From: Konstantin Khlebnikov Date: Tue, 15 Aug 2017 13:37:04 +0000 (+0300) Subject: net_sched/sfq: update hierarchical backlog when drop packet X-Git-Tag: v4.13-rc6~23^2~4 X-Git-Url: https://git.kernelconcepts.de/?a=commitdiff_plain;h=325d5dc3f7e7c2840b65e4a2988c082c2c0025c5;p=karo-tx-linux.git net_sched/sfq: update hierarchical backlog when drop packet When sfq_enqueue() drops head packet or packet from another queue it have to update backlog at upper qdiscs too. Fixes: 2ccccf5fb43f ("net_sched: update hierarchical backlog too") Signed-off-by: Konstantin Khlebnikov Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c index f80ea2cc5f1f..82469ef9655e 100644 --- a/net/sched/sch_sfq.c +++ b/net/sched/sch_sfq.c @@ -437,6 +437,7 @@ congestion_drop: qdisc_drop(head, sch, to_free); slot_queue_add(slot, skb); + qdisc_tree_reduce_backlog(sch, 0, delta); return NET_XMIT_CN; } @@ -468,8 +469,10 @@ enqueue: /* Return Congestion Notification only if we dropped a packet * from this flow. */ - if (qlen != slot->qlen) + if (qlen != slot->qlen) { + qdisc_tree_reduce_backlog(sch, 0, dropped - qdisc_pkt_len(skb)); return NET_XMIT_CN; + } /* As we dropped a packet, better let upper stack know this */ qdisc_tree_reduce_backlog(sch, 1, dropped);