636 	((((_r)->sring->req_prod - loop) <		\
637 		(RING_SIZE(_r) - (loop - prod))) ?	\
638 	    ((_r)->sring->req_prod - loop) :		\
639 	    (RING_SIZE(_r) - (loop - prod)))
651 	RING_IDX loop, prod, end;  in xnb_to_peer()  local
684 	loop = xnbp->xnb_rx_ring.req_cons;  in xnb_to_peer()
706 		rxreq = RING_GET_REQUEST(&xnbp->xnb_rx_ring, loop);  in xnb_to_peer()
756 		loop++;  in xnb_to_peer()
766 	if (loop == xnbp->xnb_rx_ring.req_cons) {  in xnb_to_peer()
771 	end = loop;  in xnb_to_peer()
780 	    loop - xnbp->xnb_rx_ring.req_cons) != 0) {  in xnb_to_peer()
784 	loop = xnbp->xnb_rx_ring.req_cons;  in xnb_to_peer()
788 	while (loop < end) {  in xnb_to_peer()
828 		loop++;  in xnb_to_peer()
833 	xnbp->xnb_rx_ring.req_cons = loop;  in xnb_to_peer()
968 	RING_IDX	loop, prod;  in xnb_copy_to_peer()  local
1006 	loop = xnbp->xnb_rx_ring.req_cons;  in xnb_copy_to_peer()
1020 		rxreq = RING_GET_REQUEST(&xnbp->xnb_rx_ring, loop);  in xnb_copy_to_peer()
1175 		loop++;  in xnb_copy_to_peer()
1184 	if (loop == xnbp->xnb_rx_ring.req_cons) {  in xnb_copy_to_peer()
1195 	xnbp->xnb_rx_ring.req_cons = loop;  in xnb_copy_to_peer()
1340 	RING_IDX start, end, loop;  in xnb_from_peer()  local
1386 	loop = start;  in xnb_from_peer()
1391 	while (loop < end) {  in xnb_from_peer()
1398 		txreq = RING_GET_REQUEST(&xnbp->xnb_tx_ring, loop);  in xnb_from_peer()
1420 			loop++; /* Consume another slot in the ring. */  in xnb_from_peer()
1421 			ASSERT(loop <= end);  in xnb_from_peer()
1424 			    RING_GET_REQUEST(&xnbp->xnb_tx_ring, loop);  in xnb_from_peer()
1479 			txp->xt_idx = loop;  in xnb_from_peer()
1503 		loop++;  in xnb_from_peer()
1506 	xnbp->xnb_tx_ring.req_cons = loop;  in xnb_from_peer()