#define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
#define NETIF_F_TSO 2048 /* Can offload TCP/IP segmentation */
#define NETIF_F_LLTX 4096 /* LockLess TX */
+#define NETIF_F_UFO 8192 /* Can offload UDP Large Send*/
struct net_device *next_sched;