diff options
| -rw-r--r-- | net/sched/sch_cbq.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c index ba82dfab6043..f79a4f3d0a95 100644 --- a/net/sched/sch_cbq.c +++ b/net/sched/sch_cbq.c @@ -371,8 +371,6 @@ static void cbq_deactivate_class(struct cbq_class *this) return; } } - - cl = cl_prev->next_alive; return; } } while ((cl_prev = cl) != q->active[prio]); @@ -1258,6 +1256,8 @@ static unsigned int cbq_drop(struct Qdisc* sch) do { if (cl->q->ops->drop && (len = cl->q->ops->drop(cl->q))) { sch->q.qlen--; + if (!cl->q->q.qlen) + cbq_deactivate_class(cl); return len; } } while ((cl = cl->next_alive) != cl_head); @@ -1685,8 +1685,7 @@ static int cbq_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new, #endif } sch_tree_lock(sch); - *old = cl->q; - cl->q = new; + *old = xchg(&cl->q, new); qdisc_tree_decrease_qlen(*old, (*old)->q.qlen); qdisc_reset(*old); sch_tree_unlock(sch); @@ -1704,6 +1703,14 @@ cbq_leaf(struct Qdisc *sch, unsigned long arg) return cl ? cl->q : NULL; } +static void cbq_qlen_notify(struct Qdisc *sch, unsigned long arg) +{ + struct cbq_class *cl = (struct cbq_class *)arg; + + if (cl->q->q.qlen == 0) + cbq_deactivate_class(cl); +} + static unsigned long cbq_get(struct Qdisc *sch, u32 classid) { struct cbq_sched_data *q = qdisc_priv(sch); @@ -1988,12 +1995,17 @@ static int cbq_delete(struct Qdisc *sch, unsigned long arg) { struct cbq_sched_data *q = qdisc_priv(sch); struct cbq_class *cl = (struct cbq_class*)arg; + unsigned int qlen; if (cl->filters || cl->children || cl == &q->link) return -EBUSY; sch_tree_lock(sch); + qlen = cl->q->q.qlen; + qdisc_reset(cl->q); + qdisc_tree_decrease_qlen(cl->q, qlen); + if (cl->next_alive) cbq_deactivate_class(cl); @@ -2084,6 +2096,7 @@ static void cbq_walk(struct Qdisc *sch, struct qdisc_walker *arg) static struct Qdisc_class_ops cbq_class_ops = { .graft = cbq_graft, .leaf = cbq_leaf, + .qlen_notify = cbq_qlen_notify, .get = cbq_get, .put = cbq_put, .change = cbq_change_class, |