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Diffstat (limited to 'net')
-rw-r--r--net/sched/sch_generic.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 137db1cbde85..ac28f6a5d70e 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -46,6 +46,8 @@ EXPORT_SYMBOL(default_qdisc_ops);
* - updates to tree and tree walking are only done under the rtnl mutex.
*/
+#define SKB_XOFF_MAGIC ((struct sk_buff *)1UL)
+
static inline struct sk_buff *__skb_dequeue_bad_txq(struct Qdisc *q)
{
const struct netdev_queue *txq = q->dev_queue;
@@ -71,7 +73,7 @@ static inline struct sk_buff *__skb_dequeue_bad_txq(struct Qdisc *q)
q->q.qlen--;
}
} else {
- skb = NULL;
+ skb = SKB_XOFF_MAGIC;
}
}
@@ -253,8 +255,11 @@ validate:
return skb;
skb = qdisc_dequeue_skb_bad_txq(q);
- if (unlikely(skb))
+ if (unlikely(skb)) {
+ if (skb == SKB_XOFF_MAGIC)
+ return NULL;
goto bulk;
+ }
skb = q->dequeue(q);
if (skb) {
bulk: