net: Pass NULL to skb_network_protocol() when we don't care about vlan depth
When we don't care about vlan depth, we could pass NULL instead of the
address of a unused local variable to skb_network_protocol() as a param.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/dev.c b/net/core/dev.c
index fe2e387..38a6371 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3454,10 +3454,9 @@ static netdev_features_t net_mpls_features(struct sk_buff *skb,
static netdev_features_t harmonize_features(struct sk_buff *skb,
netdev_features_t features)
{
- int tmp;
__be16 type;
- type = skb_network_protocol(skb, &tmp);
+ type = skb_network_protocol(skb, NULL);
features = net_mpls_features(skb, features, type);
if (skb->ip_summed != CHECKSUM_NONE &&