diff --git a/drivers/net/cxgb4/cxgb4_uld.h b/drivers/net/cxgb4/cxgb4_uld.h
index 0dc0866..85d74e7 100644
--- a/drivers/net/cxgb4/cxgb4_uld.h
+++ b/drivers/net/cxgb4/cxgb4_uld.h
@@ -187,8 +187,12 @@
 	struct cxgb4_range pbl;
 	struct cxgb4_range qp;
 	struct cxgb4_range cq;
+	struct cxgb4_range ocq;
 };
 
+#define OCQ_WIN_OFFSET(pdev, vres) \
+	(pci_resource_len((pdev), 2) - roundup_pow_of_two((vres)->ocq.size))
+
 /*
  * Block of information the LLD provides to ULDs attaching to a device.
  */