From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Berg Subject: Re: sysfs class/net/ problem Date: Wed, 02 Jun 2010 17:48:13 +0200 Message-ID: <1275493693.3915.12.camel@jlt3.sipsolutions.net> References: <1275484611.3915.11.camel@jlt3.sipsolutions.net> <20100602154608.GB12361@kroah.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: netdev , "Eric W. Biederman" To: Greg KH Return-path: Received: from he.sipsolutions.net ([78.46.109.217]:50002 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757699Ab0FBPsO (ORCPT ); Wed, 2 Jun 2010 11:48:14 -0400 In-Reply-To: <20100602154608.GB12361@kroah.com> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, 2010-06-02 at 08:46 -0700, Greg KH wrote: > > # rmmod mac80211_hwsim mac80211 cfg80211 > > # ip link > > 1: lo: mtu 16436 qdisc noqueue state UNKNOWN > > link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 > > 2: eth0: mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000 > > link/ether 52:54:00:12:34:56 brd ff:ff:ff:ff:ff:ff > > # ls -l /sys/class/net/ > > total 0 > > lrwxrwxrwx 1 root root 0 Jun 2 13:12 eth0 -> ../../devices/pci0000:00/0000:00:03.0/net/eth0 > > lrwxrwxrwx 1 root root 0 Jun 2 13:12 lo -> ../../devices/virtual/net/lo > > lrwxrwxrwx 1 root root 0 Jun 2 13:14 wlan0 -> ../../devices/virtual/mac80211_hwsim/hwsim0/wlan0 > > lrwxrwxrwx 1 root root 0 Jun 2 13:14 wlan1 -> ../../devices/virtual/mac80211_hwsim/hwsim1/wlan1 > > lrwxrwxrwx 1 root root 0 Jun 2 13:14 wlan2 -> ../../devices/virtual/mac80211_hwsim/hwsim2/wlan2 > > Ah, so the network devices aren't getting removed? Well the netdevs are gone, just the links aren't going away. the mac80211_hwsim directory is gone too. > Do you have network namespaces enabled in your kernel or disabled? enabled > And this is 2.6.35-rc1, right? yes. Come to think of it, maybe somehow it ends up removing mac80211_hwsim/hwsim0 before wlan0, and thus the link stays around? I guess I could make it print messages about that somehow? johannes