sys/net/if_arc.h

   1 /*      $NetBSD: if_arc.h,v 1.13 1999/11/19 20:41:19 thorpej Exp $      */
   2 /* $FreeBSD$ */
   3
   4 /*-
   5  * Copyright (c) 1982, 1986, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 4. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * from: NetBSD: if_ether.h,v 1.10 1994/06/29 06:37:55 cgd Exp
  33  *       @(#)if_ether.h 8.1 (Berkeley) 6/10/93
  34  */
  35
  36 #ifndef _NET_IF_ARC_H_
  37 #define _NET_IF_ARC_H_
  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 } __packed;
  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 } __packed;
  69
  70 #define ARC_ADDR_LEN            1
  71
  72 #define ARC_HDRLEN              3
  73 #define ARC_HDRNEWLEN           6
  74 #define ARC_HDRNEWLEN_EXC       10
  75
  76 /* these lengths are data link layer length - 2 * ARC_ADDR_LEN */
  77 #define ARC_MIN_LEN             1
  78 #define ARC_MIN_FORBID_LEN      254
  79 #define ARC_MAX_FORBID_LEN      256
  80 #define ARC_MAX_LEN             508
  81 #define ARC_MAX_DATA            504
  82
  83 /* RFC 1051 */
  84 #define ARCTYPE_IP_OLD          240     /* IP protocol */
  85 #define ARCTYPE_ARP_OLD         241     /* address resolution protocol */
  86
  87 /* RFC 1201 */
  88 #define ARCTYPE_IP              212     /* IP protocol */
  89 #define ARCTYPE_ARP             213     /* address resolution protocol */
  90 #define ARCTYPE_REVARP          214     /* reverse addr resolution protocol */
  91
  92 #define ARCTYPE_ATALK           221     /* Appletalk */
  93 #define ARCTYPE_BANIAN          247     /* Banyan Vines */
  94 #define ARCTYPE_IPX             250     /* Novell IPX */
  95
  96 #define ARCTYPE_INET6           0xc4    /* IPng */
  97 #define ARCTYPE_DIAGNOSE        0x80    /* as per ANSI/ATA 878.1 */
  98
  99 #define ARCMTU                  507
 100 #define ARCMIN                  0
 101
 102 #define ARC_PHDS_MAXMTU         60480
 103
 104 struct  arccom {
 105         struct    ifnet *ac_ifp;        /* network-visible interface */
 106
 107         u_int16_t ac_seqid;             /* seq. id used by PHDS encap. */
 108
 109         u_int8_t  arc_shost;
 110         u_int8_t  arc_dhost;
 111         u_int8_t  arc_type;
 112
 113         u_int8_t  dummy0;
 114         u_int16_t dummy1;
 115         int sflag, fsflag, rsflag;
 116         struct mbuf *curr_frag;
 117
 118         struct ac_frag {
 119                 u_int8_t  af_maxflag;   /* from first packet */
 120                 u_int8_t  af_lastseen;  /* last split flag seen */
 121                 u_int16_t af_seqid;
 122                 struct mbuf *af_packet;
 123         } ac_fragtab[256];              /* indexed by sender ll address */
 124 };
 125
 126 #ifdef _KERNEL
 127 extern u_int8_t arcbroadcastaddr;
 128 extern int arc_ipmtu;   /* XXX new ip only, no RFC 1051! */
 129
 130 void    arc_ifattach(struct ifnet *, u_int8_t);
 131 void    arc_ifdetach(struct ifnet *);
 132 void    arc_storelladdr(struct ifnet *, u_int8_t);
 133 int     arc_isphds(u_int8_t);
 134 void    arc_input(struct ifnet *, struct mbuf *);
 135 int     arc_output(struct ifnet *, struct mbuf *,
 136             const struct sockaddr *, struct route *);
 137 int     arc_ioctl(struct ifnet *, u_long, caddr_t);
 138
 139 void            arc_frag_init(struct ifnet *);
 140 struct mbuf *   arc_frag_next(struct ifnet *);
 141 #endif
 142
 143 #endif /* _NET_IF_ARC_H_ */