From mboxrd@z Thu Jan 1 00:00:00 1970 From: Auke Kok Subject: Re: e1000 speed/duplex error Date: Tue, 01 Aug 2006 07:35:25 -0700 Message-ID: <44CF66AD.1030901@intel.com> References: <1301563340.20060801141827@mail.ru> <9929d2390608010420t60bd44d7o4e522c6edc0a677e@mail.gmail.com> <793732866.20060801153230@mail.ru> <9929d2390608010445w4fd81b64g310ae90a423e1a7d@mail.gmail.com> <911206621.20060801162006@mail.ru> <9929d2390608010534x54324569ja70b1fcbdc23c097@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: a1 , netdev@vger.kernel.org Return-path: Received: from mga01.intel.com ([192.55.52.88]:31933 "EHLO fmsmga101-1.fm.intel.com") by vger.kernel.org with ESMTP id S932519AbWHAOgp (ORCPT ); Tue, 1 Aug 2006 10:36:45 -0400 To: Jeff Kirsher In-Reply-To: <9929d2390608010534x54324569ja70b1fcbdc23c097@mail.gmail.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Jeff Kirsher wrote: > On 8/1/06, a1 wrote: >> Hi, Jeff. >> >> >> JK> OPTION 2: Turn auto-negotiate on the e1000 card and tell it to only >> JK> advertise 100 Full Duplex. This will allow negotiation between the >> JK> two lnk partners and the e1000 will advertise that it is only able to >> JK> do 100 Full duplex. >> >> Is there any way i could do this with ethtool? It only allows force >> spd/dplx , but not set it for advertising... > > Not currently. That would be a nice feature though... :) > >> >> If i do as follows other side reports 1000/FD: >> >> ethtool -s eth0 speed 100 duplex full autoneg on >> > > Which is what I would expect. I have to step away for a bit, but if > no one responds with how to load the driver with auto-negotiate > advertising only 100 Full Duplex, I will do so when I return. Here's that part of the driver documentation: $ modprobe e1000 AutoNeg=0x08 e1000: 0000:00:00.0: e1000_validate_option: AutoNeg advertising 100/FD 99 /* Auto-negotiation Advertisement Override 100 * 101 * Valid Range: 0x01-0x0F, 0x20-0x2F (copper); 0x20 (fiber) 102 * 103 * The AutoNeg value is a bit mask describing which speed and duplex 104 * combinations should be advertised during auto-negotiation. 105 * The supported speed and duplex modes are listed below 106 * 107 * Bit 7 6 5 4 3 2 1 0 108 * Speed (Mbps) N/A N/A 1000 N/A 100 100 10 10 109 * Duplex Full Full Half Full Half 110 * 111 * Default Value: 0x2F (copper); 0x20 (fiber) 112 */ hth, Auke