batadv_find_router
neigh_curr = batadv_find_router(bat_priv, curr_gw->orig_node,
neigh_old = batadv_find_router(bat_priv, orig_dst_node, NULL);
neigh_node = batadv_find_router(bat_priv, orig_node, if_outgoing);
batadv_find_router(struct batadv_priv *bat_priv,
neigh_node = batadv_find_router(bat_priv, orig_node, recv_if);