/* * Copyright 2005 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* * Copyright (c) 1982, 1986 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that this notice is preserved and that due credit is given * to the University of California at Berkeley. The name of the University * may not be used to endorse or promote products derived from this * software without specific prior written permission. This software * is provided ``as is'' without express or implied warranty. */ /* * Definitions for internet protocol version 4. * Per RFC 791, September 1981. */ #ifndef _NETINET_IP_H #define _NETINET_IP_H #pragma ident "%Z%%M% %I% %E% SMI" /* ip.h 1.13 88/08/19 SMI; from UCB 7.6.1.1 3/15/88 */ #include #ifdef __cplusplus extern "C" { #endif #define IPVERSION 4 /* * Structure of an internet header, naked of options. */ struct ip { #ifdef _BIT_FIELDS_LTOH uchar_t ip_hl:4, /* header length */ ip_v:4; /* version */ #else uchar_t ip_v:4, /* version */ ip_hl:4; /* header length */ #endif uchar_t ip_tos; /* type of service */ ushort_t ip_len; /* total length */ ushort_t ip_id; /* identification */ ushort_t ip_off; /* fragment offset field */ #define IP_DF 0x4000 /* dont fragment flag */ #define IP_MF 0x2000 /* more fragments flag */ uchar_t ip_ttl; /* time to live */ uchar_t ip_p; /* protocol */ ushort_t ip_sum; /* checksum */ struct in_addr ip_src, ip_dst; /* source and dest address */ }; #define IP_MAXPACKET 65535 /* maximum packet size */ /* * Definitions for IP type of service (ip_tos) */ #define IPTOS_LOWDELAY 0x10 #define IPTOS_THROUGHPUT 0x08 #define IPTOS_RELIABILITY 0x04 #define IPTOS_ECT 0x02 /* ECN-Capable Transport flag */ #define IPTOS_CE 0x01 /* ECN-Congestion Experienced flag */ /* * Definitions for IP precedence (also in ip_tos) (hopefully unused) */ #define IPTOS_PREC_NETCONTROL 0xe0 #define IPTOS_PREC_INTERNETCONTROL 0xc0 #define IPTOS_PREC_CRITIC_ECP 0xa0 #define IPTOS_PREC_FLASHOVERRIDE 0x80 #define IPTOS_PREC_FLASH 0x60 #define IPTOS_PREC_IMMEDIATE 0x40 #define IPTOS_PREC_PRIORITY 0x20 #define IPTOS_PREC_ROUTINE 0x00 /* * Definitions for options. */ /* Bits in the option value */ #define IPOPT_COPY 0x80 #define IPOPT_COPIED(o) ((o)&0x80) #define IPOPT_CLASS(o) ((o)&0x60) #define IPOPT_NUMBER(o) ((o)&0x1f) #define IPOPT_CONTROL 0x00 #define IPOPT_RESERVED1 0x20 #define IPOPT_DEBMEAS 0x40 #define IPOPT_RESERVED2 0x60 #define IPOPT_EOL 0x00 /* end of option list */ #define IPOPT_NOP 0x01 /* no operation */ #define IPOPT_RR 0x07 /* record packet route */ #define IPOPT_RTRALERT 0x14 /* router alert */ #define IPOPT_TS 0x44 /* timestamp */ #define IPOPT_SECURITY 0x82 /* provide s,c,h,tcc */ #define IPOPT_LSRR 0x83 /* loose source route */ #define IPOPT_EXTSEC 0x85 #define IPOPT_COMSEC 0x86 #define IPOPT_SATID 0x88 /* satnet id */ #define IPOPT_SSRR 0x89 /* strict source route */ #define IPOPT_RA 0x94 #define IPOPT_SDMDD 0x95 /* * Offsets to fields in options other than EOL and NOP. */ #define IPOPT_OPTVAL 0 /* option ID */ #define IPOPT_OLEN 1 /* option length */ #define IPOPT_OFFSET 2 /* offset within option */ #define IPOPT_POS_OV_FLG 3 #define IPOPT_MINOFF 4 /* min value of IPOPT_OFFSET */ /* Minimum for src and record route options */ #define IPOPT_MINOFF_SR IPOPT_MINOFF /* * Time stamp option structure. */ struct ip_timestamp { uchar_t ipt_code; /* IPOPT_TS */ uchar_t ipt_len; /* size of structure (variable) */ uchar_t ipt_ptr; /* index of current entry */ #ifdef _BIT_FIELDS_LTOH uchar_t ipt_flg:4, /* flags, see below */ ipt_oflw:4; /* overflow counter */ #else uchar_t ipt_oflw:4, /* overflow counter */ ipt_flg:4; /* flags, see below */ #endif union ipt_timestamp { uint32_t ipt_time[1]; struct ipt_ta { struct in_addr ipt_addr; uint32_t ipt_time; } ipt_ta[1]; } ipt_timestamp; }; /* flag bits for ipt_flg */ #define IPOPT_TS_TSONLY 0 /* timestamps only */ #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */ #define IPOPT_TS_PRESPEC 2 /* specified modules only */ #define IPOPT_TS_PRESPEC_RFC791 3 /* Minimum for timestamp option */ #define IPOPT_MINOFF_IT 5 #define IPOPT_MINLEN_IT 5 #define IPOPT_TS_TIMELEN 4 /* Timestamp size */ /* bits for security (not byte swapped) */ #define IPOPT_SECUR_UNCLASS 0x0000 #define IPOPT_SECUR_CONFID 0xf135 #define IPOPT_SECUR_EFTO 0x789a #define IPOPT_SECUR_MMMM 0xbc4d #define IPOPT_SECUR_RESTR 0xaf13 #define IPOPT_SECUR_SECRET 0xd788 #define IPOPT_SECUR_TOPSECRET 0x6bc5 /* * Internet implementation parameters. */ #define MAXTTL 255 /* maximum time to live (seconds) */ #define IPFRAGTTL 60 /* time to live for frags, slowhz */ #define IPTTLDEC 1 /* subtracted when forwarding */ #define IP_MSS 576 /* default maximum segment size */ #ifdef __cplusplus } #endif #endif /* _NETINET_IP_H */