vhost-vdpa: negotiate VIRTIO_NET_F_STATUS with driver

Vendor driver may not support or implement config
interrupt delivery for link status notifications.
In this event, vendor driver is expected to NACK
the feature, but guest will keep link always up.

Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
Message-Id: <1601582985-14944-1-git-send-email-si-wei.liu@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index e2b3ba85bf4f718d0adc326f33d1999ba570676f..99c476db8cc66ff582ce2e5030bf46efc4098e7f 100644 (file)
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -55,6 +55,7 @@ const int vdpa_feature_bits[] = {
     VIRTIO_F_IOMMU_PLATFORM,
     VIRTIO_F_RING_PACKED,
     VIRTIO_NET_F_GUEST_ANNOUNCE,
+    VIRTIO_NET_F_STATUS,
     VHOST_INVALID_FEATURE_BIT
 };