diff --git a/src/extended/hw_nat/acl_api.h b/src/extended/hw_nat/acl_api.h
new file mode 100644
index 0000000..9b6f574
--- /dev/null
+++ b/src/extended/hw_nat/acl_api.h
@@ -0,0 +1,16 @@
+#ifndef __ACL_API
+#define __ACL_API
+
+#define NIPQUAD(addr) \
+        ((unsigned char *)&addr)[3], \
+        ((unsigned char *)&addr)[2], \
+        ((unsigned char *)&addr)[1], \
+        ((unsigned char *)&addr)[0]
+#define NIPHALF(addr) \
+        ((unsigned short *)&addr)[0], \
+        ((unsigned short *)&addr)[1]
+
+int SetAclEntry(struct acl_args *opt, unsigned int cmd);
+int AclGetAllEntries(struct acl_list_args *opt);
+
+#endif