/*      $NetBSD: at.h,v 1.8 2014/12/02 19:33:44 christos 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.
*
* This product includes software developed by the University of
* California, Berkeley and its contributors.
*
*      Research Systems Unix Group
*      The University of Michigan
*      c/o Wesley Craig
*      535 W. William Street
*      Ann Arbor, Michigan
*      +1-313-764-2278
*      [email protected]
*/

#ifndef _NETATALK_AT_H_
#define _NETATALK_AT_H_

#include <sys/ansi.h>

#ifndef sa_family_t
typedef __sa_family_t   sa_family_t;
#define sa_family_t     __sa_family_t
#endif

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

#define DDP_MAXSZ       587

/*
* 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 {
       uint16_t         s_net;
       uint8_t          s_node;
};

#define ATADDR_ANYNET   (uint16_t)0x0000
#define ATADDR_ANYNODE  (uint8_t)0x00
#define ATADDR_ANYPORT  (uint8_t)0x00
#define ATADDR_BCAST    (uint8_t)0xff   /* There is no BCAST for NET */

struct netrange {
       uint8_t         nr_phase;
       uint16_t        nr_firstnet;
       uint16_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 {
       uint8_t         sat_len;
       sa_family_t     sat_family;
       uint8_t         sat_port;
       struct at_addr  sat_addr;
       union {
               struct netrange r_netrange;
               char            r_zero[8];      /* Hide a struct netrange in
                                                * here */
       } sat_range;
};

#define sat_zero sat_range.r_zero

#ifdef _KERNEL
#include <sys/protosw.h>

extern struct domain atalkdomain;
extern const struct protosw atalksw[];
#endif

#if defined(_KERNEL) || defined(_TEST)
#define ATALK_ADDRSTRLEN 10

extern struct domain atalkdomain;
int at_print(char *, size_t, const struct at_addr *);
int sat_print(char *, size_t, const void *);
#endif

#endif  /* !_NETATALK_AT_H_ */