if_arp.h 5.8 KB

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  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
  13. * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  14. * Florian La Roche,
  15. * Jonathan Layes <layes@loran.com>
  16. * Arnaldo Carvalho de Melo <acme@conectiva.com.br> ARPHRD_HWX25
  17. *
  18. * This program is free software; you can redistribute it and/or
  19. * modify it under the terms of the GNU General Public License
  20. * as published by the Free Software Foundation; either version
  21. * 2 of the License, or (at your option) any later version.
  22. */
  23. #ifndef _LINUX_IF_ARP_H
  24. #define _LINUX_IF_ARP_H
  25. #include <linux/netdevice.h>
  26. /* ARP protocol HARDWARE identifiers. */
  27. #define ARPHRD_NETROM 0 /* from KA9Q: NET/ROM pseudo */
  28. #define ARPHRD_ETHER 1 /* Ethernet 10Mbps */
  29. #define ARPHRD_EETHER 2 /* Experimental Ethernet */
  30. #define ARPHRD_AX25 3 /* AX.25 Level 2 */
  31. #define ARPHRD_PRONET 4 /* PROnet token ring */
  32. #define ARPHRD_CHAOS 5 /* Chaosnet */
  33. #define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet/TR/TB */
  34. #define ARPHRD_ARCNET 7 /* ARCnet */
  35. #define ARPHRD_APPLETLK 8 /* APPLEtalk */
  36. #define ARPHRD_DLCI 15 /* Frame Relay DLCI */
  37. #define ARPHRD_ATM 19 /* ATM */
  38. #define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id) */
  39. #define ARPHRD_IEEE1394 24 /* IEEE 1394 IPv4 - RFC 2734 */
  40. #define ARPHRD_EUI64 27 /* EUI-64 */
  41. #define ARPHRD_INFINIBAND 32 /* InfiniBand */
  42. /* Dummy types for non ARP hardware */
  43. #define ARPHRD_SLIP 256
  44. #define ARPHRD_CSLIP 257
  45. #define ARPHRD_SLIP6 258
  46. #define ARPHRD_CSLIP6 259
  47. #define ARPHRD_RSRVD 260 /* Notional KISS type */
  48. #define ARPHRD_ADAPT 264
  49. #define ARPHRD_ROSE 270
  50. #define ARPHRD_X25 271 /* CCITT X.25 */
  51. #define ARPHRD_HWX25 272 /* Boards with X.25 in firmware */
  52. #define ARPHRD_PPP 512
  53. #define ARPHRD_CISCO 513 /* Cisco HDLC */
  54. #define ARPHRD_HDLC ARPHRD_CISCO
  55. #define ARPHRD_LAPB 516 /* LAPB */
  56. #define ARPHRD_DDCMP 517 /* Digital's DDCMP protocol */
  57. #define ARPHRD_RAWHDLC 518 /* Raw HDLC */
  58. #define ARPHRD_TUNNEL 768 /* IPIP tunnel */
  59. #define ARPHRD_TUNNEL6 769 /* IP6IP6 tunnel */
  60. #define ARPHRD_FRAD 770 /* Frame Relay Access Device */
  61. #define ARPHRD_SKIP 771 /* SKIP vif */
  62. #define ARPHRD_LOOPBACK 772 /* Loopback device */
  63. #define ARPHRD_LOCALTLK 773 /* Localtalk device */
  64. #define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface */
  65. #define ARPHRD_BIF 775 /* AP1000 BIF */
  66. #define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4 */
  67. #define ARPHRD_IPDDP 777 /* IP over DDP tunneller */
  68. #define ARPHRD_IPGRE 778 /* GRE over IP */
  69. #define ARPHRD_PIMREG 779 /* PIMSM register interface */
  70. #define ARPHRD_HIPPI 780 /* High Performance Parallel Interface */
  71. #define ARPHRD_ASH 781 /* Nexus 64Mbps Ash */
  72. #define ARPHRD_ECONET 782 /* Acorn Econet */
  73. #define ARPHRD_IRDA 783 /* Linux-IrDA */
  74. /* ARP works differently on different FC media .. so */
  75. #define ARPHRD_FCPP 784 /* Point to point fibrechannel */
  76. #define ARPHRD_FCAL 785 /* Fibrechannel arbitrated loop */
  77. #define ARPHRD_FCPL 786 /* Fibrechannel public loop */
  78. #define ARPHRD_FCFABRIC 787 /* Fibrechannel fabric */
  79. /* 787->799 reserved for fibrechannel media types */
  80. #define ARPHRD_IEEE802_TR 800 /* Magic type ident for TR */
  81. #define ARPHRD_IEEE80211 801 /* IEEE 802.11 */
  82. #define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header */
  83. #define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header */
  84. #define ARPHRD_VOID 0xFFFF /* Void type, nothing is known */
  85. #define ARPHRD_NONE 0xFFFE /* zero header length */
  86. /* ARP protocol opcodes. */
  87. #define ARPOP_REQUEST 1 /* ARP request */
  88. #define ARPOP_REPLY 2 /* ARP reply */
  89. #define ARPOP_RREQUEST 3 /* RARP request */
  90. #define ARPOP_RREPLY 4 /* RARP reply */
  91. #define ARPOP_InREQUEST 8 /* InARP request */
  92. #define ARPOP_InREPLY 9 /* InARP reply */
  93. #define ARPOP_NAK 10 /* (ATM)ARP NAK */
  94. /* ARP ioctl request. */
  95. struct arpreq {
  96. struct sockaddr arp_pa; /* protocol address */
  97. struct sockaddr arp_ha; /* hardware address */
  98. int arp_flags; /* flags */
  99. struct sockaddr arp_netmask; /* netmask (only for proxy arps) */
  100. char arp_dev[16];
  101. };
  102. struct arpreq_old {
  103. struct sockaddr arp_pa; /* protocol address */
  104. struct sockaddr arp_ha; /* hardware address */
  105. int arp_flags; /* flags */
  106. struct sockaddr arp_netmask; /* netmask (only for proxy arps) */
  107. };
  108. /* ARP Flag values. */
  109. #define ATF_COM 0x02 /* completed entry (ha valid) */
  110. #define ATF_PERM 0x04 /* permanent entry */
  111. #define ATF_PUBL 0x08 /* publish entry */
  112. #define ATF_USETRAILERS 0x10 /* has requested trailers */
  113. #define ATF_NETMASK 0x20 /* want to use a netmask (only
  114. for proxy entries) */
  115. #define ATF_DONTPUB 0x40 /* don't answer this addresses */
  116. /*
  117. * This structure defines an ethernet arp header.
  118. */
  119. struct arphdr
  120. {
  121. __be16 ar_hrd; /* format of hardware address */
  122. __be16 ar_pro; /* format of protocol address */
  123. unsigned char ar_hln; /* length of hardware address */
  124. unsigned char ar_pln; /* length of protocol address */
  125. __be16 ar_op; /* ARP opcode (command) */
  126. #if 0
  127. /*
  128. * Ethernet looks like this : This bit is variable sized however...
  129. */
  130. unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
  131. unsigned char ar_sip[4]; /* sender IP address */
  132. unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
  133. unsigned char ar_tip[4]; /* target IP address */
  134. #endif
  135. };
  136. #endif /* _LINUX_IF_ARP_H */