3 files changed, 6 insertions, 0 deletions
diff --git a/include/hw/compat.h b/include/hw/compat.h
index 4c53d600c1..400c64b318 100644
--- a/include/hw/compat.h
+++ b/include/hw/compat.h
@@ -10,6 +10,10 @@
         .driver   = "intel-iommu",\
         .property = "pt",\
         .value    = "off",\
+    },{\
+        .driver   = "virtio-net-device",\
+        .property = "x-mtu-bypass-backend",\
+        .value    = "off",\
     },
 
 #define HW_COMPAT_2_8 \
diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h
index 1eec9a2da3..602b4868d4 100644
--- a/include/hw/virtio/virtio-net.h
+++ b/include/hw/virtio/virtio-net.h
@@ -97,6 +97,7 @@ typedef struct VirtIONet {
     QEMUTimer *announce_timer;
     int announce_counter;
     bool needs_vnet_hdr_swap;
+    bool mtu_bypass_backend;
 } VirtIONet;
 
 void virtio_net_set_netclient_name(VirtIONet *n, const char *name,
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index 7b6edbafd7..80c45c321e 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -79,6 +79,7 @@ struct VirtIODevice
     uint16_t queue_sel;
     uint64_t guest_features;
     uint64_t host_features;
+    uint64_t backend_features;
     size_t config_len;
     void *config;
     uint16_t config_vector;