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/*
* Copyright 2007, Broadcom Corporation
* All Rights Reserved.
*
* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Broadcom Corporation;
* the contents of this file may not be disclosed to third parties, copied
* or duplicated in any form, in whole or in part, without the prior
* written permission of Broadcom Corporation.
*
* Fundamental constants relating to ARP Protocol
*
* $Id$
*/
#ifndef _bcmarp_h_
#define _bcmarp_h_
/* enable structure packing */
#if defined(__GNUC__)
#define PACKED __attribute__((packed))
#else
#pragma pack(1)
#define PACKED
#endif
#define ARP_OPC_OFFSET 6 /* option code offset */
#define ARP_SRC_ETH_OFFSET 8 /* src h/w address offset */
#define ARP_SRC_IP_OFFSET 14 /* src IP address offset */
#define ARP_TGT_ETH_OFFSET 18 /* target h/w address offset */
#define ARP_TGT_IP_OFFSET 24 /* target IP address offset */
#define ARP_OPC_REQUEST 1 /* ARP request */
#define ARP_OPC_REPLY 2 /* ARP reply */
#define ARP_DATA_LEN 28 /* ARP data length */
struct bcmarp {
uint16 htype; /* Header type (1 = ethernet) */
uint16 ptype; /* Protocol type (0x800 = IP) */
uint8 hlen; /* Hardware address length (Eth = 6) */
uint8 plen; /* Protocol address length (IP = 4) */
uint16 oper; /* ARP_OPC_... */
uint8 src_eth[ETHER_ADDR_LEN]; /* Source hardware address */
uint8 src_ip[IPV4_ADDR_LEN]; /* Source protocol address (not aligned) */
uint8 dst_eth[ETHER_ADDR_LEN]; /* Destination hardware address */
uint8 dst_ip[IPV4_ADDR_LEN]; /* Destination protocol address */
} PACKED;
/* Ethernet header + Arp message */
struct bcmetharp {
struct ether_header eh;
struct bcmarp arp;
} PACKED;
#undef PACKED
#if !defined(__GNUC__)
#pragma pack()
#endif
#endif /* !defined(_bcmarp_h_) */
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