[NETFILTER]: Add nf_inet_addr_cmp()

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/netfilter.h

@@ -61,6 +61,15 @@ union nf_inet_addr {
 #ifdef __KERNEL__
 #ifdef CONFIG_NETFILTER
 
+static inline int nf_inet_addr_cmp(const union nf_inet_addr *a1,
+				   const union nf_inet_addr *a2)
+{
+	return a1->all[0] == a2->all[0] &&
+	       a1->all[1] == a2->all[1] &&
+	       a1->all[2] == a2->all[2] &&
+	       a1->all[3] == a2->all[3];
+}
+
 extern void netfilter_init(void);
 
 /* Largest hook number + 1 */

include/net/netfilter/nf_conntrack_tuple.h

@@ -163,10 +163,7 @@ struct nf_conntrack_tuple_hash
 static inline int __nf_ct_tuple_src_equal(const struct nf_conntrack_tuple *t1,
 					  const struct nf_conntrack_tuple *t2)
 { 
-	return (t1->src.u3.all[0] == t2->src.u3.all[0] &&
-		t1->src.u3.all[1] == t2->src.u3.all[1] &&
-		t1->src.u3.all[2] == t2->src.u3.all[2] &&
-		t1->src.u3.all[3] == t2->src.u3.all[3] &&
+	return (nf_inet_addr_cmp(&t1->src.u3, &t2->src.u3) &&
 		t1->src.u.all == t2->src.u.all &&
 		t1->src.l3num == t2->src.l3num);
 }
@@ -174,10 +171,7 @@ static inline int __nf_ct_tuple_src_equal(const struct nf_conntrack_tuple *t1,
 static inline int __nf_ct_tuple_dst_equal(const struct nf_conntrack_tuple *t1,
 					  const struct nf_conntrack_tuple *t2)
 {
-	return (t1->dst.u3.all[0] == t2->dst.u3.all[0] &&
-		t1->dst.u3.all[1] == t2->dst.u3.all[1] &&
-		t1->dst.u3.all[2] == t2->dst.u3.all[2] &&
-		t1->dst.u3.all[3] == t2->dst.u3.all[3] &&
+	return (nf_inet_addr_cmp(&t1->dst.u3, &t2->dst.u3) &&
 		t1->dst.u.all == t2->dst.u.all &&
 		t1->dst.protonum == t2->dst.protonum);
 }
@@ -192,10 +186,7 @@ static inline int nf_ct_tuple_equal(const struct nf_conntrack_tuple *t1,
 static inline int nf_ct_tuple_mask_equal(const struct nf_conntrack_tuple_mask *m1,
 					 const struct nf_conntrack_tuple_mask *m2)
 {
-	return (m1->src.u3.all[0] == m2->src.u3.all[0] &&
-		m1->src.u3.all[1] == m2->src.u3.all[1] &&
-		m1->src.u3.all[2] == m2->src.u3.all[2] &&
-		m1->src.u3.all[3] == m2->src.u3.all[3] &&
+	return (nf_inet_addr_cmp(&m1->src.u3, &m2->src.u3) &&
 		m1->src.u.all == m2->src.u.all);
 }