Messages in this thread | | | Subject | Re: Bisected 3.9 regression for iwl4965 connection problem to 1672c0e3 | From | Johannes Berg <> | Date | Mon, 06 May 2013 17:44:06 +0200 |
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On Mon, 2013-05-06 at 17:31 +0200, Johannes Berg wrote:
> > But if so, I would also see > > the breakage on my setup, but I don't - it works quite well here. > > Are you testing on a passive channel? Try with a large beacon interval.
I think most likely what happens is that it's on a passive channel, and the firmware drops the TX packet with a bad status. Before the patch, we'd just wait sitting on the channel for HZ/5 (200ms) before trying again, with the patch we immediately retransmit the packet, which will fail again and again until the firmware received a beacon.
If you look at iwlwifi/dvm/, it has some passive_no_rx workaround for this, which I don't see in iwlegacy.
I think the best way to solve this would be to do such a thing in iwlegacy as well, but until then and for stable maybe we should introduce another HW flag to restore the previous mac80211 behaviour?
johannes
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