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

*** 32,49 ****
  #include <sys/types.h>
  #include <sys/kstat.h>
  #include <sys/stream.h>
  #include <sys/ethernet.h>
  #include <sys/hypervisor.h>
  #include <xen/public/io/netif.h>
  
  #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 XNBMAXPKT       1500            /* MTU size */
  
  /* DEBUG flags */
  #define XNBDDI          0x01
--- 32,50 ----
  #include <sys/types.h>
  #include <sys/kstat.h>
  #include <sys/stream.h>
  #include <sys/ethernet.h>
  #include <sys/hypervisor.h>
+ #include <sys/sysmacros.h>
  #include <xen/public/io/netif.h>
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
! #define NET_TX_RING_SIZE  __CONST_RING_SIZE(netif_tx, PAGESIZE)
! #define NET_RX_RING_SIZE  __CONST_RING_SIZE(netif_rx, PAGESIZE)
  
  #define XNBMAXPKT       1500            /* MTU size */
  
  /* DEBUG flags */
  #define XNBDDI          0x01