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Message-ID: <1412162238.16704.50.camel@edumazet-glaptop2.roam.corp.google.com>
Date: Wed, 01 Oct 2014 04:17:18 -0700
From: Eric Dumazet <eric.dumazet@...il.com>
To: Stephen Hemminger <stephen@...workplumber.org>
Cc: netdev <netdev@...r.kernel.org>
Subject: [PATCH iproute2] ss: add more tcp socket diagnostics
From: Eric Dumazet <edumazet@...gle.com>
Display 4 additional tcp socket info fields :
backoff : exponential backoff
lastsnd : time in milli second since last send
lastrcv : time in milli second since last receive
lastack : time in milli second since last acknowledgement
$ ss -ti dst :22
State Recv-Q Send-Q Local Address:Port
Peer Address:Port
ESTAB 0 0 172.16.5.1:58470
172.17.131.143:ssh
cubic wscale:7,7 rto:228 rtt:30/20 ato:40 mss:1256 cwnd:6 ssthresh:4
send 2.0Mbps lastsnd:3480 lastrcv:3464 lastack:3464 rcv_rtt:81.5
rcv_space:87812
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
misc/ss.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/misc/ss.c b/misc/ss.c
index c847954..2420b51 100644
--- a/misc/ss.c
+++ b/misc/ss.c
@@ -1554,6 +1554,8 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
info->tcpi_rcv_wscale);
if (info->tcpi_rto && info->tcpi_rto != 3000000)
printf(" rto:%g", (double)info->tcpi_rto/1000);
+ if (info->tcpi_backoff)
+ printf(" backoff:%u", info->tcpi_backoff);
if (info->tcpi_rtt)
printf(" rtt:%g/%g", (double)info->tcpi_rtt/1000,
(double)info->tcpi_rttvar/1000);
@@ -1583,6 +1585,15 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
/ rtt));
}
+ if (info->tcpi_last_data_sent)
+ printf(" lastsnd:%u", info->tcpi_last_data_sent);
+
+ if (info->tcpi_last_data_recv)
+ printf(" lastrcv:%u", info->tcpi_last_data_recv);
+
+ if (info->tcpi_last_ack_recv)
+ printf(" lastack:%u", info->tcpi_last_ack_recv);
+
if (info->tcpi_pacing_rate &&
info->tcpi_pacing_rate != ~0ULL) {
printf(" pacing_rate %sbps",
--
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