+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0)
+#define __UNIFY_VLAN_RX_PATH__
+#define __USE_NDO_SET_RX_MODE__
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)
+#define __USE_SKB_FRAG_API__
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)
+#define __NEW_FIX_FEATURES_TYPE__
+#endif
+