From: Damian Lukowski <damian@tvk.rwth-aachen.de>
To: Netdev <netdev@vger.kernel.org>
Subject: [PATCH 0/3][v2] tcp: fix ICMP-RTO war
Date: Fri, 29 Jan 2010 23:15:51 +0100 [thread overview]
Message-ID: <4B635E17.406@tvk.rwth-aachen.de> (raw)
This patches fix the current RTO calculation routine, when
srtt and rttvar are zero, yielding an RTO of zero
Under some circumstances, TCPs srtt and rttvar are zero,
yielding a calculated RTO of zero.
This is particularly unfortunate for ICMP based RTO recalculation
as introduced in f1ecd5d9e736660 (Revert Backoff [v3]: Revert RTO
on ICMP destination unreachable), as it results in RTO retransmission
flooding.
Thanks to Ilpo Jarvinen for providing debug patches and to
Denys Fedoryshchenko for reporting and testing.
Signed-off-by: Damian Lukowski <damian@tvk.rwth-aachen.de>
next reply other threads:[~2010-01-29 22:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-29 22:15 Damian Lukowski [this message]
2010-02-01 7:33 ` [PATCH 0/3][v2] tcp: fix ICMP-RTO war David Miller
2010-02-08 12:34 ` Damian Lukowski
2010-02-08 21:58 ` Damian Lukowski
2010-02-09 12:37 ` Ilpo Järvinen
2010-02-09 22:29 ` Damian Lukowski
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