Subject: Re: multiple Tx queues
To: David Young <>
From: Nick Hudson <>
List: tech-net
Date: 01/08/2004 08:54:47
On Wednesday 07 January 2004 6:48 am, David Young wrote:
> I am writing a driver for a curious 802.11 chip which has high-, medium-,
> and low-priority transmit queues. I think that ath has additional Tx
> queues, also.

Sounds like assured forwarding (see rfc2597)

> Also, atw has a Tx queue for traffic that needs "contention-free"
> service. There are rare and expensive APs which provide this service.
> They reserve a period of time between each beacon where stations have to
> shut up until the AP polls them. Packets needing a time-bounded service,
> like VoIP, are usually sent in that period.

Sounds like expedited forwarding (see rfc3246)

> Any ideas how NetBSD can exploit these features?

I don't know about the code I use routers to exploit these protocol features.