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| author | Wei Wang <weiwan@google.com> | 2018-07-31 17:46:23 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-08-01 09:56:10 -0700 |
| commit | 7e10b6554ff2ce7f86d5d3eec3af5db8db482caa (patch) | |
| tree | c0c8a9dff5449d56f2ff9adf24ab0618e06957aa /include/linux/tcp.h | |
| parent | fb31c9b9f6c85b1bad569ecedbde78d9e37cd87b (diff) | |
| download | linux-stable-7e10b6554ff2ce7f86d5d3eec3af5db8db482caa.tar.gz linux-stable-7e10b6554ff2ce7f86d5d3eec3af5db8db482caa.tar.bz2 linux-stable-7e10b6554ff2ce7f86d5d3eec3af5db8db482caa.zip | |
tcp: add dsack blocks received stats
Introduce a new TCP stat to record the number of DSACK blocks received
(RFC4989 tcpEStatsStackDSACKDups) and expose it in both tcp_info
(TCP_INFO) and opt_stats (SOF_TIMESTAMPING_OPT_STATS).
Signed-off-by: Wei Wang <weiwan@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/tcp.h')
| -rw-r--r-- | include/linux/tcp.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h index fb67f9a51b95..da6281c549a5 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -188,6 +188,9 @@ struct tcp_sock { * sum(delta(snd_una)), or how many bytes * were acked. */ + u32 dsack_dups; /* RFC4898 tcpEStatsStackDSACKDups + * total number of DSACK blocks received + */ u32 snd_una; /* First byte we want an ack for */ u32 snd_sml; /* Last byte of the most recently transmitted small packet */ u32 rcv_tstamp; /* timestamp of last received ACK (for keepalives) */ |