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authorJarek Poplawski <jarkao2@gmail.com>2008-11-05 16:02:34 -0800
committerDavid S. Miller <davem@davemloft.net>2008-11-05 16:02:34 -0800
commit61c9eaf90081cbe6dc4f389e0056bff76eca19ec (patch)
tree4122787f6a424c75de5f7562e84ccf34ca37251a
parent0a36b345ab99d6b3c96999e7e3b79bd243cf9bf7 (diff)
pkt_sched: Fix qdisc len in qdisc_peek_dequeued()
A packet dequeued and stored as gso_skb in qdisc_peek_dequeued() should be seen as part of the queue for sch->q.qlen queries until it's really dequeued with qdisc_dequeue_peeked(), so qlen needs additional updating in these functions. (Updating qstats.backlog shouldn't matter here.) Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/sch_generic.h12
1 files changed, 9 insertions, 3 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 9dcb5bfe094..64ae1ba9f55 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -442,8 +442,12 @@ static inline struct sk_buff *qdisc_peek_head(struct Qdisc *sch)
static inline struct sk_buff *qdisc_peek_dequeued(struct Qdisc *sch)
{
/* we can reuse ->gso_skb because peek isn't called for root qdiscs */
- if (!sch->gso_skb)
+ if (!sch->gso_skb) {
sch->gso_skb = sch->dequeue(sch);
+ if (sch->gso_skb)
+ /* it's still part of the queue */
+ sch->q.qlen++;
+ }
return sch->gso_skb;
}
@@ -453,10 +457,12 @@ static inline struct sk_buff *qdisc_dequeue_peeked(struct Qdisc *sch)
{
struct sk_buff *skb = sch->gso_skb;
- if (skb)
+ if (skb) {
sch->gso_skb = NULL;
- else
+ sch->q.qlen--;
+ } else {
skb = sch->dequeue(sch);
+ }
return skb;
}