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authorPeter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>2007-07-31 04:13:45 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-31 13:28:20 +0400
commit0773192b0f8914222cd27e682c49f978a6c7860a (patch)
tree0703cbc095825c3839422347c91fa0de03d5e180 /net/sched/sch_prio.c
parentffc8fefaf289fa485bc5c33e71572e6ce559d569 (diff)
downloadlinux-0773192b0f8914222cd27e682c49f978a6c7860a.tar.xz
[NET]: Fix prio_tune() handling of root qdisc.
Fix the check in prio_tune() to see if sch->parent is TC_H_ROOT instead of sch->handle to load or reject the qdisc for multiqueue devices. Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_prio.c')
-rw-r--r--net/sched/sch_prio.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c
index 71bafde353a6..4a49db65772e 100644
--- a/net/sched/sch_prio.c
+++ b/net/sched/sch_prio.c
@@ -238,11 +238,13 @@ static int prio_tune(struct Qdisc *sch, struct rtattr *opt)
/* If we're multiqueue, make sure the number of incoming bands
* matches the number of queues on the device we're associating with.
* If the number of bands requested is zero, then set q->bands to
- * dev->egress_subqueue_count.
+ * dev->egress_subqueue_count. Also, the root qdisc must be the
+ * only one that is enabled for multiqueue, since it's the only one
+ * that interacts with the underlying device.
*/
q->mq = RTA_GET_FLAG(tb[TCA_PRIO_MQ - 1]);
if (q->mq) {
- if (sch->handle != TC_H_ROOT)
+ if (sch->parent != TC_H_ROOT)
return -EINVAL;
if (netif_is_multiqueue(sch->dev)) {
if (q->bands == 0)