appletalk.h

/*
 * Copyright (c) 1988, 1989, 1990, 1993, 1994, 1995, 1996
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code distributions
 * retain the above copyright notice and this paragraph in its entirety, (2)
 * distributions including binary code include the above copyright notice and
 * this paragraph in its entirety in the documentation or other materials
 * provided with the distribution, and (3) all advertising materials mentioning
 * features or use of this software display the following acknowledgement:
 * ``This product includes software developed by the University of California,
 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
 * the University nor the names of its contributors may be used to endorse
 * or promote products derived from this software without specific prior
 * written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * AppleTalk protocol formats (courtesy Bill Croft of Stanford/SUMEX).
 */

struct LAP {
	nd_uint8_t	dst;
	nd_uint8_t	src;
	nd_uint8_t	type;
};
#define lapShortDDP	1	/* short DDP type */
#define lapDDP		2	/* DDP type */
#define lapKLAP		'K'	/* Kinetics KLAP type */

/*
 * UDP port range used for ddp-in-udp encapsulation is 16512-16639
 * for client sockets (128-255) and 200-327 for server sockets
 * (0-127).  We also try to recognize the pre-April 88 server
 * socket range of 768-895.
 */
#define atalk_port(p) \
	(((unsigned)((p) - 16512) < 128) || \
	 ((unsigned)((p) - 200) < 128) || \
	 ((unsigned)((p) - 768) < 128))