[INET]: Consolidate xxx_frag_alloc()
Just perform the kzalloc() allocation and setup common
fields in the inet_frag_queue(). Then return the result
to the caller to initialize the rest.
The inet_frag_alloc() may return NULL, so check the
return value before doing the container_of(). This looks
ugly, but the xxx_frag_alloc() will be removed soon.
The xxx_expire() timer callbacks are patches,
because the argument is now the inet_frag_queue, not
the protocol specific queue.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 4b1bbbe..fc0d530 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -158,12 +158,10 @@
static __inline__ struct ipq *frag_alloc_queue(void)
{
- struct ipq *qp = kzalloc(sizeof(struct ipq), GFP_ATOMIC);
+ struct inet_frag_queue *q;
- if (!qp)
- return NULL;
- atomic_add(sizeof(struct ipq), &ip4_frags.mem);
- return qp;
+ q = inet_frag_alloc(&ip4_frags);
+ return q ? container_of(q, struct ipq, q) : NULL;
}
@@ -199,7 +197,9 @@
*/
static void ip_expire(unsigned long arg)
{
- struct ipq *qp = (struct ipq *) arg;
+ struct ipq *qp;
+
+ qp = container_of((struct inet_frag_queue *) arg, struct ipq, q);
spin_lock(&qp->q.lock);
@@ -249,13 +249,6 @@
qp->user = user;
qp->peer = sysctl_ipfrag_max_dist ? inet_getpeer(iph->saddr, 1) : NULL;
- /* Initialize a timer for this entry. */
- init_timer(&qp->q.timer);
- qp->q.timer.data = (unsigned long) qp; /* pointer to queue */
- qp->q.timer.function = ip_expire; /* expire function */
- spin_lock_init(&qp->q.lock);
- atomic_set(&qp->q.refcnt, 1);
-
return ip_frag_intern(qp, h);
out_nomem:
@@ -653,6 +646,7 @@
ip4_frags.skb_free = NULL;
ip4_frags.qsize = sizeof(struct ipq);
ip4_frags.equal = ip4_frag_equal;
+ ip4_frags.frag_expire = ip_expire;
inet_frags_init(&ip4_frags);
}