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_ */
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