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| author |   Yuchung Cheng <ycheng@google.com> | 2017-01-27 16:24:38 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-01-29 19:17:23 -0500 |
| commit | 7e98102f489775d8c000884fca8a0d995ea688a9 (patch) | |
| tree | 40a40dc7f485407ab82f3851f8a50ba8337525c6 /include | |
| parent | Merge branch 'qcom-emac-misc' (diff) | |
| download | linux-dev-7e98102f489775d8c000884fca8a0d995ea688a9.tar.xz linux-dev-7e98102f489775d8c000884fca8a0d995ea688a9.zip | |
tcp: record pkts sent and retransmistted
Add two stats in SCM_TIMESTAMPING_OPT_STATS:
TCP_NLA_DATA_SEGS_OUT: total data packets sent including retransmission
TCP_NLA_TOTAL_RETRANS: total data packets retransmitted
The names are picked to be consistent with corresponding fields in
TCP_INFO. This allows applications that are using the timestamping
API to measure latency stats to also retrive retransmission rate
of application write.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h index 6ff35eb48d10..38a2b07afdff 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -227,6 +227,8 @@ enum { TCP_NLA_BUSY, /* Time (usec) busy sending data */ TCP_NLA_RWND_LIMITED, /* Time (usec) limited by receive window */ TCP_NLA_SNDBUF_LIMITED, /* Time (usec) limited by send buffer */ + TCP_NLA_DATA_SEGS_OUT, /* Data pkts sent including retransmission */ + TCP_NLA_TOTAL_RETRANS, /* Data pkts retransmitted */ }; /* for TCP_MD5SIG socket option */ |