xref: /trueos/sys/netatalk/aarp.h (revision b4bc270e8f6757fa385861750ab22ba0ca4978ed)
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  */
39 union 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 
48 struct 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 
68 struct 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
83 struct aarptab		*aarptnew(const struct at_addr *);
84 #endif
85 
86 #endif /* _NETATALK_AARP_H_ */
87