Index: sys/dev/xen/netfront/netfront.c
===================================================================
--- sys/dev/xen/netfront/netfront.c
+++ sys/dev/xen/netfront/netfront.c
@@ -74,8 +74,8 @@
 /* Features supported by all backends.  TSO and LRO can be negotiated */
 #define XN_CSUM_FEATURES	(CSUM_TCP | CSUM_UDP)
 
-#define NET_TX_RING_SIZE __RING_SIZE((netif_tx_sring_t *)0, PAGE_SIZE)
-#define NET_RX_RING_SIZE __RING_SIZE((netif_rx_sring_t *)0, PAGE_SIZE)
+#define NET_TX_RING_SIZE __CONST_RING_SIZE(netif_tx, PAGE_SIZE)
+#define NET_RX_RING_SIZE __CONST_RING_SIZE(netif_rx, PAGE_SIZE)
 
 #define NET_RX_SLOTS_MIN (XEN_NETIF_NR_SLOTS_MIN + 1)