1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 1999 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30/*
31 * Portions of this source code were derived from Berkeley 4.3 BSD
32 * under license from the Regents of the University of California.
33 */
34
35#pragma ident	"%Z%%M%	%I%	%E% SMI"
36
37/*
38 * Routing table management daemon.
39 */
40
41/*
42 * Routing table structure; differs a bit from kernel tables.
43 */
44struct rthash {
45	struct	rt_entry *rt_forw;
46	struct	rt_entry *rt_back;
47};
48
49struct rt_entry {
50	struct	rt_entry *rt_forw;
51	struct	rt_entry *rt_back;
52	uint_t	rt_hash;		/* for net or host */
53	struct	in6_addr rt_dst;	/* match value */
54	struct	in6_addr rt_router;	/* who to forward to */
55	int	rt_prefix_length;	/* bits in prefix */
56	struct	interface *rt_ifp;	/* interface to take */
57	uint_t	rt_flags;		/* kernel flags */
58	uint_t	rt_state;		/* see below */
59	int	rt_timer;		/* for invalidation */
60	int	rt_metric;		/* cost of route including the if */
61	int	rt_tag;			/* route tag attribute */
62};
63
64#define	ROUTEHASHSIZ	32		/* must be a power of 2 */
65#define	ROUTEHASHMASK	(ROUTEHASHSIZ - 1)
66
67/*
68 * "State" of routing table entry.
69 */
70#define	RTS_CHANGED	0x1		/* route has been altered recently */
71#define	RTS_INTERFACE	0x2		/* route is for network interface */
72#define	RTS_PRIVATE	0x4		/* route is private, do not advertise */
73
74/*
75 * XXX This is defined in <inet/ip.h> (but should be defined in <netinet/ip6.h>
76 * for completeness).
77 */
78#define	IPV6_ABITS	128		/* Number of bits in an IPv6 address */
79
80extern struct	rthash	*net_hashes[IPV6_ABITS + 1];
81
82extern void	rtadd(struct in6_addr *, struct in6_addr *, int, int, int,
83    boolean_t, struct interface *);
84extern void	rtchange(struct rt_entry *, struct in6_addr *, short,
85    struct interface *);
86extern void	rtchangeall(void);
87extern void	rtcreate_prefix(struct in6_addr *, struct in6_addr *, int);
88extern void	rtdelete(struct rt_entry *);
89extern void	rtdown(struct rt_entry *);
90extern void	rtdump(void);
91extern struct	rt_entry *rtlookup(struct in6_addr *, int);
92extern void	rtpurgeif(struct interface *);
93