diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index f7fa8cd..c9cc40e 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -302,6 +302,10 @@
 #define IPR_SUBTYPE_GENERIC_SCSI	1
 #define IPR_SUBTYPE_VOLUME_SET		2
 
+#define IPR_QUEUEING_MODEL(res)	((((res)->cfgte.flags) & 0x70) >> 4)
+#define IPR_QUEUE_FROZEN_MODEL	0
+#define IPR_QUEUE_NACA_MODEL		1
+
 	struct ipr_res_addr res_addr;
 	__be32 res_handle;
 	__be32 reserved4[2];
@@ -1294,6 +1298,20 @@
 }
 
 /**
+ * ipr_is_naca_model - Determine if a resource is using NACA queueing model
+ * @res:	resource entry struct
+ *
+ * Return value:
+ * 	1 if NACA queueing model / 0 if not NACA queueing model
+ **/
+static inline int ipr_is_naca_model(struct ipr_resource_entry *res)
+{
+	if (ipr_is_gscsi(res) && IPR_QUEUEING_MODEL(res) == IPR_QUEUE_NACA_MODEL)
+		return 1;
+	return 0;
+}
+
+/**
  * ipr_is_device - Determine if resource address is that of a device
  * @res_addr:	resource address struct
  *