[Bugme-new] [Bug 33572] New: ath9k: numerous transmits of single packet when using block acks

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=33572

           Summary: ath9k: numerous transmits of single packet when using
                    block acks
           Product: Networking
           Version: 2.5
    Kernel Version: 2.6.32.27 (openwrt backfire svn 26713)
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Wireless
        AssignedTo: networking_wireless at kernel-bugs.osdl.org
        ReportedBy: jeroen at meshbone.com
        Regression: No


Hey,

I'm testing the following setup with the svn backfire (18/04/2011 rev 26713). 
I have an access point (192.168.1.253) configured with hostapd using the
following configuration:

interface=wlan0
bridge=br0
driver=nl80211
auth_algs=3
debug=0
logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2
dump_file=/tmp/hostapd.dump
beacon_int=100
max_num_sta=255
hw_mode=a
ieee80211n=1
wmm_enabled=1
ieee80211n=1
wmm_enabled=1
ht_capab=[TX-STBC][RX-STBC12][DELAYED-BA][MAX-AMSDU-7935]
channel=48
rts_threshold=2347
fragm_threshold=2346
ssid=ntest
ctrl_interface=/var/run/hostapd
ctrl_interface_group=0
ignore_broadcast_ssid=0

With another device (192.168.1.100) I connect to this access point.  Both
devices are ubiquitity routerstation pros with a R52n-M wireless card (AR9220).
 Once connected it will negotiate over the block acks which ends successfully. 
Yet when I preform a ping from the client to the access point, the request is
sent only once but the reply is sent multiple times.  All of the replies are
acked with normal acks yet the access point appears to ignore the normal acks
and sends out a block ack request.  The full trace can be found at
https://euterpe.cmi.ua.ac.be/~javonts/tmp/duplicateDump.pcap .  Note that a
bridge is used with the mac address 00:00:00:00:00:01, yet this doesn't
influence the results. 

Regards
Jeroen

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