3 * Alexander V. Chernikov <melifaro@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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 * 3. 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.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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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
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32 #ifndef _NETINET_IN_FIB_H_
33 #define _NETINET_IN_FIB_H_
36 /* common fields shared among all 'struct route' */
37 struct nhop_object *ro_nh;
38 struct llentry *ro_lle;
42 uint16_t ro_mtu; /* saved ro_rt mtu */
45 struct sockaddr_in ro_dst4;
48 /* Basic nexthop info used for uRPF/mtu checks */
50 struct ifnet *nh_ifp; /* Logical egress interface */
51 uint16_t nh_mtu; /* nexthop mtu */
52 uint16_t nh_flags; /* nhop flags */
53 struct in_addr nh_addr; /* GW/DST IPv4 address */
56 /* Extended nexthop info used for control protocols */
57 struct nhop4_extended {
58 struct ifnet *nh_ifp; /* Logical egress interface */
59 struct in_ifaddr *nh_ia; /* Associated address */
60 uint16_t nh_mtu; /* nexthop mtu */
61 uint16_t nh_flags; /* nhop flags */
63 struct in_addr nh_addr; /* GW/DST IPv4 address */
64 struct in_addr nh_src; /* default source IPv4 address */
68 int fib4_lookup_nh_basic(uint32_t fibnum, struct in_addr dst, uint32_t flags,
69 uint32_t flowid, struct nhop4_basic *pnh4);
70 int fib4_lookup_nh_ext(uint32_t fibnum, struct in_addr dst, uint32_t flags,
71 uint32_t flowid, struct nhop4_extended *pnh4);
72 void fib4_free_nh_ext(uint32_t fibnum, struct nhop4_extended *pnh4);
74 struct nhop_object *fib4_lookup(uint32_t fibnum, struct in_addr dst,
75 uint32_t scopeid, uint32_t flags, uint32_t flowid);
76 int fib4_check_urpf(uint32_t fibnum, struct in_addr dst, uint32_t scopeid,
77 uint32_t flags, const struct ifnet *src_if);
78 struct nhop_object *fib4_lookup_debugnet(uint32_t fibnum, struct in_addr dst,
79 uint32_t scopeid, uint32_t flags);