batman-adv: ignore protocol packets if the interface did not enable this protocol
Reported-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
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@ -1186,6 +1186,7 @@ out:
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static int bat_iv_ogm_receive(struct sk_buff *skb,
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struct hard_iface *if_incoming)
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{
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struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
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struct batman_ogm_packet *batman_ogm_packet;
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struct ethhdr *ethhdr;
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int buff_pos = 0, packet_len;
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@ -1196,6 +1197,12 @@ static int bat_iv_ogm_receive(struct sk_buff *skb,
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if (!ret)
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return NET_RX_DROP;
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/* did we receive a B.A.T.M.A.N. IV OGM packet on an interface
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* that does not have B.A.T.M.A.N. IV enabled ?
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*/
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if (bat_priv->bat_algo_ops->bat_ogm_emit != bat_iv_ogm_emit)
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return NET_RX_DROP;
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packet_len = skb_headlen(skb);
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ethhdr = (struct ethhdr *)skb_mac_header(skb);
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packet_buff = skb->data;
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