From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: getsockopt(TCP_DEFER_ACCEPT) value change
Date: Tue, 05 Jan 2010 17:14:23 +0100
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	Julian Anastasov <ja@ssi.bg>,
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To: Daniel Lezcano <daniel.lezcano@free.fr>
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Le 05/01/2010 16:45, Daniel Lezcano a =E9crit :
 =20
> It's not problem if the set / get values are not same, but I was aski=
ng
> because I am working with a test suite checking if a checkpoint /
> restart solution is correct.  One of these tests, sets the
> TCP_DEFER_ACCEPT value to 12, checkpoints / restarts, and reads the
> value in order to check if it was correctly restored. The value 12 wa=
s
> chosen because it is not rounded, so we were able to safely do the te=
st.
> But with the 2.6.32, the behaviour changed, so I preferred to report =
it
> in case that is something not expected.
>=20
>=20

12 happened to be rounded to 12 with previous kernels,
but with recent kernels we have another conversion table :

1 -> 3
2 -> 3
3 -> 3
4 -> 9
5 -> 9
6 -> 9
7 -> 9
8 -> 9
9 -> 9
10 -> 21
=2E..
21 -> 21
22 -> 45
=2E..
45 -> 45
46 -> 93
=2E..
93 -> 93
94 -> 189
=2E..
189 -> 189
190 -> 309
=2E..