slp_dequeue_timed
rmsg = slp_dequeue_timed(reg_q, &timeout, &etimed);
extern void *slp_dequeue_timed(slp_queue_t *, timestruc_t *, SLPBoolean *);
if (!(rqst = slp_dequeue_timed(tcp_q, to, &etimed))) {
return (slp_dequeue_timed(qa, NULL, NULL));