#2130: Wrongly limited frequency usage in new HAL
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Reporter: [EMAIL PROTECTED] | Owner: nbd
Type: defect | Status: new
Priority: major | Component: madwifi-hal-testing
Version: trunk | Keywords: HAL indoor outdoor frequency
restriction
Patch_attached: 0 | Pending: 0
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since the HAL 2008-08-15, the frequency usage is strictly limited in an
uncomfortable way that prevents using new HAL in scenarios when one card
is configured to receive at outdoor 5GHz frequencies and the second card
is transmitting at indoor 5GHz frequencies (e.g. Local indoor 5GHz AP
receiving connectivity from outdoor 5GHz long-distance link). With the HAL
2008-05-28 everything works as expected. Managed mode card receives at
outdoor frequencies 5.5-5.7 GHz and master mode indoor AP transmits at
indoor frequency 5.26 GHz. This is for countrycode=276. With the new HAL
When you modprobe ath_pci with countrycode=276 without outdoor parameter,
only indoor frequencies are available and therefore Managed mode card is
not able to connect to the outdoor AP. With outdoor=1, we must use outdoor
frequency for indoor local AP thus wasting frequency spectrum by not using
frequencies available for indoor
5GHz. Nevertheless there is a risk of overlaping two outdoor frequencies
since the outdoor incoming link can switch frequency randomly.
The solution would be to preserve-restore the behavior of the old HAL to
allow automatic indoor/outdoor frequencies available simultaneously and
remove outdoor module parameter or introduce a sysctl parameter which is
able to change the frequency range (indoor/outdoor usage) of a card on-
the-fly.
The cards used in this scenario are Wistron CM9 cards (AR5213).
The other cards (Mikrotik R52 - AR5414) have also been tested.
--
Ticket URL: <http://madwifi.org/ticket/2130>
madwifi.org <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity
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