Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / net / sched / sch_fifo.c

diff --git a/kernel/net/sched/sch_fifo.c b/kernel/net/sched/sch_fifo.c
index 2177eac..2e4bd2c 100644 (file)
--- 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;
 }