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net: Add virtio queue interface to update used index from vring state

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Bring virtio queue to correct internal  state for host-to-guest
operations when vhost is temporary stopped.

Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Yuri Benditovich 2016-12-13 10:12:05 +02:00 • committed by Michael S. Tsirkin
parent f2fd57db36
commit 312d3b3534
2 changed files with 6 additions and 0 deletions
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include/hw/virtio/virtio.h
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@ -269,6 +269,7 @@ hwaddr virtio_queue_get_used_size(VirtIODevice *vdev, int n);
uint16_t virtio_queue_get_last_avail_idx(VirtIODevice *vdev, int n);
void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, int n, uint16_t idx);
void virtio_queue_invalidate_signalled_used(VirtIODevice *vdev, int n);
void virtio_queue_update_used_idx(VirtIODevice *vdev, int n);
VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n);
uint16_t virtio_get_queue_index(VirtQueue *vq);
EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq);