pkt_sched: Remove qdisc->ops->requeue() etc.

After implementing qdisc->ops->peek() and changing sch_netem into
classless qdisc there are no more qdisc->ops->requeue() users. This
patch removes this method with its wrappers (qdisc_requeue()), and
also unused qdisc->requeue structure. There are a few minor fixes of
warnings (htb_enqueue()) and comments btw.

The idea to kill ->requeue() and a similar patch were first developed
by David S. Miller.

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

1 files changed, 0 insertions, 18 deletions

diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
index 7abc51454c2d..6a0371c22643 100644
--- a/net/sched/sch_red.c
+++ b/net/sched/sch_red.c
@@ -108,23 +108,6 @@ congestion_drop:
         return NET_XMIT_CN;
 }
 
-static int red_requeue(struct sk_buff *skb, struct Qdisc* sch)
-{
-        struct red_sched_data *q = qdisc_priv(sch);
-        struct Qdisc *child = q->qdisc;
-        int ret;
-
-        if (red_is_idling(&q->parms))
-                red_end_of_idle_period(&q->parms);
-
-        ret = child->ops->requeue(skb, child);
-        if (likely(ret == NET_XMIT_SUCCESS)) {
-                sch->qstats.requeues++;
-                sch->q.qlen++;
-        }
-        return ret;
-}
-
 static struct sk_buff * red_dequeue(struct Qdisc* sch)
 {
         struct sk_buff *skb;
@@ -370,7 +353,6 @@ static struct Qdisc_ops red_qdisc_ops __read_mostly = {
         .enqueue        =       red_enqueue,
         .dequeue        =       red_dequeue,
         .peek           =       red_peek,
-        .requeue        =       red_requeue,
         .drop           =       red_drop,
         .init           =       red_init,
         .reset          =       red_reset,