source: edk_user_repository/WARP/sw_services/WARPxilnet_v3_00_a/src/xilnet_eth.h

////////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2004 Xilinx, Inc.  All rights reserved. 
// 
// Xilinx, Inc. 
// XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A 
// COURTESY TO YOU.  BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS 
// ONE POSSIBLE   IMPLEMENTATION OF THIS FEATURE, APPLICATION OR 
// STANDARD, XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION 
// IS FREE FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE 
// FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION. 
// XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO 
// THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO 
// ANY WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE 
// FROM CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY 
// AND FITNESS FOR A PARTICULAR PURPOSE. 
// 
// File   : eth.h
// Date   : 2002, March 20.
// Author : Sathya Thammanur
// Company: Xilinx
// Group  : Emerging Software Technologies
//
// Summary:
// Header file for Ethernet layer
//
// $Id: eth.h,v 1.2.8.6 2005/11/15 23:41:10 salindac Exp $
//
////////////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////////////
// see copyright.txt for Rice University/Mango Communications modifications
////////////////////////////////////////////////////////////////////////////////

#ifndef _ETH_H
#define _ETH_H

#ifdef __cplusplus
extern "C" {
#endif

#include <xilnet_config.h>
#include <xilnet_ip.h>

#define ETH_ADDR_LEN           6   /* len of eth addr */    
#define ETH_HDR_LEN         14   /* eth hdr len */  
#define ETH_MIN_FRAME_LEN     60   /* Min Eth Frame Payload */  

#define ETH_MAX_FRAME_LEN     1500 /* Max Eth Frame Payload */  
#define ETH_FRAME_LEN         1514 /* Max Eth Frame Size */ 


/* MAC address used */
#ifdef _CONFIG_EMACLITE_
extern unsigned int MYMAC_BASEADDR;
#else
#ifdef _CONFIG_TEMAC_
extern void* FIFO_INST;
extern void* DMA_CENTRAL_INST;
#endif
#endif

/*
 * Protocol vals in eth hdr 
 */

#define ETH_PROTO_IP    0x0800      /* IP  packet   */
#define ETH_PROTO_ARP   0x0806      /* ARP packet   */



/*
 * Ethernet Header
 */
 
struct xilnet_eth_hdr {
  unsigned char dest_addr[ETH_ADDR_LEN];  /* destination eth addr   */
  unsigned char src_addr[ETH_ADDR_LEN];   /* source eth addr    */
  unsigned short type;                /* protocol type */
};


/*
 * HW Addr Table
 *
 */

#define HW_ADDR_TBL_ENTRIES     5
#define HW_ADDR_ENTRY_IS_TRUE   1
#define HW_ADDR_ENTRY_IS_FALSE  0
#define HW_ADDR_TBL_MAXAGE      2

struct xilnet_hw_addr_table 
{
   unsigned char ip_addr[IP_VERSION];
   unsigned char hw_addr[ETH_ADDR_LEN];
   unsigned char flag;
   unsigned int age;
};

extern struct xilnet_hw_addr_table xilnet_hw_tbl[HW_ADDR_TBL_ENTRIES];

#ifdef __cplusplus
}
#endif

#endif  /* _ETH_H */