vlan: Update skb->mac_header in __vlan_put_tag().
After moving mac addresses in __vlan_put_tag() skb->mac_header needs to be updated. Reported-by: Karl Hiramoto <karl@hiramoto.org> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -210,6 +210,7 @@ static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, u16 vlan_tci)
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/* Move the mac addresses to the beginning of the new header. */
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memmove(skb->data, skb->data + VLAN_HLEN, 2 * VLAN_ETH_ALEN);
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skb->mac_header -= VLAN_HLEN;
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/* first, the ethernet type */
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veth->h_vlan_proto = htons(ETH_P_8021Q);
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