X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fnet%2Fsched%2Fsch_fifo.c;fp=kernel%2Fnet%2Fsched%2Fsch_fifo.c;h=2e4bd2c0a50c497fbc6cbfe5338cab981559b491;hb=52f993b8e89487ec9ee15a7fb4979e0f09a45b27;hp=2177eac0a61ed00c6c60655f577e0dd816fd2c08;hpb=c189ccac5702322ed843fe17057035b7222a59b6;p=kvmfornfv.git

diff --git a/kernel/net/sched/sch_fifo.c b/kernel/net/sched/sch_fifo.c
index 2177eac0a..2e4bd2c0a 100644
--- a/kernel/net/sched/sch_fifo.c
+++ b/kernel/net/sched/sch_fifo.c
@@ -37,14 +37,18 @@ static int pfifo_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 
 static int pfifo_tail_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 {
+	unsigned int prev_backlog;
+
 	if (likely(skb_queue_len(&sch->q) < sch->limit))
 		return qdisc_enqueue_tail(skb, sch);
 
+	prev_backlog = sch->qstats.backlog;
 	/* queue full, remove one skb to fulfill the limit */
 	__qdisc_queue_drop_head(sch, &sch->q);
 	qdisc_qstats_drop(sch);
 	qdisc_enqueue_tail(skb, sch);
 
+	qdisc_tree_reduce_backlog(sch, 0, prev_backlog - sch->qstats.backlog);
 	return NET_XMIT_CN;
 }