Function esp_netif_set_route_prio 

pub unsafe extern "C" fn esp_netif_set_route_prio(
    esp_netif: *mut esp_netif_t,
    route_prio: c_int,
) -> c_int

@brief Configures routing priority

@param[in] esp_netif Handle to esp-netif instance @param[in] route_prio Required route priority for esp-netif instance

@return Integer representing the instance’s route-prio, or -1 if invalid parameters