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/*      $NetBSD: if_arc.h,v 1.13 1999/11/19 20:41:19 thorpej Exp $      */

/* $FreeBSD: src/sys/net/if_arc.h,v 1.3 2002/03/19 21:54:16 alfred Exp $ */

/*

 * Copyright (c) 1982, 1986, 1993

 *      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 the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *      This product includes software developed by the University of

 *      California, Berkeley and its contributors.

 * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 * from: NetBSD: if_ether.h,v 1.10 1994/06/29 06:37:55 cgd Exp

 *       @(#)if_ether.h 8.1 (Berkeley) 6/10/93

 */

#ifndef _NET_IF_ARC_H_

#define _NET_IF_ARC_H_

/*

 * Arcnet address - 1 octets

 * don't know who uses this.

 */

struct arc_addr {

        u_int8_t  arc_addr_octet[1];

} __attribute__((__packed__));

/*

 * Structure of a 2.5MB/s Arcnet header.

 * as given to interface code.

 */

struct  arc_header {

        u_int8_t  arc_shost;

        u_int8_t  arc_dhost;

        u_int8_t  arc_type;

        /*

         * only present for newstyle encoding with LL fragmentation.

         * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.

         */

        u_int8_t  arc_flag;

        u_int16_t arc_seqid;

        /*

         * only present in exception packets (arc_flag == 0xff)

         */

        u_int8_t  arc_type2;    /* same as arc_type */

        u_int8_t  arc_flag2;    /* real flag value */

        u_int16_t arc_seqid2;   /* real seqid value */

} __attribute__((__packed__));

#define ARC_ADDR_LEN            1

#define ARC_HDRLEN              3

#define ARC_HDRNEWLEN           6

#define ARC_HDRNEWLEN_EXC       10

/* these lengths are data link layer length - 2*ARC_ADDR_LEN */

#define ARC_MIN_LEN             1

#define ARC_MIN_FORBID_LEN      254

#define ARC_MAX_FORBID_LEN      256

#define ARC_MAX_LEN             508

/* RFC 1051 */

#define ARCTYPE_IP_OLD          240     /* IP protocol */

#define ARCTYPE_ARP_OLD         241     /* address resolution protocol */

/* RFC 1201 */

#define ARCTYPE_IP              212     /* IP protocol */

#define ARCTYPE_ARP             213     /* address resolution protocol */

#define ARCTYPE_REVARP          214     /* reverse addr resolution protocol */

#define ARCTYPE_ATALK           221     /* Appletalk */

#define ARCTYPE_BANIAN          247     /* Banyan Vines */

#define ARCTYPE_IPX             250     /* Novell IPX */

#define ARCTYPE_INET6           0xc4    /* IPng */

#define ARCTYPE_DIAGNOSE        0x80    /* as per ANSI/ATA 878.1 */

#define ARCMTU                  507

#define ARCMIN                  0

#define ARC_PHDS_MAXMTU         60480

struct  arccom {

        struct    ifnet ac_if;          /* network-visible interface */

        u_int16_t ac_seqid;             /* seq. id used by PHDS encap. */

        u_int8_t  arc_shost;

        u_int8_t  arc_dhost;

        u_int8_t  arc_type;

        u_int8_t  dummy0;

        u_int16_t dummy1;

        int sflag, fsflag, rsflag;

        struct mbuf *curr_frag;

        struct ac_frag {

                u_int8_t  af_maxflag;   /* from first packet */

                u_int8_t  af_lastseen;  /* last split flag seen */

                u_int16_t af_seqid;

                struct mbuf *af_packet;

        } ac_fragtab[256];              /* indexed by sender ll address */

};

#ifdef _KERNEL

extern u_int8_t arcbroadcastaddr;

extern int arc_ipmtu;   /* XXX new ip only, no RFC 1051! */

void    arc_ifattach(struct ifnet *, u_int8_t);

void    arc_ifdetach(struct ifnet *);

void    arc_storelladdr(struct ifnet *, u_int8_t);

char    *arc_sprintf(u_int8_t *);

int     arc_isphds(int);

void    arc_input(struct ifnet *, struct mbuf *);

int     arc_output(struct ifnet *, struct mbuf *,

            struct sockaddr *, struct rtentry *);

int     arc_ioctl(struct ifnet *, int, caddr_t);

void            arc_frag_init(struct ifnet *);

struct mbuf *   arc_frag_next(struct ifnet *);

#endif

#endif /* _NET_IF_ARC_H_ */