#define NETIF_F_CSUM_MASK NETIF_F_ALL_CSUM
#endif
+#include <linux/skbuff.h>
+
+#define skb_inner_transport_offset LINUX_BACKPORT(skb_inner_transport_offset)
+static inline int skb_inner_transport_offset(const struct sk_buff *skb)
+{
+ return skb_inner_transport_header(skb) - skb->data;
+}
+
#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)) */
#endif /* LINUX_4_5_COMPAT_H */