batman-adv: use VLAN_ETH_HLEN instead of sizeof(struct vlan_eth_hdr)

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 264de88..70da18a 100644 (file)
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -1380,7 +1380,7 @@ int batadv_bla_is_backbone_gw(struct sk_buff *skb,
        ethhdr = (struct ethhdr *)(((uint8_t *)skb->data) + hdr_size);
 
        if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) {
-               if (!pskb_may_pull(skb, hdr_size + sizeof(struct vlan_ethhdr)))
+               if (!pskb_may_pull(skb, hdr_size + VLAN_ETH_HLEN))
                        return 0;
 
                vhdr = (struct vlan_ethhdr *)(skb->data + hdr_size);