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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/* 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, /* in ms units */
TCP_METRIC_RTTVAR, /* in ms units */
TCP_METRIC_SSTHRESH,
TCP_METRIC_CWND,
TCP_METRIC_REORDERING,
TCP_METRIC_RTT_US, /* in usec units */
TCP_METRIC_RTTVAR_US, /* in usec units */
/* Always last. */
__TCP_METRIC_MAX,
};
#define TCP_METRIC_MAX (__TCP_METRIC_MAX - 1)
/* Re-define enum tcp_metric_index, again, using the values carried
* as netlink attribute types.
*/
enum {
TCP_METRICS_A_METRICS_RTT = 1,
TCP_METRICS_A_METRICS_RTTVAR,
TCP_METRICS_A_METRICS_SSTHRESH,
TCP_METRICS_A_METRICS_CWND,
TCP_METRICS_A_METRICS_REODERING,
TCP_METRICS_A_METRICS_RTT_US,
TCP_METRICS_A_METRICS_RTTVAR_US,
__TCP_METRICS_A_METRICS_MAX
};
#define TCP_METRICS_A_METRICS_MAX (__TCP_METRICS_A_METRICS_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_SADDR_IPV4, /* u32 */
TCP_METRICS_ATTR_SADDR_IPV6, /* binary */
TCP_METRICS_ATTR_PAD,
__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 */