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 1Wjgca-0004HQ-S5 for ath10k@lists.infradead.org; Mon, 12 May 2014 03:09:45 +0000 Message-ID: <53703B61.3050305@candelatech.com> Date: Sun, 11 May 2014 20:09:21 -0700 From: Ben Greear MIME-Version: 1.0 Subject: Re: Unicast packets stop being transmitted to a particular station, under load, when WPA2 is enabled References: In-Reply-To: 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: Avery Pennarun , ath10k On 05/11/2014 06:57 PM, Avery Pennarun wrote: > Version: 3.15-rc1 and ath10k-stable-3.11-8 (both via backports to kernel 3.2.26) > Firmware: 10.1.467.2-1 > > Steps: > - Configure ath10k as AP on channel 149, width 80 MHz, WPA2 encryption > - Connect my 2009 macbook > - Start a ping of 8.8.8.8 in the background from my macbook > - Generate some traffic. The trigger varies, but running uTorrent or > quickly opening a lot of background tabs in Chrome usually seems to > set it off within a couple of minutes. iperf and isoping don't seem > to cause any trouble. > > Expected: > - ping keeps pinging > > Actual: > - tcpdump on the ath10k host shows ICMP requests coming in, and > responses going out. > - tcpdump on the macbook shows ICMP requests going out, but no > responses coming back. > - tcpdump -I (radiotap mode) on the macbook is a little hard to > understand since it's encrypted, but it shows some packets coming out > of the ath10k (broadcasts, I think) but no unicast packets to the > macbook. > - tcpdump on the macbook *does* show broadcast packets arriving. For > example, ARP requests and "ping -b 192.168.1.255" (my local subnet IP > address) get through. > - Disconnecting and then reconnecting the wifi on my macbook fixes the > problem until it next triggers. > - Other STAs connected to the AP are not affected when the one STA > isn't able to communicate (although each one has the potential to > trigger the problem) Can you reproduce with any other type of station device? Also, have you tried sniffing with a third device to see if the AP actually puts the ICMP responses on the air? 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