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Bug #3255 ยป ip.h

virtual dj, 2015-11-03 18:36

 
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/* Copyright (C) 1991,92,93,95,96,97,98,99,2000,2009 Free Software
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   Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, write to the Free
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   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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   02111-1307 USA.  */
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#ifndef __NETINET_IP_H
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#define __NETINET_IP_H 1
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#include <features.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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__BEGIN_DECLS
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struct timestamp
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  {
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    u_int8_t len;
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    u_int8_t ptr;
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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    unsigned int flags:4;
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    unsigned int overflow:4;
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#elif __BYTE_ORDER == __BIG_ENDIAN
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    unsigned int overflow:4;
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    unsigned int flags:4;
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#else
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# error	"Please fix <bits/endian.h>"
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#endif
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    u_int32_t data[9];
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  };
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struct iphdr
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  {
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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    unsigned int ihl:4;
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    unsigned int version:4;
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#elif __BYTE_ORDER == __BIG_ENDIAN
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    unsigned int version:4;
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    unsigned int ihl:4;
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#else
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# error	"Please fix <bits/endian.h>"
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#endif
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    u_int8_t tos;
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    u_int16_t tot_len;
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    u_int16_t id;
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    u_int16_t frag_off;
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    u_int8_t ttl;
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    u_int8_t protocol;
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    u_int16_t check;
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    u_int32_t saddr;
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    u_int32_t daddr;
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    /*The options start here. */
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  };
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#ifdef __USE_BSD
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/*
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 * Copyright (c) 1982, 1986, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 4. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 *	@(#)ip.h	8.1 (Berkeley) 6/10/93
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 */
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/*
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 * Definitions for internet protocol version 4.
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 * Per RFC 791, September 1981.
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 */
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/*
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 * Structure of an internet header, naked of options.
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 */
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struct ip
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  {
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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    unsigned int ip_hl:4;		/* header length */
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    unsigned int ip_v:4;		/* version */
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#endif
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#if __BYTE_ORDER == __BIG_ENDIAN
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    unsigned int ip_v:4;		/* version */
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    unsigned int ip_hl:4;		/* header length */
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#endif
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    u_int8_t ip_tos;			/* type of service */
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    u_short ip_len;			/* total length */
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    u_short ip_id;			/* identification */
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    u_short ip_off;			/* fragment offset field */
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#define	IP_RF 0x8000			/* reserved fragment flag */
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#define	IP_DF 0x4000			/* dont fragment flag */
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#define	IP_MF 0x2000			/* more fragments flag */
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#define	IP_OFFMASK 0x1fff		/* mask for fragmenting bits */
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    u_int8_t ip_ttl;			/* time to live */
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    u_int8_t ip_p;			/* protocol */
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    u_short ip_sum;			/* checksum */
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    struct in_addr ip_src, ip_dst;	/* source and dest address */
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  };
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/*
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 * Time stamp option structure.
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 */
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struct ip_timestamp
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  {
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    u_int8_t ipt_code;			/* IPOPT_TS */
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    u_int8_t ipt_len;			/* size of structure (variable) */
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    u_int8_t ipt_ptr;			/* index of current entry */
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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    unsigned int ipt_flg:4;		/* flags, see below */
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    unsigned int ipt_oflw:4;		/* overflow counter */
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#endif
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#if __BYTE_ORDER == __BIG_ENDIAN
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    unsigned int ipt_oflw:4;		/* overflow counter */
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    unsigned int ipt_flg:4;		/* flags, see below */
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#endif
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    u_int32_t data[9];
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  };
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#endif /* __USE_BSD */
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#define	IPVERSION	4               /* IP version number */
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#define	IP_MAXPACKET	65535		/* maximum packet size */
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/*
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 * Definitions for Explicit Congestion Notification (ECN)
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 *
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 * Taken from RFC-3168, Section 5.
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 */
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#define	IPTOS_ECN_MASK		0x03
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#define	IPTOS_ECN(x)		((x) & IPTOS_ECN_MASK)
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#define	IPTOS_ECN_NOT_ECT	0x00
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#define	IPTOS_ECN_ECT1		0x01
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#define	IPTOS_ECN_ECT0		0x02
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#define	IPTOS_ECN_CE		0x03
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/*
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 * Definitions for IP differentiated services code points (DSCP)
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 *
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 * Taken from RFC-2597, Section 6 and RFC-2598, Section 2.3.
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 */
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#define	IPTOS_DSCP_MASK		0xfc
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#define	IPTOS_DSCP(x)		((x) & IPTOS_DSCP_MASK)
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#define	IPTOS_DSCP_AF11		0x28
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#define	IPTOS_DSCP_AF12		0x30
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#define	IPTOS_DSCP_AF13		0x38
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#define	IPTOS_DSCP_AF21		0x48
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#define	IPTOS_DSCP_AF22		0x50
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#define	IPTOS_DSCP_AF23		0x58
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#define	IPTOS_DSCP_AF31		0x68
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#define	IPTOS_DSCP_AF32		0x70
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#define	IPTOS_DSCP_AF33		0x78
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#define	IPTOS_DSCP_AF41		0x88
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#define	IPTOS_DSCP_AF42		0x90
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#define	IPTOS_DSCP_AF43		0x98
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#define	IPTOS_DSCP_EF		0xb8
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/*
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 * Definitions for IP type of service (ip_tos)
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 */
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#define	IPTOS_TOS_MASK		0x1E
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#define	IPTOS_TOS(tos)		((tos) & IPTOS_TOS_MASK)
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#define	IPTOS_LOWDELAY		0x10
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#define	IPTOS_THROUGHPUT	0x08
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#define	IPTOS_RELIABILITY	0x04
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#define	IPTOS_LOWCOST		0x02
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#define	IPTOS_MINCOST		IPTOS_LOWCOST
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/*
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 * Definitions for IP precedence (also in ip_tos) (hopefully unused)
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 */
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#define	IPTOS_PREC_MASK			0xe0
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#define	IPTOS_PREC(tos)                ((tos) & IPTOS_PREC_MASK)
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#define	IPTOS_PREC_NETCONTROL		0xe0
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#define	IPTOS_PREC_INTERNETCONTROL	0xc0
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#define	IPTOS_PREC_CRITIC_ECP		0xa0
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#define	IPTOS_PREC_FLASHOVERRIDE	0x80
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#define	IPTOS_PREC_FLASH		0x60
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#define	IPTOS_PREC_IMMEDIATE		0x40
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#define	IPTOS_PREC_PRIORITY		0x20
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#define	IPTOS_PREC_ROUTINE		0x00
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/*
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 * Definitions for options.
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 */
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#define	IPOPT_COPY		0x80
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#define	IPOPT_CLASS_MASK	0x60
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#define	IPOPT_NUMBER_MASK	0x1f
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#define	IPOPT_COPIED(o)		((o) & IPOPT_COPY)
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#define	IPOPT_CLASS(o)		((o) & IPOPT_CLASS_MASK)
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#define	IPOPT_NUMBER(o)		((o) & IPOPT_NUMBER_MASK)
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#define	IPOPT_CONTROL		0x00
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#define	IPOPT_RESERVED1		0x20
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#define	IPOPT_DEBMEAS		0x40
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#define	IPOPT_MEASUREMENT       IPOPT_DEBMEAS
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#define	IPOPT_RESERVED2		0x60
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#define	IPOPT_EOL		0		/* end of option list */
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#define	IPOPT_END		IPOPT_EOL
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#define	IPOPT_NOP		1		/* no operation */
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#define	IPOPT_NOOP		IPOPT_NOP
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#define	IPOPT_RR		7		/* record packet route */
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#define	IPOPT_TS		68		/* timestamp */
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#define	IPOPT_TIMESTAMP		IPOPT_TS
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#define	IPOPT_SECURITY		130		/* provide s,c,h,tcc */
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#define	IPOPT_SEC		IPOPT_SECURITY
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#define	IPOPT_LSRR		131		/* loose source route */
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#define	IPOPT_SATID		136		/* satnet id */
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#define	IPOPT_SID		IPOPT_SATID
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#define	IPOPT_SSRR		137		/* strict source route */
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#define	IPOPT_RA		148		/* router alert */
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/*
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 * Offsets to fields in options other than EOL and NOP.
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 */
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#define	IPOPT_OPTVAL		0		/* option ID */
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#define	IPOPT_OLEN		1		/* option length */
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#define	IPOPT_OFFSET		2		/* offset within option */
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#define	IPOPT_MINOFF		4		/* min value of above */
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#define	MAX_IPOPTLEN		40
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/* flag bits for ipt_flg */
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#define	IPOPT_TS_TSONLY		0		/* timestamps only */
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#define	IPOPT_TS_TSANDADDR	1		/* timestamps and addresses */
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#define	IPOPT_TS_PRESPEC	3		/* specified modules only */
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/* bits for security (not byte swapped) */
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#define	IPOPT_SECUR_UNCLASS	0x0000
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#define	IPOPT_SECUR_CONFID	0xf135
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#define	IPOPT_SECUR_EFTO	0x789a
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#define	IPOPT_SECUR_MMMM	0xbc4d
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#define	IPOPT_SECUR_RESTR	0xaf13
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#define	IPOPT_SECUR_SECRET	0xd788
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#define	IPOPT_SECUR_TOPSECRET	0x6bc5
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/*
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 * Internet implementation parameters.
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 */
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#define	MAXTTL		255		/* maximum time to live (seconds) */
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#define	IPDEFTTL	64		/* default ttl, from RFC 1340 */
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#define	IPFRAGTTL	60		/* time to live for frags, slowhz */
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#define	IPTTLDEC	1		/* subtracted when forwarding */
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#define	IP_MSS		576		/* default maximum segment size */
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__END_DECLS
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#endif /* netinet/ip.h */
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