diff options
author | Jarek Poplawski <jarkao2@gmail.com> | 2009-09-15 05:53:07 -0400 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2009-09-15 05:53:07 -0400 |
commit | 926e61b7c44db83013159ac2f74bccd451607b5a (patch) | |
tree | 512b532e22d4374948e0d149902304edfbef7e25 /net/sched/sch_mq.c | |
parent | ca519274d537706b6fb1e3e91238d34a23320584 (diff) |
pkt_sched: Fix tx queue selection in tc_modify_qdisc
After the recent mq change there is the new select_queue qdisc class
method used in tc_modify_qdisc, but it works OK only for direct child
qdiscs of mq qdisc. Grandchildren always get the first tx queue, which
would give wrong qdisc_root etc. results (e.g. for sch_htb as child of
sch_prio). This patch fixes it by using parent's dev_queue for such
grandchildren qdiscs. The select_queue method's return type is changed
BTW.
With feedback from: Patrick McHardy <kaber@trash.net>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_mq.c')
-rw-r--r-- | net/sched/sch_mq.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/net/sched/sch_mq.c b/net/sched/sch_mq.c index dd5ee022f1f7..600c50143cc7 100644 --- a/net/sched/sch_mq.c +++ b/net/sched/sch_mq.c | |||
@@ -125,13 +125,18 @@ static struct netdev_queue *mq_queue_get(struct Qdisc *sch, unsigned long cl) | |||
125 | return netdev_get_tx_queue(dev, ntx); | 125 | return netdev_get_tx_queue(dev, ntx); |
126 | } | 126 | } |
127 | 127 | ||
128 | static unsigned int mq_select_queue(struct Qdisc *sch, struct tcmsg *tcm) | 128 | static struct netdev_queue *mq_select_queue(struct Qdisc *sch, |
129 | struct tcmsg *tcm) | ||
129 | { | 130 | { |
130 | unsigned int ntx = TC_H_MIN(tcm->tcm_parent); | 131 | unsigned int ntx = TC_H_MIN(tcm->tcm_parent); |
132 | struct netdev_queue *dev_queue = mq_queue_get(sch, ntx); | ||
131 | 133 | ||
132 | if (!mq_queue_get(sch, ntx)) | 134 | if (!dev_queue) { |
133 | return 0; | 135 | struct net_device *dev = qdisc_dev(sch); |
134 | return ntx - 1; | 136 | |
137 | return netdev_get_tx_queue(dev, 0); | ||
138 | } | ||
139 | return dev_queue; | ||
135 | } | 140 | } |
136 | 141 | ||
137 | static int mq_graft(struct Qdisc *sch, unsigned long cl, struct Qdisc *new, | 142 | static int mq_graft(struct Qdisc *sch, unsigned long cl, struct Qdisc *new, |