1/*
2 * Copyright (c) 1988, 1989, 1990, 1993, 1994, 1995, 1996
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
16 * written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 *
21 * AppleTalk protocol formats (courtesy Bill Croft of Stanford/SUMEX).
22 */
23
24struct LAP {
25	nd_uint8_t	dst;
26	nd_uint8_t	src;
27	nd_uint8_t	type;
28};
29#define lapShortDDP	1	/* short DDP type */
30#define lapDDP		2	/* DDP type */
31#define lapKLAP		'K'	/* Kinetics KLAP type */
32
33/* Datagram Delivery Protocol */
34
35struct atDDP {
36	nd_uint16_t	length;
37	nd_uint16_t	checksum;
38	nd_uint16_t	dstNet;
39	nd_uint16_t	srcNet;
40	nd_uint8_t	dstNode;
41	nd_uint8_t	srcNode;
42	nd_uint8_t	dstSkt;
43	nd_uint8_t	srcSkt;
44	nd_uint8_t	type;
45};
46
47struct atShortDDP {
48	nd_uint16_t	length;
49	nd_uint8_t	dstSkt;
50	nd_uint8_t	srcSkt;
51	nd_uint8_t	type;
52};
53
54#define	ddpMaxWKS	0x7F
55#define	ddpMaxData	586
56#define	ddpLengthMask	0x3FF
57#define	ddpHopShift	10
58#define	ddpSize		13	/* size of DDP header (avoid struct padding) */
59#define	ddpSSize	5
60#define	ddpWKS		128	/* boundary of DDP well known sockets */
61#define	ddpRTMP		1	/* RTMP type */
62#define	ddpRTMPrequest	5	/* RTMP request type */
63#define	ddpNBP		2	/* NBP type */
64#define	ddpATP		3	/* ATP type */
65#define	ddpECHO		4	/* ECHO type */
66#define	ddpIP		22	/* IP type */
67#define	ddpARP		23	/* ARP type */
68#define ddpEIGRP        88      /* EIGRP over Appletalk */
69#define	ddpKLAP		0x4b	/* Kinetics KLAP type */
70
71
72/* AppleTalk Transaction Protocol */
73
74struct atATP {
75	nd_uint8_t	control;
76	nd_uint8_t	bitmap;
77	nd_uint16_t	transID;
78	nd_uint32_t	userData;
79};
80
81#define	atpReqCode	0x40
82#define	atpRspCode	0x80
83#define	atpRelCode	0xC0
84#define	atpXO		0x20
85#define	atpEOM		0x10
86#define	atpSTS		0x08
87#define	atpFlagMask	0x3F
88#define	atpControlMask	0xF8
89#define	atpMaxNum	8
90#define	atpMaxData	578
91
92
93/* AppleTalk Echo Protocol */
94
95struct atEcho {
96	nd_uint8_t	echoFunction;
97	nd_uint8_t	echoData[1];	/* Should be [], C99-style */
98};
99
100#define echoSkt		4		/* the echoer socket */
101#define echoSize	1		/* size of echo header */
102#define echoRequest	1		/* echo request */
103#define echoReply	2		/* echo request */
104
105
106/* Name Binding Protocol */
107
108struct atNBP {
109	nd_uint8_t	control;
110	nd_uint8_t	id;
111};
112
113struct atNBPtuple {
114	nd_uint16_t	net;
115	nd_uint8_t	node;
116	nd_uint8_t	skt;
117	nd_uint8_t	enumerator;
118};
119
120#define	nbpBrRq		0x10
121#define	nbpLkUp		0x20
122#define	nbpLkUpReply	0x30
123
124#define	nbpNIS		2
125#define	nbpTupleMax	15
126
127#define	nbpHeaderSize	2
128#define nbpTupleSize	5
129
130#define nbpSkt		2		/* NIS */
131
132
133/* Routing Table Maint. Protocol */
134
135#define	rtmpSkt		1	/* number of RTMP socket */
136#define	rtmpSize	4	/* minimum size */
137#define	rtmpTupleSize	3
138
139
140/* Zone Information Protocol */
141
142struct zipHeader {
143	nd_uint8_t		command;
144	nd_uint8_t		netcount;
145};
146
147#define	zipHeaderSize	2
148#define	zipQuery	1
149#define	zipReply	2
150#define	zipTakedown	3
151#define	zipBringup	4
152#define	ddpZIP		6
153#define	zipSkt		6
154#define	GetMyZone	7
155#define	GetZoneList	8
156
157/*
158 * UDP port range used for ddp-in-udp encapsulation is 16512-16639
159 * for client sockets (128-255) and 200-327 for server sockets
160 * (0-127).  We also try to recognize the pre-April 88 server
161 * socket range of 768-895.
162 */
163#define atalk_port(p) \
164	(((unsigned)((p) - 16512) < 128) || \
165	 ((unsigned)((p) - 200) < 128) || \
166	 ((unsigned)((p) - 768) < 128))
167