tcp_metrics.h

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/* tcp_metrics.h - TCP Metrics Interface */

#ifndef _LINUX_TCP_METRICS_H
#define _LINUX_TCP_METRICS_H

#include <linux/types.h>

/* NETLINK_GENERIC related info
 */
#define TCP_METRICS_GENL_NAME       "tcp_metrics"
#define TCP_METRICS_GENL_VERSION    0x1

enum tcp_metric_index {
    TCP_METRIC_RTT,
    TCP_METRIC_RTTVAR,
    TCP_METRIC_SSTHRESH,
    TCP_METRIC_CWND,
    TCP_METRIC_REORDERING,

    /* Always last.  */
    __TCP_METRIC_MAX,
};

#define TCP_METRIC_MAX  (__TCP_METRIC_MAX - 1)

enum {
    TCP_METRICS_ATTR_UNSPEC,
    TCP_METRICS_ATTR_ADDR_IPV4,     /* u32 */
    TCP_METRICS_ATTR_ADDR_IPV6,     /* binary */
    TCP_METRICS_ATTR_AGE,           /* msecs */
    TCP_METRICS_ATTR_TW_TSVAL,      /* u32, raw, rcv tsval */
    TCP_METRICS_ATTR_TW_TS_STAMP,       /* s32, sec age */
    TCP_METRICS_ATTR_VALS,          /* nested +1, u32 */
    TCP_METRICS_ATTR_FOPEN_MSS,     /* u16 */
    TCP_METRICS_ATTR_FOPEN_SYN_DROPS,   /* u16, count of drops */
    TCP_METRICS_ATTR_FOPEN_SYN_DROP_TS, /* msecs age */
    TCP_METRICS_ATTR_FOPEN_COOKIE,      /* binary */

    __TCP_METRICS_ATTR_MAX,
};

#define TCP_METRICS_ATTR_MAX    (__TCP_METRICS_ATTR_MAX - 1)

enum {
    TCP_METRICS_CMD_UNSPEC,
    TCP_METRICS_CMD_GET,
    TCP_METRICS_CMD_DEL,

    __TCP_METRICS_CMD_MAX,
};

#define TCP_METRICS_CMD_MAX (__TCP_METRICS_CMD_MAX - 1)

#endif /* _LINUX_TCP_METRICS_H */