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# Link Quality Constants

Constants describing the quality of the link between the device and your driver.

## Topics

### Getting the Link Quality

[`kIOUserNetworkLinkQualityOff`](/documentation/NetworkingDriverKit/kIOUserNetworkLinkQualityOff)

[`kIOUserNetworkLinkQualityUnknown`](/documentation/NetworkingDriverKit/kIOUserNetworkLinkQualityUnknown)

[`kIOUserNetworkLinkQualityBad`](/documentation/NetworkingDriverKit/kIOUserNetworkLinkQualityBad)

[`kIOUserNetworkLinkQualityPoor`](/documentation/NetworkingDriverKit/kIOUserNetworkLinkQualityPoor)

[`kIOUserNetworkLinkQualityGood`](/documentation/NetworkingDriverKit/kIOUserNetworkLinkQualityGood)


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