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/*
* 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 <sys/isa_defs.h>
#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 */
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