From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [net-2.6 PATCH 2/3] igb: prevent skb_over panic w/ mtu smaller than 1K Date: Sat, 31 Jan 2009 00:53:41 -0800 (PST) Message-ID: <20090131.005341.30242349.davem@davemloft.net> References: <20090131005340.1466.93281.stgit@lost.foo-projects.org> <20090131005404.1466.30069.stgit@lost.foo-projects.org> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, jeff@garzik.org, gospo@redhat.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]:59957 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751506AbZAaIxp (ORCPT ); Sat, 31 Jan 2009 03:53:45 -0500 In-Reply-To: <20090131005404.1466.30069.stgit@lost.foo-projects.org> Sender: netdev-owner@vger.kernel.org List-ID: From: Jeff Kirsher Date: Fri, 30 Jan 2009 16:54:04 -0800 > A panic has been observed with frame sizes smaller than 1K. This has been > root caused to the hardware spanning larger frames across multiple buffers > and then reporting the original frame size in the first descriptor. To > prevent this we can enable set the LPE bit which in turn will restrict > packet sizes to those set in the RLPML register. > > Signed-off-by: Alexander Duyck > Signed-off-by: Jeff Kirsher Applied.