linux-kernel - Re: [PATCH 2.6.32 2/3] net: Fix ks8851 snl transmit problem

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Message-Id: <20091203.160318.62214993.davem@davemloft.net>
Date:	Thu, 03 Dec 2009 16:03:18 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	Tristram.Ha@...rel.Com
Cc:	ben@...tec.co.uk, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2.6.32 2/3] net: Fix ks8851 snl transmit problem

From: "Ha, Tristram" <Tristram.Ha@...rel.Com>
Date: Thu, 3 Dec 2009 13:17:48 -0800

> This fixes a transmit problem of the ks8851 snl network driver.  Under heavy TCP traffic the device will stop transmitting.  Turning off the transmit interrupt avoids this issue.  A new workqueue was implemented to replace the functionality of the transmit interrupt processing.
> 
> Signed-off-by: Tristram Ha <Tristram.Ha@...rel.com>

Please describe why the TX interrupt facility cannot be used.
You probably have a race condition or similar, have you tried
to see if there is some issue like that?

This workqueue is going to make performance terrible, at best.
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