netdev - Re: [net-next-2.6 PATCH] e1000: allow option to limit number of descriptors down to 48 per ring

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Message-Id: <20100719.202401.129745775.davem@davemloft.net>
Date:	Mon, 19 Jul 2010 20:24:01 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jeffrey.t.kirsher@...el.com
Cc:	netdev@...r.kernel.org, gospo@...hat.com, bphilips@...ell.com,
	alexander.h.duyck@...el.com
Subject: Re: [net-next-2.6 PATCH] e1000: allow option to limit number of
 descriptors down to 48 per ring

From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Date: Mon, 19 Jul 2010 16:43:47 -0700

> From: Alexander Duyck <alexander.h.duyck@...el.com>
> 
> This change makes it possible to limit the number of descriptors down to 48
> per ring.  The reason for this change is to address a variation on hardware
> errata 10 for 82546GB in which descriptors will be lost if more than 32
> descriptors are fetched and the PCI-X MRBC is 512.
> 
> Signed-off-by: Alexander Duyck <alexander.h.duyck@...el.com>
> Tested-by: Emil Tantilov <emil.s.tantilov@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>

Applied.
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