sys/net/if_arc.h

   1 /*      $NetBSD: if_arc.h,v 1.13 1999/11/19 20:41:19 thorpej Exp $      */
   2 /* $FreeBSD: src/sys/net/if_arc.h,v 1.2.2.3 2003/01/28 11:19:05 fjoe Exp $ */
   3 /* $DragonFly: src/sys/net/Attic/if_arc.h,v 1.6 2006/05/20 02:42:08 dillon Exp $ */
   4
   5 /*
   6  * Copyright (c) 1982, 1986, 1993
   7  *      The Regents of the University of California.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed by the University of
  20  *      California, Berkeley and its contributors.
  21  * 4. Neither the name of the University nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  *
  37  * from: NetBSD: if_ether.h,v 1.10 1994/06/29 06:37:55 cgd Exp
  38  *       @(#)if_ether.h 8.1 (Berkeley) 6/10/93
  39  */
  40
  41 #ifndef _NET_IF_ARC_H_
  42 #define _NET_IF_ARC_H_
  43
  44 #ifndef _SYS_TYPES_H_
  45 #include <sys/types.h>
  46 #endif
  47 #ifndef _NET_IF_VAR_H_
  48 #include <net/if_var.h>
  49 #endif
  50
  51 /*
  52  * Arcnet address - 1 octets
  53  * don't know who uses this.
  54  */
  55 struct arc_addr {
  56         u_int8_t  arc_addr_octet[1];
  57 } __attribute__((__packed__));
  58
  59 /*
  60  * Structure of a 2.5MB/s Arcnet header.
  61  * as given to interface code.
  62  */
  63 struct  arc_header {
  64         u_int8_t  arc_shost;
  65         u_int8_t  arc_dhost;
  66         u_int8_t  arc_type;
  67         /*
  68          * only present for newstyle encoding with LL fragmentation.
  69          * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.
  70          */
  71         u_int8_t  arc_flag;
  72         u_int16_t arc_seqid;
  73
  74         /*
  75          * only present in exception packets (arc_flag == 0xff)
  76          */
  77         u_int8_t  arc_type2;    /* same as arc_type */
  78         u_int8_t  arc_flag2;    /* real flag value */
  79         u_int16_t arc_seqid2;   /* real seqid value */
  80 } __attribute__((__packed__));
  81
  82 #define ARC_ADDR_LEN            1
  83
  84 #define ARC_HDRLEN              3
  85 #define ARC_HDRNEWLEN           6
  86 #define ARC_HDRNEWLEN_EXC       10
  87
  88 /* these lengths are data link layer length - 2 * ARC_ADDR_LEN */
  89 #define ARC_MIN_LEN             1
  90 #define ARC_MIN_FORBID_LEN      254
  91 #define ARC_MAX_FORBID_LEN      256
  92 #define ARC_MAX_LEN             508
  93 #define ARC_MAX_DATA            504
  94
  95 /* RFC 1051 */
  96 #define ARCTYPE_IP_OLD          240     /* IP protocol */
  97 #define ARCTYPE_ARP_OLD         241     /* address resolution protocol */
  98
  99 /* RFC 1201 */
 100 #define ARCTYPE_IP              212     /* IP protocol */
 101 #define ARCTYPE_ARP             213     /* address resolution protocol */
 102 #define ARCTYPE_REVARP          214     /* reverse addr resolution protocol */
 103
 104 #define ARCTYPE_ATALK           221     /* Appletalk */
 105 #define ARCTYPE_BANIAN          247     /* Banyan Vines */
 106 #define ARCTYPE_IPX             250     /* Novell IPX */
 107
 108 #define ARCTYPE_INET6           0xc4    /* IPng */
 109 #define ARCTYPE_DIAGNOSE        0x80    /* as per ANSI/ATA 878.1 */
 110
 111 #define ARCMTU                  507
 112 #define ARCMIN                  0
 113
 114 #define ARC_PHDS_MAXMTU         60480
 115
 116 struct  arccom {
 117         struct    ifnet ac_if;          /* network-visible interface */
 118
 119         u_int16_t ac_seqid;             /* seq. id used by PHDS encap. */
 120
 121         u_int8_t  arc_shost;
 122         u_int8_t  arc_dhost;
 123         u_int8_t  arc_type;
 124
 125         u_int8_t  dummy0;
 126         u_int16_t dummy1;
 127         int sflag, fsflag, rsflag;
 128         struct mbuf *curr_frag;
 129
 130         struct ac_frag {
 131                 u_int8_t  af_maxflag;   /* from first packet */
 132                 u_int8_t  af_lastseen;  /* last split flag seen */
 133                 u_int16_t af_seqid;
 134                 struct mbuf *af_packet;
 135         } ac_fragtab[256];              /* indexed by sender ll address */
 136 };
 137
 138 #ifdef _KERNEL
 139 extern int arc_ipmtu;   /* XXX new ip only, no RFC 1051! */
 140 struct lwkt_serialize;
 141
 142 void    arc_ifattach (struct ifnet *, u_int8_t, struct lwkt_serialize *);
 143 void    arc_ifdetach (struct ifnet *);
 144 void    arc_storelladdr (struct ifnet *, u_int8_t);
 145 int     arc_isphds (int);
 146 int     arc_ioctl (struct ifnet *, int, caddr_t);
 147
 148 void            arc_frag_init (struct ifnet *);
 149 struct mbuf *   arc_frag_next (struct ifnet *);
 150 #endif
 151
 152 #endif /* _NET_IF_ARC_H_ */