Thanks for your reply. In my use case, it's OVS userspace datapath with dpdk.
My detail case was a bit complicated as follows: 1. Start the OVS userspace datapath with dpdk in my host server. 2. A VM was running and the VNIC's vhostuser port on the userspace datapath is configured as QinQ mode, qinq-ethtype 802.1q. 3. Another kernel OVS is running in that VM to switch packets of some containers. Then the container's VNIC port on the kernel datapath is also configured as QinQ Mode, qinq-ethtype=802.1q . 4. So when the container sends a packet with VLAN tag, the OVS running in the host will receive a packet with 2 VLANS from the VM. 5. Here the QinQ is not worked when we need 3 VLANs. Yes, VXLAN or PBB can work but we need change our basic network topology and push/pop for every packets. That maybe the last choice if QinQ can't support triple VLAN. -----Original Message----- From: Ben Pfaff [mailto:b...@ovn.org] Sent: Tuesday, September 11, 2018 3:33 AM To: Eric Garver <e...@garver.life>; Lilijun (Jerry, Cloud Networking) <jerry.lili...@huawei.com>; d...@openvswitch.org; ovs-disc...@openvswitch.org Subject: Re: [ovs-discuss] [PATCH v2] [ovs-dev] [PATCH] QinQ: support more vlan headers. On Mon, Sep 10, 2018 at 03:15:21PM -0400, Eric Garver wrote: > On Mon, Sep 10, 2018 at 03:03:19AM +0000, Lilijun (Jerry, Cloud Networking) > wrote: > > Hi Eric, > > > > Yes, I agree with that effect. > > But how about this issue of QinQ that we can only support at most 2 VLANs ? > > Do you have any ideas? > > I was not NACKing the idea. Just wanted everyone to understand the > implications of increasing the VLAN field size. > > I tried playing with the fields, but didn't come with a reasonable way > to rearrange them to make room for the extra VLANs. > > I'm curious what you're use case is for triple VLAN. I wonder if VXLAN > or PBB (802.1ah) is a better solution. I'd also like to know what datapath we're talking about. The Linux kernel datapath only supports 2 VLANs in any case. _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
