if_link.h

#ifndef _LINUX_IF_LINK_H
#define _LINUX_IF_LINK_H

#include <linux/netlink.h>

/* The struct should be in sync with struct net_device_stats */
struct rtnl_link_stats
{
	__u32	rx_packets;		/* total packets received	*/
	__u32	tx_packets;		/* total packets transmitted	*/
	__u32	rx_bytes;		/* total bytes received 	*/
	__u32	tx_bytes;		/* total bytes transmitted	*/
	__u32	rx_errors;		/* bad packets received		*/
	__u32	tx_errors;		/* packet transmit problems	*/
	__u32	rx_dropped;		/* no space in linux buffers	*/
	__u32	tx_dropped;		/* no space available in linux	*/
	__u32	multicast;		/* multicast packets received	*/
	__u32	collisions;

	/* detailed rx_errors: */
	__u32	rx_length_errors;
	__u32	rx_over_errors;		/* receiver ring buff overflow	*/
	__u32	rx_crc_errors;		/* recved pkt with crc error	*/
	__u32	rx_frame_errors;	/* recv'd frame alignment error */
	__u32	rx_fifo_errors;		/* recv'r fifo overrun		*/
	__u32	rx_missed_errors;	/* receiver missed packet	*/

	/* detailed tx_errors */
	__u32	tx_aborted_errors;
	__u32	tx_carrier_errors;
	__u32	tx_fifo_errors;
	__u32	tx_heartbeat_errors;
	__u32	tx_window_errors;

	/* for cslip etc */
	__u32	rx_compressed;
	__u32	tx_compressed;
};

/* The struct should be in sync with struct ifmap */
struct rtnl_link_ifmap
{
	__u64	mem_start;
	__u64	mem_end;
	__u64	base_addr;
	__u16	irq;
	__u8	dma;
	__u8	port;
};

enum
{
	IFLA_UNSPEC,
	IFLA_ADDRESS,
	IFLA_BROADCAST,
	IFLA_IFNAME,
	IFLA_MTU,
	IFLA_LINK,
	IFLA_QDISC,
	IFLA_STATS,
	IFLA_COST,
#define IFLA_COST IFLA_COST
	IFLA_PRIORITY,
#define IFLA_PRIORITY IFLA_PRIORITY
	IFLA_MASTER,
#define IFLA_MASTER IFLA_MASTER
	IFLA_WIRELESS,		/* Wireless Extension event - see wireless.h */
#define IFLA_WIRELESS IFLA_WIRELESS
	IFLA_PROTINFO,		/* Protocol specific information for a link */
#define IFLA_PROTINFO IFLA_PROTINFO
	IFLA_TXQLEN,
#define IFLA_TXQLEN IFLA_TXQLEN
	IFLA_MAP,
#define IFLA_MAP IFLA_MAP
	IFLA_WEIGHT,
#define IFLA_WEIGHT IFLA_WEIGHT
	IFLA_OPERSTATE,
	IFLA_LINKMODE,
	__IFLA_MAX
};


#define IFLA_MAX (__IFLA_MAX - 1)

/* backwards compatibility for userspace */
#ifndef __KERNEL__
#define IFLA_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg))))
#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg))
#endif

/* ifi_flags.

   IFF_* flags.

   The only change is:
   IFF_LOOPBACK, IFF_BROADCAST and IFF_POINTOPOINT are
   more not changeable by user. They describe link media
   characteristics and set by device driver.

   Comments:
   - Combination IFF_BROADCAST|IFF_POINTOPOINT is invalid
   - If neither of these three flags are set;
     the interface is NBMA.

   - IFF_MULTICAST does not mean anything special:
   multicasts can be used on all not-NBMA links.
   IFF_MULTICAST means that this media uses special encapsulation
   for multicast frames. Apparently, all IFF_POINTOPOINT and
   IFF_BROADCAST devices are able to use multicasts too.
 */

/* IFLA_LINK.
   For usual devices it is equal ifi_index.
   If it is a "virtual interface" (f.e. tunnel), ifi_link
   can point to real physical interface (f.e. for bandwidth calculations),
   or maybe 0, what means, that real media is unknown (usual
   for IPIP tunnels, when route to endpoint is allowed to change)
 */

/* Subtype attributes for IFLA_PROTINFO */
enum
{
	IFLA_INET6_UNSPEC,
	IFLA_INET6_FLAGS,	/* link flags			*/
	IFLA_INET6_CONF,	/* sysctl parameters		*/
	IFLA_INET6_STATS,	/* statistics			*/
	IFLA_INET6_MCAST,	/* MC things. What of them?	*/
	IFLA_INET6_CACHEINFO,	/* time values and max reasm size */
	IFLA_INET6_ICMP6STATS,	/* statistics (icmpv6)		*/
	__IFLA_INET6_MAX
};

#define IFLA_INET6_MAX	(__IFLA_INET6_MAX - 1)

struct ifla_cacheinfo
{
	__u32	max_reasm_len;
	__u32	tstamp;		/* ipv6InterfaceTable updated timestamp */
	__u32	reachable_time;
	__u32	retrans_time;
};

#endif /* _LINUX_IF_LINK_H */