include/uapi/linux/tcp_metrics.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /* tcp_metrics.h - TCP Metrics Interface */
   3
   4 #ifndef _UAPI_LINUX_TCP_METRICS_H
   5 #define _UAPI_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
  14 enum 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  */
  33 enum {
  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
  46 enum {
  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
  67 enum {
  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 /* _UAPI_LINUX_TCP_METRICS_H */