IGC_EITR
IGC_WRITE_REG(hw, IGC_EITR(que->msix), que->eitr_setting);
IGC_WRITE_REG(hw, IGC_EITR(rx_que->msix), newitr);
reg = IGC_READ_REG(hw, IGC_EITR(tque->me));
reg = IGC_READ_REG(hw, IGC_EITR(rque->msix));