1/*-
2 * Copyright (c) 1990,1991 Regents of The University of Michigan.
3 * All Rights Reserved.
4 *
5 * Permission to use, copy, modify, and distribute this software and
6 * its documentation for any purpose and without fee is hereby granted,
7 * provided that the above copyright notice appears in all copies and
8 * that both that copyright notice and this permission notice appear
9 * in supporting documentation, and that the name of The University
10 * of Michigan not be used in advertising or publicity pertaining to
11 * distribution of the software without specific, written prior
12 * permission. This software is supplied as is without expressed or
13 * implied warranties of any kind.
14 *
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 *
18 *	Research Systems Unix Group
19 *	The University of Michigan
20 *	c/o Wesley Craig
21 *	535 W. William Street
22 *	Ann Arbor, Michigan
23 *	+1-313-764-2278
24 *	netatalk@umich.edu
25 *
26 * $FreeBSD$
27 */
28
29#ifndef _NETATALK_AARP_H_
30#define	_NETATALK_AARP_H_
31
32/*
33 * This structure is used for both phase 1 and 2. Under phase 1
34 * the net is not filled in. It is in phase 2. In both cases, the
35 * hardware address length is (for some unknown reason) 4. If
36 * anyone at Apple could program their way out of paper bag, it
37 * would be 1 and 3 respectively for phase 1 and 2.
38 */
39union aapa {
40	u_char ap_pa[4];
41	struct ap_node {
42		u_char an_zero;
43		u_char an_net[2];
44		u_char an_node;
45	} __packed ap_node;
46};
47
48struct ether_aarp {
49	struct arphdr eaa_hdr;
50	u_char aarp_sha[6];
51	union aapa aarp_spu;
52	u_char aarp_tha[6];
53	union aapa aarp_tpu;
54} __packed;
55
56#define	aarp_hrd	eaa_hdr.ar_hrd
57#define	aarp_pro	eaa_hdr.ar_pro
58#define	aarp_hln	eaa_hdr.ar_hln
59#define	aarp_pln	eaa_hdr.ar_pln
60#define	aarp_op		eaa_hdr.ar_op
61#define	aarp_spa	aarp_spu.ap_node.an_node
62#define	aarp_tpa	aarp_tpu.ap_node.an_node
63#define	aarp_spnet	aarp_spu.ap_node.an_net
64#define	aarp_tpnet	aarp_tpu.ap_node.an_net
65#define	aarp_spnode	aarp_spu.ap_node.an_node
66#define	aarp_tpnode	aarp_tpu.ap_node.an_node
67
68struct aarptab {
69	struct at_addr aat_ataddr;
70	u_char aat_enaddr[6];
71	u_char aat_timer;
72	u_char aat_flags;
73	struct mbuf *aat_hold;
74};
75
76#define	AARPHRD_ETHER	0x0001
77
78#define	AARPOP_REQUEST	0x01
79#define	AARPOP_RESPONSE	0x02
80#define	AARPOP_PROBE	0x03
81
82#ifdef _KERNEL
83struct aarptab		*aarptnew(const struct at_addr *);
84#endif
85
86#endif /* _NETATALK_AARP_H_ */
87