From 7f9cdf1183992807639cb2006c4bf1282b18376c Mon Sep 17 00:00:00 2001
From: Rob Bradford <robert.bradford@intel.com>
Date: Wed, 16 Dec 2020 17:31:10 +0000
Subject: [PATCH] vmm: device_manager: Create a virtio-net device from TAP fd

If a TAP fd is supplied then create an virtio-net device using that TAP
fd.

Fixes: #2052

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
---
 vmm/src/device_manager.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/vmm/src/device_manager.rs b/vmm/src/device_manager.rs
index 621bd526f..fae3835df 100644
--- a/vmm/src/device_manager.rs
+++ b/vmm/src/device_manager.rs
@@ -1809,6 +1809,18 @@ impl DeviceManager {
                     )
                     .map_err(DeviceManagerError::CreateVirtioNet)?,
                 ))
+            } else if let Some(fd) = net_cfg.fd {
+                Arc::new(Mutex::new(
+                    virtio_devices::Net::from_tap_fd(
+                        id.clone(),
+                        fd,
+                        Some(net_cfg.mac),
+                        net_cfg.iommu,
+                        net_cfg.queue_size,
+                        self.seccomp_action.clone(),
+                    )
+                    .map_err(DeviceManagerError::CreateVirtioNet)?,
+                ))
             } else {
                 Arc::new(Mutex::new(
                     virtio_devices::Net::new(