From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Lunn Subject: Re: confusing comment, explanation of @IFF_RUNNING in if.h Date: Sun, 26 Aug 2018 21:20:01 +0200 Message-ID: <20180826192001.GC7359@lunn.ch> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Linux kernel netdev mailing list To: "Robert P. J. Day" Return-path: Received: from vps0.lunn.ch ([185.16.172.187]:43392 "EHLO vps0.lunn.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726694AbeHZXD2 (ORCPT ); Sun, 26 Aug 2018 19:03:28 -0400 Content-Disposition: inline In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: > i ask since, in my testing, when the interface should have been up, > the attribute file "operstate" for that interface showed "unknown", > and i wondered how worried i should be about that. Hi Robert You should probably post the driver for review. A well written driver should not even need to care about any of this. phylib and the netdev driver code does all the work. It only gets interesting when you don't have a PHY, e.g. a stacked device, like bonding, or a virtual device like tun/tap. Andrew