netdev - [PATCH 15/39]: pkt_sched: Add qdisc_tx_is

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Message-Id: <20080703.000354.07929431.davem@davemloft.net>
Date:	Thu, 03 Jul 2008 00:03:54 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	netdev@...r.kernel.org
CC:	vinay@...ux.vnet.ibm.com, krkumar2@...ibm.com, mchan@...adcom.com,
	Matheos.Worku@....COM, linux-wireless@...r.kernel.org
Subject: [PATCH 15/39]: 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@...emloft.net>
---
 include/net/sch_generic.h |    8 ++++++++
 net/ipv6/addrconf.c       |    5 ++---
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 9f5e644..bfb05a7 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -212,6 +212,14 @@ static inline bool qdisc_tx_changing(struct net_device *dev)
 	return (txq->qdisc != txq->qdisc_sleeping);
 }
 
+/* Is the device using the noop qdisc?  */
+static inline bool qdisc_tx_is_noop(struct net_device *dev)
+{
+	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)
 {
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index e6acb89..6dd8c63 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -224,10 +224,9 @@ const struct in6_addr in6addr_linklocal_allnodes = IN6ADDR_LINKLOCAL_ALLNODES_IN
 const struct in6_addr in6addr_linklocal_allrouters = IN6ADDR_LINKLOCAL_ALLROUTERS_INIT;
 
 /* Check if a valid qdisc is available */
-static inline int addrconf_qdisc_ok(struct net_device *dev)
+static inline bool addrconf_qdisc_ok(struct net_device *dev)
 {
-	struct netdev_queue *txq = &dev->tx_queue;
-	return (txq->qdisc != &noop_qdisc);
+	return !qdisc_tx_is_noop(dev);
 }
 
 /* Check if a route is valid prefix route */
-- 
1.5.6

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