SKB_CLOCK_MONOTONIC
tstamp_type = SKB_CLOCK_MONOTONIC;
if (skb->tstamp_type != SKB_CLOCK_MONOTONIC && skb->tstamp)
skb->tstamp_type = SKB_CLOCK_MONOTONIC;
BUILD_BUG_ON(SKB_CLOCK_MONOTONIC != (int)BPF_SKB_CLOCK_MONOTONIC);
skb_set_delivery_time(skb, cork->transmit_time, SKB_CLOCK_MONOTONIC);
nskb->tstamp_type = SKB_CLOCK_MONOTONIC;
skb_set_delivery_time(skb, tp->tcp_wstamp_ns, SKB_CLOCK_MONOTONIC);
skb_set_delivery_time(buff, skb->tstamp, SKB_CLOCK_MONOTONIC);
skb_set_delivery_time(skb, tp->tcp_wstamp_ns, SKB_CLOCK_MONOTONIC);
SKB_CLOCK_MONOTONIC);
skb_set_delivery_time(skb, now, SKB_CLOCK_MONOTONIC);
skb_set_delivery_time(skb, now, SKB_CLOCK_MONOTONIC);
skb_set_delivery_time(syn, syn_data->skb_mstamp_ns, SKB_CLOCK_MONOTONIC);
skb_set_delivery_time(skb, cork->base.transmit_time, SKB_CLOCK_MONOTONIC);
skb_set_delivery_time(buff, tcp_transmit_time(sk), SKB_CLOCK_MONOTONIC);