netdev - Re: [net-2.6 PATCH] ixgbe: Don't allow user buffer count to exceed 256

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Date:	Fri, 26 Mar 2010 11:58:20 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jeffrey.t.kirsher@...el.com
Cc:	netdev@...r.kernel.org, gospo@...hat.com, robert.w.love@...el.com,
	yi.zou@...el.com, frank_1.zhang@...el.com
Subject: Re: [net-2.6 PATCH] ixgbe: Don't allow user buffer count to exceed
 256

From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Date: Wed, 24 Mar 2010 13:02:04 -0700

> From: Robert Love <robert.w.love@...el.com>
> 
> If the user buffer count was 256 the shift would place a 1
> in the offset region leading to errors. It also overwrites
> the uers buffer list. This patch makes sure that at most
> 256 user buffers are allowed for DDP and the buffer count
> is masked properly such that it doesn't overwrite the offset
> when shifting the bits.
> 
> Signed-off-by: Robert Love <robert.w.love@...el.com>
> Signed-off-by: Yi Zou <yi.zou@...el.com>
> Signed-off-by: Frank Zhang <frank_1.zhang@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>

Applied.
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