RINGMASK
((ap)->async_ring[(ap)->async_rput++ & RINGMASK] = (uchar_t)(c))
#define RING_GET(ap) ((ap)->async_ring[(ap)->async_rget++ & RINGMASK])
((ap)->async_ring[(ap)->async_rput++ & RINGMASK] = ((uchar_t)(c)|(s)))
((ap)->async_ring[((ap)->async_rget) & RINGMASK] &= ~S_ERRORS)
((ap)->async_ring[((ap)->async_rget) & RINGMASK] & (c))
((zap)->za_ring[(zap)->za_rput++ & RINGMASK] = ((uchar_t)(c)|(s)))
((zap)->za_ring[((zap)->za_rget) & RINGMASK] &= S_UNMARK)
((zap)->za_ring[((zap)->za_rget) & RINGMASK] & (c))
#define RING_CNT(zap) (((zap)->za_rput - (zap)->za_rget) & RINGMASK)
((zap)->za_ring[(zap)->za_rput++ & RINGMASK] = (uchar_t)(c))
#define RING_GET(zap) ((zap)->za_ring[(zap)->za_rget++ & RINGMASK])
#define RING_CNT(ap) (((ap)->async_rput - (ap)->async_rget) & RINGMASK)
((ap)->async_ring[(ap)->async_rput++ & RINGMASK] = (uchar_t)(c))
#define RING_GET(ap) ((ap)->async_ring[(ap)->async_rget++ & RINGMASK])
((ap)->async_ring[(ap)->async_rput++ & RINGMASK] = ((uchar_t)(c)|(s)))
((ap)->async_ring[((ap)->async_rget) & RINGMASK] &= ~S_ERRORS)
((ap)->async_ring[((ap)->async_rget) & RINGMASK] & (c))
#define RING_CNT(qsp) (((qsp)->qcn_rput - (qsp)->qcn_rget) & RINGMASK)
((qsp)->qcn_ring[(qsp)->qcn_rput++ & RINGMASK] = (uchar_t)(c))
#define RING_GET(qsp) ((qsp)->qcn_ring[(qsp)->qcn_rget++ & RINGMASK])
#define RING_ADDR(qsp) (&((qsp)->qcn_ring[(qsp)->qcn_rget & RINGMASK]))
#define RING_POFF(qsp) ((qsp)->qcn_rput & RINGMASK)
#define RING_GOFF(qsp) ((qsp)->qcn_rget & RINGMASK)