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Refactoring spectral scan code and adding spectral scan support for ath9k_htc

Oleksij Rempel ath9k-devel 1 version New

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Cover letter [ath9k-devel] [PATCH 0/3] Refactoring spectral scan code and adding spectral scan support for ath9k_htc

Am 29.04.2014 15:16, schrieb Ashish Patro:

Quoted 35 lines

Hi Oleksij,

For the AR9721 chipset, the spectral count should be set to 0. Also, for the AR 9271 chipset, I get more stable results in monitor mode.

I've tested it in the following mode:-

1. Create the monitor interface.

WLAN_INTF=wlan3 # Change accordingly to client interface. PHY_INTF=phy0 # For the ath9k_htc phy interface. MON_INTF=moni0

iw dev $WLAN_INTF del
iw phy $PHY_INTF interface add $MON_INTF type monitor ifconfig moni0 up
iwconfig

2. Initiate the spectral scan.

echo background > /sys/kernel/debug/ieee80211/phy0/ath9k_htc/spectral_scan_ctl; echo trigger > /sys/kernel/debug/ieee80211/phy0/ath9k_htc/spectral_scan_ctl;

3. Write output to file (Get endless samples).

while [ 1 ];
do
echo "Writing";
sudo cat /sys/kernel/debug/ieee80211/phy0/ath9k_htc/spectral_scan0 >>
/tmp/tmp_fft;
wc -l /tmp/tmp_fft;
sleep 1;
done

Quoted 2 lines

4. Check the FFT output
./fft_eval /tmp/fft_results

Thank you, it works. Now you can send your patches to linux-wireless at vger.kernel.org
and
linville at tuxdriver.com

if you have some time and can separate spectral scan to different debugfs directory to make it universal for both drivers, you'll be my hero :)
instead of phy0/ath9k/spectral... and phy0/ath9k_htc/spectral... make phy0/spectral_scan/scan_*

it will make live for user space programs easier and will make possible to move debufs part of spectral code to common-sepctral.c

Quoted 84 lines

Thanks
Ashish

On Tue, Apr 29, 2014 at 1:52 AM, Oleksij Rempel <[email protected] <mailto:[email protected]>> wrote:

Hm... it compiles but i didn't go any results with my script:

sudo bash -c "echo chanscan > /sys/kernel/debug/ieee80211/phy1/ath9k_htc/spectral_scan_ctl" sudo bash -c "echo 8 > /sys/kernel/debug/ieee80211/phy1/ath9k_htc/spectral_count"

for i in $(seq 1 44); do
sudo iw dev wlan-test scan
sleep 1
done

sudo bash -c "cat /sys/kernel/debug/ieee80211/phy1/ath9k_htc/spectral_scan0 > /tmp/fft_results"
sudo bash -c "echo 8 > /sys/kernel/debug/ieee80211/phy1/ath9k_htc/spectral_count"

sudo bash -c "echo disable > /sys/kernel/debug/ieee80211/phy1/ath9k_htc/spectral_scan_ctl"

./fft_eval /tmp/fft_results

Am 25.04.2014 10:12, schrieb Ashish Patro:
>
> The patches move the common components of spectral scan funcationality to common-spectral.c.
>
> Also added spectral scan support to ath9k_htc using the same mechanism to collect spectral scan data as used by ath9k driver. >
> This work was done at the Wisconsin Wireless and NetworkinG Systems (WiNGS) Lab at the University of Wisconsin Madison. >
> Ashish Patro (3):
> Moving the ath9k specific spectral functions to ath9k.h from
> spectral.h. Renamed spectral.h to common-spectral.h
> Refactoring the ath9k driver to move common spectral functions to
> common-spectral.c
> Update spectral scan calls to support both ath9k and ath9k_htc.
> Adding spectral scan functionality to ath9k_htc driver. Tested
> using a AR9271 WiFi card.
>
> drivers/net/wireless/ath/ath9k/Makefile | 3 +-
> drivers/net/wireless/ath/ath9k/ar9002_phy.c | 11 +-
> drivers/net/wireless/ath/ath9k/ath9k.h | 9 +-
> drivers/net/wireless/ath/ath9k/common-spectral.c | 213
+++++++++++++
> drivers/net/wireless/ath/ath9k/common-spectral.h | 199 ++++++++++++
> drivers/net/wireless/ath/ath9k/htc.h | 13 +
> drivers/net/wireless/ath/ath9k/htc_drv_debug.c | 3 +
> drivers/net/wireless/ath/ath9k/htc_drv_init.c | 8 +
> drivers/net/wireless/ath/ath9k/htc_drv_main.c | 75 +++++
> drivers/net/wireless/ath/ath9k/htc_drv_spectral.c | 353
+++++++++++++++++++++
> drivers/net/wireless/ath/ath9k/htc_drv_txrx.c | 17 +
> drivers/net/wireless/ath/ath9k/recv.c | 7 +-
> drivers/net/wireless/ath/ath9k/spectral.c | 187 -----------
> drivers/net/wireless/ath/ath9k/spectral.h | 212 ------------
> 14 files changed, 905 insertions(+), 405 deletions(-)
> create mode 100644 drivers/net/wireless/ath/ath9k/common-spectral.c > create mode 100644 drivers/net/wireless/ath/ath9k/common-spectral.h > create mode 100644 drivers/net/wireless/ath/ath9k/htc_drv_spectral.c > delete mode 100644 drivers/net/wireless/ath/ath9k/spectral.h >

--
Regards,
Oleksij

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Signature · 10 lines
Regards,
Oleksij

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