Index: connlimit/linux-2.6.11/net/ipv4/netfilter/ipt_connlimit.c
===================================================================
--- connlimit/linux-2.6.11/net/ipv4/netfilter/ipt_connlimit.c	(revision 3884)
+++ connlimit/linux-2.6.11/net/ipv4/netfilter/ipt_connlimit.c	(working copy)
@@ -35,15 +35,13 @@
 	struct list_head iphash[256];
 };
 
-static int ipt_iphash(u_int32_t addr)
+static inline unsigned __attribute__((regparm(1), const))
+ipt_iphash(const unsigned addr)
 {
-	int hash;
-
-	hash  =  addr        & 0xff;
-	hash ^= (addr >>  8) & 0xff;
-	hash ^= (addr >> 16) & 0xff;
-	hash ^= (addr >> 24) & 0xff;
-	return hash;
+	return ((addr ^
+		(addr >>  8) ^
+		(addr >> 16) ^
+		(addr >> 24)) & 0xff);
 }
 
 static int count_them(struct ipt_connlimit_data *data,