[Madwifi-devel] Madwifi and ETSI EN 300 328 V1.8.1

[Pommnitz Jörg]

Hello all,
do you know whether it is possible to make Madwifi supported hardware ETSI EN 300 328 V1.8.1 compliant? If so, what would be required?

I found the following ath9k patches
http://www.spinics.net/lists/linux-wireless/msg115798.html
http://www.spinics.net/lists/linux-wireless/msg118665.html

These changes supposedly update ath9k to comply with the new ETSI norm. Can these patches be adapted to Madwifi?

Regards
Jörg


________________________________
IABG mbH
Sitz der Gesellschaft: Ottobrunn, Registergericht: Amtsgericht München, HRB 5499
Geschäftsführung: Prof. Dr.-Ing. Rudolf F. Schwarz
Vorsitzender des Aufsichtsrats: RA Engelbert Kupka MdL a.D.

[Pavel Roskin]

Hello Jörg​,

Yes, there is similar code in MadWifi. Just look
for AR5212_CCA_MAX_GOOD_VALUE and AR5416_CCA_MAX_GOOD_VALUE. There is a
little problem with the code - MadWifi uses the same value for 2GHz and
5GHz, whereas the changes in ath9k use separate limits for different bands.

I don't want to change any MadWifi logic that cannot be trivially tested.
We don't have any active userbase. If we do it wrong, nobody would tell us.
I would rather verify that the change applies to all chipsets supported by
ath5k and ath9k. If you want changes in MadWifi, please make sure they are
in ath5k and ath9k for the corresponding chipsets.

ath5k uses the same value for both bands, AR5K_TUNE_CCA_MAX_GOOD_VALUE
equal to -95. It would need to be changed to support per-band limits.

ath9k always uses per-band limits. But the limits are wildly different
across chipsets, ranging from -116 to -60.

Pavel

[Pommnitz Jörg]

Pavel,
thanks fort he heads up!
I’m not sure I will do anything before the holidays about this, but your input is greatly appreciated.

Kind regards
Joerg

Von: Pavel Roskin [mailto:***@gnu.org]
Gesendet: Freitag, 12. Dezember 2014 22:55
An: Pommnitz Jörg
Cc: madwifi-***@lists.sourceforge.net
Betreff: Re: [Madwifi-devel] Madwifi and ETSI EN 300 328 V1.8.1

Hello Jörg​,

Yes, there is similar code in MadWifi. Just look for AR5212_CCA_MAX_GOOD_VALUE and AR5416_CCA_MAX_GOOD_VALUE. There is a little problem with the code - MadWifi uses the same value for 2GHz and 5GHz, whereas the changes in ath9k use separate limits for different bands.

I don't want to change any MadWifi logic that cannot be trivially tested. We don't have any active userbase. If we do it wrong, nobody would tell us. I would rather verify that the change applies to all chipsets supported by ath5k and ath9k. If you want changes in MadWifi, please make sure they are in ath5k and ath9k for the corresponding chipsets.

ath5k uses the same value for both bands, AR5K_TUNE_CCA_MAX_GOOD_VALUE equal to -95. It would need to be changed to support per-band limits.

ath9k always uses per-band limits. But the limits are wildly different across chipsets, ranging from -116 to -60.

Pavel


________________________________
IABG mbH
Sitz der Gesellschaft: Ottobrunn, Registergericht: Amtsgericht MÃŒnchen, HRB 5499
GeschÀftsfÌhrung: Prof. Dr.-Ing. Rudolf F. Schwarz
Vorsitzender des Aufsichtsrats: RA Engelbert Kupka MdL a.D.