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[NET]: Fix sch_api to properly set sch->parent on the root.

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Fix sch_api to correctly set sch->parent for both ingress and egress
qdiscs in qdisc_create().

Signed-off-by: Patrick McHardy <trash@kaber.net>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2007-07-30 17:11:50 -07:00 committed by David S. Miller
parent bdba91ec70
commit ffc8fefaf2
1 changed files with 12 additions and 5 deletions
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17
net/sched/sch_api.c
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@ -380,6 +380,10 @@ void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
return;
while ((parentid = sch->parent)) {
sch = qdisc_lookup(sch->dev, TC_H_MAJ(parentid));
if (sch == NULL) {
WARN_ON(parentid != TC_H_ROOT);
return;
}
cops = sch->ops->cl_ops;
if (cops->qlen_notify) {
cl = cops->get(sch, parentid);
@ -420,8 +424,6 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
unsigned long cl = cops->get(parent, classid);
if (cl) {
err = cops->graft(parent, cl, new, old);
if (new)
new->parent = classid;
cops->put(parent, cl);
}
}
@ -436,7 +438,8 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
*/
static struct Qdisc *
qdisc_create(struct net_device *dev, u32 handle, struct rtattr **tca, int *errp)
qdisc_create(struct net_device *dev, u32 parent, u32 handle,
struct rtattr **tca, int *errp)
{
int err;
struct rtattr *kind = tca[TCA_KIND-1];
@ -482,6 +485,8 @@ qdisc_create(struct net_device *dev, u32 handle, struct rtattr **tca, int *errp)
goto err_out2;
}
sch->parent = parent;
if (handle == TC_H_INGRESS) {
sch->flags |= TCQ_F_INGRESS;
sch->stats_lock = &dev->ingress_lock;
@ -758,9 +763,11 @@ create_n_graft:
if (!(n->nlmsg_flags&NLM_F_CREATE))
return -ENOENT;
if (clid == TC_H_INGRESS)
q = qdisc_create(dev, tcm->tcm_parent, tca, &err);
q = qdisc_create(dev, tcm->tcm_parent, tcm->tcm_parent,
tca, &err);
else
q = qdisc_create(dev, tcm->tcm_handle, tca, &err);
q = qdisc_create(dev, tcm->tcm_parent, tcm->tcm_handle,
tca, &err);
if (q == NULL) {
if (err == -EAGAIN)
goto replay;