However, if network media become a bottleneck, if have to implement traffic shaping
(mostly QoS) in the driver. Synchronizing these two can become an issue.
Question - suppose one has DiffServ enabled and also has a number of queues in the driver
to implement QoS on the media (I'm actually talking about real life example from 802.11).
If one of the queues inside a driver becomes full, the driver has to call netif_queue_stop,
effectively stopping all the queues, which is terribly inefficient. It would be much better
if there was a way to stop just one queue in DiffServ, which corresponds to that particular
queue in a driver. But then again, the driver would have to know about DiffServ, which
it should not.
Is there any good solution for that problem ? I can't seem to find any, except for dropping
packets in the driver...
-- Alexander Sirotkin SW Engineer
Texas Instruments
Broadband Communications Israel (BCIL)
Tel: +972-9-9706587
________________________________________________________________________
"Those who do not understand Unix are condemned to reinvent it, poorly."
-- Henry Spencer
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