virtio: fix to use chained descriptors when missing indirect descriptor

[vpp.git] / src / vnet / devices / virtio / pci.c

diff --git a/src/vnet/devices/virtio/pci.c b/src/vnet/devices/virtio/pci.c
index 5482822..c7398c9 100644 (file)
--- a/src/vnet/devices/virtio/pci.c
+++ b/src/vnet/devices/virtio/pci.c
@@ -1052,6 +1052,17 @@ virtio_pci_device_init (vlib_main_t * vm, virtio_if_t * vif,
    * read device features and negotiate (user) requested features
    */
   virtio_pci_read_device_feature (vm, vif);
+  if ((vif->remote_features & VIRTIO_FEATURE (VIRTIO_RING_F_INDIRECT_DESC)) ==
+      0)
+    {
+      virtio_log_warning (vif, "error encountered: vhost-net backend doesn't "
+                         "support VIRTIO_RING_F_INDIRECT_DESC features");
+    }
+  if ((vif->remote_features & VIRTIO_FEATURE (VIRTIO_NET_F_MRG_RXBUF)) == 0)
+    {
+      virtio_log_warning (vif, "error encountered: vhost-net backend doesn't "
+                         "support VIRTIO_NET_F_MRG_RXBUF features");
+    }
   virtio_negotiate_features (vm, vif, args->features);
 
   /*