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   5  * This is UNPUBLISHED PROPRIETARY SOURCE CODE of Broadcom Corporation;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  */
  13
  14 #ifndef _bcmarp_h_
  15 #define _bcmarp_h_
  16
  17 /* enable structure packing */
  18 #if defined(__GNUC__)
  19 #define PACKED  __attribute__((packed))
  20 #else
  21 #pragma pack(1)
  22 #define PACKED
  23 #endif
  24
  25 #define ARP_OPC_OFFSET          6               /* option code offset */
  26 #define ARP_SRC_ETH_OFFSET      8               /* src h/w address offset */
  27 #define ARP_SRC_IP_OFFSET       14              /* src IP address offset */
  28 #define ARP_TGT_ETH_OFFSET      18              /* target h/w address offset */
  29 #define ARP_TGT_IP_OFFSET       24              /* target IP address offset */
  30
  31 #define ARP_OPC_REQUEST         1               /* ARP request */
  32 #define ARP_OPC_REPLY           2               /* ARP reply */
  33
  34 #define ARP_DATA_LEN            28              /* ARP data length */
  35
  36 struct bcmarp {
  37         uint16  htype;                          /* Header type (1 = ethernet) */
  38         uint16  ptype;                          /* Protocol type (0x800 = IP) */
  39         uint8   hlen;                           /* Hardware address length (Eth = 6) */
  40         uint8   plen;                           /* Protocol address length (IP = 4) */
  41         uint16  oper;                           /* ARP_OPC_... */
  42         uint8   src_eth[ETHER_ADDR_LEN];        /* Source hardware address */
  43         uint8   src_ip[IPV4_ADDR_LEN];          /* Source protocol address (not aligned) */
  44         uint8   dst_eth[ETHER_ADDR_LEN];        /* Destination hardware address */
  45         uint8   dst_ip[IPV4_ADDR_LEN];          /* Destination protocol address */
  46 } PACKED;
  47
  48 /* Ethernet header + Arp message */
  49 struct bcmetharp {
  50         struct ether_header     eh;
  51         struct bcmarp   arp;
  52 } PACKED;
  53
  54 #undef PACKED
  55 #if !defined(__GNUC__)
  56 #pragma pack()
  57 #endif
  58
  59 #endif  /* !defined(_bcmarp_h_) */