/*	$OpenBSD: at.h,v 1.4 2010/09/23 09:27:49 claudio Exp $	*/

/*
 * Copyright (c) 1990,1991 Regents of The University of Michigan.
 * All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software and
 * its documentation for any purpose and without fee is hereby granted,
 * provided that the above copyright notice appears in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation, and that the name of The University
 * of Michigan not be used in advertising or publicity pertaining to
 * distribution of the software without specific, written prior
 * permission. This software is supplied as is without expressed or
 * implied warranties of any kind.
 *
 *	Research Systems Unix Group
 *	The University of Michigan
 *	c/o Mike Clark
 *	535 W. William Street
 *	Ann Arbor, Michigan
 *	+1-313-763-0525
 *	netatalk@itd.umich.edu
 */

/*
 * The following is the contents of the COPYRIGHT file from the
 * netatalk-1.4a2 distribution, from which this file is derived.
 */
/*
 * Copyright (c) 1990,1996 Regents of The University of Michigan.
 *
 * All Rights Reserved.
 *
 *    Permission to use, copy, modify, and distribute this software and
 *    its documentation for any purpose and without fee is hereby granted,
 *    provided that the above copyright notice appears in all copies and
 *    that both that copyright notice and this permission notice appear
 *    in supporting documentation, and that the name of The University
 *    of Michigan not be used in advertising or publicity pertaining to
 *    distribution of the software without specific, written prior
 *    permission. This software is supplied as is without expressed or
 *    implied warranties of any kind.
 *
 * This product includes software developed by the University of
 * California, Berkeley and its contributors.
 *
 * Solaris code is encumbered by the following:
 *
 *     Copyright (C) 1996 by Sun Microsystems Computer Co.
 *
 *     Permission to use, copy, modify, and distribute this software and
 *     its documentation for any purpose and without fee is hereby
 *     granted, provided that the above copyright notice appear in all
 *     copies and that both that copyright notice and this permission
 *     notice appear in supporting documentation.  This software is
 *     provided "as is" without express or implied warranty.
 *
 * Research Systems Unix Group
 * The University of Michigan
 * c/o Wesley Craig
 * 535 W. William Street
 * Ann Arbor, Michigan
 * +1-313-764-2278
 * netatalk@umich.edu
 */
/*
 * None of the Solaris code mentioned is included in OpenBSD.
 * This code also relies heavily on previous effort in FreeBSD and NetBSD.
 */

#ifndef __AT_HEADER__
#define __AT_HEADER__
/*
 * Supported protocols
 */
#define ATPROTO_DDP	0
#define ATPROTO_AARP	254

#include <net/ethertypes.h>

#define DDP_MAXSZ	587

#define	AT_LLC_SIZE	8

/*
 * If ATPORT_FIRST <= Port < ATPORT_RESERVED,
 * Port was created by a privileged process.
 * If ATPORT_RESERVED <= Port < ATPORT_LAST,
 * Port was not necessarily created by a
 * privileged process.
 */
#define ATPORT_FIRST	1
#define ATPORT_RESERVED	128
#define ATPORT_LAST	255

/*
 * AppleTalk address.
 */
struct at_addr {
    u_int16_t	s_net;
    u_int8_t	s_node;
};

#define ATADDR_ANYNET	(u_int16_t)0x0000
#define ATADDR_ANYNODE	(u_int8_t)0x00
#define ATADDR_ANYPORT	(u_int8_t)0x00
#define ATADDR_BCAST	(u_int8_t)0xff		/* There is no BCAST for NET */

struct netrange {
	u_int8_t	nr_phase;
	u_int16_t	nr_firstnet;
	u_int16_t	nr_lastnet;
};

/*
 * Socket address, AppleTalk style.  We keep magic information in the 
 * zero bytes.  There are three types, NONE, CONFIG which has the phase
 * and a net range, and IFACE which has the network address of an
 * interface.  IFACE may be filled in by the client, and is filled in
 * by the kernel.
 */
struct sockaddr_at {
    u_int8_t		sat_len;
    u_int8_t		sat_family;
    u_int8_t		sat_port;
    struct at_addr	sat_addr;
    union {
	struct netrange	r_netrange;
	int8_t		r_zero[ 8 ];    /* Hide a struct netrange in here */
    } sat_range;
};

#define	sat_zero	sat_range.r_zero

#endif	/* __AT_HEADER__ */