Re: [Qemu-discuss] qemu guests using 802.1q vlans bridged on host

[Stephan von Krawczynski]

On Sun, 29 Sep 2013 16:18:27 +0200
Stephan von Krawczynski <address@hidden> wrote:

> On Thu, 12 Sep 2013 09:39:40 -0400
> Vlad Yasevich <address@hidden> wrote:
> 
> > On 09/12/2013 06:19 AM, Stephan von Krawczynski wrote:
> > > On Wed, 11 Sep 2013 21:18:37 -0400
> > > Vlad Yasevich <address@hidden> wrote:
> > >
> > >> Are you by any chance configuring vlan filtering in the bridge?  If you
> > >> are, there are some bugs in the older stable kernels.  You'll need
> > >> 3.10.12 or use 3.11  to get some of them fixed.
> > >>
> > >> -vlad
> > >
> > > you mean we should wait for 3.10.12, it is not released yet...
> > 
> > Or patch your kernel with
> > https://git.kernel.org/cgit/linux/kernel/git/stable/stable-queue.git/tree/queue-3.10/bridge-use-the-correct-bit-length-for-bitmap-functions-in-the-vlan-code.patch?id=48e822e92590af2d4285aa94933ec571467f6b33
> > 
> > -vlad
> 
> It took some time, but now we wanted to try your vlan offload settings - but
> failed. Here is the current setting:
> 
> # ethtool -k p7p1 | grep vlan
> rx-vlan-offload: on
> tx-vlan-offload: on
> rx-vlan-filter: on [fixed]
> vlan-challenged: off [fixed]
> tx-vlan-stag-hw-insert: off [fixed]
> rx-vlan-stag-hw-parse: off [fixed]
> rx-vlan-stag-filter: off [fixed]
> 
> And now:
> 
> # ethtool -K p7p1 rx-vlan-filter off
> Could not change any device features
> # ethtool --version
> ethtool version 3.10
> # uname -r
> 3.10.9
> 
> 
> 
> Wrong syntax? Any hints?
> 
> -- 
> Regards,
> Stephan

Ok, we re-checked the whole issue under kernel 3.11.2 and found out it just
works. We do not even have to care about setting some options with ethtool.
Everything just works out-of-the-box. 
It looks like there were issues both in igb driver and bridge code that have 
been fixed.
Thanks a lot.

-- 
Regards,
Stephan