message: Net: Feature-gate is_link_up
diff: @@ -705,6 +705,7 @@ impl VirtioNetDriver {
  /// Returns the links status.
  /// If feature VIRTIO_NET_F_STATUS has not been negotiated, then we assume the link is up!
  + #[cfg(feature = "pci")]
  pub fn is_link_up(&self) -> bool {
  if self
  .dev_cfg
  