#4805 BLOC Update.: OLPC laptops interfering with other 802.11b/g traffic

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#4805: OLPC laptops interfering with other 802.11b/g traffic
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  Reporter:  kimquirk  |       Owner:  mbletsas
      Type:  defect    |      Status:  new     
  Priority:  blocker   |   Milestone:  Update.1
 Component:  wireless  |     Version:          
Resolution:            |    Keywords:          
  Verified:  0         |  
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Comment(by jcardona):

 Replying to [comment:14 jg]:
 > Also, do we have a good description of the problem as observed written
 up, describing exactly what happens when we send a frame?

 We don't have any other description of 4805 other than what's on this
 ticket.
 [http://wiki.laptop.org/go/Wireless#Capturing_wireless_traffic_on_the_xo
 Monitor mode] was implemented exactly for the purpose of analyzing
 remotely these sort of scenarios.  We now have to advertise it and make it
 easy for early users to capture traffic and attach it to tickets when they
 experience any problem with the network.  One way to do that would be to
 map the script below to an easy to remember key combination (Magnifying
 Lense + Mesh View?).

 {{{
 SECS=30
 CAPTURE_FILE=`date +%y%m%d%H%M`.cap
 TRAFFIC_MASK=0x7

 echo Capturing traffic for $SECS seconds...

 echo $TRAFFIC_MASK > /sys/class/net/msh0/device/libertas_rtap
 ifconfig rtap0 up
 SLEEP_PID=$!
 tcpdump -s 128 -i rtap0 -w $CAPTURE_FILE &> /dev/null &
 PID=$!
 sleep $SECS
 kill $TPID
 echo Done.  Capture file is $CAPTURE_FILE
 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/4805#comment:21>
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