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-rw-r--r--net/sched/cls_fw.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
index 23884ef8b80c..646a730dca93 100644
--- a/net/sched/cls_fw.c
+++ b/net/sched/cls_fw.c
@@ -74,9 +74,13 @@ TC_INDIRECT_SCOPE int fw_classify(struct sk_buff *skb,
}
}
} else {
- struct Qdisc *q = tcf_block_q(tp->chain->block);
+ struct Qdisc *q;
/* Old method: classify the packet using its skb mark. */
+ if (tcf_block_shared(tp->chain->block))
+ return -1;
+
+ q = tcf_block_q(tp->chain->block);
if (id && (TC_H_MAJ(id) == 0 ||
!(TC_H_MAJ(id ^ q->handle)))) {
res->classid = id;