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

*** 29,40 ****
  
  #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 XNF_MAXPKT      1500            /* MTU size */
  #define XNF_FRAMESIZE   1514            /* frame size including MAC header */
  
  /* DEBUG flags */
--- 29,40 ----
  
  #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 XNF_MAXPKT      1500            /* MTU size */
  #define XNF_FRAMESIZE   1514            /* frame size including MAC header */
  
  /* DEBUG flags */