pkt_sched: Add qdisc_tx_is_noop() helper and use in IPV6.
This indicates if the NOOP scheduler is what is active for TX on a
given device.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index bf8f726..5ba66b5 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -250,6 +250,14 @@
return (txq->qdisc != txq->qdisc_sleeping);
}
+/* Is the device using the noop qdisc? */
+static inline bool qdisc_tx_is_noop(const struct net_device *dev)
+{
+ const struct netdev_queue *txq = &dev->tx_queue;
+
+ return (txq->qdisc == &noop_qdisc);
+}
+
static inline int __qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch,
struct sk_buff_head *list)
{