[PATCH 0/2] NET: Accurate packet scheduling for ATM/ADSL

[Jesper Dangaard Brouer <hawk@comx.dk>]

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The Linux traffic's control engine inaccurately calculates
transmission times for packets sent over ADSL links.  For
some packet sizes the error rises to over 50%.  This occurs
because ADSL uses ATM as its link layer transport, and ATM
transmits packets in fixed sized 53 byte cells.

The following patches to iproute2 and the kernel add an
option to calculate traffic transmission times over all
ATM links, including ADSL, with perfect accuracy.

A longer presentation of the patch, its rational, what it
does and how to use it can be found here:
   http://www.stuart.id.au/russell/files/tc/tc-atm/

A earlier version of the patch, and a _detailed_ empirical
investigation of its effects can be found here:
   http://www.adsl-optimizer.dk/

The patches are both backwards and forwards compatible.
This means unpatched kernels will work with a patched
version of iproute2, and an unpatched iproute2 will work
on patches kernels.


This is a combined effort of Jesper Brouer and Russell Stuart,
to get these patches into the upstream kernel.

Let the discussion start about what we need to change to get this
upstream?

We see this as a feature enhancement, as thus hope that it can be
queued in davem's net-2.6.18.git tree.

---
Regards,
 Jesper Brouer & Russell Stuart.


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