Index: sys/net/if_bridgevar.h
===================================================================
--- sys/net/if_bridgevar.h
+++ sys/net/if_bridgevar.h
@@ -76,6 +76,10 @@
  * Data structure and control definitions for bridge interfaces.
  */
 
+#include <net/ethernet.h>
+#include <net/if.h>
+
+#include <sys/types.h>
 #include <sys/callout.h>
 #include <sys/queue.h>
 #include <sys/condvar.h>