in.h

vxworks 6.x 的全部头文件

/* in.h - internet header file */

/*
 * Copyright (c) 1984-2005 Wind River Systems, Inc.
 *
 * The right to copy, distribute or otherwise make use of this software
 * may be licensed only pursuant to the terms of an applicable Wind River
 * license agreement. No license to Wind River intellectual property rights
 * is granted herein. All rights not licensed by Wind River are reserved
 * by Wind River.
 */

/*
 * Copyright (c) 2002 INRIA. All rights reserved.
 *
 * Implementation of Internet Group Management Protocol, Version 3.
 * Developed by Hitoshi Asaeda, INRIA, February 2002.
 *
 * 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. Neither the name of INRIA 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 INSTITUTE 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 INSTITUTE 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.
 */

/*
 * Copyright (c) 1982, 1986, 1990, 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.
 * 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.
 *
 *	@(#)in.h	8.3 (Berkeley) 1/3/94
 * $FreeBSD: src/sys/netinet/in.h,v 1.48.2.12 2004/06/16 06:57:49 ru Exp $
 * $FreeBSD: src/sys/netinet/in.h,v 1.48.2.11 2003/09/09 19:09:22 bms Exp $
 */

/*
modification history
--------------------
02d,25aug05,dlk  Add section tags.
02c,18may05,kch  Merged from FreeBSD v 1.48.2.12.
02b,19apr05,rp   merged from comp_wn_ipv6_mld_interim-dev
02a,18apr05,vvv  included in6.h for user-space
01z,03mar05,vvv  removed reference to _KERNEL
01y,25feb05,niq  merge from niqbal.tor3.mroute for IP router alert changes
01x,17feb05,dlk  NTOHL() etc. only usable as statements, not expressions.
01w,07feb05,vvv  _KERNEL cleanup
01v,24jan05,vvv  osdep.h cleanup
01u,20jan05,sar  Removal of divert, dummynet and fw code.
01t,14oct04,nee  include osdep.h and machdep.h when _KERNEL is defined
                 (SPR #102593)
01s,31may04,nee  Adding macro IN_ADDR_IS_LINKLOCAL
01r,25nov03,ppp  added a comment before the inclusion of in6.h
01q,21nov03,ppp  rtp work
01p,04nov03,rlm  Ran batch header path update for header re-org.
01o,03nov03,rlm  Removed wrn/coreip/ prefix from #includes for header re-org.
01n,23oct03,rlm  updated #includes for header re-org
01m,07aug03,niq  Merging from Accordion label ACCORDION_BASE6_MERGE_BASELINE
01l,13jun03,syy  Added declaration for inet_ntoa_b() (SPR#88384)
01k,15may03,vvv  included mbuf.h
01j,09may03,vvv  included vxWorks.h
01i,01feb03,pas  merge from FreeBSD 4.7 - moved satosin() etc here
01h,09sep02,hsh  add c++ protection
01g,15jul02,ann  moved the early declaration of some structures to avoid
                 compilation warnings
01f,08feb02,nee  making in_socktrim non static
01e,02oct01,ppp  Removing the INET6 guard fot in6.h
01d,18sep01,qli  fixed a header inclusion error
01c,18sep01,ppp  guarding the inclusion of in6.h by INET6 for the link
                 temporarily
01b,23aug01,ppp  Adding the WindRiver copyright
01a,08aug01,ppp  Created from FreeBSD 4.3
*/

#ifndef _NETINET_IN_H_
#define _NETINET_IN_H_
 
#include <vxWorks.h>

#ifdef _WRS_KERNEL
#include <net/mbuf.h>
#endif

#ifdef __cplusplus
extern "C" {
#endif

#include <sys/socket.h>
    
/*
 * Constants and structures defined by the internet system,
 * Per RFC 790, September 1981, and numerous additions.
 */

/*
 * Protocols (RFC 1700)
 */
#define	IPPROTO_IP		0		/* dummy for IP */
#define	IPPROTO_HOPOPTS		0		/* IP6 hop-by-hop options */
#define	IPPROTO_ICMP		1		/* control message protocol */
#define	IPPROTO_IGMP		2		/* group mgmt protocol */
#define	IPPROTO_GGP		3		/* gateway^2 (deprecated) */
#define IPPROTO_IPV4		4 		/* IPv4 encapsulation */
#define IPPROTO_IPIP		IPPROTO_IPV4	/* for compatibility */
#define	IPPROTO_TCP		6		/* tcp */
#define	IPPROTO_ST		7		/* Stream protocol II */
#define	IPPROTO_EGP		8		/* exterior gateway protocol */
#define	IPPROTO_PIGP		9		/* private interior gateway */
#define	IPPROTO_RCCMON		10		/* BBN RCC Monitoring */
#define	IPPROTO_NVPII		11		/* network voice protocol*/
#define	IPPROTO_PUP		12		/* pup */
#define	IPPROTO_ARGUS		13		/* Argus */
#define	IPPROTO_EMCON		14		/* EMCON */
#define	IPPROTO_XNET		15		/* Cross Net Debugger */
#define	IPPROTO_CHAOS		16		/* Chaos*/
#define	IPPROTO_UDP		17		/* user datagram protocol */
#define	IPPROTO_MUX		18		/* Multiplexing */
#define	IPPROTO_MEAS		19		/* DCN Measurement Subsystems */
#define	IPPROTO_HMP		20		/* Host Monitoring */
#define	IPPROTO_PRM		21		/* Packet Radio Measurement */
#define	IPPROTO_IDP		22		/* xns idp */
#define	IPPROTO_TRUNK1		23		/* Trunk-1 */
#define	IPPROTO_TRUNK2		24		/* Trunk-2 */
#define	IPPROTO_LEAF1		25		/* Leaf-1 */
#define	IPPROTO_LEAF2		26		/* Leaf-2 */
#define	IPPROTO_RDP		27		/* Reliable Data */
#define	IPPROTO_IRTP		28		/* Reliable Transaction */
#define	IPPROTO_TP		29 		/* tp-4 w/ class negotiation */
#define	IPPROTO_BLT		30		/* Bulk Data Transfer */
#define	IPPROTO_NSP		31		/* Network Services */
#define	IPPROTO_INP		32		/* Merit Internodal */
#define	IPPROTO_SEP		33		/* Sequential Exchange */
#define	IPPROTO_3PC		34		/* Third Party Connect */
#define	IPPROTO_IDPR		35		/* InterDomain Policy Routing */
#define	IPPROTO_XTP		36		/* XTP */
#define	IPPROTO_DDP		37		/* Datagram Delivery */
#define	IPPROTO_CMTP		38		/* Control Message Transport */
#define	IPPROTO_TPXX		39		/* TP++ Transport */
#define	IPPROTO_IL		40		/* IL transport protocol */
#define	IPPROTO_IPV6		41		/* IP6 header */
#define	IPPROTO_SDRP		42		/* Source Demand Routing */
#define	IPPROTO_ROUTING		43		/* IP6 routing header */
#define	IPPROTO_FRAGMENT	44		/* IP6 fragmentation header */
#define	IPPROTO_IDRP		45		/* InterDomain Routing*/
#define	IPPROTO_RSVP		46 		/* resource reservation */
#define	IPPROTO_GRE		47		/* General Routing Encap. */
#define	IPPROTO_MHRP		48		/* Mobile Host Routing */
#define	IPPROTO_BHA		49		/* BHA */
#define	IPPROTO_ESP		50		/* IP6 Encap Sec. Payload */
#define	IPPROTO_AH		51		/* IP6 Auth Header */
#define	IPPROTO_INLSP		52		/* Integ. Net Layer Security */
#define	IPPROTO_SWIPE		53		/* IP with encryption */
#define	IPPROTO_NHRP		54		/* Next Hop Resolution */
#define	IPPROTO_MOBILE		55		/* IP Mobility */
/* 56-57: Unassigned */
#define	IPPROTO_ICMPV6		58		/* ICMP6 */
#define	IPPROTO_NONE		59		/* IP6 no next header */
#define	IPPROTO_DSTOPTS		60		/* IP6 destination option */
#define	IPPROTO_AHIP		61		/* any host internal protocol */
#define	IPPROTO_CFTP		62		/* CFTP */
#define	IPPROTO_HELLO		63		/* "hello" routing protocol */
#define	IPPROTO_SATEXPAK	64		/* SATNET/Backroom EXPAK */
#define	IPPROTO_KRYPTOLAN	65		/* Kryptolan */
#define	IPPROTO_RVD		66		/* Remote Virtual Disk */
#define	IPPROTO_IPPC		67		/* Pluribus Packet Core */
#define	IPPROTO_ADFS		68		/* Any distributed FS */
#define	IPPROTO_SATMON		69		/* Satnet Monitoring */
#define	IPPROTO_VISA		70		/* VISA Protocol */
#define	IPPROTO_IPCV		71		/* Packet Core Utility */
#define	IPPROTO_CPNX		72		/* Comp. Prot. Net. Executive */
#define	IPPROTO_CPHB		73		/* Comp. Prot. HeartBeat */
#define	IPPROTO_WSN		74		/* Wang Span Network */
#define	IPPROTO_PVP		75		/* Packet Video Protocol */
#define	IPPROTO_BRSATMON	76		/* BackRoom SATNET Monitoring */
#define	IPPROTO_ND		77		/* Sun net disk proto (temp.) */
#define	IPPROTO_WBMON		78		/* WIDEBAND Monitoring */
#define	IPPROTO_WBEXPAK		79		/* WIDEBAND EXPAK */
#define	IPPROTO_EON		80		/* ISO cnlp */
#define	IPPROTO_VMTP		81		/* VMTP */
#define	IPPROTO_SVMTP		82		/* Secure VMTP */
#define	IPPROTO_VINES		83		/* Banyon VINES */
#define	IPPROTO_TTP		84		/* TTP */
#define	IPPROTO_IGP		85		/* NSFNET-IGP */
#define	IPPROTO_DGP		86		/* dissimilar gateway prot. */
#define	IPPROTO_TCF		87		/* TCF */
#define	IPPROTO_IGRP		88		/* Cisco/GXS IGRP */
#define	IPPROTO_OSPFIGP		89		/* OSPFIGP */
#define	IPPROTO_SRPC		90		/* Strite RPC protocol */
#define	IPPROTO_LARP		91		/* Locus Address Resoloution */
#define	IPPROTO_MTP		92		/* Multicast Transport */
#define	IPPROTO_AX25		93		/* AX.25 Frames */
#define	IPPROTO_IPEIP		94		/* IP encapsulated in IP */
#define	IPPROTO_MICP		95		/* Mobile Int.ing control */
#define	IPPROTO_SCCSP		96		/* Semaphore Comm. security */
#define	IPPROTO_ETHERIP		97		/* Ethernet IP encapsulation */
#define	IPPROTO_ENCAP		98		/* encapsulation header */
#define	IPPROTO_APES		99		/* any private encr. scheme */
#define	IPPROTO_GMTP		100		/* GMTP*/
#define	IPPROTO_IPCOMP		108		/* payload compression (IPComp) */
#define	IPPROTO_PIM		103		/* Protocol Independent Mcast */
#define	IPPROTO_PGM		113		/* PGM */
#define IPPROTO_SCTP		132		/* SCTP (RFC2960) */
/* 134-254: Partly Unassigned */
#define	IPPROTO_MH		135		/* IPv6 Mobility Header */
/* 255: Reserved */
/* BSD Private, local use, namespace incursion */
#define	IPPROTO_DIVERT		254		/* divert pseudo-protocol */
#define	IPPROTO_RAW		255		/* raw IP packet */
#define	IPPROTO_MAX		256

/* last return value of *_input(), meaning "all job for this pkt is done".  */
#define	IPPROTO_DONE		257

/*
 * Local port number conventions:
 *
 * When a user does a bind(2) or connect(2) with a port number of zero,
 * a non-conflicting local port address is chosen.
 * The default range is IPPORT_RESERVED through
 * IPPORT_USERRESERVED, although that is settable by sysctl.
 *
 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
 * default assignment range.
 *
 * The value IP_PORTRANGE_DEFAULT causes the default behavior.
 *
 * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers
 * into the "high" range.  These are reserved for client outbound connections
 * which do not want to be filtered by any firewalls.
 *
 * The value IP_PORTRANGE_LOW changes the range to the "low" are
 * that is (by convention) restricted to privileged processes.  This
 * convention is based on "vouchsafe" principles only.  It is only secure
 * if you trust the remote host to restrict these ports.
 *
 * The default range of ports and the high range can be changed by
 * sysctl(3).  (net.inet.ip.port{hi,low}{first,last}_auto)
 *
 * Changing those values has bad security implications if you are
 * using a a stateless firewall that is allowing packets outside of that
 * range in order to allow transparent outgoing connections.
 *
 * Such a firewall configuration will generally depend on the use of these
 * default values.  If you change them, you may find your Security
 * Administrator looking for you with a heavy object.
 *
 * For a slightly more orthodox text view on this:
 *
 *            ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers
 *
 *    port numbers are divided into three ranges:
 *
 *                0 -  1023 Well Known Ports
 *             1024 - 49151 Registered Ports
 *            49152 - 65535 Dynamic and/or Private Ports
 *
 */

/*
 * Ports < IPPORT_RESERVED are reserved for
 * privileged processes (e.g. root).         (IP_PORTRANGE_LOW)
 * Ports > IPPORT_USERRESERVED are reserved
 * for servers, not necessarily privileged.  (IP_PORTRANGE_DEFAULT)
 */
#define	IPPORT_RESERVED		1024
#define	IPPORT_USERRESERVED	5000

/*
 * Default local port range to use by setting IP_PORTRANGE_HIGH
 */
#define	IPPORT_HIFIRSTAUTO	49152
#define	IPPORT_HILASTAUTO	65535

/*
 * Scanning for a free reserved port return a value below IPPORT_RESERVED,
 * but higher than IPPORT_RESERVEDSTART.  Traditionally the start value was
 * 512, but that conflicts with some well-known-services that firewalls may
 * have a fit if we use.
 */
#define IPPORT_RESERVEDSTART	600

/*
 * Internet address (a structure for historical reasons)
 */

typedef u_int32_t       in_addr_t;

struct in_addr {
	in_addr_t s_addr;
};

/*
 * Definitions of bits in internet address integers.
 * On subnets, the decomposition of addresses to host and net parts
 * is done according to subnet mask, not the masks here.
 */
#define	IN_CLASSA(i)		(((u_int32_t)(i) & 0x80000000) == 0)
#define	IN_CLASSA_NET		0xff000000
#define	IN_CLASSA_NSHIFT	24
#define	IN_CLASSA_HOST		0x00ffffff
#define	IN_CLASSA_MAX		128

#define	IN_CLASSB(i)		(((u_int32_t)(i) & 0xc0000000) == 0x80000000)
#define	IN_CLASSB_NET		0xffff0000
#define	IN_CLASSB_NSHIFT	16
#define	IN_CLASSB_HOST		0x0000ffff
#define	IN_CLASSB_MAX		65536

#define	IN_CLASSC(i)		(((u_int32_t)(i) & 0xe0000000) == 0xc0000000)
#define	IN_CLASSC_NET		0xffffff00
#define	IN_CLASSC_NSHIFT	8
#define	IN_CLASSC_HOST		0x000000ff

#define	IN_CLASSD(i)		(((u_int32_t)(i) & 0xf0000000) == 0xe0000000)
#define	IN_CLASSD_NET		0xf0000000	/* These ones aren't really */
#define	IN_CLASSD_NSHIFT	28		/* net and host fields, but */
#define	IN_CLASSD_HOST		0x0fffffff	/* routing needn't know.    */
#define	IN_MULTICAST(i)		IN_CLASSD(i)

#define	IN_EXPERIMENTAL(i)	(((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
#define	IN_BADCLASS(i)		(((u_int32_t)(i) & 0xf0000000) == 0xf0000000)

#define IN_LOCAL_GROUP(i)	(((u_int32_t)(i) & 0xffffff00) == 0xe0000000)

#define	INADDR_ANY		(u_int32_t)0x00000000
#define	INADDR_LOOPBACK		(u_int32_t)0x7f000001