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authorPatrick McHardy <trash@kaber.net>2007-07-30 20:11:50 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-31 05:28:19 -0400
commitffc8fefaf289fa485bc5c33e71572e6ce559d569 (patch)
treed96daba747cb1da1d4b352a4572965d2788e2f0a /net/sched
parentbdba91ec70fb5ccbdeb1c7068319adc6ea9e1a7d (diff)
[NET]: Fix sch_api to properly set sch->parent on the root.
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>
Diffstat (limited to 'net/sched')
-rw-r--r--net/sched/sch_api.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 13c09bc32aa3..dee0d5fb39c5 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -380,6 +380,10 @@ void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
380 return; 380 return;
381 while ((parentid = sch->parent)) { 381 while ((parentid = sch->parent)) {
382 sch = qdisc_lookup(sch->dev, TC_H_MAJ(parentid)); 382 sch = qdisc_lookup(sch->dev, TC_H_MAJ(parentid));
383 if (sch == NULL) {
384 WARN_ON(parentid != TC_H_ROOT);
385 return;
386 }
383 cops = sch->ops->cl_ops; 387 cops = sch->ops->cl_ops;
384 if (cops->qlen_notify) { 388 if (cops->qlen_notify) {
385 cl = cops->get(sch, parentid); 389 cl = cops->get(sch, parentid);
@@ -420,8 +424,6 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
420 unsigned long cl = cops->get(parent, classid); 424 unsigned long cl = cops->get(parent, classid);
421 if (cl) { 425 if (cl) {
422 err = cops->graft(parent, cl, new, old); 426 err = cops->graft(parent, cl, new, old);
423 if (new)
424 new->parent = classid;
425 cops->put(parent, cl); 427 cops->put(parent, cl);
426 } 428 }
427 } 429 }
@@ -436,7 +438,8 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
436 */ 438 */
437 439
438static struct Qdisc * 440static struct Qdisc *
439qdisc_create(struct net_device *dev, u32 handle, struct rtattr **tca, int *errp) 441qdisc_create(struct net_device *dev, u32 parent, u32 handle,
442 struct rtattr **tca, int *errp)
440{ 443{
441 int err; 444 int err;
442 struct rtattr *kind = tca[TCA_KIND-1]; 445 struct rtattr *kind = tca[TCA_KIND-1];
@@ -482,6 +485,8 @@ qdisc_create(struct net_device *dev, u32 handle, struct rtattr **tca, int *errp)
482 goto err_out2; 485 goto err_out2;
483 } 486 }
484 487
488 sch->parent = parent;
489
485 if (handle == TC_H_INGRESS) { 490 if (handle == TC_H_INGRESS) {
486 sch->flags |= TCQ_F_INGRESS; 491 sch->flags |= TCQ_F_INGRESS;
487 sch->stats_lock = &dev->ingress_lock; 492 sch->stats_lock = &dev->ingress_lock;
@@ -758,9 +763,11 @@ create_n_graft:
758 if (!(n->nlmsg_flags&NLM_F_CREATE)) 763 if (!(n->nlmsg_flags&NLM_F_CREATE))
759 return -ENOENT; 764 return -ENOENT;
760 if (clid == TC_H_INGRESS) 765 if (clid == TC_H_INGRESS)
761 q = qdisc_create(dev, tcm->tcm_parent, tca, &err); 766 q = qdisc_create(dev, tcm->tcm_parent, tcm->tcm_parent,
767 tca, &err);
762 else 768 else
763 q = qdisc_create(dev, tcm->tcm_handle, tca, &err); 769 q = qdisc_create(dev, tcm->tcm_parent, tcm->tcm_handle,
770 tca, &err);
764 if (q == NULL) { 771 if (q == NULL) {
765 if (err == -EAGAIN) 772 if (err == -EAGAIN)
766 goto replay; 773 goto replay;