1 files changed, 12 insertions, 0 deletions

diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index fe1508ef0d3d..198b83d42ba8 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -391,8 +391,19 @@ sfq_requeue(struct sk_buff *skb, struct Qdisc *sch)
         return NET_XMIT_CN;
 }
 
+static struct sk_buff *
+sfq_peek(struct Qdisc *sch)
+{
+        struct sfq_sched_data *q = qdisc_priv(sch);
+        sfq_index a;
 
+        /* No active slots */
+        if (q->tail == SFQ_DEPTH)
+                return NULL;
 
+        a = q->next[q->tail];
+        return skb_peek(&q->qs[a]);
+}
 
 static struct sk_buff *
 sfq_dequeue(struct Qdisc *sch)
@@ -624,6 +635,7 @@ static struct Qdisc_ops sfq_qdisc_ops __read_mostly = {
         .priv_size      =       sizeof(struct sfq_sched_data),
         .enqueue        =       sfq_enqueue,
         .dequeue        =       sfq_dequeue,
+        .peek           =       sfq_peek,
         .requeue        =       sfq_requeue,
         .drop           =       sfq_drop,
         .init           =       sfq_init,