1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 3*0Sstevel@tonic-gate * Use is subject to license terms. 4*0Sstevel@tonic-gate */ 5*0Sstevel@tonic-gate 6*0Sstevel@tonic-gate /* 7*0Sstevel@tonic-gate * Copyright (c) 1982, 1986 Regents of the University of California. 8*0Sstevel@tonic-gate * All rights reserved. 9*0Sstevel@tonic-gate * 10*0Sstevel@tonic-gate * Redistribution and use in source and binary forms are permitted 11*0Sstevel@tonic-gate * provided that this notice is preserved and that due credit is given 12*0Sstevel@tonic-gate * to the University of California at Berkeley. The name of the University 13*0Sstevel@tonic-gate * may not be used to endorse or promote products derived from this 14*0Sstevel@tonic-gate * software without specific prior written permission. This software 15*0Sstevel@tonic-gate * is provided ``as is'' without express or implied warranty. 16*0Sstevel@tonic-gate */ 17*0Sstevel@tonic-gate 18*0Sstevel@tonic-gate /* 19*0Sstevel@tonic-gate * Definitions for internet protocol version 4. 20*0Sstevel@tonic-gate * Per RFC 791, September 1981. 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate 23*0Sstevel@tonic-gate #ifndef _NETINET_IP_H 24*0Sstevel@tonic-gate #define _NETINET_IP_H 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 27*0Sstevel@tonic-gate /* ip.h 1.13 88/08/19 SMI; from UCB 7.6.1.1 3/15/88 */ 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate #include <sys/isa_defs.h> 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #ifdef __cplusplus 32*0Sstevel@tonic-gate extern "C" { 33*0Sstevel@tonic-gate #endif 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate #define IPVERSION 4 36*0Sstevel@tonic-gate 37*0Sstevel@tonic-gate /* 38*0Sstevel@tonic-gate * Structure of an internet header, naked of options. 39*0Sstevel@tonic-gate */ 40*0Sstevel@tonic-gate struct ip { 41*0Sstevel@tonic-gate #ifdef _BIT_FIELDS_LTOH 42*0Sstevel@tonic-gate uchar_t ip_hl:4, /* header length */ 43*0Sstevel@tonic-gate ip_v:4; /* version */ 44*0Sstevel@tonic-gate #else 45*0Sstevel@tonic-gate uchar_t ip_v:4, /* version */ 46*0Sstevel@tonic-gate ip_hl:4; /* header length */ 47*0Sstevel@tonic-gate #endif 48*0Sstevel@tonic-gate uchar_t ip_tos; /* type of service */ 49*0Sstevel@tonic-gate ushort_t ip_len; /* total length */ 50*0Sstevel@tonic-gate ushort_t ip_id; /* identification */ 51*0Sstevel@tonic-gate ushort_t ip_off; /* fragment offset field */ 52*0Sstevel@tonic-gate #define IP_DF 0x4000 /* dont fragment flag */ 53*0Sstevel@tonic-gate #define IP_MF 0x2000 /* more fragments flag */ 54*0Sstevel@tonic-gate uchar_t ip_ttl; /* time to live */ 55*0Sstevel@tonic-gate uchar_t ip_p; /* protocol */ 56*0Sstevel@tonic-gate ushort_t ip_sum; /* checksum */ 57*0Sstevel@tonic-gate struct in_addr ip_src, ip_dst; /* source and dest address */ 58*0Sstevel@tonic-gate }; 59*0Sstevel@tonic-gate 60*0Sstevel@tonic-gate #define IP_MAXPACKET 65535 /* maximum packet size */ 61*0Sstevel@tonic-gate 62*0Sstevel@tonic-gate /* 63*0Sstevel@tonic-gate * Definitions for IP type of service (ip_tos) 64*0Sstevel@tonic-gate */ 65*0Sstevel@tonic-gate #define IPTOS_LOWDELAY 0x10 66*0Sstevel@tonic-gate #define IPTOS_THROUGHPUT 0x08 67*0Sstevel@tonic-gate #define IPTOS_RELIABILITY 0x04 68*0Sstevel@tonic-gate #define IPTOS_ECT 0x02 /* ECN-Capable Transport flag */ 69*0Sstevel@tonic-gate #define IPTOS_CE 0x01 /* ECN-Congestion Experienced flag */ 70*0Sstevel@tonic-gate 71*0Sstevel@tonic-gate /* 72*0Sstevel@tonic-gate * Definitions for IP precedence (also in ip_tos) (hopefully unused) 73*0Sstevel@tonic-gate */ 74*0Sstevel@tonic-gate #define IPTOS_PREC_NETCONTROL 0xe0 75*0Sstevel@tonic-gate #define IPTOS_PREC_INTERNETCONTROL 0xc0 76*0Sstevel@tonic-gate #define IPTOS_PREC_CRITIC_ECP 0xa0 77*0Sstevel@tonic-gate #define IPTOS_PREC_FLASHOVERRIDE 0x80 78*0Sstevel@tonic-gate #define IPTOS_PREC_FLASH 0x60 79*0Sstevel@tonic-gate #define IPTOS_PREC_IMMEDIATE 0x40 80*0Sstevel@tonic-gate #define IPTOS_PREC_PRIORITY 0x20 81*0Sstevel@tonic-gate #define IPTOS_PREC_ROUTINE 0x00 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate /* 84*0Sstevel@tonic-gate * Definitions for options. 85*0Sstevel@tonic-gate */ 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate /* Bits in the option value */ 88*0Sstevel@tonic-gate #define IPOPT_COPY 0x80 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate #define IPOPT_COPIED(o) ((o)&0x80) 91*0Sstevel@tonic-gate #define IPOPT_CLASS(o) ((o)&0x60) 92*0Sstevel@tonic-gate #define IPOPT_NUMBER(o) ((o)&0x1f) 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate #define IPOPT_CONTROL 0x00 95*0Sstevel@tonic-gate #define IPOPT_RESERVED1 0x20 96*0Sstevel@tonic-gate #define IPOPT_DEBMEAS 0x40 97*0Sstevel@tonic-gate #define IPOPT_RESERVED2 0x60 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate #define IPOPT_EOL 0x00 /* end of option list */ 100*0Sstevel@tonic-gate #define IPOPT_NOP 0x01 /* no operation */ 101*0Sstevel@tonic-gate 102*0Sstevel@tonic-gate #define IPOPT_RR 0x07 /* record packet route */ 103*0Sstevel@tonic-gate #define IPOPT_RTRALERT 0x14 /* router alert */ 104*0Sstevel@tonic-gate #define IPOPT_TS 0x44 /* timestamp */ 105*0Sstevel@tonic-gate #define IPOPT_SECURITY 0x82 /* provide s,c,h,tcc */ 106*0Sstevel@tonic-gate #define IPOPT_LSRR 0x83 /* loose source route */ 107*0Sstevel@tonic-gate #define IPOPT_EXTSEC 0x85 108*0Sstevel@tonic-gate #define IPOPT_COMSEC 0x86 109*0Sstevel@tonic-gate #define IPOPT_SATID 0x88 /* satnet id */ 110*0Sstevel@tonic-gate #define IPOPT_SSRR 0x89 /* strict source route */ 111*0Sstevel@tonic-gate #define IPOPT_RA 0x94 112*0Sstevel@tonic-gate #define IPOPT_SDMDD 0x95 113*0Sstevel@tonic-gate 114*0Sstevel@tonic-gate /* 115*0Sstevel@tonic-gate * Offsets to fields in options other than EOL and NOP. 116*0Sstevel@tonic-gate */ 117*0Sstevel@tonic-gate #define IPOPT_OPTVAL 0 /* option ID */ 118*0Sstevel@tonic-gate #define IPOPT_OLEN 1 /* option length */ 119*0Sstevel@tonic-gate #define IPOPT_OFFSET 2 /* offset within option */ 120*0Sstevel@tonic-gate #define IPOPT_POS_OV_FLG 3 121*0Sstevel@tonic-gate #define IPOPT_MINOFF 4 /* min value of IPOPT_OFFSET */ 122*0Sstevel@tonic-gate 123*0Sstevel@tonic-gate 124*0Sstevel@tonic-gate /* Minimum for src and record route options */ 125*0Sstevel@tonic-gate #define IPOPT_MINOFF_SR IPOPT_MINOFF 126*0Sstevel@tonic-gate 127*0Sstevel@tonic-gate /* 128*0Sstevel@tonic-gate * Time stamp option structure. 129*0Sstevel@tonic-gate */ 130*0Sstevel@tonic-gate struct ip_timestamp { 131*0Sstevel@tonic-gate uchar_t ipt_code; /* IPOPT_TS */ 132*0Sstevel@tonic-gate uchar_t ipt_len; /* size of structure (variable) */ 133*0Sstevel@tonic-gate uchar_t ipt_ptr; /* index of current entry */ 134*0Sstevel@tonic-gate #ifdef _BIT_FIELDS_LTOH 135*0Sstevel@tonic-gate uchar_t ipt_flg:4, /* flags, see below */ 136*0Sstevel@tonic-gate ipt_oflw:4; /* overflow counter */ 137*0Sstevel@tonic-gate #else 138*0Sstevel@tonic-gate uchar_t ipt_oflw:4, /* overflow counter */ 139*0Sstevel@tonic-gate ipt_flg:4; /* flags, see below */ 140*0Sstevel@tonic-gate #endif 141*0Sstevel@tonic-gate union ipt_timestamp { 142*0Sstevel@tonic-gate uint32_t ipt_time[1]; 143*0Sstevel@tonic-gate struct ipt_ta { 144*0Sstevel@tonic-gate struct in_addr ipt_addr; 145*0Sstevel@tonic-gate uint32_t ipt_time; 146*0Sstevel@tonic-gate } ipt_ta[1]; 147*0Sstevel@tonic-gate } ipt_timestamp; 148*0Sstevel@tonic-gate }; 149*0Sstevel@tonic-gate 150*0Sstevel@tonic-gate /* flag bits for ipt_flg */ 151*0Sstevel@tonic-gate #define IPOPT_TS_TSONLY 0 /* timestamps only */ 152*0Sstevel@tonic-gate #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */ 153*0Sstevel@tonic-gate #define IPOPT_TS_PRESPEC 2 /* specified modules only */ 154*0Sstevel@tonic-gate #define IPOPT_TS_PRESPEC_RFC791 3 155*0Sstevel@tonic-gate 156*0Sstevel@tonic-gate /* Minimum for timestamp option */ 157*0Sstevel@tonic-gate #define IPOPT_MINOFF_IT 5 158*0Sstevel@tonic-gate #define IPOPT_MINLEN_IT 5 159*0Sstevel@tonic-gate 160*0Sstevel@tonic-gate #define IPOPT_TS_TIMELEN 4 /* Timestamp size */ 161*0Sstevel@tonic-gate 162*0Sstevel@tonic-gate /* bits for security (not byte swapped) */ 163*0Sstevel@tonic-gate #define IPOPT_SECUR_UNCLASS 0x0000 164*0Sstevel@tonic-gate #define IPOPT_SECUR_CONFID 0xf135 165*0Sstevel@tonic-gate #define IPOPT_SECUR_EFTO 0x789a 166*0Sstevel@tonic-gate #define IPOPT_SECUR_MMMM 0xbc4d 167*0Sstevel@tonic-gate #define IPOPT_SECUR_RESTR 0xaf13 168*0Sstevel@tonic-gate #define IPOPT_SECUR_SECRET 0xd788 169*0Sstevel@tonic-gate #define IPOPT_SECUR_TOPSECRET 0x6bc5 170*0Sstevel@tonic-gate 171*0Sstevel@tonic-gate /* 172*0Sstevel@tonic-gate * Internet implementation parameters. 173*0Sstevel@tonic-gate */ 174*0Sstevel@tonic-gate #define MAXTTL 255 /* maximum time to live (seconds) */ 175*0Sstevel@tonic-gate #define IPFRAGTTL 60 /* time to live for frags, slowhz */ 176*0Sstevel@tonic-gate #define IPTTLDEC 1 /* subtracted when forwarding */ 177*0Sstevel@tonic-gate 178*0Sstevel@tonic-gate #define IP_MSS 576 /* default maximum segment size */ 179*0Sstevel@tonic-gate 180*0Sstevel@tonic-gate #ifdef __cplusplus 181*0Sstevel@tonic-gate } 182*0Sstevel@tonic-gate #endif 183*0Sstevel@tonic-gate 184*0Sstevel@tonic-gate #endif /* _NETINET_IP_H */ 185