package/broadcom-wl/src/driver/proto/bcmarp.h

   1 /*
   2  * Copyright 2007, Broadcom Corporation
   3  * All Rights Reserved.
   4  *
   5  * This is UNPUBLISHED PROPRIETARY SOURCE CODE of Broadcom Corporation;
   6  * the contents of this file may not be disclosed to third parties, copied
   7  * or duplicated in any form, in whole or in part, without the prior
   8  * written permission of Broadcom Corporation.
   9  *
  10  * Fundamental constants relating to ARP Protocol
  11  *
  12  * $Id$
  13  */
  14
  15 #ifndef _bcmarp_h_
  16 #define _bcmarp_h_
  17
  18 /* enable structure packing */
  19 #if defined(__GNUC__)
  20 #define PACKED  __attribute__((packed))
  21 #else
  22 #pragma pack(1)
  23 #define PACKED
  24 #endif
  25
  26 #define ARP_OPC_OFFSET          6               /* option code offset */
  27 #define ARP_SRC_ETH_OFFSET      8               /* src h/w address offset */
  28 #define ARP_SRC_IP_OFFSET       14              /* src IP address offset */
  29 #define ARP_TGT_ETH_OFFSET      18              /* target h/w address offset */
  30 #define ARP_TGT_IP_OFFSET       24              /* target IP address offset */
  31
  32 #define ARP_OPC_REQUEST         1               /* ARP request */
  33 #define ARP_OPC_REPLY           2               /* ARP reply */
  34
  35 #define ARP_DATA_LEN            28              /* ARP data length */
  36
  37 struct bcmarp {
  38         uint16  htype;                          /* Header type (1 = ethernet) */
  39         uint16  ptype;                          /* Protocol type (0x800 = IP) */
  40         uint8   hlen;                           /* Hardware address length (Eth = 6) */
  41         uint8   plen;                           /* Protocol address length (IP = 4) */
  42         uint16  oper;                           /* ARP_OPC_... */
  43         uint8   src_eth[ETHER_ADDR_LEN];        /* Source hardware address */
  44         uint8   src_ip[IPV4_ADDR_LEN];          /* Source protocol address (not aligned) */
  45         uint8   dst_eth[ETHER_ADDR_LEN];        /* Destination hardware address */
  46         uint8   dst_ip[IPV4_ADDR_LEN];          /* Destination protocol address */
  47 } PACKED;
  48
  49 /* Ethernet header + Arp message */
  50 struct bcmetharp {
  51         struct ether_header     eh;
  52         struct bcmarp   arp;
  53 } PACKED;
  54
  55 #undef PACKED
  56 #if !defined(__GNUC__)
  57 #pragma pack()
  58 #endif
  59
  60 #endif  /* !defined(_bcmarp_h_) */