netdev - GRE with GRO very slow when forwarding starting with 3.14.24

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Message-ID: <2340533.MickblD7NF@h2o.as.studentenwerk.mhn.de>
Date:	Mon, 24 Nov 2014 17:13:52 +0100
From:	Wolfgang Walter <linux@...m.de>
To:	netdev@...r.kernel.org
Cc:	Stable Kernel <stable@...r.kernel.org>
Subject: GRE with GRO very slow when forwarding starting with 3.14.24

Hello,

starting with 3.14.24 GRE with GRO on is very slow. To be more specific:

yyyy <--> GRO_endpoint <-_> .... <--> |eth0<->GRO-endpoint | eth1 |<-> xxxx

routing (IPv4) between xxxx and yyyy is very slow when GRO is enabled on eth0 
and/or eth1 starting with stable kernel 3.14.24

Regards,
-- 
Wolfgang Walter
Studentenwerk München
Anstalt des öffentlichen Rechts
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