i40e_usec_delay
i40e_usec_delay(50);
i40e_usec_delay(400);
i40e_usec_delay(50);
i40e_usec_delay(10);
i40e_usec_delay(10);
i40e_usec_delay(10);
i40e_usec_delay(10);
i40e_usec_delay(10);
i40e_usec_delay(10);
i40e_usec_delay(5);