From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail2.candelatech.com ([208.74.158.173]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WwD3l-0003Rs-53 for ath10k@lists.infradead.org; Sun, 15 Jun 2014 16:13:33 +0000 Message-ID: <539DC612.1000902@candelatech.com> Date: Sun, 15 Jun 2014 09:13:06 -0700 From: Ben Greear MIME-Version: 1.0 Subject: Re: After shutdown/restart, ath10k sometimes stops receiving packets References: <878uoz4eza.fsf@kamboji.qca.qualcomm.com> <87vbs23ev5.fsf@kamboji.qca.qualcomm.com> In-Reply-To: <87vbs23ev5.fsf@kamboji.qca.qualcomm.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "ath10k" Errors-To: ath10k-bounces+kvalo=adurom.com@lists.infradead.org To: Kalle Valo , Avery Pennarun Cc: ath10k On 06/14/2014 10:45 PM, Kalle Valo wrote: > Avery Pennarun writes: > >> On Sat, Jun 14, 2014 at 12:45 PM, Kalle Valo wrote: >>> Avery Pennarun writes: >>>> We are experiencing a relatively-rare-but-not-rare-enough case which >>>> has approximately these steps: >>>> >>>> - run a wifi AP for a while with a station or two connected >>>> - shut down hostapd (stations all get disconnected of course) >>>> - restart hostapd (perhaps on another channel or with different settings) >>>> >>>> After that, an external wifi sniffer can see beacons being transmitted >>>> by the AP as expected, but all packets from stations trying to connect >>>> are ignored. >>> >>> Do you have any guesses how often this happens? Once a day, once a week? >> >> Someone in our QA group seems to be able to produce it after two or >> three test runs with Veriwave. Before each run, he stops and restarts >> hostapd. > > That's quite often. Was he testing DFS or something else? Maybe this is > related to radar detection or channel switching? For my firmware, I hacked a WMI message to return some register values. But, can they be read directly through the pci-e bus somehow (on stock firmware)? It would be great to get a register dump for debugging stuff like this. Could check the rx-filters and other such registers to see if there is some pattern involved. Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k