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if_arc.h revision 1.6 
      1 /*	$NetBSD: if_arc.h,v 1.6 1997/03/15 18:12:30 is Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1982, 1986, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  * from: NetBSD: if_ether.h,v 1.10 1994/06/29 06:37:55 cgd Exp
     36  *       @(#)if_ether.h	8.1 (Berkeley) 6/10/93
     37  */
     38 
     39 /*
     40  * Arcnet address - 1 octets
     41  * don't know who uses this.
     42  */
     43 struct arc_addr {
     44 	u_int8_t  arc_addr_octet[1];
     45 };
     46 
     47 /*
     48  * Structure of a 2.5MB/s Arcnet header.
     49  * as given to interface code.
     50  */
     51 struct	arc_header {
     52 	u_int8_t  arc_shost;
     53 	u_int8_t  arc_dhost;
     54 	u_int8_t  arc_type;
     55 	/*
     56 	 * only present for newstyle encoding with LL fragmentation.
     57 	 * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.
     58 	 */
     59 	u_int8_t  arc_flag;
     60 	u_int16_t arc_seqid;
     61 
     62 	/*
     63 	 * only present in exception packets (arc_flag == 0xff)
     64 	 */
     65 	u_int8_t  arc_type2;	/* same as arc_type */
     66 	u_int8_t  arc_flag2;	/* real flag value */
     67 	u_int16_t arc_seqid2;	/* real seqid value */
     68 };
     69 
     70 #define	ARC_ADDR_LEN		1
     71 
     72 #define	ARC_HDRLEN		3
     73 #define	ARC_HDRNEWLEN		6
     74 
     75 /* these lengths are data link layer length - 2*ARC_ADDR_LEN */
     76 #define	ARC_MIN_LEN		1
     77 #define	ARC_MIN_FORBID_LEN	254
     78 #define	ARC_MAX_FORBID_LEN	256
     79 #define	ARC_MAX_LEN		508
     80 
     81 
     82 /* RFC 1051 */
     83 #define	ARCTYPE_IP_OLD		240	/* IP protocol */
     84 #define	ARCTYPE_ARP_OLD		241	/* address resolution protocol */
     85 
     86 /* RFC 1201 */
     87 #define	ARCTYPE_IP		212	/* IP protocol */
     88 #define	ARCTYPE_ARP		213	/* address resolution protocol */
     89 #define	ARCTYPE_REVARP		214	/* reverse addr resolution protocol */
     90 
     91 #define	ARCTYPE_ATALK		221	/* Appletalk */
     92 #define	ARCTYPE_BANIAN		247	/* Banyan Vines */
     93 #define	ARCTYPE_IPX		250	/* Novell IPX */
     94 
     95 #define	ARCMTU			507
     96 #define	ARCMIN			0
     97 
     98 struct	arccom {
     99 	struct 	  ifnet ac_if;		/* network-visible interface */
    100 
    101 	u_int16_t ac_seqid;		/* seq. id used by PHDS encap. */
    102 
    103 	struct ac_frag {
    104 		u_int8_t  af_maxflag;	/* from first packet */
    105 		u_int8_t  af_lastseen;	/* last split flag seen */
    106 		u_int16_t af_seqid;
    107 		struct mbuf *af_packet;
    108 	} ac_fragtab[256];		/* indexed by sender ll address */
    109 
    110 };
    111 
    112 #ifdef _KERNEL
    113 u_int8_t arcbroadcastaddr;
    114 
    115 void	arc_ifattach __P((struct ifnet *, u_int8_t));
    116 char	*arc_sprintf __P((u_int8_t *));
    117 void	arc_input __P((struct ifnet *, struct mbuf *));
    118 int	arc_output __P((struct ifnet *, struct mbuf *, struct sockaddr *,
    119 	    struct rtentry *));
    120 int	arc_isphds __P((int));
    121 #endif
    122