From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: Configuring ethernet link fails with No such device Date: Mon, 11 Apr 2016 21:29:00 -0400 (EDT) Message-ID: <20160411.212900.1164760179761034053.davem@davemloft.net> References: <67b662523c63277fa95a59472cbf018f@agner.ch> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: systemd-devel@lists.freedesktop.org, netdev@vger.kernel.org, fabio.estevam@freescale.com, l.stach@pengutronix.de, u.kleine-koenig@pengutronix.de, bryan.wu@canonical.com, bob.ham@collabora.com To: stefan@agner.ch Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:38640 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750719AbcDLB3D (ORCPT ); Mon, 11 Apr 2016 21:29:03 -0400 In-Reply-To: <67b662523c63277fa95a59472cbf018f@agner.ch> Sender: netdev-owner@vger.kernel.org List-ID: From: Stefan Agner Date: Mon, 11 Apr 2016 15:46:08 -0700 > What is the expectation/definition when link configuration should be > possible? Only after the network device got opened or before? Only after it is open. Drivers almost always have the entire chip in powerdown state when it is not open, so we wouldn't be able to properly do link settings even if we wanted to when the device is closed.