On Thu, Dec 8, 2016 at 12:20 AM, Yi Yang <yi.y.y...@intel.com> wrote:
> In ovs compat mode, ovs won't use LWT in current kernel, this is to
> make sure ovs can work on the old kernels, Linux kernel v4.7 includes
> VxLAN-gpe support but many Linux distributions' kernels are odler than
> v4.7, this fix will ensure that ovs can create VxLAN-gpe port correctly
> on old kernels, it has been verified on Ubuntu 16.04 x86_64 with Linux
> kernel 4.4.0-53-generic.
>
> This does touch compat code, but it is necessary as Pravin commented.
>
> Without this fix, ovs can't create VxLAN-gpe port, it is still a VxLAN
> port.
>
> vxlan_sys_4790 Link encap:Ethernet HWaddr 72:23:60:c2:8b:8d
> inet6 addr: fe80::7023:60ff:fec2:8b8d/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:65485 Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:8 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
>
> But with this fix applied, a real L3 port is created
>
> vxlan_sys_4790 Link encap:UNSPEC HWaddr
> 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
> UP POINTOPOINT RUNNING NOARP MULTICAST MTU:65485 Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
>
> Signed-off-by: Yi Yang <yi.y.y...@intel.com>
> ---
> include/uapi/linux/openvswitch.h | 1 +
> net/openvswitch/vport-vxlan.c | 15 +++++++++++++++
> 2 files changed, 16 insertions(+)
>
There is no need for this patch in upstream kernel module. I am open
to having such a patch in out of tree kernel if it simplifies feature
compatibility code.
