vhost: backend masking support
Support backend guest notifier masking in vhost-net:
create eventfd at device init, when masked,
make vhost use that as eventfd instead of
sending an interrupt.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/hw/vhost_net.c b/hw/vhost_net.c
index ae2785d..d3a04ca 100644
--- a/hw/vhost_net.c
+++ b/hw/vhost_net.c
@@ -109,6 +109,9 @@
(1 << VHOST_NET_F_VIRTIO_NET_HDR);
net->backend = r;
+ net->dev.nvqs = 2;
+ net->dev.vqs = net->vqs;
+
r = vhost_dev_init(&net->dev, devfd, "/dev/vhost-net", force);
if (r < 0) {
goto fail;
@@ -143,9 +146,6 @@
struct vhost_vring_file file = { };
int r;
- net->dev.nvqs = 2;
- net->dev.vqs = net->vqs;
-
r = vhost_dev_enable_notifiers(&net->dev, dev);
if (r < 0) {
goto fail_notifiers;
@@ -200,6 +200,17 @@
vhost_dev_cleanup(&net->dev);
g_free(net);
}
+
+bool vhost_net_virtqueue_pending(VHostNetState *net, int idx)
+{
+ return vhost_virtqueue_pending(&net->dev, idx);
+}
+
+void vhost_net_virtqueue_mask(VHostNetState *net, VirtIODevice *dev,
+ int idx, bool mask)
+{
+ vhost_virtqueue_mask(&net->dev, dev, idx, mask);
+}
#else
struct vhost_net *vhost_net_init(NetClientState *backend, int devfd,
bool force)
@@ -234,4 +245,14 @@
void vhost_net_ack_features(struct vhost_net *net, unsigned features)
{
}
+
+bool vhost_net_virtqueue_pending(VHostNetState *net, int idx)
+{
+ return -ENOSYS;
+}
+
+void vhost_net_virtqueue_mask(VHostNetState *net, VirtIODevice *dev,
+ int idx, bool mask)
+{
+}
#endif
