include/linux/if

/* */
   1 /*
   2  * INET         An implementation of the TCP/IP protocol suite for the LINUX
   3  *              operating system.  INET is implemented using the  BSD Socket
   4  *              interface as the means of communication with the user level.
   5  *
   6  *              Global definitions for the ARP (RFC 826) protocol.
   7  *
   8  * Version:     @(#)if_arp.h    1.0.1   04/16/93
   9  *
  10  * Authors:     Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988
  11  *              Portions taken from the KA9Q/NOS (v2.00m PA0GRI) source.
  12  *              Ross Biro, <bir7@leland.Stanford.Edu>
  13  *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  14  *              Florian La Roche.
  15  *
  16  *              This program is free software; you can redistribute it and/or
  17  *              modify it under the terms of the GNU General Public License
  18  *              as published by the Free Software Foundation; either version
  19  *              2 of the License, or (at your option) any later version.
  20  */
  21 #ifndef _LINUX_IF_ARP_H
  22 #define _LINUX_IF_ARP_H
  23 
  24 /* ARP protocol HARDWARE identifiers. */
  25 #define ARPHRD_NETROM   0               /* from KA9Q: NET/ROM pseudo    */
  26 #define ARPHRD_ETHER    1               /* Ethernet 10Mbps              */
  27 #define ARPHRD_EETHER   2               /* Experimental Ethernet        */
  28 #define ARPHRD_AX25     3               /* AX.25 Level 2                */
  29 #define ARPHRD_PRONET   4               /* PROnet token ring            */
  30 #define ARPHRD_CHAOS    5               /* Chaosnet                     */
  31 #define ARPHRD_IEEE802  6               /* IEEE 802.2 Ethernet/TR/TB    */
  32 #define ARPHRD_ARCNET   7               /* ARCnet                       */
  33 #define ARPHRD_APPLETLK 8               /* APPLEtalk                    */
  34 /* Dummy types for non ARP hardware */
  35 #define ARPHRD_SLIP     256
  36 #define ARPHRD_CSLIP    257
  37 #define ARPHRD_SLIP6    258
  38 #define ARPHRD_CSLIP6   259
  39 #define ARPHRD_RSRVD    260             /* Notional KISS type           */
  40 #define ARPHRD_ADAPT    264
  41 #define ARPHRD_PPP      512
  42 #define ARPHRD_TUNNEL   768             /* IPIP tunnel                  */
  43 #define ARPHRD_TUNNEL6  769             /* IPIP6 tunnel                 */
  44 
  45 /* ARP protocol opcodes. */
  46 #define ARPOP_REQUEST   1               /* ARP request                  */
  47 #define ARPOP_REPLY     2               /* ARP reply                    */
  48 #define ARPOP_RREQUEST  3               /* RARP request                 */
  49 #define ARPOP_RREPLY    4               /* RARP reply                   */
  50 
  51 
  52 /* ARP ioctl request. */
  53 struct arpreq {
  54   struct sockaddr       arp_pa;         /* protocol address             */
  55   struct sockaddr       arp_ha;         /* hardware address             */
  56   int                   arp_flags;      /* flags                        */
  57   struct sockaddr       arp_netmask;    /* netmask (only for proxy arps) */
  58 };
  59 
  60 /* ARP Flag values. */
  61 #define ATF_COM         0x02            /* completed entry (ha valid)   */
  62 #define ATF_PERM        0x04            /* permanent entry              */
  63 #define ATF_PUBL        0x08            /* publish entry                */
  64 #define ATF_USETRAILERS 0x10            /* has requested trailers       */
  65 #define ATF_NETMASK     0x20            /* want to use a netmask (only
  66                                            for proxy entries) */
  67 
  68 /*
  69  *      This structure defines an ethernet arp header.
  70  */
  71 
  72 struct arphdr
  73 {
  74         unsigned short  ar_hrd;         /* format of hardware address   */
  75         unsigned short  ar_pro;         /* format of protocol address   */
  76         unsigned char   ar_hln;         /* length of hardware address   */
  77         unsigned char   ar_pln;         /* length of protocol address   */
  78         unsigned short  ar_op;          /* ARP opcode (command)         */
  79 
  80 #if 0
  81          /*
  82           *      Ethernet looks like this : This bit is variable sized however...
  83           */
  84         unsigned char           ar_sha[ETH_ALEN];       /* sender hardware address      */
  85         unsigned char           ar_sip[4];              /* sender IP address            */
  86         unsigned char           ar_tha[ETH_ALEN];       /* target hardware address      */
  87         unsigned char           ar_tip[4];              /* target IP address            */
  88 #endif
  89 
  90 };
  91 
  92 #endif  /* _LINUX_IF_ARP_H */
/* */
root/include/linux/if_arp.h

INCLUDED FROM
