---
title: ReportDataBandwidths
framework: networkingdriverkit
role: symbol
role_heading: Instance Method
path: networkingdriverkit/iousernetworkethernet/reportdatabandwidths-10ssx
---

# ReportDataBandwidths

Reports the input and output bandwidth between the device and your driver to the system.

## Declaration

```occ
virtual kern_return_t ReportDataBandwidths(uint64_t maxInputBandwidth, uint64_t maxOutputBandwidth, uint64_t effectiveInputBandwidth, uint64_t effectiveOutputBandwidth);
```

## Parameters

- `maxInputBandwidth`: The maximum theoretical data rate for receiving data with the current medium, in bits per second.
- `maxOutputBandwidth`: The maximum theoretical data rate for sending data with the current medium, in bits per second.
- `effectiveInputBandwidth`: The effective input bandwidth, in bits per second. If you specify 0, the system sets the effective bandwidth to the same value in maxInputBandwidth.
- `effectiveOutputBandwidth`: The effective output bandwidth, in bits per second. If you specify 0, the system sets the effective bandwidth to the same value in maxOutputBandwidth.

## Return Value

Return Value kIOReturnSuccess on success, or another value if an error occurred.

## See Also

### Reporting the Connection Status

- [ReportLinkStatus](networkingdriverkit/iousernetworkethernet/reportlinkstatus-5cxiq.md)
- [ReportLinkQuality](networkingdriverkit/iousernetworkethernet/reportlinkquality-4noh0.md)
- [IOUserNetworkLinkStatus](networkingdriverkit/iousernetworklinkstatus.md)
- [IOUserNetworkLinkQuality](networkingdriverkit/iousernetworklinkquality.md)