From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: why does skb->tstamp use getnstimeofday?
Date: Sun, 15 Jan 2012 19:56:53 +0100
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To: Anatoly Sivov <mm05@mail.ru>
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Le dimanche 15 janvier 2012 =C3=A0 21:55 +0400, Anatoly Sivov a =C3=A9c=
rit :

> I missed that field tstamp is used for things other than RTT and can =
be =20
> even user-spaced with SO_TIMESTAMP.
> However, timekeeper speed up/slow down (due to ntp) can seriously aff=
ect =20
> some congestion avoidance algorithm quality, I guess.
> Am I wrong?

=46or what kind of application or protocol do you feel there could be a
problem ?

TCP stack doesnt use skb->tstamp/jtime_t, for example, but jiffies.

ntp adjustements are normally very small and nobody notice.