netdev - Re: [net-next-2.6 PATCH 1/3] ixgbe: set max desc to prevent total RSC packet size of 64K

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Message-Id: <20090518.151001.16071533.davem@davemloft.net>
Date:	Mon, 18 May 2009 15:10:01 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jeffrey.t.kirsher@...el.com
Cc:	netdev@...r.kernel.org, alexander.h.duyck@...el.com
Subject: Re: [net-next-2.6 PATCH 1/3] ixgbe: set max desc to prevent total
 RSC packet size of 64K

From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Date: Sun, 17 May 2009 23:57:47 -0700

> From: Alexander Duyck <alexander.h.duyck@...el.com>
> 
> The performance of hardware RSC is greatly reduced if the total for max rsc
> descriptors multiplied by the buffer size is greater than 65535.  To
> prevent this we need to adjust the max rsc descriptors appropriately.
> 
> Signed-off-by: Alexander Duyck <alexander.h.duyck@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>

Applied.
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