The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net/if_arc.h

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    1 /*      $NetBSD: if_arc.h,v 1.13 1999/11/19 20:41:19 thorpej Exp $      */
    2 /* $FreeBSD: releng/5.1/sys/net/if_arc.h 109771 2003-01-24 01:32:20Z fjoe $ */
    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  * 3. All advertising materials mentioning features or use of this software
   17  *    must display the following acknowledgement:
   18  *      This product includes software developed by the University of
   19  *      California, Berkeley and its contributors.
   20  * 4. Neither the name of the University nor the names of its contributors
   21  *    may be used to endorse or promote products derived from this software
   22  *    without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   34  * SUCH DAMAGE.
   35  *
   36  * from: NetBSD: if_ether.h,v 1.10 1994/06/29 06:37:55 cgd Exp
   37  *       @(#)if_ether.h 8.1 (Berkeley) 6/10/93
   38  */
   39 
   40 #ifndef _NET_IF_ARC_H_
   41 #define _NET_IF_ARC_H_
   42 
   43 /*
   44  * Arcnet address - 1 octets
   45  * don't know who uses this.
   46  */
   47 struct arc_addr {
   48         u_int8_t  arc_addr_octet[1];
   49 } __packed;
   50 
   51 /*
   52  * Structure of a 2.5MB/s Arcnet header.
   53  * as given to interface code.
   54  */
   55 struct  arc_header {
   56         u_int8_t  arc_shost;
   57         u_int8_t  arc_dhost;
   58         u_int8_t  arc_type;
   59         /*
   60          * only present for newstyle encoding with LL fragmentation.
   61          * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.
   62          */
   63         u_int8_t  arc_flag;
   64         u_int16_t arc_seqid;
   65 
   66         /*
   67          * only present in exception packets (arc_flag == 0xff)
   68          */
   69         u_int8_t  arc_type2;    /* same as arc_type */
   70         u_int8_t  arc_flag2;    /* real flag value */
   71         u_int16_t arc_seqid2;   /* real seqid value */
   72 } __packed;
   73 
   74 #define ARC_ADDR_LEN            1
   75 
   76 #define ARC_HDRLEN              3
   77 #define ARC_HDRNEWLEN           6
   78 #define ARC_HDRNEWLEN_EXC       10
   79 
   80 /* these lengths are data link layer length - 2 * ARC_ADDR_LEN */
   81 #define ARC_MIN_LEN             1
   82 #define ARC_MIN_FORBID_LEN      254
   83 #define ARC_MAX_FORBID_LEN      256
   84 #define ARC_MAX_LEN             508
   85 #define ARC_MAX_DATA            504
   86 
   87 /* RFC 1051 */
   88 #define ARCTYPE_IP_OLD          240     /* IP protocol */
   89 #define ARCTYPE_ARP_OLD         241     /* address resolution protocol */
   90 
   91 /* RFC 1201 */
   92 #define ARCTYPE_IP              212     /* IP protocol */
   93 #define ARCTYPE_ARP             213     /* address resolution protocol */
   94 #define ARCTYPE_REVARP          214     /* reverse addr resolution protocol */
   95 
   96 #define ARCTYPE_ATALK           221     /* Appletalk */
   97 #define ARCTYPE_BANIAN          247     /* Banyan Vines */
   98 #define ARCTYPE_IPX             250     /* Novell IPX */
   99 
  100 #define ARCTYPE_INET6           0xc4    /* IPng */
  101 #define ARCTYPE_DIAGNOSE        0x80    /* as per ANSI/ATA 878.1 */
  102 
  103 #define ARCMTU                  507
  104 #define ARCMIN                  0
  105 
  106 #define ARC_PHDS_MAXMTU         60480
  107 
  108 struct  arccom {
  109         struct    ifnet ac_if;          /* network-visible interface */
  110 
  111         u_int16_t ac_seqid;             /* seq. id used by PHDS encap. */
  112 
  113         u_int8_t  arc_shost;
  114         u_int8_t  arc_dhost;
  115         u_int8_t  arc_type;
  116 
  117         u_int8_t  dummy0;
  118         u_int16_t dummy1;
  119         int sflag, fsflag, rsflag;
  120         struct mbuf *curr_frag;
  121 
  122         struct ac_frag {
  123                 u_int8_t  af_maxflag;   /* from first packet */
  124                 u_int8_t  af_lastseen;  /* last split flag seen */
  125                 u_int16_t af_seqid;
  126                 struct mbuf *af_packet;
  127         } ac_fragtab[256];              /* indexed by sender ll address */
  128 };
  129 
  130 #ifdef _KERNEL
  131 extern u_int8_t arcbroadcastaddr;
  132 extern int arc_ipmtu;   /* XXX new ip only, no RFC 1051! */
  133 
  134 void    arc_ifattach(struct ifnet *, u_int8_t);
  135 void    arc_ifdetach(struct ifnet *);
  136 void    arc_storelladdr(struct ifnet *, u_int8_t);
  137 int     arc_isphds(int);
  138 void    arc_input(struct ifnet *, struct mbuf *);
  139 int     arc_output(struct ifnet *, struct mbuf *,
  140             struct sockaddr *, struct rtentry *);
  141 int     arc_ioctl(struct ifnet *, int, caddr_t);
  142 
  143 void            arc_frag_init(struct ifnet *);
  144 struct mbuf *   arc_frag_next(struct ifnet *);
  145 #endif
  146 
  147 #endif /* _NET_IF_ARC_H_ */

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