https://bugs.gentoo.org/713776
--- a/src/libcxgb4.h
+++ b/src/libcxgb4.h
@@ -41,7 +41,7 @@
 #include <sys/time.h>
 #include <infiniband/driver.h>
 #include <infiniband/arch.h>
-#include "queue.h"
+#include <sys/queue.h>
 #include "t4.h"
 
 extern unsigned long c4iw_page_size;