diff options
| author | Mubashir Adnan Qureshi <mubashirq@google.com> | 2022-10-26 16:51:15 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-10-28 12:47:42 +0300 |
| commit | 71fc704768f601ed3fa36310822a5e03f310f781 (patch) | |
| tree | a6b1ae601b9d5ef8bfd0a520407754330b43c903 /include | |
| parent | 29c1c44646aec5d5134f2365259a84becc1ee7d3 (diff) | |
| download | linux-71fc704768f601ed3fa36310822a5e03f310f781.tar.xz | |
tcp: add rcv_wnd and plb_rehash to TCP_INFO
rcv_wnd can be useful to diagnose TCP performance where receiver window
becomes the bottleneck. rehash reports the PLB and timeout triggered
rehash attempts by the TCP connection.
Signed-off-by: Mubashir Adnan Qureshi <mubashirq@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/tcp.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h index c9abe86eda5f..879eeb0a084b 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -284,6 +284,11 @@ struct tcp_info { __u32 tcpi_snd_wnd; /* peer's advertised receive window after * scaling (bytes) */ + __u32 tcpi_rcv_wnd; /* local advertised receive window after + * scaling (bytes) + */ + + __u32 tcpi_rehash; /* PLB or timeout triggered rehash attempts */ }; /* netlink attributes types for SCM_TIMESTAMPING_OPT_STATS */ |