From e8bd8fca6773ef49390269bd467bf940a0841ccf Mon Sep 17 00:00:00 2001 From: Yousuk Seung Date: Thu, 15 Nov 2018 16:44:12 -0800 Subject: tcp: add SRTT to SCM_TIMESTAMPING_OPT_STATS Add TCP_NLA_SRTT to SCM_TIMESTAMPING_OPT_STATS that reports the smoothed round trip time in microseconds (tcp_sock.srtt_us >> 3). Signed-off-by: Yousuk Seung Signed-off-by: Eric Dumazet Acked-by: Soheil Hassas Yeganeh Acked-by: Neal Cardwell Acked-by: Yuchung Cheng Signed-off-by: David S. Miller --- include/uapi/linux/tcp.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/uapi') diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h index e02d31986ff9..8bb6cc5f3235 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -266,6 +266,7 @@ enum { TCP_NLA_BYTES_RETRANS, /* Data bytes retransmitted */ TCP_NLA_DSACK_DUPS, /* DSACK blocks received */ TCP_NLA_REORD_SEEN, /* reordering events seen */ + TCP_NLA_SRTT, /* smoothed RTT in usecs */ }; /* for TCP_MD5SIG socket option */ -- cgit