER == LITTLE_ENDIAN 00148 u_char/*A*/ ipt_flg:4, /* flags, see below */ 00149 ipt_oflw:4; /* overflow counter */ 00150 #endif 00151 #if BYTE_ORDER == BIG_ENDIAN 00152 u_char/*A*/ ipt_oflw:4, /* overflow counter */ 00153 ipt_flg:4; /* flags, see below */ 00154 #endif 00155 union ipt_timestamp { 00156 n_long ipt_time[1]; 00157 struct ipt_ta { 00158 struct in_addr ipt_addr; 00159 n_long ipt_time; 00160 } ipt_ta[1]; 00161 } ipt_timestamp; 00162 }; 00163 00164 /* flag bits for ipt_flg */ 00165 #define IPOPT_TS_TSONLY 0 /* timestamps only */ 00166 #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */ 00167 #define IPOPT_TS_PRESPEC 3 /* specified modules only */ 00168 00169 /* bits for security (not byte swapped) */ 00170 #define IPOPT_SECUR_UNCLASS 0x0000 00171 #define IPOPT_SECUR_CONFID 0xf135 00172 #define IPOPT_SECUR_EFTO 0x789a 00173 #define IPOPT_SECUR_MMMM 0xbc4d 00174 #define IPOPT_SECUR_RESTR 0xaf13 00175 #define IPOPT_SECUR_SECRET 0xd788 00176 #define IPOPT_SECUR_TOPSECRET 0x6bc5 00177 00178 /* 00179 * Internet implementation parameters. 00180 */ 00181 #define MAXTTL 255 /* maximum time to live (seconds) */ 00182 #define IPDEFTTL 64 /* default ttl, from RFC 1340 */ 00183 #define IPFRAGTTL 60 /* time to live for frags, slowhz */ 00184 #define IPTTLDEC 1 /* subtracted when forwarding */ 00185 00186 #define IP_MSS 576 /* default maximum segment size */ 00187 00188 /*...*/ 00189 00190 #endif
1.7.1