From: Si-Wei Liu <si-wei.liu@oracle.com>
Date: Thu, 1 Oct 2020 20:09:45 +0000 (-0400)
Subject: vhost-vdpa: negotiate VIRTIO_NET_F_STATUS with driver
X-Git-Tag: v5.2.0-rc0~12^2~14
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9aa47edd4ee69fa0628c5f9adb52d5050a5bce6a;p=thirdparty%2Fqemu.git

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 e2b3ba85bf4..99c476db8cc 100644
--- 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
 };