[Madwifi-devel] iwpriv

[Mohammad A. <mo....@gm...>]

Dear All,

I want to change the minimum contention window (cwmin) to complete a part
from my research, I prepared 4 stations and one access point (using Madwifi
driver) and I set the (cwmin) on one of  the stations to 31 and i left the
default values for the other stations (cwmin default = 15) by using (iwpriv
tool) and i let them  to start transmission  to the access point at the same
time, then i monitored the throughput by (iperf) but the results were
strange! all had nearly the same throughput which is completely wrong, the
station with higher (cwmin) must have longer backoff when a collision
occurs, therefore it must have the lower throughput, and what i concluded is
the iwpriv tool doesn't work correctly after i tested it many times with
different values, so my question is:

whether this tool  is really activated in madwifi or not ? and if not, is
there any way to set the value of (cwmin) from the driver's code directly?

Thank you in advance for your support...


-- 
Mohammad Jaser Abdelhadi
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Communications Engineering-Senior Student
Princess Sumaya University for Technology
Mobile: +962777030924
Email: moh...@ie... \ mo....@gm...