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authorPatrick McHardy <kaber@trash.net>2006-03-20 22:00:49 -0500
committerDavid S. Miller <davem@davemloft.net>2006-03-20 22:00:49 -0500
commit6d037a26f08711a222ed0d3d12b09e93eed7d3e8 (patch)
treea200247459a6a378a1fb24847d383bddb09f5b67 /net/sched/sch_tbf.c
parenta85d771e32f9724b61a68748cc667d1e11fe3478 (diff)
[PKT_SCHED]: Qdisc drop operation is optional
The drop operation is optional and qdiscs must check if childs support it. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_tbf.c')
-rw-r--r--net/sched/sch_tbf.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index cb9711ea8c6c..e9e473457361 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)
177static unsigned int tbf_drop(struct Qdisc* sch) 177static unsigned int tbf_drop(struct Qdisc* sch)
178{ 178{
179 struct tbf_sched_data *q = qdisc_priv(sch); 179 struct tbf_sched_data *q = qdisc_priv(sch);
180 unsigned int len; 180 unsigned int len = 0;
181 181
182 if ((len = q->qdisc->ops->drop(q->qdisc)) != 0) { 182 if (q->qdisc->ops->drop && (len = q->qdisc->ops->drop(q->qdisc)) != 0) {
183 sch->q.qlen--; 183 sch->q.qlen--;
184 sch->qstats.drops++; 184 sch->qstats.drops++;
185 } 185 }