Quiet-IE implementation

[Himali]

Hi,

      We have implemented Quiet IE logic as per the 802.11h standard. 
Please find the attached 3 patches related to Quiet-IE implementation.

      Quiet IE :-
      As per 802.11h standard, Quiet IE is used to quiet other stations 
to reduce the interference for radar detection. We have implemented this 
for BSS only. In that AP will Send Quiet IE in its     beacon and probe 
response packets. All the stations connected to this AP will quiet (i.e. 
stop transmission) for quiet duration when quiet count reaches zero.

      Configuration Parameters for Quiet-IE:-
       a) quiet               -  To enable/disable the Quiet Logic.
       b) quiet_period    -  To set quiet period parameter of Quiet-IE.
       c) quiet_count     -  To set quiet count parameter of Quiet-IE.
       d) quiet_offset     -  To set quiet offset parameter of Quiet-IE.
       e) quiet_duration -   To set quiet duration parameter of Quiet-IE.

     Test Procedure:-
      a) On AP, configure the quiet parameters as -
          ifconfig wlan0 quiet
          ifconfig wlan0 quiet_period 1
          ifconfig wlan0 quiet_count 100
          ifconfig wlan0 quiet_offset 0
          ifconfig wlan0 quiet_duration 50 (this should be less then 
configured beacon interval)

       b) Start ping utility on AP with ip-address of associated station 
and waiting time of 1ms ( -W 1), and check the results, Lots of packets 
will be received out of time (i.e. >1ms)
       c) we can verified this with other combinations also.

Let us know in case of any queries regarding this.

Regards,
Himali

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