diff options
| author | Francis Yan <francisyyan@gmail.com> | 2016-11-27 23:07:17 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-30 10:04:25 -0500 |
| commit | efd90174167530c67a54273fd5d8369c87f9bd32 (patch) | |
| tree | 8d5a14b3b4c63b8b919e815610f3a90c3c12e4aa /include | |
| parent | b0f71bd3e190df827d25d7f19bf09037567f14b7 (diff) | |
| download | op-kernel-dev-efd90174167530c67a54273fd5d8369c87f9bd32.zip op-kernel-dev-efd90174167530c67a54273fd5d8369c87f9bd32.tar.gz | |
tcp: export sender limits chronographs to TCP_INFO
This patch exports all the sender chronograph measurements collected
in the previous patches to TCP_INFO interface. Note that busy time
exported includes all the other sending limits (rwnd-limited,
sndbuf-limited). Internally the time unit is jiffy but externally
the measurements are in microseconds for future extensions.
Signed-off-by: Francis Yan <francisyyan@gmail.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/tcp.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h index 73ac0db..2863b66 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -214,6 +214,10 @@ struct tcp_info { __u32 tcpi_data_segs_out; /* RFC4898 tcpEStatsDataSegsOut */ __u64 tcpi_delivery_rate; + + __u64 tcpi_busy_time; /* Time (usec) busy sending data */ + __u64 tcpi_rwnd_limited; /* Time (usec) limited by receive window */ + __u64 tcpi_sndbuf_limited; /* Time (usec) limited by send buffer */ }; /* for TCP_MD5SIG socket option */ |
