netdev - Re: "NIG timer max" messages from bnx2x

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Date:	Thu, 3 Dec 2009 09:47:22 +0200
From:	"Eilon Greenstein" <eilong@...adcom.com>
To:	"Tore Anderson" <tore.anderson@...pill-linpro.com>
cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"Benjamin Li" <benli@...adcom.com>
Subject: Re: "NIG timer max" messages from bnx2x

On Wed, 2009-12-02 at 23:36 -0800, Tore Anderson wrote:
> However I'm still a bit confused on why this is triggering the "NIG
> timer max" message on the Linux blade.  It would have made perfect sense
> to me for the bnx2x driver/NIC to stop transmitting outbound frames if
> it was the recipient of an inbound pause frame flood, but tcpdump does
> not show any such frames being received.  Yet it stalls all outbound
> traffic.  Any idea why?
> 
The pause frames are processed in the HW and therefore not visible to
tcpdump. You should be able to see the pause counter increases in
"ethtool -S".

Regards,
Eilon


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