- * Retrieve number of available registers for access
- *
- * @param port_id
- * The port identifier of the Ethernet device.
- * @return
- * - (>=0) number of registers if successful.
- * - (-ENOTSUP) if hardware doesn't support.
- * - (-ENODEV) if *port_id* invalid.
- * - others depends on the specific operations implementation.
- */
-int rte_eth_dev_get_reg_length(uint8_t port_id);
-
-/**
- * Retrieve device registers and register attributes