Home | History | Annotate | Line # | Download | only in net 
      1 /*	$NetBSD: if_arc.h,v 1.23 2017/10/23 09:22:24 msaitoh 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  * from: NetBSD: if_ether.h,v 1.10 1994/06/29 06:37:55 cgd Exp
     32  *       @(#)if_ether.h	8.1 (Berkeley) 6/10/93
     33  */
     34 
     35 #ifndef _NET_IF_ARC_H_
     36 #define _NET_IF_ARC_H_
     37 
     38 /*
     39  * Arcnet address - 1 octets
     40  * don't know who uses this.
     41  */
     42 struct arc_addr {
     43 	uint8_t  arc_addr_octet[1];
     44 } __packed;
     45 
     46 /*
     47  * Structure of a 2.5MB/s Arcnet header.
     48  * as given to interface code.
     49  */
     50 struct	arc_header {
     51 	uint8_t  arc_shost;
     52 	uint8_t  arc_dhost;
     53 	uint8_t  arc_type;
     54 	/*
     55 	 * only present for newstyle encoding with LL fragmentation.
     56 	 * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.
     57 	 */
     58 	uint8_t  arc_flag;
     59 	uint16_t arc_seqid;
     60 
     61 	/*
     62 	 * only present in exception packets (arc_flag == 0xff)
     63 	 */
     64 	uint8_t  arc_type2;	/* same as arc_type */
     65 	uint8_t  arc_flag2;	/* real flag value */
     66 	uint16_t arc_seqid2;	/* real seqid value */
     67 } __packed;
     68 
     69 #define	ARC_ADDR_LEN		1
     70 
     71 #define	ARC_HDRLEN		3
     72 #define	ARC_HDRNEWLEN		6
     73 #define	ARC_HDRNEWLEN_EXC	10
     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 ARCTYPE_INET6		0xc4	/* IPng */
     96 #define ARCTYPE_DIAGNOSE	0x80	/* as per ANSI/ATA 878.1 */
     97 
     98 #define	ARCMTU			507
     99 #define	ARCMIN			0
    100 
    101 #define ARC_PHDS_MAXMTU		60480
    102 
    103 struct	arccom {
    104 	struct 	  ifnet ac_if;		/* network-visible interface */
    105 
    106 	uint16_t ac_seqid;		/* seq. id used by PHDS encap. */
    107 
    108 	struct ac_frag {
    109 		uint8_t  af_maxflag;	/* from first packet */
    110 		uint8_t  af_lastseen;	/* last split flag seen */
    111 		uint16_t af_seqid;
    112 		struct mbuf *af_packet;
    113 	} ac_fragtab[256];		/* indexed by sender ll address */
    114 
    115 };
    116 
    117 #ifdef _KERNEL
    118 extern uint8_t arcbroadcastaddr;
    119 extern int arc_ipmtu;	/* XXX new ip only, no RFC 1051! */
    120 
    121 int	arc_ifattach(struct ifnet *, uint8_t);
    122 char	*arc_sprintf(uint8_t *);
    123 int	arc_isphds(uint8_t);
    124 #endif
    125 
    126 #endif /* !_NET_IF_ARC_H_ */
    127