Add traits to support vhost backend devices

These interfaces are derived from the firecracker and crosvm projects.
They may be extended when enable support of vhost-user protocol.

Signed-off-by: Liu Jiang <gerry@linux.alibaba.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 05dd9ea..2eba08a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,4 +5,10 @@ authors = ["Liu Jiang <gerry@linux.alibaba.com>"]
 repository = "https://github.com/rust-vmm/vhost"
 license = "Apache-2.0 or BSD-3-Clause"
 
+[features]
+default = []
+vhost-vsock = []
+
 [dependencies]
+vmm-sys-util = ">=0.3.1"
+vm-memory = { version = "0.2.0", optional = true }