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Date: Fri, 04 Sep 2009 03:36:59 +0200 From: Patrick McHardy <kaber@...sh.net> To: David Miller <davem@...emloft.net> CC: hawk@...u.dk, cl@...ux-foundation.org, eric.dumazet@...il.com, jarkao2@...il.com, netdev@...r.kernel.org Subject: Re: [NET] Add proc file to display the state of all qdiscs. David Miller wrote: > From: Patrick McHardy <kaber@...sh.net> > Date: Thu, 03 Sep 2009 19:56:33 +0200 > > >> It would probably also be possible to use TC classifiers for queue >> selection. >> > > You mean just like Intel's multiqueue scheduler and multiqueue > classifiers which we already have in the tree :- No, actually integrated in the current infrastructure :) The patches add a virtual root qdisc, so we still have a single root from userspace's POV. This qdisc is only used for sch_api purposes and doesn't necessarily match the real root qdiscs. When a "mq" qdisc is attached (done by default for multiqueue devices), the queues are exposed as child classes of this qdisc and can be individually grafted with different qdiscs. Since the virtual root is global per device, what we could do is allow to attach classifiers and execute them in dev_pick_tx() to select the queue. But currently this would require global locking, so this would have to be fixed previously. Probably not an easy thing to do. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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