Bug #216 » 0001-batman-adv-avoid-DAT-to-mess-up-LAN-state.patch
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* @bat_priv: the bat priv with all the soft interface information
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* @skb: packet to check
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* @hdr_size: size of the encapsulation header
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*
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* Returns true if the packet was snooped and consumed by DAT. False if the
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* packet has to be delivered to the interface
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*/
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bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
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struct sk_buff *skb, int hdr_size)
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| ... | ... | |
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uint16_t type;
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__be32 ip_src, ip_dst;
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uint8_t *hw_src, *hw_dst;
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bool ret = false;
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bool dropped = false;
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unsigned short vid;
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if (!atomic_read(&bat_priv->distributed_arp_table))
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| ... | ... | |
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/* if this REPLY is directed to a client of mine, let's deliver the
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* packet to the interface
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*/
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ret = !batadv_is_my_client(bat_priv, hw_dst, vid);
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dropped = !batadv_is_my_client(bat_priv, hw_dst, vid);
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/* if this REPLY is sent on behalf of a client of mine, let's drop the
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* packet because the client will reply by itself
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*/
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dropped |= batadv_is_my_client(bat_priv, hw_src, vid);
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out:
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if (ret)
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if (dropped)
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kfree_skb(skb);
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/* if ret == false -> packet has to be delivered to the interface */
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return ret;
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/* if dropped == false -> deliver to the interface */
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return dropped;
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}
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/**
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