[LARTC] Patch to allow for the ATM "cell tax"

[Jason Boxman]

Stephen Hemminger said:
> On Fri, 03 Mar 2006 08:18:52 +1000
> Russell Stuart <russell-lartc at stuart.id.au> wrote:
>
>> On Thu, 2006-03-02 at 14:51 +0100, Markus Schulz wrote:
>> > > Why you don't use the existing overhead parameter? It's useless to
>> > > have two parameters which do the exact same thing (existing overhead
>> > > and your atm).
>> > > Only ATM Cell alignment must be added to rate table calculation.
>>
>> The overhead and atm options don't do the "exact same
>> thing".  If the atm option is present, tc includes the
>> atm cell alignment overheads in the rate table
>> calculation.  Otherwise it doesn't.
>>
>> As atm cell overheads aren't a fixed amount (they vary
>> in a non-linear fashion between 6 and 202 bytes), you
>> can't use the overhead option to calculate them.
>>
>> > But it would be nice if this would be patched into upstream iproute
>> > source. Then there is no need of patching for qos at adsl links.
>>
>>
>
> I will put it in iproute2 commands when a definitive set of patches
> is sent to me. So far, it still looks like it needs some fine tuning.

I'll test the patch from Russell Stuart in the next few days, I hope.  I'd
love to eventually see it in iproute2.

:)