tcp: provide earliest departure time in skb->tstamp
Switch internal TCP skb->skb_mstamp to skb->skb_mstamp_ns, from usec units to nsec units. Do not clear skb->tstamp before entering IP stacks in TX, so that qdisc or devices can implement pacing based on the earliest departure time instead of socket sk->sk_pacing_rate Packets are fed with tcp_wstamp_ns, and following patch will update tcp_wstamp_ns when both TCP and sch_fq switch to the earliest departure time mechanism. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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committed by
David S. Miller

parent
9799ccb0e9
commit
d3edd06ea8
@@ -1295,7 +1295,7 @@ new_segment:
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copy = size_goal;
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/* All packets are restored as if they have
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* already been sent. skb_mstamp isn't set to
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* already been sent. skb_mstamp_ns isn't set to
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* avoid wrong rtt estimation.
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*/
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if (tp->repair)
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