LINK_RETRAIN_TIMEOUT
end_jiffies = jiffies + LINK_RETRAIN_TIMEOUT;
deadline = ktime_add_us(ktime_get(), LINK_RETRAIN_TIMEOUT);
deadline = ktime_add_us(ktime_get(), LINK_RETRAIN_TIMEOUT);
if (time_after(jiffies, start_jiffies + LINK_RETRAIN_TIMEOUT)) {