1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2/* tcp_metrics.h - TCP Metrics Interface */
3
4#ifndef _LINUX_TCP_METRICS_H
5#define _LINUX_TCP_METRICS_H
6
7#include <linux/types.h>
8
9/* NETLINK_GENERIC related info
10 */
11#define TCP_METRICS_GENL_NAME		"tcp_metrics"
12#define TCP_METRICS_GENL_VERSION	0x1
13
14enum tcp_metric_index {
15	TCP_METRIC_RTT,		/* in ms units */
16	TCP_METRIC_RTTVAR,	/* in ms units */
17	TCP_METRIC_SSTHRESH,
18	TCP_METRIC_CWND,
19	TCP_METRIC_REORDERING,
20
21	TCP_METRIC_RTT_US,	/* in usec units */
22	TCP_METRIC_RTTVAR_US,	/* in usec units */
23
24	/* Always last.  */
25	__TCP_METRIC_MAX,
26};
27
28#define TCP_METRIC_MAX	(__TCP_METRIC_MAX - 1)
29
30enum {
31	TCP_METRICS_ATTR_UNSPEC,
32	TCP_METRICS_ATTR_ADDR_IPV4,		/* u32 */
33	TCP_METRICS_ATTR_ADDR_IPV6,		/* binary */
34	TCP_METRICS_ATTR_AGE,			/* msecs */
35	TCP_METRICS_ATTR_TW_TSVAL,		/* u32, raw, rcv tsval */
36	TCP_METRICS_ATTR_TW_TS_STAMP,		/* s32, sec age */
37	TCP_METRICS_ATTR_VALS,			/* nested +1, u32 */
38	TCP_METRICS_ATTR_FOPEN_MSS,		/* u16 */
39	TCP_METRICS_ATTR_FOPEN_SYN_DROPS,	/* u16, count of drops */
40	TCP_METRICS_ATTR_FOPEN_SYN_DROP_TS,	/* msecs age */
41	TCP_METRICS_ATTR_FOPEN_COOKIE,		/* binary */
42	TCP_METRICS_ATTR_SADDR_IPV4,		/* u32 */
43	TCP_METRICS_ATTR_SADDR_IPV6,		/* binary */
44	TCP_METRICS_ATTR_PAD,
45
46	__TCP_METRICS_ATTR_MAX,
47};
48
49#define TCP_METRICS_ATTR_MAX	(__TCP_METRICS_ATTR_MAX - 1)
50
51enum {
52	TCP_METRICS_CMD_UNSPEC,
53	TCP_METRICS_CMD_GET,
54	TCP_METRICS_CMD_DEL,
55
56	__TCP_METRICS_CMD_MAX,
57};
58
59#define TCP_METRICS_CMD_MAX	(__TCP_METRICS_CMD_MAX - 1)
60
61#endif /* _LINUX_TCP_METRICS_H */
62