Load tun kernel driver

This commit extend the sriov-network-config-daemon to try and load the tun device on start.

Signed-off-by: Sebastian Sch <[email protected]>

bindata/scripts/load-kmod.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 # chroot /host/ modprobe $1
 kmod_name=$(tr "-" "_" <<< $1)
-chroot /host/ lsmod | grep $1 >& /dev/null
+chroot /host/ lsmod | grep "^$1" >& /dev/null
 
 if [ $? -eq 0 ]
 then

pkg/daemon/daemon.go

@@ -231,6 +231,7 @@ func (dn *Daemon) Run(stopCh <-chan struct{}, exitCh <-chan error) error {
 	defer dn.workqueue.ShutDown()
 
 	tryEnableRdma()
+	tryEnableTun()
 
 	if err := sriovnetworkv1.InitNicIdMap(dn.kubeClient, namespace); err != nil {
 		return err
@@ -942,6 +943,12 @@ func registerPlugins(ns *sriovnetworkv1.SriovNetworkNodeState) []string {
 	return nameList
 }
 
+func tryEnableTun() {
+	if err := utils.LoadKernelModule("tun"); err != nil {
+		glog.Errorf("tryEnableTun(): TUN kernel module not loaded: %v", err)
+	}
+}
+
 func tryEnableRdma() (bool, error) {
 	glog.V(2).Infof("tryEnableRdma()")
 	var stdout, stderr bytes.Buffer