On Tue, 2015-07-21 at 11:12 -0700, Cong Wang wrote:
> > - kfree_skb(skb);
> > + INIT_LIST_HEAD(&q->new_flows);
> > + INIT_LIST_HEAD(&q->old_flows);
> > + for (i = 0; i < q->flows_cnt; i++) {
> > + struct fq_codel_flow *flow = q->flows + i;
> > +
> > + while (flow->head)
> > + kfree_skb(dequeue_head(flow));
> > +
> > + INIT_LIST_HEAD(&flow->flowchain);
>
>
> You probably need to call codel_vars_init(&flow->cvars) as well.
It is not necessary : flow->cvars only matter in the event of a dequeue,
but whole qdisc is dismantled and no packet will be dequeued.
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