linux-imx

     * We have most probably received already a reply earlier. Delivering

     * this frame would lead to doubled receive of an ARP reply.

     */

    dat_entry = batadv_dat_entry_hash_find(bat_priv, ip_src, vid);

    if (dat_entry && batadv_compare_eth(hw_src, dat_entry->mac_addr)) {

        batadv_dbg(BATADV_DBG_DAT, bat_priv, "Doubled ARP reply removed: ARP MSG = [src: %pM-%pI4 dst: %pM-%pI4]; dat_entry: %pM-%pI4\n",

               hw_src, &ip_src, hw_dst, &ip_dst,

               dat_entry->mac_addr, &dat_entry->ip);

        dropped = true;

    }

​

    /* Update our internal cache with both the IP addresses the node got

     * within the ARP reply

     */

    batadv_dat_entry_add(bat_priv, ip_src, hw_src, vid);

    batadv_dat_entry_add(bat_priv, ip_dst, hw_dst, vid);

​

    /* If BLA is enabled, only forward ARP replies if we have claimed the

     * source of the ARP reply or if no one else of the same backbone has

     * already claimed that client. This prevents that different gateways

     * to the same backbone all forward the ARP reply leading to multiple

     * replies in the backbone.

     */

    if (!batadv_bla_check_claim(bat_priv, hw_src, vid)) {

        batadv_dbg(BATADV_DBG_DAT, bat_priv,

               "Device %pM claimed by another backbone gw. Drop ARP reply.\n",

               hw_src);