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| author | Wei Wang <weiwan@google.com> | 2018-07-31 17:46:22 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-08-01 09:56:10 -0700 |
| commit | fb31c9b9f6c85b1bad569ecedbde78d9e37cd87b (patch) | |
| tree | 7568903b4ab7b5784169b51d342ffb28ec6e31e2 /include/uapi/linux/tcp.h | |
| parent | ba113c3aa79a7f941ac162d05a3620bdc985c58d (diff) | |
| download | lwn-fb31c9b9f6c85b1bad569ecedbde78d9e37cd87b.tar.gz lwn-fb31c9b9f6c85b1bad569ecedbde78d9e37cd87b.zip | |
tcp: add data bytes retransmitted stats
Introduce a new TCP stat to record the number of bytes retransmitted
(RFC4898 tcpEStatsPerfOctetsRetrans) 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/uapi/linux/tcp.h')
| -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 1c70ed287c3b..c31f5100b744 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -237,6 +237,7 @@ struct tcp_info { __u32 tcpi_delivered_ce; __u64 tcpi_bytes_sent; /* RFC4898 tcpEStatsPerfHCDataOctetsOut */ + __u64 tcpi_bytes_retrans; /* RFC4898 tcpEStatsPerfOctetsRetrans */ }; /* netlink attributes types for SCM_TIMESTAMPING_OPT_STATS */ @@ -260,6 +261,7 @@ enum { TCP_NLA_DELIVERED, /* Data pkts delivered incl. out-of-order */ TCP_NLA_DELIVERED_CE, /* Like above but only ones w/ CE marks */ TCP_NLA_BYTES_SENT, /* Data bytes sent including retransmission */ + TCP_NLA_BYTES_RETRANS, /* Data bytes retransmitted */ }; /* for TCP_MD5SIG socket option */ |