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# Direction Constants

Constants indicating package transmission direction.

## Topics

### Getting the Packet Directions

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

The packet is not moving.

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

The packet is moving from the device to the networking stack.

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

The packet is moving from the networking stack to the device.


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