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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>
This commit is contained in:
Miaohe Lin 2020-08-01 17:36:05 +08:00 committed by David S. Miller
parent c15fc199b3
commit 2f631133c4
1 changed files with 1 additions and 2 deletions
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3
net/core/skbuff.c
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@ -3758,7 +3758,6 @@ struct sk_buff *skb_segment(struct sk_buff *head_skb,
int err = -ENOMEM;
int i = 0;
int pos;
int dummy;
if (list_skb && !list_skb->head_frag && skb_headlen(list_skb) &&
(skb_shinfo(head_skb)->gso_type & SKB_GSO_DODGY)) {
@ -3780,7 +3779,7 @@ struct sk_buff *skb_segment(struct sk_buff *head_skb,
}
__skb_push(head_skb, doffset);
proto = skb_network_protocol(head_skb, &dummy);
proto = skb_network_protocol(head_skb, NULL);
if (unlikely(!proto))
return ERR_PTR(-EINVAL);