Function virtqueue_kick_prepare_packed

dpdk/drivers/net/virtio/virtqueue.h:504–516

}

static inline int
virtqueue_kick_prepare_packed(struct virtqueue *vq)
{
	uint16_t flags;

	/*
	 * Ensure updated data is visible to vhost before reading the flags.
	 */
	virtio_mb(vq->hw->weak_barriers);
	flags = vq->vq_packed.ring.device->desc_event_flags;

	return flags != RING_EVENT_FLAGS_DISABLE;
}

/*
 * virtqueue_kick_prepare*() or the virtio_wmb() should be called