xen: fix const warning

* xen/public/io/ring.h (__CONST_RING_SIZE): Add macro from upstream
* xen/net.c (WINDOW): Use __CONST_RING_SIZE instead of __RING_SIZE.

1 files changed, 1 insertions, 1 deletions

diff --git a/xen/net.c b/xen/net.c
index 1dc2209e..4507ead3 100644
--- a/xen/net.c
+++ b/xen/net.c
@@ -47,7 +47,7 @@
 /* Hypervisor part */
 
 #define ADDRESS_SIZE 6
-#define WINDOW __RING_SIZE((netif_rx_sring_t*)0, PAGE_SIZE)
+#define WINDOW __CONST_RING_SIZE(netif_rx, PAGE_SIZE)
 
 struct net_data {
 	struct device	device;