[IPV4]: Uninline inet_lookup_listener

By modern standards this function is way too big to be inlined.  It's
even bigger than __inet_lookup_listener :)
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/inet_hashtables.h

@@ -271,39 +271,10 @@ static inline int inet_iif(const struct sk_buff *skb)
 	return ((struct rtable *)skb->dst)->rt_iif;
 }
 
-extern struct sock *__inet_lookup_listener(const struct hlist_head *head,
-					   const u32 daddr,
-					   const unsigned short hnum,
-					   const int dif);
-
-/* Optimize the common listener case. */
-static inline struct sock *
+extern struct sock *
 		inet_lookup_listener(struct inet_hashinfo *hashinfo,
 				     const u32 daddr,
-				     const unsigned short hnum, const int dif)
-{
-	struct sock *sk = NULL;
-	const struct hlist_head *head;
-
-	read_lock(&hashinfo->lhash_lock);
-	head = &hashinfo->listening_hash[inet_lhashfn(hnum)];
-	if (!hlist_empty(head)) {
-		const struct inet_sock *inet = inet_sk((sk = __sk_head(head)));
-
-		if (inet->num == hnum && !sk->sk_node.next &&
-		    (!inet->rcv_saddr || inet->rcv_saddr == daddr) &&
-		    (sk->sk_family == PF_INET || !ipv6_only_sock(sk)) &&
-		    !sk->sk_bound_dev_if)
-			goto sherry_cache;
-		sk = __inet_lookup_listener(head, daddr, hnum, dif);
-	}
-	if (sk) {
-sherry_cache:
-		sock_hold(sk);
-	}
-	read_unlock(&hashinfo->lhash_lock);
-	return sk;
-}
+				     const unsigned short hnum, const int dif);
 
 /* Socket demux engine toys. */
 #ifdef __BIG_ENDIAN

net/ipv4/inet_hashtables.c

@@ -124,8 +124,10 @@ EXPORT_SYMBOL(inet_listen_wlock);
  * remote address for the connection. So always assume those are both
  * wildcarded during the search since they can never be otherwise.
  */
-struct sock *__inet_lookup_listener(const struct hlist_head *head, const u32 daddr,
-				    const unsigned short hnum, const int dif)
+static struct sock *__inet_lookup_listener(const struct hlist_head *head,
+					   const u32 daddr,
+					   const unsigned short hnum,
+					   const int dif)
 {
 	struct sock *result = NULL, *sk;
 	const struct hlist_node *node;
@@ -159,7 +161,34 @@ struct sock *__inet_lookup_listener(const struct hlist_head *head, const u32 dad
 	return result;
 }
 
-EXPORT_SYMBOL_GPL(__inet_lookup_listener);
+/* Optimize the common listener case. */
+struct sock *inet_lookup_listener(struct inet_hashinfo *hashinfo,
+				  const u32 daddr, const unsigned short hnum,
+				  const int dif)
+{
+	struct sock *sk = NULL;
+	const struct hlist_head *head;
+
+	read_lock(&hashinfo->lhash_lock);
+	head = &hashinfo->listening_hash[inet_lhashfn(hnum)];
+	if (!hlist_empty(head)) {
+		const struct inet_sock *inet = inet_sk((sk = __sk_head(head)));
+
+		if (inet->num == hnum && !sk->sk_node.next &&
+		    (!inet->rcv_saddr || inet->rcv_saddr == daddr) &&
+		    (sk->sk_family == PF_INET || !ipv6_only_sock(sk)) &&
+		    !sk->sk_bound_dev_if)
+			goto sherry_cache;
+		sk = __inet_lookup_listener(head, daddr, hnum, dif);
+	}
+	if (sk) {
+sherry_cache:
+		sock_hold(sk);
+	}
+	read_unlock(&hashinfo->lhash_lock);
+	return sk;
+}
+EXPORT_SYMBOL_GPL(inet_lookup_listener);
 
 /* called with local bh disabled */
 static int __inet_check_established(struct inet_timewait_death_row *death_row,