From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [net-next-2.6 PATCH] e1000: allow option to limit number of descriptors down to 48 per ring Date: Mon, 19 Jul 2010 20:24:01 -0700 (PDT) Message-ID: <20100719.202401.129745775.davem@davemloft.net> References: <20100719234219.13875.90302.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, gospo@redhat.com, bphilips@novell.com, alexander.h.duyck@intel.com To: jeffrey.t.kirsher@intel.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:37845 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758143Ab0GTDXs (ORCPT ); Mon, 19 Jul 2010 23:23:48 -0400 In-Reply-To: <20100719234219.13875.90302.stgit@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: From: Jeff Kirsher Date: Mon, 19 Jul 2010 16:43:47 -0700 > From: Alexander Duyck > > 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 > Tested-by: Emil Tantilov > Signed-off-by: Jeff Kirsher Applied.