netdev - [PATCH net-next 02/15] sch_netem: Move private queue handler to generic location.

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Message-Id: <20180908.131001.1154573852149335903.davem@davemloft.net>
Date:   Sat, 08 Sep 2018 13:10:01 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     netdev@...r.kernel.org
Subject: [PATCH net-next 02/15] sch_netem: Move private queue handler to
 generic location.


By hand copies of SKB list handlers do not belong in individual packet
schedulers.

Signed-off-by: David S. Miller <davem@...emloft.net>
---
 include/net/sch_generic.h | 11 +++++++++++
 net/sched/sch_netem.c     | 12 +-----------
 2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index bc8f6b0b6610..fdaa5506e6f7 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -851,6 +851,17 @@ static inline int qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch)
 	return NET_XMIT_SUCCESS;
 }
 
+static inline void __qdisc_enqueue_head(struct sk_buff *skb,
+					struct qdisc_skb_head *qh)
+{
+	skb->next = qh->head;
+
+	if (!qh->head)
+		qh->tail = skb;
+	qh->head = skb;
+	qh->qlen++;
+}
+
 static inline struct sk_buff *__qdisc_dequeue_head(struct qdisc_skb_head *qh)
 {
 	struct sk_buff *skb = qh->head;
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index ad18a2052416..b9541ce4d672 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -412,16 +412,6 @@ static struct sk_buff *netem_segment(struct sk_buff *skb, struct Qdisc *sch,
 	return segs;
 }
 
-static void netem_enqueue_skb_head(struct qdisc_skb_head *qh, struct sk_buff *skb)
-{
-	skb->next = qh->head;
-
-	if (!qh->head)
-		qh->tail = skb;
-	qh->head = skb;
-	qh->qlen++;
-}
-
 /*
  * Insert one skb into qdisc.
  * Note: parent depends on return value to account for queue length.
@@ -570,7 +560,7 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch,
 		cb->time_to_send = ktime_get_ns();
 		q->counter = 0;
 
-		netem_enqueue_skb_head(&sch->q, skb);
+		__qdisc_enqueue_head(skb, &sch->q);
 		sch->qstats.requeues++;
 	}
 
-- 
2.17.1