From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joe Jin Subject: Re: [E1000-devel] 82571EB: Detected Hardware Unit Hang Date: Tue, 27 Nov 2012 08:59:35 +0800 Message-ID: <50B41077.3080009@oracle.com> References: <509B5038.8090304@oracle.com> <061C8A8601E8EE4CA8D8FD6990CEA89133487884@ORSMSX102.amr.corp.intel.com> <50A30656.6090508@oracle.com> <061C8A8601E8EE4CA8D8FD6990CEA8913348B105@ORSMSX102.amr.corp.intel.com> <50A43828.6000702@oracle.com> <061C8A8601E8EE4CA8D8FD6990CEA8913349A0B4@ORSMSX102.amr.corp.intel.com> <50A9C5CC.1030300@oracle.com> <061C8A8601E8EE4CA8D8FD6990CEA8913349EB41@ORSMSX102.amr.corp.intel.com> <50AB8471.7080607@oracle.com> <9B4A1B1917080E46B64F07F2989DADD62F2D62D6@ORSMSX102.amr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: "Dave, Tushar N" , "netdev@vger.kernel.org" , "e1000-devel@lists.sf.net" , "linux-kernel@vger.kernel.org" , Mary Mcgrath To: "Fujinaka, Todd" Return-path: In-Reply-To: <9B4A1B1917080E46B64F07F2989DADD62F2D62D6@ORSMSX102.amr.corp.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On 11/27/12 00:23, Fujinaka, Todd wrote: > If you look at the previous section, DevCap, you'll see that it's > correctly advertising 256 bytes but the system is negotiating 128 for > the link to the Ethernet controller. Things on the "other" side of the > link are controlled outside of the e1000 driver. > > Tushar's first suggestion was to check the PCIe payload settings in the > entire chain. Have you done that? Mismatches will cause hangs. Hi Todd, So far I had to know how to modify the maxpayload size, since BIOS have not entry to change this, so I had to use ethtool, now I need to get the offset of MaxPayload size in eeprom, I ever tried to find from Intel online document but failed, any idea? Thanks in advance, Joe