ktime_to_timespec64_cond
ktime_to_timespec64_cond(shhwtstamps->hwtstamp, ts))
ktime_to_timespec64_cond(skb_tstamp(skb), ts))
ktime_to_timespec64_cond(skb->tstamp, ts))
if (!ktime_to_timespec64_cond(hwtstamp, ts))
ktime_to_timespec64_cond(skb->tstamp, tss.ts + 0))
if (ktime_to_timespec64_cond(hwtstamp, tss.ts + 2)) {