1/*-
2 * Copyright (c) 2015
3 * 	Alexander V. Chernikov <melifaro@FreeBSD.org>
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 */
31
32#ifndef _NETINET_IN_FIB_H_
33#define	_NETINET_IN_FIB_H_
34
35/* Basic nexthop info used for uRPF/mtu checks */
36struct nhop4_basic {
37	struct ifnet	*nh_ifp;	/* Logical egress interface */
38	uint16_t	nh_mtu;		/* nexthop mtu */
39	uint16_t	nh_flags;	/* nhop flags */
40	struct in_addr	nh_addr;	/* GW/DST IPv4 address */
41};
42
43/* Extended nexthop info used for control protocols */
44struct nhop4_extended {
45	struct ifnet	*nh_ifp;	/* Logical egress interface */
46	uint16_t	nh_mtu;		/* nexthop mtu */
47	uint16_t	nh_flags;	/* nhop flags */
48	uint8_t		spare[4];
49	struct in_addr	nh_addr;	/* GW/DST IPv4 address */
50	struct in_addr	nh_src;		/* default source IPv4 address */
51	uint64_t	spare2[2];
52};
53
54int fib4_lookup_nh_basic(uint32_t fibnum, struct in_addr dst, uint32_t flags,
55    uint32_t flowid, struct nhop4_basic *pnh4);
56int fib4_lookup_nh_ext(uint32_t fibnum, struct in_addr dst, uint32_t flags,
57    uint32_t flowid, struct nhop4_extended *pnh4);
58void fib4_free_nh_ext(uint32_t fibnum, struct nhop4_extended *pnh4);
59
60#endif
61
62