net: sched: change type of reference and bind counters

Change type of action reference counter to refcount_t.

Change type of action bind counter to atomic_t.
This type is used to allow decrementing bind counter without testing
for 0 result.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index 14c312d..7bce88d 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -280,8 +280,8 @@ static int tcf_ipt_dump(struct sk_buff *skb, struct tc_action *a, int bind,
 	if (unlikely(!t))
 		goto nla_put_failure;
 
-	c.bindcnt = ipt->tcf_bindcnt - bind;
-	c.refcnt = ipt->tcf_refcnt - ref;
+	c.bindcnt = atomic_read(&ipt->tcf_bindcnt) - bind;
+	c.refcnt = refcount_read(&ipt->tcf_refcnt) - ref;
 	strcpy(t->u.user.name, ipt->tcfi_t->u.kernel.target->name);
 
 	if (nla_put(skb, TCA_IPT_TARG, ipt->tcfi_t->u.user.target_size, t) ||