table.h   [plain text]


/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.0 (the 'License').  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource and read it before using
 * this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License."
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1983, 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 acknowledgment:
 *	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.
 *
 *	@(#)defs.h	8.1 (Berkeley) 6/5/93
 */

/*
 * Routing table management daemon.
 */

/*
 * Routing table structure; differs a bit from kernel tables.
 *
 * Note: the union below must agree in the first 4 members
 * so the ioctl's will work.
 */
struct rthash {
	struct	rt_entry *rt_forw;
	struct	rt_entry *rt_back;
};
#ifdef RTM_ADD
#define rtentry ortentry
#endif

struct rt_entry {
	struct	rt_entry *rt_forw;
	struct	rt_entry *rt_back;
	union {
		struct	rtentry rtu_rt;
		struct rtuentry {
			u_long	rtu_hash;
			struct	sockaddr rtu_dst;
			struct	sockaddr rtu_router;
			short	rtu_rtflags; /* used by rtioctl */
			short	rtu_wasted[5];
			int	rtu_flags;
			int	rtu_state;
			int	rtu_timer;
			int	rtu_metric;
			int	rtu_ifmetric;
			struct	interface *rtu_ifp;
		} rtu_entry;
	} rt_rtu;
};

#define	rt_rt		rt_rtu.rtu_entry		/* pass to ioctl */
#define	rt_hash		rt_rtu.rtu_entry.rtu_hash	/* for net or host */
#define	rt_dst		rt_rtu.rtu_entry.rtu_dst	/* match value */
#define	rt_router	rt_rtu.rtu_entry.rtu_router	/* who to forward to */
#define	rt_flags	rt_rtu.rtu_entry.rtu_flags	/* kernel flags */
#define	rt_timer	rt_rtu.rtu_entry.rtu_timer	/* for invalidation */
#define	rt_state	rt_rtu.rtu_entry.rtu_state	/* see below */
#define	rt_metric	rt_rtu.rtu_entry.rtu_metric	/* cost of route */
#define	rt_ifmetric	rt_rtu.rtu_entry.rtu_ifmetric	/* cost of route if */
#define	rt_ifp		rt_rtu.rtu_entry.rtu_ifp	/* interface to take */

#define	ROUTEHASHSIZ	32		/* must be a power of 2 */
#define	ROUTEHASHMASK	(ROUTEHASHSIZ - 1)

/*
 * "State" of routing table entry.
 */
#define	RTS_CHANGED	0x1		/* route has been altered recently */
#define	RTS_EXTERNAL	0x2		/* extern info, not installed or sent */
#define	RTS_INTERNAL	0x4		/* internal route, not installed */
#define	RTS_PASSIVE	IFF_PASSIVE	/* don't time out route */
#define	RTS_INTERFACE	IFF_INTERFACE	/* route is for network interface */
#define	RTS_REMOTE	IFF_REMOTE	/* route is for ``remote'' entity */
#define	RTS_SUBNET	IFF_SUBNET	/* route is for network subnet */

/*
 * Flags are same as kernel, with this addition for af_rtflags:
 */
#define	RTF_SUBNET	0x80000		/* pseudo: route to subnet */

EXTERN struct	rthash nethash[ROUTEHASHSIZ];
EXTERN struct	rthash hosthash[ROUTEHASHSIZ];
struct	rt_entry *rtlookup();
struct	rt_entry *rtfind();