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  *              Jonathan Layes <layes@loran.com>
  16  *
  17  *              This program is free software; you can redistribute it and/or
  18  *              modify it under the terms of the GNU General Public License
  19  *              as published by the Free Software Foundation; either version
  20  *              2 of the License, or (at your option) any later version.
  21  */
  22 #ifndef _LINUX_IF_ARP_H
  23 #define _LINUX_IF_ARP_H
  24 
  25 /* ARP protocol HARDWARE identifiers. */
  26 #define ARPHRD_NETROM   0               /* from KA9Q: NET/ROM pseudo    */
  27 #define ARPHRD_ETHER    1               /* Ethernet 10Mbps              */
  28 #define ARPHRD_EETHER   2               /* Experimental Ethernet        */
  29 #define ARPHRD_AX25     3               /* AX.25 Level 2                */
  30 #define ARPHRD_PRONET   4               /* PROnet token ring            */
  31 #define ARPHRD_CHAOS    5               /* Chaosnet                     */
  32 #define ARPHRD_IEEE802  6               /* IEEE 802.2 Ethernet/TR/TB    */
  33 #define ARPHRD_ARCNET   7               /* ARCnet                       */
  34 #define ARPHRD_APPLETLK 8               /* APPLEtalk                    */
  35 #define ARPHRD_DLCI     15              /* Frame Relay DLCI             */
  36 
  37 /* Dummy types for non ARP hardware */
  38 #define ARPHRD_SLIP     256
  39 #define ARPHRD_CSLIP    257
  40 #define ARPHRD_SLIP6    258
  41 #define ARPHRD_CSLIP6   259
  42 #define ARPHRD_RSRVD    260             /* Notional KISS type           */
  43 #define ARPHRD_ADAPT    264
  44 #define ARPHRD_PPP      512
  45 
  46 #define ARPHRD_TUNNEL   768             /* IPIP tunnel                  */
  47 #define ARPHRD_TUNNEL6  769             /* IPIP6 tunnel                 */
  48 #define ARPHRD_FRAD     770             /* Frame Relay Access Device    */
  49 #define ARPHRD_SKIP     771             /* SKIP vif                     */
  50 #define ARPHRD_LOOPBACK 772             /* Loopback device              */
  51 #define ARPHRD_LOCALTLK 773             /* Localtalk device             */
  52 
  53 /* ARP protocol opcodes. */
  54 #define ARPOP_REQUEST   1               /* ARP request                  */
  55 #define ARPOP_REPLY     2               /* ARP reply                    */
  56 #define ARPOP_RREQUEST  3               /* RARP request                 */
  57 #define ARPOP_RREPLY    4               /* RARP reply                   */
  58 
  59 
  60 /* ARP ioctl request. */
  61 struct arpreq {
  62   struct sockaddr       arp_pa;         /* protocol address             */
  63   struct sockaddr       arp_ha;         /* hardware address             */
  64   int                   arp_flags;      /* flags                        */
  65   struct sockaddr       arp_netmask;    /* netmask (only for proxy arps) */
  66   char                  arp_dev[16];
  67 };
  68 
  69 struct arpreq_old {
  70   struct sockaddr       arp_pa;         /* protocol address             */
  71   struct sockaddr       arp_ha;         /* hardware address             */
  72   int                   arp_flags;      /* flags                        */
  73   struct sockaddr       arp_netmask;    /* netmask (only for proxy arps) */
  74 };
  75 
  76 /* ARP Flag values. */
  77 #define ATF_COM         0x02            /* completed entry (ha valid)   */
  78 #define ATF_PERM        0x04            /* permanent entry              */
  79 #define ATF_PUBL        0x08            /* publish entry                */
  80 #define ATF_USETRAILERS 0x10            /* has requested trailers       */
  81 #define ATF_NETMASK     0x20            /* want to use a netmask (only
  82                                            for proxy entries) */
  83 
  84 /*
  85  *      This structure defines an ethernet arp header.
  86  */
  87 
  88 struct arphdr
  89 {
  90         unsigned short  ar_hrd;         /* format of hardware address   */
  91         unsigned short  ar_pro;         /* format of protocol address   */
  92         unsigned char   ar_hln;         /* length of hardware address   */
  93         unsigned char   ar_pln;         /* length of protocol address   */
  94         unsigned short  ar_op;          /* ARP opcode (command)         */
  95 
  96 #if 0
  97          /*
  98           *      Ethernet looks like this : This bit is variable sized however...
  99           */
 100         unsigned char           ar_sha[ETH_ALEN];       /* sender hardware address      */
 101         unsigned char           ar_sip[4];              /* sender IP address            */
 102         unsigned char           ar_tha[ETH_ALEN];       /* target hardware address      */
 103         unsigned char           ar_tip[4];              /* target IP address            */
 104 #endif
 105 
 106 };
 107 
 108 /* Support for the user space arp daemon, arpd */
 109 
 110 #define ARPD_UPDATE     0x01
 111 #define ARPD_LOOKUP     0x02
 112 
 113 struct arpd_request
 114 {
 115         unsigned short  req;                    /* request type */
 116         __u32           ip;                     /* ip address of entry */
 117         __u32           mask;                   /* netmask - used for proxy */
 118         unsigned char   ha[MAX_ADDR_LEN];       /* Hardware address */
 119         unsigned long   last_used;              /* For expiry */
 120         unsigned long   last_updated;           /* For expiry */
 121         unsigned int    flags;                  /* Control status */
 122         struct device   *dev;                   /* Device entry is tied to */
 123         int             loc;                    /* Debugging call location */
 124 };
 125 
 126 #endif  /* _LINUX_IF_ARP_H */
/* */
root/include/linux/if_arp.h

INCLUDED FROM
