From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: [BUG iproute2] ip tuntap show Date: Wed, 31 Jan 2018 08:58:28 -0800 Message-ID: <1517417908.3715.102.camel@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: netdev , Maciej =?UTF-8?Q?=C5=BBenczykowski?= To: Stephen Hemminger , David Ahern Return-path: Received: from mail-pg0-f52.google.com ([74.125.83.52]:38407 "EHLO mail-pg0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751842AbeAaQ6a (ORCPT ); Wed, 31 Jan 2018 11:58:30 -0500 Received: by mail-pg0-f52.google.com with SMTP id y27so10529935pgc.5 for ; Wed, 31 Jan 2018 08:58:30 -0800 (PST) Sender: netdev-owner@vger.kernel.org List-ID: ip tuntap enumerates devices using /sys/class/net which is unusual. Should we replace this enumeration using /proc/net/dev like "ip tunnel" ? After "unshare -n" maybe mounting /sys should not be required for proper iproute2 behavior. At least ip command should adopt a common enumeration method. What do you think ? Thanks. lpaa5:~# cat /proc/net/dev Inter-| Receive | Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed adp0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 uinput4: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 dynencap4: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 sixtofour0: 696886 6733 0 0 0 0 0 0 480743 4445 0 0 0 0 0 0 uinput6: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 gretap0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ip6gre0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 tunl0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ip6tnl0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 gre0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 sit0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 sixdecap0: 0 0 0 0 0 0 0 0 559849 2371 0 0 0 0 0 0 lo: 80924524 222675 0 0 0 0 0 0 80924524 222675 0 0 0 0 0 0 eth2: 8898473491 131730002 0 0 0 0 0 89 8606929352 128406009 0 0 0 0 0 0 dynencap6: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 eth1: 9219322658 137558705 0 0 0 0 0 1592 9438658576 140822798 0 0 0 0 0 0 eth0: 18117796393 269288710 0 0 0 0 0 1682 18045588486 269228813 0 3 0 0 0 0 lpaa5:~# unshare -n lpaa5:~# cat /proc/net/dev Inter-| Receive | Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed lo: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 lpaa5:~# ip tuntap adp0: tap vnet_hdr UNKNOWN_FLAGS:940 lpaa5:~# mount -t sysfs sysfs /sys lpaa5:~# ip tuntap lpaa5:~# ls -l /sys/class/net total 0 -rw-r--r-- 1 root root 4096 Jan 31 08:51 bonding_masters lrwxrwxrwx 1 root root 0 Jan 31 08:51 lo -> ../../devices/virtual/net/lo lpaa5:~#