diff --git a/src/transport/container-of.h b/src/transport/container-of.h
new file mode 100644
index 0000000..facefe5
--- /dev/null
+++ b/src/transport/container-of.h
@@ -0,0 +1,9 @@
+#ifndef CONTAINER_OF_H
+#define CONTAINER_OF_H
+
+#ifndef container_of
+#define container_of(ptr, type, member)                                        \
+	(type *)((char *)(ptr)-offsetof(type, member))
+#endif
+
+#endif