519 	int needed;  in virtqueue_enqueue()  local
522 	needed = readable + writable;  in virtqueue_enqueue()
525 	VQASSERT(vq, needed == sg->sg_nseg,  in virtqueue_enqueue()
526 	    "segment count mismatch, %d, %d", needed, sg->sg_nseg);  in virtqueue_enqueue()
528 	    needed <= vq->vq_nentries || needed <= vq->vq_max_indirect_size,  in virtqueue_enqueue()
529 	    "too many segments to enqueue: %d, %d/%d", needed,  in virtqueue_enqueue()
532 	if (needed < 1)  in virtqueue_enqueue()
537 	if (vq_ring_use_indirect(vq, needed)) {  in virtqueue_enqueue()
540 	} else if (vq->vq_free_cnt < needed)  in virtqueue_enqueue()
550 	dxp->ndescs = needed;  in virtqueue_enqueue()
556 	vq->vq_free_cnt -= needed;  in virtqueue_enqueue()
696 	int i, needed;  in vq_ring_enqueue_segments()  local
699 	needed = readable + writable;  in vq_ring_enqueue_segments()
702 	     i < needed;  in vq_ring_enqueue_segments()
712 		if (i < needed - 1)  in vq_ring_enqueue_segments()
722 vq_ring_use_indirect(struct virtqueue *vq, int needed)  in vq_ring_use_indirect()  argument
728 	if (vq->vq_max_indirect_size < needed)  in vq_ring_use_indirect()
731 	if (needed < 2)  in vq_ring_use_indirect()
743 	int needed;  in vq_ring_enqueue_indirect()  local
746 	needed = readable + writable;  in vq_ring_enqueue_indirect()
747 	VQASSERT(vq, needed <= vq->vq_max_indirect_size,  in vq_ring_enqueue_indirect()
761 	dp->len = needed * sizeof(struct vring_desc);  in vq_ring_enqueue_indirect()