net: Add virtio queue interface to update used index from vring state
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>
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@ -2020,6 +2020,11 @@ void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, int n, uint16_t idx)
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vdev->vq[n].shadow_avail_idx = idx;
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}
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void virtio_queue_update_used_idx(VirtIODevice *vdev, int n)
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{
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vdev->vq[n].used_idx = vring_used_idx(&vdev->vq[n]);
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}
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void virtio_queue_invalidate_signalled_used(VirtIODevice *vdev, int n)
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{
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vdev->vq[n].signalled_used_valid = false;
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@ -269,6 +269,7 @@ hwaddr virtio_queue_get_used_size(VirtIODevice *vdev, int n);
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uint16_t virtio_queue_get_last_avail_idx(VirtIODevice *vdev, int n);
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void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, int n, uint16_t idx);
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void virtio_queue_invalidate_signalled_used(VirtIODevice *vdev, int n);
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void virtio_queue_update_used_idx(VirtIODevice *vdev, int n);
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VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n);
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uint16_t virtio_get_queue_index(VirtQueue *vq);
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EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq);
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