interval_start
interval_start, interval_end,
u64 cycles, now, interval_start;
interval_start = tk->tkr_mono.cycle_last;
if (!timestamp_in_interval(interval_start, now, cycles)) {
cycles = interval_start;
ktime_t *interval_start,
*interval_start = 0;
*interval_start = curr_intv_start;
*interval_start = ktime_add_ns(curr_intv_start, cycle);
*interval_start = ktime_add(curr_intv_start, n * cycle);
ktime_t interval_start, interval_end;
&interval_start, &interval_end, true);
ktime_t transmit_end_time, interval_end, interval_start, tcp_tstamp;
&interval_start, &interval_end,
txtime = max_t(ktime_t, txtime, interval_start);
entry->next_txtime = ktime_add(interval_start, sched->cycle_time);