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  *	Research Systems Unix Group
16  *	The University of Michigan
17  *	c/o Mike Clark
18  *	535 W. William Street
19  *	Ann Arbor, Michigan
20  *	+1-313-763-0525
21  *	netatalk@itd.umich.edu
22  *
23  * $FreeBSD: stable/10/sys/netatalk/at.h 165972 2007-01-12 13:18:08Z rwatson $
24  */
25 
26 #ifndef _NETATALK_AT_H_
27 #define	_NETATALK_AT_H_
28 
29 /*
30  * Supported protocols
31  */
32 #define	ATPROTO_DDP	0
33 #define	ATPROTO_AARP	254
34 
35 #define	DDP_MAXSZ	587
36 
37 /*
38  * If ATPORT_FIRST <= Port < ATPORT_RESERVED, the port was created by a
39  * privileged process.
40  *
41  * If ATPORT_RESERVED <= Port < ATPORT_LAST, the port was not necessarily
42  * created by a privileged process.
43  */
44 #define	ATPORT_FIRST	1
45 #define	ATPORT_RESERVED	128
46 #define	ATPORT_LAST	255
47 
48 /*
49  * AppleTalk address.
50  */
51 struct at_addr {
52 	u_short	s_net;
53 	u_char	s_node;
54 };
55 
56 #define	ATADDR_ANYNET	(u_short)0x0000
57 #define	ATADDR_ANYNODE	(u_char)0x00
58 #define	ATADDR_ANYPORT	(u_char)0x00
59 #define	ATADDR_BCAST	(u_char)0xff	/* There is no BCAST for NET. */
60 
61 struct netrange {
62 	u_char	nr_phase;
63 	u_short	nr_firstnet;
64 	u_short	nr_lastnet;
65 };
66 
67 /*
68  * Socket address, AppleTalk style.  We keep magic information in the zero
69  * bytes.  There are three types, NONE, CONFIG which has the phase and a net
70  * range, and IFACE which has the network address of an interface.  IFACE may
71  * be filled in by the client, and is filled in by the kernel.
72  */
73 struct sockaddr_at {
74 	u_char		sat_len;
75 	u_char		sat_family;
76 	u_char		sat_port;
77 	struct at_addr	sat_addr;
78 	union {
79 		struct netrange	r_netrange;
80 		char		r_zero[8];	/* Hide struct netrange here. */
81 	} sat_range;
82 };
83 
84 #define	sat_zero	sat_range.r_zero
85 
86 #endif /* !_NETATALK_AT_H_ */
87