Re: CCID 3: Strategy for removing division bugs and division errors

[Arnaldo Carvalho de Melo]

On 11/29/06, Gerrit Renker <[EMAIL PROTECTED]> wrote:

As promised, I sat down and wrote up conditions and current problems with
some of the calculations in the CCID 3 module. Changes are required only for 
the sender.

In a nutshell, the strategy solves
 * the problem that dividing-by-seconds is not handled correctly
 * defines a sufficient resolution for tracking sending rates
 * gets rid of the overflow problem

The cost is that
 * at least 1 and ideally 3 structure elements of tfrc_tx_info make it to __u64
 ===> Arnaldo are you OK with this?

first_read() = 0; /* No problems */
rereading() ....
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