1 files changed, 15 insertions, 0 deletions

diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index d43e787031a4..1b7db4208969 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -48,6 +48,21 @@ static void __inet_twsk_kill(struct inet_timewait_sock *tw,
         inet_twsk_put(tw);
 }
 
+void inet_twsk_put(struct inet_timewait_sock *tw)
+{
+        if (atomic_dec_and_test(&tw->tw_refcnt)) {
+                struct module *owner = tw->tw_prot->owner;
+                twsk_destructor((struct sock *)tw);
+#ifdef SOCK_REFCNT_DEBUG
+                printk(KERN_DEBUG "%s timewait_sock %p released\n",
+                       tw->tw_prot->name, tw);
+#endif
+                kmem_cache_free(tw->tw_prot->twsk_prot->twsk_slab, tw);
+                module_put(owner);
+        }
+}
+EXPORT_SYMBOL_GPL(inet_twsk_put);
+
 /*
  * Enter the time wait state. This is called with locally disabled BH.
  * Essentially we whip up a timewait bucket, copy the relevant info into it