On Mon, Apr 17, 2017 at 09:35:26AM -0700, Ben Pfaff wrote:
> On Mon, Apr 17, 2017 at 10:51:08AM -0400, Eric Garver wrote:
> > On Mon, Apr 17, 2017 at 01:26:37PM +0800, Dickens Yeh wrote:
> > > Hello,
> > > I have a problem with matching ethertype when the packet with vlan tags.
> > > My testing environment is Ubuntu 16 in vmware fusion, mininet 2.2.2rc1,
> > > openvswitch 2.7.90
> > > 
> > > With these cases:
> > > case 1: packet with vlan=100,ethertype=arp
> > > case 2: packet with vlan=2000,vlan=100,ethertype=arp
> > > 
> > > The result of cases:
> > > case 1 can be matched by vlan=100 and ethertype=arp fields in a flow entry
> > > case 2 can be matched only by vlan=2000 and ethertype=0x8100 fields in a
> > > flow entry
> > > 
> > > But I read some informations from OpenFlow Spec 1.1, that says about 
> > > "match
> > > ethertype after all vlan tags".
> > > Is the resulf of case 2 should be matched vlan=2000 and ethertype=arp?
> > 
> > Until very recently openvswitch only supported a single VLAN tag.
> > Current master branch has support for 802.1ad/QinQ and can match the ARP
> > EtherType as you wish in case 2 above.
> 
> I think that OVS still doesn't have the ability to match multiple VLAN
> tags in a single flow entry.  I think that you have to match one, then
> pop it and match the second one in another flow lookup.

That is correct.
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