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Commit ece5d4c7 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

net_sched: fq_codel: defer skb freeing 



Both fq_codel_change() and fq_codel_reset() can use rtnl_kfree_skbs()

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e14ffdfd

net/sched/sch_fq_codel.c

+9 −8
Original line number Diff line number Diff line
@@ -336,6 +336,12 @@ static struct sk_buff *fq_codel_dequeue(struct Qdisc *sch) 
	return skb;

}



static void fq_codel_flow_purge(struct fq_codel_flow *flow)

{

	rtnl_kfree_skbs(flow->head, flow->tail);

	flow->head = NULL;

}



static void fq_codel_reset(struct Qdisc *sch)

{

	struct fq_codel_sched_data *q = qdisc_priv(sch);
@@ -346,18 +352,13 @@ static void fq_codel_reset(struct Qdisc *sch) 
	for (i = 0; i < q->flows_cnt; i++) {

		struct fq_codel_flow *flow = q->flows + i;



		while (flow->head) {

			struct sk_buff *skb = dequeue_head(flow);



			qdisc_qstats_backlog_dec(sch, skb);

			kfree_skb(skb);

		}



		fq_codel_flow_purge(flow);

		INIT_LIST_HEAD(&flow->flowchain);

		codel_vars_init(&flow->cvars);

	}

	memset(q->backlogs, 0, q->flows_cnt * sizeof(u32));

	sch->q.qlen = 0;

	sch->qstats.backlog = 0;

	q->memory_usage = 0;

}
@@ -433,7 +434,7 @@ static int fq_codel_change(struct Qdisc *sch, struct nlattr *opt) 
		struct sk_buff *skb = fq_codel_dequeue(sch);



		q->cstats.drop_len += qdisc_pkt_len(skb);

		kfree_skb(skb);

		rtnl_kfree_skbs(skb, skb);

		q->cstats.drop_count++;

	}

	qdisc_tree_reduce_backlog(sch, q->cstats.drop_count, q->cstats.drop_len);