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Message-ID: <1367855046.8434.16.camel@jlt4.sipsolutions.net> Date: Mon, 06 May 2013 17:44:06 +0200 From: Johannes Berg <johannes@...solutions.net> To: Stanislaw Gruszka <sgruszka@...hat.com> Cc: Jake Edge <jake@....net>, linux-wireless@...r.kernel.org, lkml <linux-kernel@...r.kernel.org> Subject: Re: Bisected 3.9 regression for iwl4965 connection problem to 1672c0e3 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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