Enum DeviceControlRequest 

pub enum DeviceControlRequest {
    CreateInterface {
        port: PortId,
        control: ServerEnd<ControlMarker>,
        options: Options,
        control_handle: DeviceControlControlHandle,
    },
    Detach {
        control_handle: DeviceControlControlHandle,
    },
}

Administrative control over an installed device on the network stack.

An instance of DeviceControl maps to an instance of [fuchsia.hardware.network/Session]. All interfaces generated from a single DeviceControl instance share the same Session and set of device buffers; and are therefore subject to backpressure over the same pool of resources.

By the same measure, creating multiple DeviceControl instances attached to the same underlying device causes data copies, because each DeviceControl starts a new Session. For that reason, users should avoid creating multiple DeviceControl instances for the same device and prefer instantiating ports into interfaces from a single DeviceControl instance per device.

This protocol encodes the underlying device’s lifetime in both directions; the device exists iff both ends of the protocol are open. That is:

• Closing the client end causes the device to be removed, including all interfaces created from it.
• Observing a closure of the server end indicates the device (and all interfaces created from it) no longer exists.

Variants

CreateInterface

Creates an interface on the network stack.

• request port the device’s port to instantiate as an interface.
• request control grants access to the created interface.

Fields

port: PortId

control: ServerEnd<ControlMarker>

options: Options

control_handle: DeviceControlControlHandle

Detach

Detaches the client end from the device’s lifetime.

After calling Detach, closing this client end no longer causes the device or any of the interfaces created from it to be removed. Note that the lifetime of any created interface will continue to be coupled with the associated [Control] client end.

Fields

control_handle: DeviceControlControlHandle

Implementations

impl DeviceControlRequest

pub fn into_create_interface( self, ) -> Option<(PortId, ServerEnd<ControlMarker>, Options, DeviceControlControlHandle)>

pub fn into_detach(self) -> Option<DeviceControlControlHandle>

pub fn method_name(&self) -> &'static str

Name of the method defined in FIDL

Trait Implementations

impl Debug for DeviceControlRequest

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.