635 	((((_r)->sring->req_prod - loop) <		\
636 		(RING_SIZE(_r) - (loop - prod))) ?	\
637 	    ((_r)->sring->req_prod - loop) :		\
638 	    (RING_SIZE(_r) - (loop - prod)))
650 	RING_IDX loop, prod, end;  in xnb_to_peer()  local
682 	loop = xnbp->xnb_rx_ring.req_cons;  in xnb_to_peer()
704 		rxreq = RING_GET_REQUEST(&xnbp->xnb_rx_ring, loop);  in xnb_to_peer()
754 		loop++;  in xnb_to_peer()
764 	if (loop == xnbp->xnb_rx_ring.req_cons) {  in xnb_to_peer()
769 	end = loop;  in xnb_to_peer()
778 	    loop - xnbp->xnb_rx_ring.req_cons) != 0) {  in xnb_to_peer()
782 	loop = xnbp->xnb_rx_ring.req_cons;  in xnb_to_peer()
786 	while (loop < end) {  in xnb_to_peer()
826 		loop++;  in xnb_to_peer()
831 	xnbp->xnb_rx_ring.req_cons = loop;  in xnb_to_peer()
966 	RING_IDX	loop, prod;  in xnb_copy_to_peer()  local
1004 	loop = xnbp->xnb_rx_ring.req_cons;  in xnb_copy_to_peer()
1018 		rxreq = RING_GET_REQUEST(&xnbp->xnb_rx_ring, loop);  in xnb_copy_to_peer()
1173 		loop++;  in xnb_copy_to_peer()
1182 	if (loop == xnbp->xnb_rx_ring.req_cons) {  in xnb_copy_to_peer()
1193 	xnbp->xnb_rx_ring.req_cons = loop;  in xnb_copy_to_peer()
1338 	RING_IDX start, end, loop;  in xnb_from_peer()  local
1384 	loop = start;  in xnb_from_peer()
1389 	while (loop < end) {  in xnb_from_peer()
1396 		txreq = RING_GET_REQUEST(&xnbp->xnb_tx_ring, loop);  in xnb_from_peer()
1418 			loop++; /* Consume another slot in the ring. */  in xnb_from_peer()
1419 			ASSERT(loop <= end);  in xnb_from_peer()
1422 			    RING_GET_REQUEST(&xnbp->xnb_tx_ring, loop);  in xnb_from_peer()
1477 			txp->xt_idx = loop;  in xnb_from_peer()
1501 		loop++;  in xnb_from_peer()
1504 	xnbp->xnb_tx_ring.req_cons = loop;  in xnb_from_peer()