1 files changed, 19 insertions, 0 deletions
diff --git a/src/net.rs b/src/net.rs
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+++ b/src/net.rs
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+// Copyright (C) 2021 Alibaba Cloud Computing. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0 or BSD-3-Clause
+
+//! Trait to control vhost-net backend drivers.
+
+use std::fs::File;
+
+use crate::backend::VhostBackend;
+use crate::Result;
+
+/// Trait to control vhost-net backend drivers.
+pub trait VhostNet: VhostBackend {
+    /// Set fd as VHOST_NET backend.
+    ///
+    /// # Arguments
+    /// * `queue_index` - Index of the virtqueue
+    /// * `fd` - The file descriptor which servers as the backend
+    fn set_backend(&self, queue_idx: usize, fd: Option<&File>) -> Result<()>;
+}