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Date: Thu, 27 Jun 2013 13:12:13 +0800
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Subject: Re:
From: tingwei liu <tingw.liu@gmail.com>
To: linux-kernel@vger.kernel.org, Jiri Slaby <jslaby@suse.cz>,
        Linus Torvalds <linus971@gmail.com>,
        Alan Cox <alan@lxorguk.ukuu.org.uk>,
        Eric Dumazet <eric.dumazet@gmail.com>
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Hi， dears

      I have found many RetransSegs of tcp by /proc/net/snmp, but I
can't capture these packet on local system by tcpdump.
      What could be the reason? Droped by qdisc level or device
driver? How to confirm that?

      I also find patch "[PATCH] tcp: reflect SYN queue_mapping into
SYNACK packets" provided by Eirc, how to confirm this?

 Thanks very much!