cake_ewma
WRITE_ONCE(q->avg_netoff, cake_ewma(q->avg_netoff, off << 16, 8));
cake_ewma(q->avg_packet_interval,
cake_ewma(q->avg_peak_bandwidth, b,
WRITE_ONCE(b->avge_delay, cake_ewma(b->avge_delay, delay, 8));
cake_ewma(b->peak_delay, delay,
cake_ewma(b->base_delay, delay,