network/device/
loopback.rs

1use crate::{GET_KIND, InterfaceKind};
2use file_system::{
3    ControlCommand, ControlCommandIdentifier, DirectBaseOperations, DirectCharacterDevice, Error,
4    MountOperations,
5};
6use shared::AnyByLayout;
7pub use smoltcp::phy::Loopback;
8use smoltcp::phy::Medium;
9
10pub struct LoopbackControllerDevice;
11
12impl DirectBaseOperations for LoopbackControllerDevice {
13    fn read(&self, _: &mut [u8], _: file_system::Size) -> file_system::Result<usize> {
14        Err(Error::UnsupportedOperation)
15    }
16
17    fn write(&self, _: &[u8], _: file_system::Size) -> file_system::Result<usize> {
18        Err(Error::UnsupportedOperation)
19    }
20
21    fn control(
22        &self,
23        command: ControlCommandIdentifier,
24        _: &AnyByLayout,
25        output: &mut AnyByLayout,
26    ) -> file_system::Result<()> {
27        match command {
28            GET_KIND::IDENTIFIER => {
29                let kind = GET_KIND::cast_output(output)?;
30                *kind = InterfaceKind::Ethernet;
31                Ok(())
32            }
33            _ => Err(Error::UnsupportedOperation),
34        }
35    }
36}
37
38impl MountOperations for LoopbackControllerDevice {}
39
40impl DirectCharacterDevice for LoopbackControllerDevice {}
41
42pub fn create_loopback_device() -> (Loopback, LoopbackControllerDevice) {
43    (Loopback::new(Medium::Ethernet), LoopbackControllerDevice)
44}
network/device/loopback.rs

network/device/
loopback.rs
