From f6f9b93f1624206c802ac9162c9302edaf59bfd9 Mon Sep 17 00:00:00 2001 From: Jarek Poplawski Date: Wed, 27 Aug 2008 02:25:17 -0700 Subject: pkt_sched: Fix gen_estimator locks While passing a qdisc root lock to gen_new_estimator() and gen_replace_estimator() dev could be deactivated or even before grafting proper root qdisc as qdisc_sleeping (e.g. qdisc_create), so using qdisc_root_lock() is not enough. This patch adds qdisc_root_sleeping_lock() for this, plus additional checks, where necessary. Signed-off-by: Jarek Poplawski Signed-off-by: David S. Miller --- include/net/sch_generic.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/net/sch_generic.h') diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index b1d2cfea89c..ef8a7e2e12e 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -217,6 +217,14 @@ static inline spinlock_t *qdisc_root_lock(struct Qdisc *qdisc) return qdisc_lock(root); } +static inline spinlock_t *qdisc_root_sleeping_lock(struct Qdisc *qdisc) +{ + struct Qdisc *root = qdisc_root_sleeping(qdisc); + + ASSERT_RTNL(); + return qdisc_lock(root); +} + static inline struct net_device *qdisc_dev(struct Qdisc *qdisc) { return qdisc->dev_queue->dev; -- cgit v1.2.3-70-g09d2