[PATCH] [2.4.20] filter_list destroy fix in net/sched/sch_prio.c

[Dimitry V. Ketov]

The prio qdisc does not destroy its filter list, when someone deletes
qdisc from interface without explicit filter deleting.
This patch fixes that behavior. 

--- linux-2.4.20/net/sched/sch_prio.c	Sat Aug  3 04:39:46 2002
+++ linux/net/sched/sch_prio.c	Thu Apr 10 17:52:55 2003
@@ -158,11 +158,19 @@
 {
 	int prio;
 	struct prio_sched_data *q = (struct prio_sched_data *)sch->data;
+	struct tcf_proto *tp;
 
 	for (prio=0; prio<q->bands; prio++) {
 		qdisc_destroy(q->queues[prio]);
 		q->queues[prio] = &noop_qdisc;
 	}
+
+	while((tp = q->filter_list) != NULL)
+	{
+		q->filter_list = tp->next;
+		tp->ops->destroy(tp);
+	}
+
 	MOD_DEC_USE_COUNT;
 }