#include_next <net/ip.h>
#include <linux/version.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
-extern int __ip_local_out(struct sk_buff *skb);
-extern int ip_local_out(struct sk_buff *skb);
-
-#endif /* linux kernel < 2.6.25 */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0)
+static inline bool ip_is_fragment(const struct iphdr *iph)
+{
+ return (iph->frag_off & htons(IP_MF | IP_OFFSET)) != 0;
+}
+#endif
#endif