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
30/* Re-define enum tcp_metric_index, again, using the values carried
31 * as netlink attribute types.
32 */
33enum {
34 TCP_METRICS_A_METRICS_RTT = 1,
35 TCP_METRICS_A_METRICS_RTTVAR,
36 TCP_METRICS_A_METRICS_SSTHRESH,
37 TCP_METRICS_A_METRICS_CWND,
38 TCP_METRICS_A_METRICS_REODERING,
39 TCP_METRICS_A_METRICS_RTT_US,
40 TCP_METRICS_A_METRICS_RTTVAR_US,
41
42 __TCP_METRICS_A_METRICS_MAX
43};
44#define TCP_METRICS_A_METRICS_MAX (__TCP_METRICS_A_METRICS_MAX - 1)
45
46enum {
47 TCP_METRICS_ATTR_UNSPEC,
48 TCP_METRICS_ATTR_ADDR_IPV4, /* u32 */
49 TCP_METRICS_ATTR_ADDR_IPV6, /* binary */
50 TCP_METRICS_ATTR_AGE, /* msecs */
51 TCP_METRICS_ATTR_TW_TSVAL, /* u32, raw, rcv tsval */
52 TCP_METRICS_ATTR_TW_TS_STAMP, /* s32, sec age */
53 TCP_METRICS_ATTR_VALS, /* nested +1, u32 */
54 TCP_METRICS_ATTR_FOPEN_MSS, /* u16 */
55 TCP_METRICS_ATTR_FOPEN_SYN_DROPS, /* u16, count of drops */
56 TCP_METRICS_ATTR_FOPEN_SYN_DROP_TS, /* msecs age */
57 TCP_METRICS_ATTR_FOPEN_COOKIE, /* binary */
58 TCP_METRICS_ATTR_SADDR_IPV4, /* u32 */
59 TCP_METRICS_ATTR_SADDR_IPV6, /* binary */
60 TCP_METRICS_ATTR_PAD,
61
62 __TCP_METRICS_ATTR_MAX,
63};
64
65#define TCP_METRICS_ATTR_MAX (__TCP_METRICS_ATTR_MAX - 1)
66
67enum {
68 TCP_METRICS_CMD_UNSPEC,
69 TCP_METRICS_CMD_GET,
70 TCP_METRICS_CMD_DEL,
71
72 __TCP_METRICS_CMD_MAX,
73};
74
75#define TCP_METRICS_CMD_MAX (__TCP_METRICS_CMD_MAX - 1)
76
77#endif /* _LINUX_TCP_METRICS_H */