nd6.h

vxworks 6.x 的全部头文件

/* nd6.h - IPv6 Neighbor Discovery 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: nd6.h,v 1.116 2005/01/22 19:23:44 suz Exp $	*/
/*	$KAME: nd6.h,v 1.113 2004/08/11 10:20:48 jinmei Exp $	*/
/*	$FreeBSD: src/sys/netinet6/nd6.h,v 1.2.2.5 2002/04/28 05:40:27 suz Exp $	*/
/*	$KAME: nd6.h,v 1.76 2001/12/18 02:10:31 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.
 */

#ifndef _NETINET6_ND6_H_
#define _NETINET6_ND6_H_

/*
modification history
--------------------
01x,10may05,rp   merged from kame v1.116
01w,03may05,kch  Fixed sysctl variables virtualization (SPR#108823).
01v,29apr05,kch  Fixed virtual stack build.
01u,20apr05,kch  Merged from comp_wn_ipv6_mld_interim-dev branch.
01t,29mar05,sar  Simplify ND_COMPUTE_RTIME calculation
01s,30mar05,nee  Add prefix state flag NDPRF_SUBNETANYCAST
01r,19mar05,nee  Add IN6_LINKMTU and ND6_IFINFO macros
01q,07feb05,vvv  _KERNEL cleanup
01p,26jan05,vvv  fixed bitfield definitions (SPR #92171)
01o,23aug04,rp   merged from COMP_WN_IPV6_BASE6_ITER5_TO_UNIFIED_PRE_MERGE
01n,10aug04,ppp  Put in a fix for ND_COMPUTE_RTIME macro to return lower bound to be 
		 greater than 0.5x
01m,28may04,niq  Merging from base6 label POST_ITER5_FRZ16_REBASE (ver
                 /main/vdt/base6_itn5_networking-int/1)
01l,24feb04,nee  Adding the prototype for ip6EtherResolvRtnwrapper
01k,21nov03,vvv  added INET6 protection
01j,20nov03,niq  Remove copyright_wrs.h file inclusion
01i,05nov03,cdw  Removal of unnecessary _KERNEL guards.
01h,04nov03,rlm  Ran batch header path update for header re-org.
01g,03nov03,rlm  Removed wrn/coreip/ prefix from #includes for header re-org.
01f,11aug03,nee  Merging from label ACCORDION_BASE6_MERGE_BASELINE in
                 accordion codeline to Base6
01e,14may03,vvv  included in6_var.h
01d,01feb03,pas  merge from FreeBSD 4.7 - changed nd6_rtrequest() arg
01c,23oct02,ppp  removed __attribute__((__packed__)) from some of the
                 structures inorder to fix alignment issues with some of the
                 architectures such as mips and sh
01b,10sep02,hsh  add c++ protection
01a,02feb02,ham  changed for tornado build.
*/

#ifdef INET6
/* see net/route.h, or net/if_inarp.h */
#ifndef RTF_ANNOUNCE
#define RTF_ANNOUNCE	RTF_PROTO2
#endif

#include <sys/queue.h>
#include <sys/callout.h>
#include <sys/socket.h>         /* XXX for sockaddr in if.h */
#include <net/if.h>
#include <netinet/in.h>
#include <netinet6/in6_var.h>

#ifdef __cplusplus
extern "C" {
#endif
    
struct	llinfo_nd6 {
	struct	llinfo_nd6 *ln_next;
	struct	llinfo_nd6 *ln_prev;
	struct	rtentry *ln_rt;
	struct	mbuf *ln_hold;	/* last packet until resolved/timeout */
	long	ln_asked;	/* number of queries already sent for this addr */
	u_long	ln_expire;	/* lifetime for NDP state transition */
	short	ln_state;	/* reachability state */
	short	ln_router;	/* 2^0: ND6 router bit */
	int	ln_byhint;	/* # of times we made it reachable by UL hint */
	long	ln_ntick;
	struct callout ln_timer_ch;
};

#define ND6_LLINFO_NOSTATE	-2
/*
 * We don't need the WAITDELETE state any more, but we keep the definition
 * in a comment line instead of removing it. This is necessary to avoid
 * unintentionally reusing the value for another purpose, which might
 * affect backward compatibility with old applications.
 * (20000711 [e-mail])
 */
/* #define ND6_LLINFO_WAITDELETE	-1 */
#define ND6_LLINFO_INCOMPLETE	0
#define ND6_LLINFO_REACHABLE	1
#define ND6_LLINFO_STALE	2
#define ND6_LLINFO_DELAY	3
#define ND6_LLINFO_PROBE	4

#define ND6_IS_LLINFO_PROBREACH(n) ((n)->ln_state > ND6_LLINFO_INCOMPLETE)
#define ND6_LLINFO_PERMANENT(n)	(((n)->ln_expire == 0) && ((n)->ln_state > ND6_LLINFO_INCOMPLETE))

struct nd_ifinfo {
	u_int32_t linkmtu;		/* LinkMTU */
	u_int32_t maxmtu;		/* Upper bound of LinkMTU */
	u_int32_t basereachable;	/* BaseReachableTime */
	u_int32_t reachable;		/* Reachable Time */
	u_int32_t retrans;		/* Retrans Timer */
	u_int32_t flags;		/* Flags */
	int recalctm;			/* BaseReacable re-calculation timer */
	u_int8_t chlim;			/* CurHopLimit */
	u_int8_t initialized; /* Flag to see the entry is initialized */
	/* the following 3 members are for privacy extension for addrconf */
	u_int8_t randomseed0[8]; /* upper 64 bits of MD5 digest */
	u_int8_t randomseed1[8]; /* lower 64 bits (usually the EUI64 IFID) */
	u_int8_t randomid[8];	/* current random ID */
};

#define ND6_IFF_PERFORMNUD	0x1
#define ND6_IFF_ACCEPT_RTADV	0x2
#define ND6_IFF_PREFER_SOURCE	0x4 /* XXX: not related to ND. */
#define ND6_IFF_IFDISABLED	0x8 /* IPv6 operation is disabled due to
				     * DAD failure.  (XXX: not ND-specific)
				     */
#define ND6_IFF_DONT_SET_IFROUTE	0x10

#ifdef _WRS_KERNEL
#define ND_IFINFO(ifp) \
	(((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->nd_ifinfo)
#define IN6_LINKMTU(ifp) \
	((ND_IFINFO(ifp)->linkmtu && ND_IFINFO(ifp)->linkmtu < (ifp)->if_mtu) \
	    ? ND_IFINFO(ifp)->linkmtu \
	    : ((ND_IFINFO(ifp)->maxmtu && ND_IFINFO(ifp)->maxmtu < (ifp)->if_mtu) \
		? ND_IFINFO(ifp)->maxmtu : (ifp)->if_mtu))
#endif

struct in6_nbrinfo {
	char ifname[IFNAMSIZ];	/* if name, e.g. "en0" */
	struct in6_addr addr;	/* IPv6 address of the neighbor */
	long	asked;		/* number of queries already sent for this addr */
	int	isrouter;	/* if it acts as a router */
	int	state;		/* reachability state */
	int	expire;		/* lifetime for NDP state transition */
};

#define DRLSTSIZ 10
#define PRLSTSIZ 10
struct	in6_drlist {
	char ifname[IFNAMSIZ];
	struct {
		struct	in6_addr rtaddr;
		u_char	flags;
		u_short	rtlifetime;
		u_long	expire;
		u_short if_index;
	} defrouter[DRLSTSIZ];
};

struct	in6_defrouter {
	struct	in6_addr rtaddr;
	u_char	flags;
	u_short	rtlifetime;
	u_long	expire;
	u_short if_index;
};

#ifdef _WRS_KERNEL
struct	in6_oprlist {
	char ifname[IFNAMSIZ];
	struct {
		struct in6_addr prefix;
		u_char raflags;
		u_char prefixlen;
		u_char origin;
		u_long vltime;
		u_long pltime;
		u_long expire;
		u_short if_index;
		u_short advrtrs; /* number of advertisement routers */
		struct	in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */
	} prefix[PRLSTSIZ];
};
#endif

struct	in6_prlist {
	char ifname[IFNAMSIZ];
	struct {
		struct in6_addr prefix;
		u_char  raflags;
		u_char prefixlen;
		u_char origin;
		u_int32_t vltime;
		u_int32_t pltime;
		time_t expire;
		u_short if_index;
		u_short advrtrs; /* number of advertisement routers */
		struct	in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */
	} prefix[PRLSTSIZ];
};

struct in6_prefix {
	struct sockaddr_in6 prefix;
	u_char		raflags;
	u_char		prefixlen;
	u_char		origin;
	u_int32_t	vltime;
	u_int32_t	pltime;
	time_t		expire;
	u_int32_t	flags;
	int		refcnt;
	u_short		if_index;
	u_short		advrtrs; /* number of advertisement routers */
	/* struct in6_addr advrtr[] */
};

#ifdef _WRS_KERNEL
struct	in6_ondireq {
	char ifname[IFNAMSIZ];
	struct {
		u_int32_t linkmtu;	/* LinkMTU */
		u_int32_t maxmtu;	/* Upper bound of LinkMTU */
		u_int32_t basereachable; /* BaseReachableTime */
		u_int32_t reachable;	/* Reachable Time */
		u_int32_t retrans;	/* Retrans Timer */
		u_int32_t flags;	/* Flags */
		int recalctm;		/* BaseReacable re-calculation timer */
		u_int8_t chlim;		/* CurHopLimit */
		u_int8_t receivedra;
	} ndi;
};
#endif

struct	in6_ndireq {
	char ifname[IFNAMSIZ];
	struct nd_ifinfo ndi;
};

struct	in6_ndifreq {
	char ifname[IFNAMSIZ];
	u_long ifindex;
};

/* Prefix status */
#define NDPRF_ONLINK		0x1
#define NDPRF_DETACHED		0x2
#define NDPRF_HOME		0x4
#define NDPRF_SUBNETANYCAST     0x8

/* protocol constants */
#define MAX_RTR_SOLICITATION_DELAY	1	/* 1sec */
#define RTR_SOLICITATION_INTERVAL	4	/* 4sec */
#define MAX_RTR_SOLICITATIONS		3

#define ND6_INFINITE_LIFETIME		0xffffffff

#ifdef _WRS_KERNEL
/* node constants */
#define MAX_REACHABLE_TIME		3600000	/* msec */
#define REACHABLE_TIME			30000	/* msec */