From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Frederic Sowa Subject: Re: ipv6 not bringing up due to qdisc_tx_is_noop failing Date: Wed, 16 Mar 2016 18:07:44 +0100 Message-ID: <56E992E0.1080708@stressinduktion.org> References: <56E97BEA.4070004@kyup.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, SiteGround Operations To: Nikolay Borisov , David Miller Return-path: Received: from out2-smtp.messagingengine.com ([66.111.4.26]:46552 "EHLO out2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932322AbcCPRHr (ORCPT ); Wed, 16 Mar 2016 13:07:47 -0400 Received: from compute6.internal (compute6.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 4C24B20D4B for ; Wed, 16 Mar 2016 13:07:46 -0400 (EDT) In-Reply-To: <56E97BEA.4070004@kyup.com> Sender: netdev-owner@vger.kernel.org List-ID: Hello, On 16.03.2016 16:29, Nikolay Borisov wrote: > I have stack traces which do show this sequence of events, so my > questions now are: > > 1. What's the difference between netdev_queue->qdisc and > netdev_queue->qdisc_sleeping. Git blaming indicates those member haves > existed even before the git history was started. qdisc_sleeping is the qdisc you configure before the device is brought up. It should transition during carrier up to the normal qdisc. > 2. Shouldn't the netdev_queue->qdisc also be updated during > attach_one_default_qdisc? Yes, do you have carrier up on your card? Is this a regression, did this work for you and stopped working with a specific kernel version? Thanks and bye, Hannes