On Tue, 2009-04-07 at 20:24 +0200, Michael Buesch wrote: > I'm wondering how to implement QoS capability runtime detection > in a mac80211 driver. > > In b43 we don't know at ieee80211_register time whether the firmware does > support QoS or not, because it's not loaded yet. (Reasons for not loading > it that early are issues with builtin-b43, etc...). > So we don't know whether we are going to load opensource fw (no QoS) or > proprietary fw (QoS capable). > But it seems that mac80211 requires to set hw->queues before ieee80211_register. > > So what I'd need is a way to change the number of possible queues from within > the ops->start handler. Well, I suppose you could register with the max and later reduce and stop the remaining queues you're not using... Or not stop them and drop packets on them. That's somewhat fragile, gives people who look at tc a wrong idea, and I can't imagine supporting it, but it should work. johannes
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