/*
 **************************************************************************
 *
 * Boot-ROM-Code to load an operating system across a TCP/IP network.
 *
 * Module:  hw/eth.h
 * Purpose: General definitions for ethernet hardware
 * Entries: None
 *
 **************************************************************************
 *
 * Copyright (C) 1998-2003 Gero Kuhlmann <gero@gkminix.han.de>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id: eth.h,v 1.4 2003/01/25 23:29:40 gkminix Exp $
 */

#ifndef _HW_ETH_H
#define _HW_ETH_H

/*
 **************************************************************************
 *
 * Magic constants for ethernet
 */
#define ETH_ALEN	6			 /* Bytes in ethernet addr  */
#define ETH_FLEN	4			 /* Bytes in FCS            */
#define ETH_HLEN	14			 /* Total bytes in header   */
#define ETH_DATA_MIN	46			 /* Min. bytes in payload   */
#define ETH_DATA_MAX	1500			 /* Max. bytes in payload   */
#define ETH_FRAME_MIN	(ETH_DATA_MIN + ETH_HLEN)  /* Min. bytes w/o FCS    */
#define ETH_FRAME_MAX	(ETH_DATA_MAX + ETH_HLEN)  /* Max. bytes w/o FCS    */
#define ETH_BUF_SIZE	(ETH_FRAME_MAX + ETH_FLEN) /* Buffer size with FCS  */


#endif				/* _HW_ETH_H */