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Edit File : ip.h \| Size : 9.21 KB
/* Copyright (C) 1991-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. / #ifndef __NETINET_IP_H #define __NETINET_IP_H 1 #include <features.h> #include <sys/types.h> #include <netinet/in.h> __BEGIN_DECLS struct timestamp { uint8_t len; uint8_t ptr; #if __BYTE_ORDER == __LITTLE_ENDIAN unsigned int flags:4; unsigned int overflow:4; #elif __BYTE_ORDER == __BIG_ENDIAN unsigned int overflow:4; unsigned int flags:4; #else # error "Please fix <bits/endian.h>" #endif uint32_t data[9]; }; struct iphdr { #if __BYTE_ORDER == __LITTLE_ENDIAN unsigned int ihl:4; unsigned int version:4; #elif __BYTE_ORDER == __BIG_ENDIAN unsigned int version:4; unsigned int ihl:4; #else # error "Please fix <bits/endian.h>" #endif uint8_t tos; uint16_t tot_len; uint16_t id; uint16_t frag_off; uint8_t ttl; uint8_t protocol; uint16_t check; uint32_t saddr; uint32_t daddr; /The options start here. / }; #ifdef __USE_MISC / * Copyright (c) 1982, 1986, 1993 * The 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. * 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 8.1 (Berkeley) 6/10/93 / / * Definitions for internet protocol version 4. * Per RFC 791, September 1981. / / * Structure of an internet header, naked of options. / struct ip { #if __BYTE_ORDER == __LITTLE_ENDIAN unsigned int ip_hl:4; / header length / unsigned int ip_v:4; / version / #endif #if __BYTE_ORDER == __BIG_ENDIAN unsigned int ip_v:4; / version / unsigned int ip_hl:4; / header length / #endif uint8_t ip_tos; / type of service / unsigned short ip_len; / total length / unsigned short ip_id; / identification / unsigned short ip_off; / fragment offset field / #define IP_RF 0x8000 / reserved fragment flag / #define IP_DF 0x4000 / dont fragment flag / #define IP_MF 0x2000 / more fragments flag / #define IP_OFFMASK 0x1fff / mask for fragmenting bits / uint8_t ip_ttl; / time to live / uint8_t ip_p; / protocol / unsigned short ip_sum; / checksum / struct in_addr ip_src, ip_dst; / source and dest address / }; / * Time stamp option structure. / struct ip_timestamp { uint8_t ipt_code; / IPOPT_TS / uint8_t ipt_len; / size of structure (variable) / uint8_t ipt_ptr; / index of current entry / #if __BYTE_ORDER == __LITTLE_ENDIAN unsigned int ipt_flg:4; / flags, see below / unsigned int ipt_oflw:4; / overflow counter / #endif #if __BYTE_ORDER == __BIG_ENDIAN unsigned int ipt_oflw:4; / overflow counter / unsigned int ipt_flg:4; / flags, see below / #endif uint32_t data[9]; }; #endif / __USE_MISC / #define IPVERSION 4 / IP version number / #define IP_MAXPACKET 65535 / maximum packet size / / * Definitions for Explicit Congestion Notification (ECN) * * Taken from RFC-3168, Section 5. / #define IPTOS_ECN_MASK 0x03 #define IPTOS_ECN(x) ((x) & IPTOS_ECN_MASK) #define IPTOS_ECN_NOT_ECT 0x00 #define IPTOS_ECN_ECT1 0x01 #define IPTOS_ECN_ECT0 0x02 #define IPTOS_ECN_CE 0x03 / * Definitions for IP differentiated services code points (DSCP) * * Taken from RFC-2597, Section 6 and RFC-2598, Section 2.3. / #define IPTOS_DSCP_MASK 0xfc #define IPTOS_DSCP(x) ((x) & IPTOS_DSCP_MASK) #define IPTOS_DSCP_AF11 0x28 #define IPTOS_DSCP_AF12 0x30 #define IPTOS_DSCP_AF13 0x38 #define IPTOS_DSCP_AF21 0x48 #define IPTOS_DSCP_AF22 0x50 #define IPTOS_DSCP_AF23 0x58 #define IPTOS_DSCP_AF31 0x68 #define IPTOS_DSCP_AF32 0x70 #define IPTOS_DSCP_AF33 0x78 #define IPTOS_DSCP_AF41 0x88 #define IPTOS_DSCP_AF42 0x90 #define IPTOS_DSCP_AF43 0x98 #define IPTOS_DSCP_EF 0xb8 / * In RFC 2474, Section 4.2.2.1, the Class Selector Codepoints subsume * the old ToS Precedence values. / #define IPTOS_CLASS_MASK 0xe0 #define IPTOS_CLASS(class) ((class) & IPTOS_CLASS_MASK) #define IPTOS_CLASS_CS0 0x00 #define IPTOS_CLASS_CS1 0x20 #define IPTOS_CLASS_CS2 0x40 #define IPTOS_CLASS_CS3 0x60 #define IPTOS_CLASS_CS4 0x80 #define IPTOS_CLASS_CS5 0xa0 #define IPTOS_CLASS_CS6 0xc0 #define IPTOS_CLASS_CS7 0xe0 #define IPTOS_CLASS_DEFAULT IPTOS_CLASS_CS0 / * Definitions for IP type of service (ip_tos) [deprecated; use DSCP * and CS definitions above instead.] / #define IPTOS_TOS_MASK 0x1E #define IPTOS_TOS(tos) ((tos) & IPTOS_TOS_MASK) #define IPTOS_LOWDELAY 0x10 #define IPTOS_THROUGHPUT 0x08 #define IPTOS_RELIABILITY 0x04 #define IPTOS_LOWCOST 0x02 #define IPTOS_MINCOST IPTOS_LOWCOST / * Definitions for IP precedence (also in ip_tos) [also deprecated.] / #define IPTOS_PREC_MASK IPTOS_CLASS_MASK #define IPTOS_PREC(tos) IPTOS_CLASS(tos) #define IPTOS_PREC_NETCONTROL IPTOS_CLASS_CS7 #define IPTOS_PREC_INTERNETCONTROL IPTOS_CLASS_CS6 #define IPTOS_PREC_CRITIC_ECP IPTOS_CLASS_CS5 #define IPTOS_PREC_FLASHOVERRIDE IPTOS_CLASS_CS4 #define IPTOS_PREC_FLASH IPTOS_CLASS_CS3 #define IPTOS_PREC_IMMEDIATE IPTOS_CLASS_CS2 #define IPTOS_PREC_PRIORITY IPTOS_CLASS_CS1 #define IPTOS_PREC_ROUTINE IPTOS_CLASS_CS0 / * Definitions for options. / #define IPOPT_COPY 0x80 #define IPOPT_CLASS_MASK 0x60 #define IPOPT_NUMBER_MASK 0x1f #define IPOPT_COPIED(o) ((o) & IPOPT_COPY) #define IPOPT_CLASS(o) ((o) & IPOPT_CLASS_MASK) #define IPOPT_NUMBER(o) ((o) & IPOPT_NUMBER_MASK) #define IPOPT_CONTROL 0x00 #define IPOPT_RESERVED1 0x20 #define IPOPT_DEBMEAS 0x40 #define IPOPT_MEASUREMENT IPOPT_DEBMEAS #define IPOPT_RESERVED2 0x60 #define IPOPT_EOL 0 / end of option list / #define IPOPT_END IPOPT_EOL #define IPOPT_NOP 1 / no operation / #define IPOPT_NOOP IPOPT_NOP #define IPOPT_RR 7 / record packet route / #define IPOPT_TS 68 / timestamp / #define IPOPT_TIMESTAMP IPOPT_TS #define IPOPT_SECURITY 130 / provide s,c,h,tcc / #define IPOPT_SEC IPOPT_SECURITY #define IPOPT_LSRR 131 / loose source route / #define IPOPT_SATID 136 / satnet id / #define IPOPT_SID IPOPT_SATID #define IPOPT_SSRR 137 / strict source route / #define IPOPT_RA 148 / router alert / / * 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 / #define MAX_IPOPTLEN 40 / 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 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 IPDEFTTL 64 / default ttl, from RFC 1340 / #define IPFRAGTTL 60 / time to live for frags, slowhz / #define IPTTLDEC 1 / subtracted when forwarding / #define IP_MSS 576 / default maximum segment size / __END_DECLS #endif / netinet/ip.h */ Back

Edit File : ip.h | Size : 9.21 KB

/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#ifndef __NETINET_IP_H
#define __NETINET_IP_H 1

#include <features.h>
#include <sys/types.h>

#include <netinet/in.h>

__BEGIN_DECLS

struct timestamp
  {
    uint8_t len;
    uint8_t ptr;
#if __BYTE_ORDER == __LITTLE_ENDIAN
    unsigned int flags:4;
    unsigned int overflow:4;
#elif __BYTE_ORDER == __BIG_ENDIAN
    unsigned int overflow:4;
    unsigned int flags:4;
#else
# error	"Please fix <bits/endian.h>"
#endif
    uint32_t data[9];
  };

struct iphdr
  {
#if __BYTE_ORDER == __LITTLE_ENDIAN
    unsigned int ihl:4;
    unsigned int version:4;
#elif __BYTE_ORDER == __BIG_ENDIAN
    unsigned int version:4;
    unsigned int ihl:4;
#else
# error	"Please fix <bits/endian.h>"
#endif
    uint8_t tos;
    uint16_t tot_len;
    uint16_t id;
    uint16_t frag_off;
    uint8_t ttl;
    uint8_t protocol;
    uint16_t check;
    uint32_t saddr;
    uint32_t daddr;
    /*The options start here. */
  };

#ifdef __USE_MISC
/*
 * Copyright (c) 1982, 1986, 1993
 *	The 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.
 * 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	8.1 (Berkeley) 6/10/93
 */

/*
 * Definitions for internet protocol version 4.
 * Per RFC 791, September 1981.
 */

/*
 * Structure of an internet header, naked of options.
 */
struct ip
  {
#if __BYTE_ORDER == __LITTLE_ENDIAN
    unsigned int ip_hl:4;		/* header length */
    unsigned int ip_v:4;		/* version */
#endif
#if __BYTE_ORDER == __BIG_ENDIAN
    unsigned int ip_v:4;		/* version */
    unsigned int ip_hl:4;		/* header length */
#endif
    uint8_t ip_tos;			/* type of service */
    unsigned short ip_len;		/* total length */
    unsigned short ip_id;		/* identification */
    unsigned short ip_off;		/* fragment offset field */
#define	IP_RF 0x8000			/* reserved fragment flag */
#define	IP_DF 0x4000			/* dont fragment flag */
#define	IP_MF 0x2000			/* more fragments flag */
#define	IP_OFFMASK 0x1fff		/* mask for fragmenting bits */
    uint8_t ip_ttl;			/* time to live */
    uint8_t ip_p;			/* protocol */
    unsigned short ip_sum;		/* checksum */
    struct in_addr ip_src, ip_dst;	/* source and dest address */
  };

/*
 * Time stamp option structure.
 */
struct ip_timestamp
  {
    uint8_t ipt_code;			/* IPOPT_TS */
    uint8_t ipt_len;			/* size of structure (variable) */
    uint8_t ipt_ptr;			/* index of current entry */
#if __BYTE_ORDER == __LITTLE_ENDIAN
    unsigned int ipt_flg:4;		/* flags, see below */
    unsigned int ipt_oflw:4;		/* overflow counter */
#endif
#if __BYTE_ORDER == __BIG_ENDIAN
    unsigned int ipt_oflw:4;		/* overflow counter */
    unsigned int ipt_flg:4;		/* flags, see below */
#endif
    uint32_t data[9];
  };
#endif /* __USE_MISC */

#define	IPVERSION	4               /* IP version number */
#define	IP_MAXPACKET	65535		/* maximum packet size */

/*
 * Definitions for Explicit Congestion Notification (ECN)
 *
 * Taken from RFC-3168, Section 5.
 */

#define	IPTOS_ECN_MASK		0x03
#define	IPTOS_ECN(x)		((x) & IPTOS_ECN_MASK)
#define	IPTOS_ECN_NOT_ECT	0x00
#define	IPTOS_ECN_ECT1		0x01
#define	IPTOS_ECN_ECT0		0x02
#define	IPTOS_ECN_CE		0x03

/*
 * Definitions for IP differentiated services code points (DSCP)
 *
 * Taken from RFC-2597, Section 6 and RFC-2598, Section 2.3.
 */

#define	IPTOS_DSCP_MASK		0xfc
#define	IPTOS_DSCP(x)		((x) & IPTOS_DSCP_MASK)
#define	IPTOS_DSCP_AF11		0x28
#define	IPTOS_DSCP_AF12		0x30
#define	IPTOS_DSCP_AF13		0x38
#define	IPTOS_DSCP_AF21		0x48
#define	IPTOS_DSCP_AF22		0x50
#define	IPTOS_DSCP_AF23		0x58
#define	IPTOS_DSCP_AF31		0x68
#define	IPTOS_DSCP_AF32		0x70
#define	IPTOS_DSCP_AF33		0x78
#define	IPTOS_DSCP_AF41		0x88
#define	IPTOS_DSCP_AF42		0x90
#define	IPTOS_DSCP_AF43		0x98
#define	IPTOS_DSCP_EF		0xb8

/*
 * In RFC 2474, Section 4.2.2.1, the Class Selector Codepoints subsume
 * the old ToS Precedence values.
 */

#define	IPTOS_CLASS_MASK		0xe0
#define	IPTOS_CLASS(class)		((class) & IPTOS_CLASS_MASK)
#define	IPTOS_CLASS_CS0			0x00
#define	IPTOS_CLASS_CS1			0x20
#define	IPTOS_CLASS_CS2			0x40
#define	IPTOS_CLASS_CS3			0x60
#define	IPTOS_CLASS_CS4			0x80
#define	IPTOS_CLASS_CS5			0xa0
#define	IPTOS_CLASS_CS6			0xc0
#define	IPTOS_CLASS_CS7			0xe0

#define	IPTOS_CLASS_DEFAULT		IPTOS_CLASS_CS0

/*
 * Definitions for IP type of service (ip_tos) [deprecated; use DSCP
 * and CS definitions above instead.]
 */
#define	IPTOS_TOS_MASK		0x1E
#define	IPTOS_TOS(tos)		((tos) & IPTOS_TOS_MASK)
#define	IPTOS_LOWDELAY		0x10
#define	IPTOS_THROUGHPUT	0x08
#define	IPTOS_RELIABILITY	0x04
#define	IPTOS_LOWCOST		0x02
#define	IPTOS_MINCOST		IPTOS_LOWCOST

/*
 * Definitions for IP precedence (also in ip_tos) [also deprecated.]
 */
#define	IPTOS_PREC_MASK			IPTOS_CLASS_MASK
#define	IPTOS_PREC(tos)			IPTOS_CLASS(tos)
#define	IPTOS_PREC_NETCONTROL		IPTOS_CLASS_CS7
#define	IPTOS_PREC_INTERNETCONTROL	IPTOS_CLASS_CS6
#define	IPTOS_PREC_CRITIC_ECP		IPTOS_CLASS_CS5
#define	IPTOS_PREC_FLASHOVERRIDE	IPTOS_CLASS_CS4
#define	IPTOS_PREC_FLASH		IPTOS_CLASS_CS3
#define	IPTOS_PREC_IMMEDIATE		IPTOS_CLASS_CS2
#define	IPTOS_PREC_PRIORITY		IPTOS_CLASS_CS1
#define	IPTOS_PREC_ROUTINE		IPTOS_CLASS_CS0

/*
 * Definitions for options.
 */
#define	IPOPT_COPY		0x80
#define	IPOPT_CLASS_MASK	0x60
#define	IPOPT_NUMBER_MASK	0x1f

#define	IPOPT_COPIED(o)		((o) & IPOPT_COPY)
#define	IPOPT_CLASS(o)		((o) & IPOPT_CLASS_MASK)
#define	IPOPT_NUMBER(o)		((o) & IPOPT_NUMBER_MASK)

#define	IPOPT_CONTROL		0x00
#define	IPOPT_RESERVED1		0x20
#define	IPOPT_DEBMEAS		0x40
#define	IPOPT_MEASUREMENT       IPOPT_DEBMEAS
#define	IPOPT_RESERVED2		0x60

#define	IPOPT_EOL		0		/* end of option list */
#define	IPOPT_END		IPOPT_EOL
#define	IPOPT_NOP		1		/* no operation */
#define	IPOPT_NOOP		IPOPT_NOP

#define	IPOPT_RR		7		/* record packet route */
#define	IPOPT_TS		68		/* timestamp */
#define	IPOPT_TIMESTAMP		IPOPT_TS
#define	IPOPT_SECURITY		130		/* provide s,c,h,tcc */
#define	IPOPT_SEC		IPOPT_SECURITY
#define	IPOPT_LSRR		131		/* loose source route */
#define	IPOPT_SATID		136		/* satnet id */
#define	IPOPT_SID		IPOPT_SATID
#define	IPOPT_SSRR		137		/* strict source route */
#define	IPOPT_RA		148		/* router alert */

/*
 * 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 */

#define	MAX_IPOPTLEN		40

/* 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	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	IPDEFTTL	64		/* default ttl, from RFC 1340 */
#define	IPFRAGTTL	60		/* time to live for frags, slowhz */
#define	IPTTLDEC	1		/* subtracted when forwarding */

#define	IP_MSS		576		/* default maximum segment size */

__END_DECLS

#endif /* netinet/ip.h */

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