IRB_MAX_DELAY
if (time <= IRB_MAX_DELAY) {
} else if (time <= 10 * IRB_MAX_DELAY) {
} else if (time <= 100 * IRB_MAX_DELAY) {
if (buf[i] >= max_tb_us * IRB_MAX_DELAY)
#define IRB_DELAY_MASK (IRB_MAX_DELAY - 1)