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[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>
This commit is contained in:
Peter P Waskiewicz Jr 2007-07-30 17:13:45 -07:00 committed by David S. Miller
parent ffc8fefaf2
commit 0773192b0f
1 changed files with 4 additions and 2 deletions
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6
net/sched/sch_prio.c
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@ -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)