Fwd: reduce hci connect time

Hi to all

I'm trying to reduce the time of HCI connect using the clock offset in the
hcitool create connection command.
So I modified hcitool.c (present in attach) adding the clkoffset parameter
on hci_create_connection:

 if (hci_create_connection(dd, &bdaddr, htobs(ptype), clkoffset , role,
&handle, 25000) < 0)
                perror("Can't create connection");

and change the code for insert that in the command with this syntax:

hcitool cc --clkos <clkoffset-in-decimal> <BDADDR>;

then I add a printf into hcitool inq for print the clkoffset in decimal
and try to insert this in the connection command, b
ut the time of connect do not change!

Later, during other test I take a mistake using a wrong clockoffset in the
connect command and the time of the connection w
as redused under 100 ms (with the slave in continuos page scan mode).

So I write a little bash script for test and I find a stange class of value
to reduce this time of connection, but I can't
understanding the logic.

Where I mistake?
Why if I insert the same value returned from hci inqiry the connection do
not reduce its time?
There is a bug in the code or I wrong using some function?

In attach you can find:
the hcitool.c code (modified)
a dump with a hci inquiry, and an hci connect with the same value of
 clokoffset bash script for trying a lot value of clkoffset

Can you help me

Thanks
 Ilario

conn.tgz
Description: GNU Zip compressed data