1 files changed, 11 insertions, 0 deletions
diff --git a/src/net/netdevice.c b/src/net/netdevice.c
index ec3456a93..a71666304 100644
--- a/src/net/netdevice.c
+++ b/src/net/netdevice.c
@@ -33,6 +33,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
 #include <ipxe/init.h>
 #include <ipxe/device.h>
 #include <ipxe/errortab.h>
+#include <ipxe/vlan.h>
 #include <ipxe/netdevice.h>
 
 /** @file
@@ -783,5 +784,15 @@ static void net_step ( struct process *process __unused ) {
 	net_poll();
 }
 
+/**
+ * Get the VLAN tag (when VLAN support is not present)
+ *
+ * @v netdev		Network device
+ * @ret tag		0, indicating that device is not a VLAN device
+ */
+__weak unsigned int vlan_tag ( struct net_device *netdev __unused ) {
+	return 0;
+}
+
 /** Networking stack process */
 PERMANENT_PROCESS ( net_process, net_step );