On Tue, 2009-04-07 at 21:40 +0200, Michael Buesch wrote: > Ok I see. So you say it's OK to lower hw->queues after ieee80211_register. Let's say it's acceptable ;) > Should I reset hw->queues back to the value ieee80211_register was called with, before > I call unregister/free? Are there resources allocated by the number of queues? There are resources allocated, notably the qdiscs etc. in alloc_ether_mq() or whatever it's called in register_hw(). But the networking core should keep track of those so it shouldn't matter what the value is. OTOH if it can switch back and forth the pending packets are done per queue... for example ieee80211_clear_tx_pending will be called at unregister times, so if it's possible to be up with 4 queues, and later be up with 1, you will want to unregister with 4. johannes
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