virtio: add a queue_index to VirtQueue
Add a queue_index to VirtQueue and a helper to fetch it, this could be used by multiqueue supported device. Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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@ -73,6 +73,8 @@ struct VirtQueue
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/* Notification enabled? */
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bool notification;
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uint16_t queue_index;
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int inuse;
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uint16_t vector;
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@ -931,6 +933,7 @@ void virtio_init(VirtIODevice *vdev, const char *name,
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for (i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
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vdev->vq[i].vector = VIRTIO_NO_VECTOR;
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vdev->vq[i].vdev = vdev;
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vdev->vq[i].queue_index = i;
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}
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vdev->name = name;
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@ -1018,6 +1021,11 @@ VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n)
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return vdev->vq + n;
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}
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uint16_t virtio_get_queue_index(VirtQueue *vq)
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{
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return vq->queue_index;
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}
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static void virtio_queue_guest_notifier_read(EventNotifier *n)
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{
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VirtQueue *vq = container_of(n, VirtQueue, guest_notifier);
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@ -280,6 +280,7 @@ hwaddr virtio_queue_get_ring_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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VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n);
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uint16_t virtio_get_queue_index(VirtQueue *vq);
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int virtio_queue_get_id(VirtQueue *vq);
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EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq);
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void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign,
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