+void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
+{
+ struct Qdisc_class_ops *cops;
+ unsigned long cl;
+ u32 parentid;
+
+ if (n == 0)
+ return;
+ while ((parentid = sch->parent)) {
+ sch = __qdisc_lookup(sch->dev, TC_H_MAJ(parentid));
+ cops = sch->ops->cl_ops;
+ if (cops->qlen_notify) {
+ cl = cops->get(sch, parentid);
+ cops->qlen_notify(sch, cl);
+ cops->put(sch, cl);
+ }
+ sch->q.qlen -= n;
+ }
+}
+EXPORT_SYMBOL(qdisc_tree_decrease_qlen);