netdev-dpdk: Add option to configure VF MAC address.

In some cloud topologies, using DPDK VF representors in guest requires
configuring a VF before it is assigned to the guest.

A first basic option for such configuration is setting the VF MAC
address. Add a key 'dpdk-vf-mac' to the 'options' column of the Interface
table.

This option can be used as such:

   $ ovs-vsctl add-port br0 dpdk-rep0 -- set Interface dpdk-rep0 type=dpdk \
      options:dpdk-vf-mac=00:11:22:33:44:55

Suggested-by: Ilya Maximets <i.maximets@ovn.org>
Acked-by: Eli Britstein <elibr@nvidia.com>
Acked-by: Kevin Traynor <ktraynor@redhat.com>
Signed-off-by: Gaetan Rivet <grive@u256.net>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml
index d0890b843..89a876796 100644
--- a/vswitchd/vswitch.xml
+++ b/vswitchd/vswitch.xml
@@ -3275,6 +3275,24 @@ ovs-vsctl add-port br0 p0 -- set Interface p0 type=patch options:peer=p1 \
           descriptors will be used by default.
         </p>
       </column>
+
+      <column name="options" key="dpdk-vf-mac">
+        <p>
+          Ethernet address to set for this VF interface.  If unset then the
+          default MAC address is used:
+        </p>
+        <ul>
+          <li>
+            For most drivers, the default MAC address assigned by their
+            hardware.
+          </li>
+          <li>
+            For bifurcated drivers, the MAC currently used by the kernel
+            netdevice.
+          </li>
+        </ul>
+        <p>This option may only be used with dpdk VF representors.</p>
+      </column>
     </group>
 
     <group title="EMC (Exact Match Cache) Configuration">