Patch from http://sourceforge.net/p/ipt-netflow/bugs-requests-patches/71/

--- a/ipt_NETFLOW.c
+++ b/ipt_NETFLOW.c
@@ -854,9 +854,15 @@
 ipt_netflow_find(const struct ipt_netflow_tuple *tuple, unsigned int hash)
 {
 	struct ipt_netflow *nf;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0)
 	struct hlist_node *pos;
+#endif
 
-	hlist_for_each_entry(nf, pos, &ipt_netflow_hash[hash], hlist) {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0)
+	hlist_for_each_entry(nf, pos, &ipt_netflow_hash[hash], hlist) {
+#else
+	hlist_for_each_entry(nf, &ipt_netflow_hash[hash], hlist) {
+#endif
 		if (ipt_netflow_tuple_equal(tuple, &nf->tuple) &&
 		    nf->nr_bytes < FLOW_FULL_WATERMARK) {
 			NETFLOW_STAT_INC(found);
@@ -1434,12 +1439,20 @@
 	}
 
 #ifdef CONFIG_PROC_FS
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,10,0)
 	proc_stat = create_proc_entry("ipt_netflow", S_IRUGO, INIT_NET(proc_net_stat));
+#else
+	proc_stat = proc_create("ipt_netflow", S_IRUGO, INIT_NET(proc_net_stat), &nf_seq_fops);
+#endif
 	if (!proc_stat) {
 		printk(KERN_ERR "Unable to create /proc/net/stat/ipt_netflow entry\n");
 		goto err_free_netflow_slab;
 	}
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,10,0)
 	proc_stat->proc_fops = &nf_seq_fops;
+#endif
+
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
 	proc_stat->owner = THIS_MODULE;
 #endif