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 * 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. 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 */ 36 struct 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 */ 44 struct nhop4_extended { 45 struct ifnet *nh_ifp; /* Logical egress interface */ 46 struct in_ifaddr *nh_ia; /* Associated address */ 47 uint16_t nh_mtu; /* nexthop mtu */ 48 uint16_t nh_flags; /* nhop flags */ 49 uint8_t spare[4]; 50 struct in_addr nh_addr; /* GW/DST IPv4 address */ 51 struct in_addr nh_src; /* default source IPv4 address */ 52 uint64_t spare2; 53 }; 54 55 int fib4_lookup_nh_basic(uint32_t fibnum, struct in_addr dst, uint32_t flags, 56 uint32_t flowid, struct nhop4_basic *pnh4); 57 int fib4_lookup_nh_ext(uint32_t fibnum, struct in_addr dst, uint32_t flags, 58 uint32_t flowid, struct nhop4_extended *pnh4); 59 void fib4_free_nh_ext(uint32_t fibnum, struct nhop4_extended *pnh4); 60 61 struct nhop_object *fib4_lookup(uint32_t fibnum, struct in_addr dst, 62 uint32_t scopeid, uint32_t flags, uint32_t flowid); 63 int fib4_check_urpf(uint32_t fibnum, struct in_addr dst, uint32_t scopeid, 64 uint32_t flags, const struct ifnet *src_if); 65 #endif 66 67