virtio-devices: vhost_user: net: Move control queue back

We thought we could move the control queue to the backend as it was
making some good sense. Unfortunately, doing so was a wrong design
decision as it broke the compatibility with OVS-DPDK backend.

This is why this commit moves the control queue back to the VMM side,
meaning an additional thread is being run for handling the communication
with the guest.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

vmm/src/device_manager.rs

@@ -2039,8 +2039,13 @@ impl DeviceManager {
                 VhostMode::Server => true,
             };
             let vhost_user_net_device = Arc::new(Mutex::new(
-                match virtio_devices::vhost_user::Net::new(id.clone(), net_cfg.mac, vu_cfg, server)
-                {
+                match virtio_devices::vhost_user::Net::new(
+                    id.clone(),
+                    net_cfg.mac,
+                    vu_cfg,
+                    server,
+                    self.seccomp_action.clone(),
+                ) {
                     Ok(vun_device) => vun_device,
                     Err(e) => {
                         return Err(DeviceManagerError::CreateVhostUserNet(e));