1 /*	$NetBSD: aarp.h,v 1.3 2011/05/08 13:51:31 bouyer Exp $	*/
2 
3 /*
4  * Copyright (c) 1990,1991 Regents of The University of Michigan.
5  * All Rights Reserved.
6  *
7  * Permission to use, copy, modify, and distribute this software and
8  * its documentation for any purpose and without fee is hereby granted,
9  * provided that the above copyright notice appears in all copies and
10  * that both that copyright notice and this permission notice appear
11  * in supporting documentation, and that the name of The University
12  * of Michigan not be used in advertising or publicity pertaining to
13  * distribution of the software without specific, written prior
14  * permission. This software is supplied as is without expressed or
15  * implied warranties of any kind.
16  *
17  * This product includes software developed by the University of
18  * California, Berkeley and its contributors.
19  *
20  *	Research Systems Unix Group
21  *	The University of Michigan
22  *	c/o Wesley Craig
23  *	535 W. William Street
24  *	Ann Arbor, Michigan
25  *	+1-313-764-2278
26  *	netatalk@umich.edu
27  */
28 #ifndef _NETATALK_AARP_H_
29 #define _NETATALK_AARP_H_
30 /*
31  * This structure is used for both phase 1 and 2. Under phase 1
32  * the net is not filled in. It is in phase 2. In both cases, the
33  * hardware address length is (for some unknown reason) 4. If
34  * anyone at Apple could program their way out of paper bag, it
35  * would be 1 and 3 respectively for phase 1 and 2.
36  */
37 union aapa {
38 	u_int8_t ap_pa[4];
39 	struct ap_node {
40 		u_int8_t an_zero;
41 		u_int8_t an_net[2];
42 		u_int8_t an_node;
43 	} ap_node;
44 };
45 
46 struct ether_aarp {
47 	struct arphdr   eaa_hdr;
48 	u_int8_t        aarp_sha[6];
49 	union aapa      aarp_spu;
50 	u_int8_t        aarp_tha[6];
51 	union aapa      aarp_tpu;
52 };
53 #define aarp_hrd	eaa_hdr.ar_hrd
54 #define aarp_pro	eaa_hdr.ar_pro
55 #define aarp_hln	eaa_hdr.ar_hln
56 #define aarp_pln	eaa_hdr.ar_pln
57 #define aarp_op		eaa_hdr.ar_op
58 #define aarp_spa	aarp_spu.ap_node.an_node
59 #define aarp_tpa	aarp_tpu.ap_node.an_node
60 #define aarp_spnet	aarp_spu.ap_node.an_net
61 #define aarp_tpnet	aarp_tpu.ap_node.an_net
62 #define aarp_spnode	aarp_spu.ap_node.an_node
63 #define aarp_tpnode	aarp_tpu.ap_node.an_node
64 
65 struct aarptab {
66 	struct at_addr  aat_ataddr;
67 	u_int8_t        aat_enaddr[6];
68 	u_int8_t        aat_timer;
69 	u_int8_t        aat_flags;
70 	struct mbuf    *aat_hold;
71 };
72 
73 #define AARPHRD_ETHER	0x0001
74 
75 #define AARPOP_REQUEST	0x01
76 #define AARPOP_RESPONSE	0x02
77 #define AARPOP_PROBE	0x03
78 
79 extern struct mowner aarp_mowner;
80 
81 #endif /* !_NETATALK_AARP_H_ */
82