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- /*
- * $Id: ip.h,v 1.4 1993/06/30 05:45:25 jraja Exp $
- *
- * HISTORY
- * $Log: ip.h,v $
- * Revision 1.4 1993/06/30 05:45:25 jraja
- * Changed bitfield definitions to be more like ANSI-C.
- *
- * Revision 1.3 1993/03/05 03:20:01 ppessi
- * Compiles with SASC. Initial test version.
- *
- * Revision 1.2 93/03/03 21:39:09 21:39:09 jraja (Jarno Tapio Rajahalme)
- * Added #ifdef to prevent multiple inclusion.
- *
- * Revision 1.1 92/11/17 16:29:25 16:29:25 jraja (Jarno Tapio Rajahalme)
- * Initial revision
- *
- *
- */
-
- /*
- * Copyright (c) 1982, 1986 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)ip.h 7.10 (Berkeley) 6/28/90
- */
-
- /*
- * Definitions for internet protocol version 4.
- * Per RFC 791, September 1981.
- */
- //MODULE 'netinet/in'
-
- #define IPVERSION 4
-
- /*
- * Structure of an internet header, naked of options.
- *
- * We declare ip_len and ip_off to be short, rather than u_short
- * pragmatically since otherwise unsigned comparisons can result
- * against negative integers quite easily, and fail in subtle ways.
- */
-
- #define IP_DF $4000 /* dont fragment flag */
- #define IP_MF $2000 /* more fragments flag */
-
- OBJECT ip
- ip_v:UBYTE, /* version */
- ip_hl:UBYTE, /* header length */
- ip_tos:UBYTE, /* type of service */
- ip_len:WORD, /* total length */
- ip_id:UWORD, /* identification */
- ip_off:WORD, /* fragment offset field */
- ip_ttl:UBYTE, /* time to live */
- ip_p:UBYTE, /* protocol */
- ip_sum:UWORD, /* checksum */
- ip_src:in_addr,
- ip_dst:in_addr /* source and dest address */
-
-
-
- #define IP_MAXPACKET 65535 /* maximum packet size */
-
- /*
- * Definitions for IP type of service (ip_tos)
- */
- #define IPTOS_LOWDELAY $10
- #define IPTOS_THROUGHPUT $08
- #define IPTOS_RELIABILITY $04
-
- /*
- * Definitions for IP precedence (also in ip_tos) (hopefully unused)
- */
- #define IPTOS_PREC_NETCONTROL $e0
- #define IPTOS_PREC_INTERNETCONTROL $c0
- #define IPTOS_PREC_CRITIC_ECP $a0
- #define IPTOS_PREC_FLASHOVERRIDE $80
- #define IPTOS_PREC_FLASH $60
- #define IPTOS_PREC_IMMEDIATE $40
- #define IPTOS_PREC_PRIORITY $20
- #define IPTOS_PREC_ROUTINE $10
-
- /*
- * Definitions for options.
- */
- #define IPOPT_COPIED(o) ((o) & $80)
- #define IPOPT_CLASS(o) ((o) & $60)
- #define IPOPT_NUMBER(o) ((o) & $1f)
-
- #define IPOPT_CONTROL $00
- #define IPOPT_RESERVED1 $20
- #define IPOPT_DEBMEAS $40
- #define IPOPT_RESERVED2 $60
-
- #define IPOPT_EOL 0 /* end of option list */
- #define IPOPT_NOP 1 /* no operation */
-
- #define IPOPT_RR 7 /* record packet route */
- #define IPOPT_TS 68 /* timestamp */
- #define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
- #define IPOPT_LSRR 131 /* loose source route */
- #define IPOPT_SATID 136 /* satnet id */
- #define IPOPT_SSRR 137 /* strict source route */
-
- /*
- * 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_MINOFF 4 /* min value of above */
-
- /*
- * Time stamp option structure.
- */
- OBJECT ip_timestamp
- ipt_code:UBYTE, /* IPOPT_TS */
- ipt_len:UBYTE, /* size of structure (variable) */
- ipt_ptr:UBYTE, /* index of current entry */
- ipt_oflw:UBYTE, /* overflow counter */
- ipt_flg:UBYTE, /* flags, see below */
- [CUNION
- ipt_time[1]:ULONG,
- ipt_ta:ipt_ta_x
- ENDUNION]:ipt_timestamp
-
- OBJECT ipt_ta_x
- ipt_addr:in_addr,
- ipt_time:ULONG
-
- /* flag bits for ipt_flg */
- #define IPOPT_TS_TSONLY 0 /* timestamps only */
- #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
- #define IPOPT_TS_PRESPEC 3 /* specified modules only */
-
- /* bits for security (not byte swapped) */
- #define IPOPT_SECUR_UNCLASS $0000
- #define IPOPT_SECUR_CONFID $f135
- #define IPOPT_SECUR_EFTO $789a
- #define IPOPT_SECUR_MMMM $bc4d
- #define IPOPT_SECUR_RESTR $af13
- #define IPOPT_SECUR_SECRET $d788
- #define IPOPT_SECUR_TOPSECRET $6bc5
-
- /*
- * 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 */
-
-
-