if_ether.h

这是一个符合posix.13 pse51的实时内核

#ifndef __IF_ETHER__
#define __IF_ETHER__

#include <linux/compatib.h>

/*
 *	IEEE 802.3 Ethernet magic constants.  The frame sizes omit the preamble
 *	and FCS/CRC (frame check sequence). 
 */

#define ETH_ALEN	6		/* Octets in one ethernet addr	 */
#define ETH_HLEN	14		/* Total octets in header.	 */
#define ETH_ZLEN	60		/* Min. octets in frame sans FCS */
#define ETH_DATA_LEN	1500		/* Max. octets in payload	 */
#define ETH_FRAME_LEN	1514		/* Max. octets in frame sans FCS */

/*
 *	Ethernet statistics collection data. 
 */
 
struct enet_statistics
{
	int	rx_packets;		/* total packets received	*/
	int	tx_packets;		/* total packets transmitted	*/
	int	rx_errors;		/* bad packets received		*/
	int	tx_errors;		/* packet transmit problems	*/
	int	rx_dropped;		/* no space in linux buffers	*/
	int	tx_dropped;		/* no space available in linux	*/
	int	multicast;		/* multicast packets received	*/
	int	collisions;

	/* detailed rx_errors: */
	int	rx_length_errors;
	int	rx_over_errors;		/* receiver ring buff overflow	*/
	int	rx_crc_errors;		/* recved pkt with crc error	*/
	int	rx_frame_errors;	/* recv'd frame alignment error */
	int	rx_fifo_errors;		/* recv'r fifo overrun		*/
	int	rx_missed_errors;	/* receiver missed packet	*/

	/* detailed tx_errors */
	int	tx_aborted_errors;
	int	tx_carrier_errors;
	int	tx_fifo_errors;
	int	tx_heartbeat_errors;
	int	tx_window_errors;
};

#endif