From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joakim Tjernlund Subject: Re: PHY down? Date: Tue, 2 Aug 2011 14:24:04 +0200 Message-ID: References: <1312282868.2591.68.camel@deadeye> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Cc: netdev@vger.kernel.org To: Ben Hutchings Return-path: Received: from gw1.transmode.se ([195.58.98.146]:37986 "EHLO gw1.transmode.se" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754178Ab1HBMYI (ORCPT ); Tue, 2 Aug 2011 08:24:08 -0400 In-Reply-To: <1312282868.2591.68.camel@deadeye> Sender: netdev-owner@vger.kernel.org List-ID: Ben Hutchings wrote on 2011/08/02 13:01:08: > > On Tue, 2011-08-02 at 11:24 +0200, Joakim Tjernlund wrote: > > I must be missing something obvious but I cannot find how > > to bring eth0's PHY down (link down) from user space. > > Tried various settings with ethtool and ifconfig eth0 down but it didn't help. > > If you configure an interface down, and if the interface is not used for > remote management, then some drivers will turn the PHY off. But there > is no general way to control this explicitly. OK, when to stop the PHY doesn't seem standardized. Seem logical to me to also turn off the PHY when interface is configured down. Perhaps this could be agreed upon? What does remote management mean? How do I identify if the I/F is used for remote management? Jocke > > Ben.