pkt_sched: Add qdisc->ops->peek() implementation.

Add qdisc->ops->peek() implementation for work-conserving qdiscs.
With feedback from Patrick McHardy.

Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index a11959908d9a..2898d9dc31eb 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -541,6 +541,7 @@ static struct Qdisc_ops tfifo_qdisc_ops __read_mostly = {
         .priv_size      =       sizeof(struct fifo_sched_data),
         .enqueue        =       tfifo_enqueue,
         .dequeue        =       qdisc_dequeue_head,
+        .peek           =       qdisc_peek_head,
         .requeue        =       qdisc_requeue,
         .drop           =       qdisc_queue_drop,
         .init           =       tfifo_init,