3373 gcc >= 4.5 concerns about offsetof()
Portions contributed by: Igor Pashev <pashev.igor@gmail.com>

@@ -29,12 +29,12 @@
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#define NET_TX_RING_SIZE  __RING_SIZE((netif_tx_sring_t *)0, PAGESIZE)
-#define NET_RX_RING_SIZE  __RING_SIZE((netif_rx_sring_t *)0, PAGESIZE)
+#define NET_TX_RING_SIZE  __CONST_RING_SIZE(netif_tx, PAGESIZE)
+#define NET_RX_RING_SIZE  __CONST_RING_SIZE(netif_rx, PAGESIZE)
 
 #define XNF_MAXPKT      1500            /* MTU size */
 #define XNF_FRAMESIZE   1514            /* frame size including MAC header */
 
 /* DEBUG flags */