Set new status of the Ethernet link flow

control test

Set new status of the Ethernet link flow control for Ethernet device

Make sure that it is possible to set new status of the Ethernet link flow control

1. Set flow control on the partner to 'autoneg=on, rx=on, tx=on'

2. Initialize EAL, prepare ethdev_state Ethernet device state

3. Get current flow control settings on port iut_port

4. Set new flow control settings on port iut_port

5. Await link renegotiation

6. Get flow control settings

7. Compare flow control settings with written ones

8. If device is already started, stop it

9. Start the device to check settings once again

10. Get flow control settings once again

11. Compare obtained flow control settings vs previously obtained

Parameters:

ethdev_state	The state of Ethernet device
fc_mode	The Flow Control mode of Ethernet device
fc_conf_elem	The Flow Control configuration element of Ethernet device to iterate