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-rw-r--r--include/net/inet_hashtables.h33
-rw-r--r--net/ipv4/inet_hashtables.c35
2 files changed, 34 insertions, 34 deletions
diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h
index 98e0bb3014fe..bd513f3b9c7e 100644
--- a/include/net/inet_hashtables.h
+++ b/include/net/inet_hashtables.h
@@ -271,39 +271,10 @@ static inline int inet_iif(const struct sk_buff *skb)
271 return ((struct rtable *)skb->dst)->rt_iif; 271 return ((struct rtable *)skb->dst)->rt_iif;
272} 272}
273 273
274extern struct sock *__inet_lookup_listener(const struct hlist_head *head, 274extern struct sock *
275 const u32 daddr,
276 const unsigned short hnum,
277 const int dif);
278
279/* Optimize the common listener case. */
280static inline struct sock *
281 inet_lookup_listener(struct inet_hashinfo *hashinfo, 275 inet_lookup_listener(struct inet_hashinfo *hashinfo,
282 const u32 daddr, 276 const u32 daddr,
283 const unsigned short hnum, const int dif) 277 const unsigned short hnum, const int dif);
284{
285 struct sock *sk = NULL;
286 const struct hlist_head *head;
287
288 read_lock(&hashinfo->lhash_lock);
289 head = &hashinfo->listening_hash[inet_lhashfn(hnum)];
290 if (!hlist_empty(head)) {
291 const struct inet_sock *inet = inet_sk((sk = __sk_head(head)));
292
293 if (inet->num == hnum && !sk->sk_node.next &&
294 (!inet->rcv_saddr || inet->rcv_saddr == daddr) &&
295 (sk->sk_family == PF_INET || !ipv6_only_sock(sk)) &&
296 !sk->sk_bound_dev_if)
297 goto sherry_cache;
298 sk = __inet_lookup_listener(head, daddr, hnum, dif);
299 }
300 if (sk) {
301sherry_cache:
302 sock_hold(sk);
303 }
304 read_unlock(&hashinfo->lhash_lock);
305 return sk;
306}
307 278
308/* Socket demux engine toys. */ 279/* Socket demux engine toys. */
309#ifdef __BIG_ENDIAN 280#ifdef __BIG_ENDIAN
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 95fac5532994..bfc39066e730 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -124,8 +124,10 @@ EXPORT_SYMBOL(inet_listen_wlock);
124 * remote address for the connection. So always assume those are both 124 * remote address for the connection. So always assume those are both
125 * wildcarded during the search since they can never be otherwise. 125 * wildcarded during the search since they can never be otherwise.
126 */ 126 */
127struct sock *__inet_lookup_listener(const struct hlist_head *head, const u32 daddr, 127static struct sock *__inet_lookup_listener(const struct hlist_head *head,
128 const unsigned short hnum, const int dif) 128 const u32 daddr,
129 const unsigned short hnum,
130 const int dif)
129{ 131{
130 struct sock *result = NULL, *sk; 132 struct sock *result = NULL, *sk;
131 const struct hlist_node *node; 133 const struct hlist_node *node;
@@ -159,7 +161,34 @@ struct sock *__inet_lookup_listener(const struct hlist_head *head, const u32 dad
159 return result; 161 return result;
160} 162}
161 163
162EXPORT_SYMBOL_GPL(__inet_lookup_listener); 164/* Optimize the common listener case. */
165struct sock *inet_lookup_listener(struct inet_hashinfo *hashinfo,
166 const u32 daddr, const unsigned short hnum,
167 const int dif)
168{
169 struct sock *sk = NULL;
170 const struct hlist_head *head;
171
172 read_lock(&hashinfo->lhash_lock);
173 head = &hashinfo->listening_hash[inet_lhashfn(hnum)];
174 if (!hlist_empty(head)) {
175 const struct inet_sock *inet = inet_sk((sk = __sk_head(head)));
176
177 if (inet->num == hnum && !sk->sk_node.next &&
178 (!inet->rcv_saddr || inet->rcv_saddr == daddr) &&
179 (sk->sk_family == PF_INET || !ipv6_only_sock(sk)) &&
180 !sk->sk_bound_dev_if)
181 goto sherry_cache;
182 sk = __inet_lookup_listener(head, daddr, hnum, dif);
183 }
184 if (sk) {
185sherry_cache:
186 sock_hold(sk);
187 }
188 read_unlock(&hashinfo->lhash_lock);
189 return sk;
190}
191EXPORT_SYMBOL_GPL(inet_lookup_listener);
163 192
164/* called with local bh disabled */ 193/* called with local bh disabled */
165static int __inet_check_established(struct inet_timewait_death_row *death_row, 194static int __inet_check_established(struct inet_timewait_death_row *death_row,