From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: Benjamin LaHaise <bcrl@kvack.org>
Cc: John Heffner <jheffner@psc.edu>,
David Miller <davem@davemloft.net>,
netdev@vger.kernel.org
Subject: Re: [PATCH] TCP FIN gets dropped prematurely, results in ack storm
Date: Tue, 1 May 2007 22:07:08 +0400 [thread overview]
Message-ID: <20070501180708.GA1882@2ka.mipt.ru> (raw)
In-Reply-To: <20070501180405.GE1751@kvack.org>
On Tue, May 01, 2007 at 02:04:05PM -0400, Benjamin LaHaise (bcrl@kvack.org) wrote:
> I know it's a bug, and I'm trying to fix it, but that doesn't change the
> fact that A) the system is already deployed and B) Linux is not retransmitting
> the FIN, which (from Linux's point of view) remains unacknowledged by the
> other side. The patch might be wrong, but the goal of fixing the behaviour
> isn't.
It does retransmit fin:
10:23:32.298477 IP (tos 0x0, ttl 255, id 39972, offset 0, flags [DF],
proto: TCP (6), length: 52) 192.168.1.1.59192 > 192.168.2.2.bgp: F,
cksum 0x5558 (correct), 1562038077:1562038077(0) ack 2624175183 win 183
<nop,nop,timestamp 1549356119 781231>
10:23:32.599809 IP (tos 0x0, ttl 255, id 39973, offset 0, flags [DF],
proto: TCP (6), length: 52) 192.168.1.1.59192 > 192.168.2.2.bgp: F,
cksum 0x542b (correct), 1562038077:1562038077(0) ack 2624175183 win 183
<nop,nop,timestamp 1549356420 781231>
10:23:33.201722 IP (tos 0x0, ttl 255, id 40802, offset 0, flags [DF],
proto: TCP (6), length: 52) 192.168.1.1.59192 > 192.168.2.2.bgp: F,
cksum 0x51d1 (correct), 1562038077:1562038077(0) ack 2624175183 win 183
<nop,nop,timestamp 1549357022 781231>
10:23:34.405537 IP (tos 0x0, ttl 255, id 40914, offset 0, flags [DF],
proto: TCP (6), length: 52) 192.168.1.1.59192 > 192.168.2.2.bgp: F,
cksum 0x4d1d (correct), 1562038077:1562038077(0) ack 2624175183 win 183
<nop,nop,timestamp 1549358226 781231>
--
Evgeniy Polyakov
next prev parent reply other threads:[~2007-05-01 18:07 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-01 15:13 [PATCH] TCP FIN gets dropped prematurely, results in ack storm Benjamin LaHaise
2007-05-01 16:20 ` Evgeniy Polyakov
2007-05-01 16:49 ` Benjamin LaHaise
2007-05-01 17:41 ` Evgeniy Polyakov
2007-05-01 17:53 ` Benjamin LaHaise
2007-05-01 18:03 ` John Heffner
2007-05-01 19:19 ` Benjamin LaHaise
2007-05-01 20:24 ` David Miller
2007-05-01 17:57 ` Evgeniy Polyakov
2007-05-01 18:02 ` Evgeniy Polyakov
2007-05-01 17:54 ` John Heffner
2007-05-01 18:04 ` Benjamin LaHaise
2007-05-01 18:07 ` Evgeniy Polyakov [this message]
2007-05-01 18:20 ` Evgeniy Polyakov
2007-05-01 18:25 ` Evgeniy Polyakov
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