diff options
Diffstat (limited to 'net/sched/sch_tbf.c')
| -rw-r--r-- | net/sched/sch_tbf.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c index cb9711ea8c6..d8e03c74ca7 100644 --- a/net/sched/sch_tbf.c +++ b/net/sched/sch_tbf.c @@ -177,9 +177,9 @@ static int tbf_requeue(struct sk_buff *skb, struct Qdisc* sch) static unsigned int tbf_drop(struct Qdisc* sch) { struct tbf_sched_data *q = qdisc_priv(sch); - unsigned int len; + unsigned int len = 0; - if ((len = q->qdisc->ops->drop(q->qdisc)) != 0) { + if (q->qdisc->ops->drop && (len = q->qdisc->ops->drop(q->qdisc)) != 0) { sch->q.qlen--; sch->qstats.drops++; } @@ -341,13 +341,14 @@ static int tbf_change(struct Qdisc* sch, struct rtattr *opt) if (max_size < 0) goto done; - if (q->qdisc == &noop_qdisc) { + if (qopt->limit > 0) { if ((child = tbf_create_dflt_qdisc(sch->dev, qopt->limit)) == NULL) goto done; } sch_tree_lock(sch); - if (child) q->qdisc = child; + if (child) + qdisc_destroy(xchg(&q->qdisc, child)); q->limit = qopt->limit; q->mtu = qopt->mtu; q->max_size = max_size; |