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tcp: add bytes not sent to SCM_TIMESTAMPING_OPT_STATS

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Add TCP_NLA_BYTES_NOTSENT to SCM_TIMESTAMPING_OPT_STATS that reports
bytes in the write queue but not sent. This is the same metric as
what is exported with tcp_info.tcpi_notsent_bytes.

Signed-off-by: Yousuk Seung <ysseung@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yousuk Seung 2020-03-09 13:16:40 -07:00 • committed by David S. Miller
parent 34a568a244
commit e08ab0b377
2 changed files with 4 additions and 0 deletions
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1
include/uapi/linux/tcp.h
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@ -312,6 +312,7 @@ enum {
TCP_NLA_REORD_SEEN, /* reordering events seen */
TCP_NLA_SRTT, /* smoothed RTT in usecs */
TCP_NLA_TIMEOUT_REHASH, /* Timeout-triggered rehash attempts */
TCP_NLA_BYTES_NOTSENT, /* Bytes in write queue not yet sent */
};
/* for TCP_MD5SIG socket option */