netdev - Re: [PATCH net] bnx2x: really disable TPA if 'disable

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Message-Id: <20150427.134323.156569796484222010.davem@davemloft.net>
Date:	Mon, 27 Apr 2015 13:43:23 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	mschmidt@...hat.com
Cc:	netdev@...r.kernel.org, Dmitry.Kravkov@...gic.com,
	Yuval.Mintz@...gic.com, Ariel.Elior@...gic.com
Subject: Re: [PATCH net] bnx2x: really disable TPA if 'disable_tpa' option
 is set

From: Michal Schmidt <mschmidt@...hat.com>
Date: Mon, 27 Apr 2015 17:20:38 +0200

> bnx2x's 'disable_tpa=1' module option is not respected properly and TPA
> (transparent packet aggregation) remains enabled. Even though the
> module option causes LRO to be disabled, TPA is enabled in GRO mode.
> 
> Additionally, disabling GRO via ethtool then has no effect. One can
> still observe tpa_* statistics increase and large packets being received
> in tcpdump.
> 
> The bug was an unintended consequence of commit aebf6244cd39 "bnx2x: Be
> more forgiving toward SW GRO".
> 
> Fix it by following the bp->disable_tpa flag when initializing fp's.
> 
> Signed-off-by: Michal Schmidt <mschmidt@...hat.com>

Applied, thanks.
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