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authorPatrick McHardy <kaber@trash.net>2009-09-04 06:41:20 +0000
committerDavid S. Miller <davem@davemloft.net>2009-09-06 02:07:05 -0700
commit589983cd21f4a2e4ed74a958805a90fa676845c5 (patch)
tree21ce556958da203400d3e9d30911ff330be39e90
parentaf356afa010f3cd2c8b8fcc3bce90f7a7b7ec02a (diff)
downloadop-kernel-dev-589983cd21f4a2e4ed74a958805a90fa676845c5.zip
op-kernel-dev-589983cd21f4a2e4ed74a958805a90fa676845c5.tar.gz
net_sched: move dev_graft_qdisc() to sch_generic.c
It will be used in a following patch by the multiqueue qdisc. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/sch_generic.h2
-rw-r--r--net/sched/sch_api.c26
-rw-r--r--net/sched/sch_generic.c25
3 files changed, 27 insertions, 26 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index a48a4cc..a92dc62 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -302,6 +302,8 @@ extern void dev_init_scheduler(struct net_device *dev);
extern void dev_shutdown(struct net_device *dev);
extern void dev_activate(struct net_device *dev);
extern void dev_deactivate(struct net_device *dev);
+extern struct Qdisc *dev_graft_qdisc(struct netdev_queue *dev_queue,
+ struct Qdisc *qdisc);
extern void qdisc_reset(struct Qdisc *qdisc);
extern void qdisc_destroy(struct Qdisc *qdisc);
extern void qdisc_tree_decrease_qlen(struct Qdisc *qdisc, unsigned int n);
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 8aa9a0c..d71f12b 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -610,32 +610,6 @@ static u32 qdisc_alloc_handle(struct net_device *dev)
return i>0 ? autohandle : 0;
}
-/* Attach toplevel qdisc to device queue. */
-
-static struct Qdisc *dev_graft_qdisc(struct netdev_queue *dev_queue,
- struct Qdisc *qdisc)
-{
- struct Qdisc *oqdisc = dev_queue->qdisc_sleeping;
- spinlock_t *root_lock;
-
- root_lock = qdisc_lock(oqdisc);
- spin_lock_bh(root_lock);
-
- /* Prune old scheduler */
- if (oqdisc && atomic_read(&oqdisc->refcnt) <= 1)
- qdisc_reset(oqdisc);
-
- /* ... and graft new one */
- if (qdisc == NULL)
- qdisc = &noop_qdisc;
- dev_queue->qdisc_sleeping = qdisc;
- rcu_assign_pointer(dev_queue->qdisc, &noop_qdisc);
-
- spin_unlock_bh(root_lock);
-
- return oqdisc;
-}
-
void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
{
const struct Qdisc_class_ops *cops;
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index a91f079..e7c47ce 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -623,6 +623,31 @@ void qdisc_destroy(struct Qdisc *qdisc)
}
EXPORT_SYMBOL(qdisc_destroy);
+/* Attach toplevel qdisc to device queue. */
+struct Qdisc *dev_graft_qdisc(struct netdev_queue *dev_queue,
+ struct Qdisc *qdisc)
+{
+ struct Qdisc *oqdisc = dev_queue->qdisc_sleeping;
+ spinlock_t *root_lock;
+
+ root_lock = qdisc_lock(oqdisc);
+ spin_lock_bh(root_lock);
+
+ /* Prune old scheduler */
+ if (oqdisc && atomic_read(&oqdisc->refcnt) <= 1)
+ qdisc_reset(oqdisc);
+
+ /* ... and graft new one */
+ if (qdisc == NULL)
+ qdisc = &noop_qdisc;
+ dev_queue->qdisc_sleeping = qdisc;
+ rcu_assign_pointer(dev_queue->qdisc, &noop_qdisc);
+
+ spin_unlock_bh(root_lock);
+
+ return oqdisc;
+}
+
static void attach_one_default_qdisc(struct net_device *dev,
struct netdev_queue *dev_queue,
void *_unused)
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