ip6_var.h

vxworks 6.x 的全部头文件

/* ip6_var.h - IPv6 internal structures and definitions */

/*
 * Copyright (c) 2001-2005 Wind River Systems, Inc.
 *
 * The right to copy, distribute, modify or otherwise make use
 * of this software may be licensed only pursuant to the terms
 * of an applicable Wind River license agreement.
 */

/*	$KAME: ip6_var.h,v 1.130 2005/03/18 10:23:05 suz Exp $	*/
/*	$KAME: ip6_var.h,v 1.127 2004/06/02 05:53:15 itojun Exp $	*/
/*	$FreeBSD: src/sys/netinet6/ip6_var.h,v 1.2.2.3 2002/08/08 16:44:57 ume Exp $	*/
/*	$KAME: ip6_var.h,v 1.62 2001/05/03 14:51:48 itojun Exp $	*/

/*
 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
 * 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. Neither the name of the project 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 PROJECT 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 PROJECT 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, 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.
 *
 *	@(#)ip_var.h	8.1 (Berkeley) 6/10/93
 */
/*
modification history
--------------------
01n,10may05,kch  Merged from Kame v 1.130.
01m,28apr05,kch  Virtualization changes.
01l,19apr05,rp   merged from comp_wn_ipv6_mld_interim-dev
01k,07feb05,vvv  _KERNEL cleanup
01j,31jan05,niq  virtual stack changes
01i,02feb04,pas  added queue.h for LIST_HEAD
01h,20nov03,niq  Remove copyright_wrs.h file inclusion
01g,05nov03,cdw  Removal of unnecessary _KERNEL guards.
01f,04nov03,rlm  Ran batch header path update for header re-org.
01e,03nov03,rlm  Removed wrn/coreip/ prefix from #includes for header re-org.
01d,13aug03,nee  Merging from label ACCORDION_BASE6_MERGE_BASELINE in
                 accordion codeline to Base6
01c,10jun03,vvv  include netVersion.h
01b,01feb03,pas  merge from FreeBSD 4.7 - removed ip6_mapped_addr_on
*/

#ifndef _NETINET6_IP6_VAR_H_
#define _NETINET6_IP6_VAR_H_

#ifdef __cplusplus
extern "C" {
#endif
     
#include <netVersion.h>
#include <netinet6/ip6.h>
#include <sys/queue.h>

/*
 * IP6 reassembly queue structure.  Each fragment
 * being reassembled is attached to one of these structures.
 */
struct	ip6q {
	u_int32_t	ip6q_head;
	u_int16_t	ip6q_len;
	u_int8_t	ip6q_nxt;	/* ip6f_nxt in first fragment */
	u_int8_t	ip6q_hlim;
	struct ip6asfrag *ip6q_down;
	struct ip6asfrag *ip6q_up;
	u_int32_t	ip6q_ident;
	u_int8_t	ip6q_arrive;
	u_int8_t	ip6q_ttl;
	struct in6_addr	ip6q_src, ip6q_dst;
	struct ip6q	*ip6q_next;
	struct ip6q	*ip6q_prev;
	int		ip6q_unfrglen;	/* len of unfragmentable part */
#ifdef notyet
	u_char		*ip6q_nxtp;
#endif
	int		ip6q_nfrag;	/* # of fragments */
};

struct	ip6asfrag {
	u_int32_t	ip6af_head;
	u_int16_t	ip6af_len;
	u_int8_t	ip6af_nxt;
	u_int8_t	ip6af_hlim;
	/* must not override the above members during reassembling */
	struct ip6asfrag *ip6af_down;
	struct ip6asfrag *ip6af_up;
	struct mbuf	*ip6af_m;
	int		ip6af_offset;	/* offset in ip6af_m to next header */
	int		ip6af_frglen;	/* fragmentable part length */
	int		ip6af_off;	/* fragment offset */
	u_int16_t	ip6af_mff;	/* more fragment bit in frag off */
};

#define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m))

struct	ip6_moptions {
	struct	ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */
	u_char	im6o_multicast_hlim;	/* hoplimit for outgoing multicasts */
	u_char	im6o_multicast_loop;	/* 1 >= hear sends if a member */
	LIST_HEAD(, in6_multi_mship) im6o_memberships;
};

/*
 * Control options for outgoing packets
 */

/* Routing header related info */
struct	ip6po_rhinfo {
	struct	ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */
	struct	route_in6 ip6po_rhi_route; /* Route to the 1st hop */
};
#define ip6po_rthdr	ip6po_rhinfo.ip6po_rhi_rthdr
#define ip6po_route	ip6po_rhinfo.ip6po_rhi_route
#define ip6po_rthdr2	ip6po_rhinfo2.ip6po_rhi_rthdr
#define ip6po_route2	ip6po_rhinfo2.ip6po_rhi_route

/* Nexthop related info */
struct	ip6po_nhinfo {
	struct	sockaddr *ip6po_nhi_nexthop;
	struct	route_in6 ip6po_nhi_route; /* Route to the nexthop */
};
#define ip6po_nexthop	ip6po_nhinfo.ip6po_nhi_nexthop
#define ip6po_nextroute	ip6po_nhinfo.ip6po_nhi_route

struct	ip6_pktopts {
	int	ip6po_hlim;	/* Hoplimit for outgoing packets */

	/* Outgoing IF/address information */
	struct	in6_pktinfo *ip6po_pktinfo;

	/* Next-hop address information */
	struct	ip6po_nhinfo ip6po_nhinfo;
	
	struct	ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */

	/* Destination options header (before a routing header) */
	struct	ip6_dest *ip6po_dest1;

	/* Routing header related info. */
	struct	ip6po_rhinfo ip6po_rhinfo;

#ifdef MIP6
	/* Mobile IPv6 type 2 Routing header. */
	struct	ip6po_rhinfo ip6po_rhinfo2;

	/* Home Address Destination option */
	struct  ip6_dest *ip6po_hoa;
#endif /* MIP6 */

	/* Destination options header (after a routing header) */
	struct	ip6_dest *ip6po_dest2;

	int	ip6po_tclass;	/* traffic class */

	int	ip6po_minmtu;  /* fragment vs PMTU discovery policy */
#define IP6PO_MINMTU_MCASTONLY	-1 /* default; send at min MTU for multicast*/
#define IP6PO_MINMTU_DISABLE	 0 /* always perform pmtu disc */
#define IP6PO_MINMTU_ALL	 1 /* always send at min MTU */

	int	ip6po_prefer_tempaddr;  /* whether temporary addresses are
					   preferred as source address */
#define IP6PO_TEMPADDR_SYSTEM	-1 /* follow the system default */
#define IP6PO_TEMPADDR_NOTPREFER 0 /* not prefer temporary address */
#define IP6PO_TEMPADDR_PREFER	 1 /* prefer temporary address */

	int ip6po_flags;
#if 0	/* parameters in this block is obsolete. do not reuse the values. */
#define IP6PO_REACHCONF	0x01	/* upper-layer reachability confirmation. */
#define IP6PO_MINMTU	0x02	/* use minimum MTU (IPV6_USE_MIN_MTU) */
#endif
#define IP6PO_DONTFRAG	0x04	/* disable fragmentation (IPV6_DONTFRAG) */
#define IP6PO_USECOA	0x08	/* use care of address */
#define IP6PO_NOTUSEBCE	0x10	/* Don't use  */
};

/*
 * Control options for incoming packets
 */

struct	ip6stat {
	u_quad_t ip6s_total;		/* total packets received */
	u_quad_t ip6s_tooshort;		/* packet too short */
	u_quad_t ip6s_toosmall;		/* not enough data */
	u_quad_t ip6s_fragments;	/* fragments received */
	u_quad_t ip6s_fragdropped;	/* frags dropped(dups, out of space) */