416 zc_switch(queue_t *qp)  in zc_switch()  argument
418 	zc_state_t *zcs = qp->q_ptr;  in zc_switch()
421 	if (qp == zcs->zc_master_rdq)  in zc_switch()
423 	else if (OTHERQ(qp) == zcs->zc_master_rdq && zcs->zc_slave_rdq != NULL)  in zc_switch()
425 	else if (qp == zcs->zc_slave_rdq)  in zc_switch()
427 	else if (OTHERQ(qp) == zcs->zc_slave_rdq && zcs->zc_master_rdq != NULL)  in zc_switch()
438 zc_side(queue_t *qp)  in zc_side()  argument
440 	zc_state_t *zcs = qp->q_ptr;  in zc_side()
443 	if (qp == zcs->zc_master_rdq ||  in zc_side()
444 	    OTHERQ(qp) == zcs->zc_master_rdq) {  in zc_side()
447 	ASSERT(qp == zcs->zc_slave_rdq || OTHERQ(qp) == zcs->zc_slave_rdq);  in zc_side()
693 handle_mflush(queue_t *qp, mblk_t *mp)  in handle_mflush()  argument
696 	DBG1("M_FLUSH on %s side", zc_side(qp));  in handle_mflush()
699 		DBG1("M_FLUSH, FLUSHW, %s side", zc_side(qp));  in handle_mflush()
700 		flushq(qp, FLUSHDATA);  in handle_mflush()
708 			if (zc_switch(RD(qp)) != NULL) {  in handle_mflush()
709 				putnext(zc_switch(RD(qp)), mp);  in handle_mflush()
712 		} else if ((zc_switch(RD(qp)) != NULL) &&  in handle_mflush()
719 			putnext(zc_switch(RD(qp)), nmp);  in handle_mflush()
725 		qreply(qp, mp);  in handle_mflush()
744 zc_wput(queue_t *qp, mblk_t *mp)  in zc_wput()  argument
753 	ASSERT(qp->q_ptr);  in zc_wput()
755 	DBG1("entering zc_wput, %s side", zc_side(qp));  in zc_wput()
761 	zcs = (zc_state_t *)qp->q_ptr;  in zc_wput()
762 	if (zcs->zc_master_rdq != NULL && qp == WR(zcs->zc_master_rdq) &&  in zc_wput()
773 				miocack(qp, mp, 0, EINVAL);  in zc_wput()
777 				miocack(qp, mp, 0, 0);  in zc_wput()
786 				miocack(qp, mp, 0, EINVAL);  in zc_wput()
799 				miocack(qp, mp, 0, EINVAL);  in zc_wput()
805 				miocack(qp, mp, 0, EINVAL);  in zc_wput()
822 			miocack(qp, mp, 0, 0);  in zc_wput()
831 				miocack(qp, mp, 0, EINVAL);  in zc_wput()
835 				miocack(qp, mp, 0, 0);  in zc_wput()
844 				miocack(qp, mp, 0, EINVAL);  in zc_wput()
858 				miocack(qp, mp, 0, EINVAL);  in zc_wput()
864 				miocack(qp, mp, 0, EINVAL);  in zc_wput()
881 			miocack(qp, mp, 0, 0);  in zc_wput()
888 	if (zc_switch(RD(qp)) == NULL) {  in zc_wput()
889 		DBG1("wput to %s side (no one listening)", zc_side(qp));  in zc_wput()
892 			handle_mflush(qp, mp);  in zc_wput()
895 			miocnak(qp, mp, 0, 0);  in zc_wput()
905 		DBG1("(hipri) wput, %s side", zc_side(qp));  in zc_wput()
912 			handle_mflush(qp, mp);  in zc_wput()
918 			ASSERT(zc_switch(RD(qp)) != NULL);  in zc_wput()
919 			putnext(zc_switch(RD(qp)), mp);  in zc_wput()
922 		DBG1("done (hipri) wput, %s side", zc_side(qp));  in zc_wput()
930 	if (qp->q_first == NULL && bcanputnext(RD(zc_switch(qp)), mp->b_band)) {  in zc_wput()
932 		putnext(RD(zc_switch(qp)), mp);  in zc_wput()
935 		(void) putq(qp, mp);  in zc_wput()
937 	DBG1("done wput, %s side", zc_side(qp));  in zc_wput()
948 zc_rsrv(queue_t *qp)  in zc_rsrv()  argument
951 	zcs = (zc_state_t *)qp->q_ptr;  in zc_rsrv()
957 	ASSERT(qp == zcs->zc_master_rdq || qp == zcs->zc_slave_rdq);  in zc_rsrv()
958 	if (zc_switch(qp) == NULL) {  in zc_rsrv()
962 	qenable(WR(zc_switch(qp)));  in zc_rsrv()
974 zc_wsrv(queue_t *qp)  in zc_wsrv()  argument
978 	DBG1("zc_wsrv master (%s) side", zc_side(qp));  in zc_wsrv()
983 	if (zc_switch(RD(qp)) == NULL) {  in zc_wsrv()
985 		while ((mp = getq(qp)) != NULL) {  in zc_wsrv()
987 				miocnak(qp, mp, 0, 0);  in zc_wsrv()
991 		flushq(qp, FLUSHALL);  in zc_wsrv()
998 	while ((mp = getq(qp)) != NULL) {  in zc_wsrv()
1005 		if (bcanputnext(RD(zc_switch(qp)), mp->b_band)) {  in zc_wsrv()
1007 			putnext(RD(zc_switch(qp)), mp);  in zc_wsrv()
1010 			(void) putbq(qp, mp);  in zc_wsrv()