vring: make vring_enable_notification return void

Make the API more similar to the regular virtqueue API.  This will
help when modifying the code to not use vring.c anymore.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>

diff --git a/hw/block/dataplane/virtio-blk.c b/hw/block/dataplane/virtio-blk.c
index 0d9978109cb86dd57ba8bfdfe6f2ed1307233f5e..03b81bc48d9eff1117276797d2f5f9c1039dadc7 100644 (file)
--- a/hw/block/dataplane/virtio-blk.c
+++ b/hw/block/dataplane/virtio-blk.c
@@ -128,7 +128,8 @@ static void handle_notify(EventNotifier *e)
             /* Re-enable guest->host notifies and stop processing the vring.
              * But if the guest has snuck in more descriptors, keep processing.
              */
-            if (vring_enable_notification(s->vdev, &s->vring)) {
+            vring_enable_notification(s->vdev, &s->vring);
+            if (!vring_more_avail(s->vdev, &s->vring)) {
                 break;
             }
         } else { /* fatal error */

diff --git a/hw/virtio/dataplane/vring.c b/hw/virtio/dataplane/vring.c
index 4308d9f055b6af796bf8bf61ffd870251f509d98..157e8b859cba3b87e30439f57f0d8ea69a27e6b1 100644 (file)
--- a/hw/virtio/dataplane/vring.c
+++ b/hw/virtio/dataplane/vring.c
@@ -175,7 +175,7 @@ void vring_disable_notification(VirtIODevice *vdev, Vring *vring)
  *
  * Return true if the vring is empty, false if there are more requests.
  */
-bool vring_enable_notification(VirtIODevice *vdev, Vring *vring)
+void vring_enable_notification(VirtIODevice *vdev, Vring *vring)
 {
     if (virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) {
         vring_avail_event(&vring->vr) = vring->vr.avail->idx;
@@ -183,7 +183,6 @@ bool vring_enable_notification(VirtIODevice *vdev, Vring *vring)
         vring_clear_used_flags(vdev, vring, VRING_USED_F_NO_NOTIFY);
     }
     smp_mb(); /* ensure update is seen before reading avail_idx */
-    return !vring_more_avail(vdev, vring);
 }
 
 /* This is stolen from linux/drivers/vhost/vhost.c:vhost_notify() */

diff --git a/include/hw/virtio/dataplane/vring.h b/include/hw/virtio/dataplane/vring.h
index e80985ee4c88013c190159d1f240cef9a8b63065..e1c2a65f5550b14e6c0ac7da57e2a6a1460766ba 100644 (file)
--- a/include/hw/virtio/dataplane/vring.h
+++ b/include/hw/virtio/dataplane/vring.h
@@ -42,7 +42,7 @@ static inline void vring_set_broken(Vring *vring)
 bool vring_setup(Vring *vring, VirtIODevice *vdev, int n);
 void vring_teardown(Vring *vring, VirtIODevice *vdev, int n);
 void vring_disable_notification(VirtIODevice *vdev, Vring *vring);
-bool vring_enable_notification(VirtIODevice *vdev, Vring *vring);
+void vring_enable_notification(VirtIODevice *vdev, Vring *vring);
 bool vring_should_notify(VirtIODevice *vdev, Vring *vring);
 void *vring_pop(VirtIODevice *vdev, Vring *vring, size_t sz);
 void vring_push(VirtIODevice *vdev, Vring *vring, VirtQueueElement *elem,