interface.h

一个学习SNMP项目：tmoerlan.

struct ifmap 
{
    unsigned long   mem_start;
    unsigned long   mem_end;
    unsigned short  base_addr; 
    unsigned char   irq;                  
    unsigned char   dma; 
    unsigned char   port; 
};

struct user_net_device_stats
{
  unsigned long	rx_packets;	/* total packets received	*/
  unsigned long	tx_packets;	/* total packets transmitted	*/
  unsigned long	rx_bytes;	/* total bytes received 	*/
  unsigned long	tx_bytes;	/* total bytes transmitted	*/
  unsigned long	rx_errors;	/* bad packets received		*/
  unsigned long	tx_errors;	/* packet transmit problems	*/
  unsigned long	rx_dropped;	/* no space in linux buffers	*/
  unsigned long	tx_dropped;	/* no space available in linux	*/
  unsigned long	rx_multicast;	/* multicast packets received	*/
  unsigned long rx_compressed;
  unsigned long tx_compressed;
  unsigned long	collisions;

  /* detailed rx_errors: */
  unsigned long	rx_length_errors;
  unsigned long	rx_over_errors;	/* receiver ring buff overflow	*/
  unsigned long	rx_crc_errors;	/* recved pkt with crc error	*/
  unsigned long	rx_frame_errors; /* recv'd frame alignment error */
  unsigned long	rx_fifo_errors;	/* recv'r fifo overrun		*/
  unsigned long	rx_missed_errors; /* receiver missed packet	*/
  /* detailed tx_errors */
  unsigned long	tx_aborted_errors;
  unsigned long	tx_carrier_errors;
  unsigned long	tx_fifo_errors;
  unsigned long	tx_heartbeat_errors;
  unsigned long	tx_window_errors;
};

struct interface {
  char			name[IFNAMSIZ];		/* interface name	 */
  short			type;			/* if type		 */
  short			flags;			/* various flags	 */
  int			metric;			/* routing metric	 */
  int			mtu;			/* MTU value		 */
  int			tx_queue_len;		/* transmit queue length */
  struct ifmap		map;			/* hardware setup	 */
  struct sockaddr	addr;			/* IP address		 */
  struct sockaddr	dstaddr;		/* P-P IP address	 */
  struct sockaddr	broadaddr;		/* IP broadcast address	 */
  struct sockaddr	netmask;		/* IP network mask	 */
  struct sockaddr	ipxaddr_bb;		/* IPX network address   */
  struct sockaddr	ipxaddr_sn;		/* IPX network address   */
  struct sockaddr	ipxaddr_e3;		/* IPX network address   */
  struct sockaddr	ipxaddr_e2;		/* IPX network address   */
  struct sockaddr	ddpaddr;		/* Appletalk DDP address */
  struct sockaddr	ecaddr;			/* Econet address	 */
  int			has_ip;
  int			has_ipx_bb;
  int			has_ipx_sn;
  int			has_ipx_e3;
  int			has_ipx_e2;
  int			has_ax25;
  int			has_ddp;
  int			has_econet;
  char			hwaddr[32];		/* HW address		 */
  struct user_net_device_stats stats;		/* statistics		 */
};

extern int procnetdev_vsn;

extern int if_fetch(char *ifname, struct interface *ife);

/* Check for supported features */

#if defined(SIOCSIFTXQLEN) && defined(ifr_qlen)
#define HAVE_TXQUEUELEN
#endif