[INET]: Consolidate the xxx_frag_kill

Since now all the xxx_frag_kill functions now work
with the generic inet_frag_queue data type, this can
be moved into a common place.

The xxx_unlink() code is moved as well.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 24 insertions, 22 deletions

diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index 69623ff4e4c6..534eaa8cdcf3 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -42,3 +42,26 @@ void inet_frags_fini(struct inet_frags *f)
 {
 }
 EXPORT_SYMBOL(inet_frags_fini);
+
+static inline void fq_unlink(struct inet_frag_queue *fq, struct inet_frags *f)
+{
+        write_lock(&f->lock);
+        hlist_del(&fq->list);
+        list_del(&fq->lru_list);
+        f->nqueues--;
+        write_unlock(&f->lock);
+}
+
+void inet_frag_kill(struct inet_frag_queue *fq, struct inet_frags *f)
+{
+        if (del_timer(&fq->timer))
+                atomic_dec(&fq->refcnt);
+
+        if (!(fq->last_in & COMPLETE)) {
+                fq_unlink(fq, f);
+                atomic_dec(&fq->refcnt);
+                fq->last_in |= COMPLETE;
+        }
+}
+
+EXPORT_SYMBOL(inet_frag_kill);
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 0dd9a31df212..7416c05dd334 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -108,20 +108,6 @@ int ip_frag_mem(void)
 static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
                          struct net_device *dev);
 
-static __inline__ void __ipq_unlink(struct ipq *qp)
-{
-        hlist_del(&qp->q.list);
-        list_del(&qp->q.lru_list);
-        ip4_frags.nqueues--;
-}
-
-static __inline__ void ipq_unlink(struct ipq *ipq)
-{
-        write_lock(&ip4_frags.lock);
-        __ipq_unlink(ipq);
-        write_unlock(&ip4_frags.lock);
-}
-
 static unsigned int ipqhashfn(__be16 id, __be32 saddr, __be32 daddr, u8 prot)
 {
         return jhash_3words((__force u32)id << 16 | prot,
@@ -222,14 +208,7 @@ static __inline__ void ipq_put(struct ipq *ipq, int *work)
  */
 static void ipq_kill(struct ipq *ipq)
 {
-        if (del_timer(&ipq->q.timer))
-                atomic_dec(&ipq->q.refcnt);
-
-        if (!(ipq->q.last_in & COMPLETE)) {
-                ipq_unlink(ipq);
-                atomic_dec(&ipq->q.refcnt);
-                ipq->q.last_in |= COMPLETE;
-        }
+        inet_frag_kill(&ipq->q, &ip4_frags);
 }
 
 /* Memory limiting on fragments.  Evictor trashes the oldest