sys/net/if_arc.h

   1 /*      $NetBSD: if_arc.h,v 1.21 2007/12/25 23:31:26 he 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 void    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_ */