1 /* $NetBSD: if_inarp.h,v 1.53 2022/09/03 01:35:03 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)if_ether.h 8.1 (Berkeley) 6/10/93 32 */ 33 34 #ifndef _NETINET_IF_INARP_H_ 35 #define _NETINET_IF_INARP_H_ 36 37 #include <sys/queue.h> /* for LIST_ENTRY */ 38 #include <netinet/in.h> /* for struct in_addr */ 39 40 struct llinfo_arp { 41 LIST_ENTRY(llinfo_arp) la_list; 42 struct rtentry *la_rt; 43 struct mbuf *la_hold; /* last packet until resolved/timeout */ 44 long la_asked; /* last time we QUERIED for this addr */ 45 }; 46 47 struct sockaddr_inarp { 48 u_int8_t sin_len; 49 u_int8_t sin_family; 50 u_int16_t sin_port; 51 struct in_addr sin_addr; 52 struct in_addr sin_srcaddr; 53 u_int16_t sin_tos; 54 u_int16_t sin_other; 55 #define SIN_PROXY 1 56 }; 57 58 #ifdef _KERNEL 59 60 #include <net/pktqueue.h> 61 62 /* ARP timings from RFC5227 */ 63 #define PROBE_WAIT 1 64 #define PROBE_NUM 3 65 #define PROBE_MIN 1 66 #define PROBE_MAX 2 67 #define ANNOUNCE_WAIT 2 68 #define ANNOUNCE_NUM 2 69 #define ANNOUNCE_INTERVAL 2 70 #define MAX_CONFLICTS 10 71 #define RATE_LIMIT_INTERVAL 60 72 #define DEFEND_INTERVAL 10 73 74 extern pktqueue_t *arp_pktq; 75 void arp_ifinit(struct ifnet *, struct ifaddr *); 76 void arp_rtrequest(int, struct rtentry *, const struct rt_addrinfo *); 77 int arpresolve(struct ifnet *, const struct rtentry *, struct mbuf *, 78 const struct sockaddr *, void *, size_t); 79 void arpintr(void *); 80 void arpannounce(struct ifnet *, struct ifaddr *, const uint8_t *); 81 struct llentry *arplookup(struct ifnet *, 82 const struct in_addr *, const struct sockaddr *, int); 83 void arp_drain(void); 84 int arpioctl(u_long, void *); 85 void arpwhohas(struct ifnet *, struct in_addr *); 86 void arp_nud_hint(struct rtentry *); 87 88 void revarpinput(struct mbuf *); 89 int revarpwhoarewe(struct ifnet *, struct in_addr *, struct in_addr *); 90 #endif 91 92 #endif /* !_NETINET_IF_INARP_H_ */ 93