Date: Sun, 13 Feb 2005 23:05:27 +0000 (GMT) From: Robert Watson <rwatson@FreeBSD.org> To: David Gilbert <dgilbert@dclg.ca> Cc: freebsd-net@freebsd.org Subject: Re: altq for vlans? Message-ID: <Pine.NEB.3.96L.1050213230214.48471M-100000@fledge.watson.org> In-Reply-To: <16911.51264.86063.604597@canoe.dclg.ca>
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On Sun, 13 Feb 2005, David Gilbert wrote: > Has anyone considered patching the vlan driver to support altq? I > gather that since tun works, so should vlan. My understanding is that ALTQ processing occurs in the context of persisting outgoing packet queues -- the queueing going into the vlan driver is minimal, as the vlan driver immediately hands packets off to the underlying driver output queue. As such, my guess is that (a) there would be little or no effect to adding ALTQ processing the vlan interfaces since packets only ever live fleetingly in vlan queues, and (b) ALTQ processing already happens on the underlying interface, so you probably don't need it at the vlan layer, although you might look at vlan tags in deciding how to drop/etc the vlan-sourced messages in the underlying interface queue. Robert N M Watson
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