Linux-driver for wireless cards based on Atheros chipsets: for driver developers ()

ubantu 10.04 with madwifi ath_pci driver hang with iperf client

Hello friends, i am dealing with very strange problem from couple of weeks
i am doing performance measurement for wireless network , i am using
ubantu 10.04 with madwifi ath_pci driver , i have connected to machine
using RF cables to form network , when i run iperf clinet for UDP and
Iperf Server on other ,my machine UDP iperf client hang with black
screen, only hard reboot is option. i am not able to progress , please
help if somebody know solution

thanks in advance

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rezbin@yahoo.com | 3 Apr 22:37

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John | 29 Jan 02:25

Half/quarter channel

Hi Chris,

As far as I known, madwifi does not support half/quarter channel bandwidth, you can see some source codes for this function, but you still need to do some work to complete it. I have added this function for my devices, if you still have any other questions, we can discuss them together.

Best & Regards

John

2012-01-29

John

Message: 5

Date: Thu, 17 Nov 2011 08:41:25 -0600

From: Chris <bitcpf <at> gmail.com>

Subject: [Madwifi-devel] Half/quarter channel

To: madwifi-devel <at> lists.sourceforge.net

Message-ID:

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Hi Everyone,

Has madwifi supported half/quarter channel now?

If yes, how can I set the radio work in half/quarter channel?

Thanks,

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Fabian Lanze | 25 Jan 11:22

TSF Timer Reset Interval

Hi!

When operating a device with madwifi in AP mode I observe, that beacons 
sent out by this device reset the TSF timestamp once each minute. 
According to what I can see in the source this is not done by the driver 
itself but by the hardware/hal. (I used the 0.9.4 snapshot, I don't know 
whether this is also the case in ath5k/ath9k)

My questions are:
- Where exactly is the TSF timer resetted?
- What is the reason for these frequently resets? Is this in some way 
specific to the Atheros hardware? Or is there a certain reason to force 
this reset? "Real" hardware access points seem to reset their TSF timer 
much less frequent.

Thanks in advance,
Fabian

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Chris | 17 Nov 15:41

Half/quarter channel

Hi Everyone,

Has madwifi supported half/quarter channel now?

If yes, how can I set the radio work in half/quarter channel?

Thanks,

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Michal Debski | 27 Oct 17:14

AR9220/Pci Partially Working

Hello,

I am trying to integrate a WLM200N5 minipci 11n/a card (which is, I believe, AR9220-based, pciid 0x168c0029) into an PPC-based box running 2.4.24.

I have patched my copy of the madwifi-devel stream with Mr. Roskin's AR9220 patch

(found at http://madwifi-users.20070.n2.nabble.com/MadWifi-driver-fails-to-recognize-Ubiquity-card-td5294763.html).

The card appears to be working from the software side of things - I can bring up the interface, setup ssid and a channel, and retrieve stats.

The radio, however, does not seem to be producing any RF output - confirmed by an 802.11 power analyzer connected to either of the antennas.

I have tried setting the RFKILL parameter both in software and hardware (blocking the appropriate PCI pin), to no avail.

I would welcome any ideas regarding using similar (pciid 0x168c0029) cards with Madwifi. Perhaps someone would have an updated patch (which would be very appreciated)?

(I have also posted this on madwifi-users, but perhaps this list is more appropriate)

Michal

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fayaz rehman | 19 Oct 22:35

(no subject)

thanx

Computer Software Engineering
N.W.F.P University of Engineering
and Technology Peshawar (Mardan campus)
Pakistan
mobile: +92 300 5898781

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Pommnitz Jörg | 19 Oct 16:13

Madwifi and net80211 "aggressive mode"

Hello all,
I'm investigating a performance regression between Madifi and ath5k
(see https://lists.ath5k.org/pipermail/ath5k-devel/2011-October/004967.html).

Adrian Chadd suggested that the differences might be because of the net80211
"aggressive mode". From looking at the Madwifi-0.9.4 sources, I guessed that
changing the iwpriv wmm settings might affect the "aggressive mode", but I 
could not see any difference in the performance. Is this the right knob to 
change the "aggressive mode"? If not, what is the right knob?

Thanks in advance
  Joerg

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Claudio Rossi | 13 Oct 17:01

Where stats are populated?

Dear all,
  I am new to madwifi, and I have to implement some modifications on
the drivers for my research.
The first step is to estimate the MAC layer goodput for each station,
both at each station and at the AP for each associated station.
I have seen the data structure in ieee802.11_ioctl.h named
ieee80211_nodestats, that contains several stats but I cannot find the
code where these stats are populated.
Where is the logic? I tried to references to  the variable names
without success.
Anyone can give me an hint?
Every form of help is highly appreciated
Thanks

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RaviKiran Paladugu | 8 Oct 06:48

Changing Contention Window

Dear All,

I am a beginner for using MadWifi, can you please help me how to change the contention window. I am using Ubiquiti SR71-C wireless card which is based on Atheros AR9160 with DFS SUPPORT chipset.

I really appreciate very one for taking time to read my email and your time.

Thanks in advance.

Regards.

Ravi

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