On Mon, Feb 9, 2009 at 10:20 AM, Luis R. Rodriguez
<lrodriguez@xxxxxxxxxxx> wrote:
> On Mon, Feb 9, 2009 at 10:09 AM, Tony Vroon <tony@xxxxxxxx> wrote:
>> I'm using:
>> [ebuild R ] net-wireless/wireless-regdb-20090130 0 kB
>> [ebuild R ] net-wireless/crda-1.0.1-r1 0 kB
>> [ebuild R ] net-wireless/iwl5000-ucode-5.4.0.11 0 kB
>>
>> The regulatory information for Great Britain looks as follows:
>> country GB:
>> (2402.000 - 2482.000 @ 40.000), (N/A, 20.00)
>> (5170.000 - 5250.000 @ 40.000), (N/A, 20.00)
>> (5250.000 - 5330.000 @ 40.000), (N/A, 20.00), DFS
>> (5490.000 - 5710.000 @ 40.000), (N/A, 27.00), DFS
>>
>> iw reports the card configuration like such:
>> Wiphy phy0
>> Band 1:
>> HT capabilities: 0x087e
>> * 20/40 MHz operation
>> * SM PS disabled
>> * HT-greenfield
>> * 20 MHz short GI
>> * 40 MHz short GI
>> * max A-MSDU len 7935
>> HT A-MPDU factor: 0x0003 (65535 bytes)
>> HT A-MPDU density: 0x0005 (4 usec)
>> HT MCS set: ff ff ff 00 01 00 00 00 00 00 c2 01 01 00 00 00
>> Frequencies:
>> * 2412 MHz [1] (15.0 dBm)
>> * 2417 MHz [2] (15.0 dBm)
>> * 2422 MHz [3] (15.0 dBm)
>> * 2427 MHz [4] (15.0 dBm)
>> * 2432 MHz [5] (15.0 dBm)
>> * 2437 MHz [6] (15.0 dBm)
>> * 2442 MHz [7] (15.0 dBm)
>> * 2447 MHz [8] (15.0 dBm)
>> * 2452 MHz [9] (15.0 dBm)
>> * 2457 MHz [10] (15.0 dBm)
>> * 2462 MHz [11] (15.0 dBm)
>> * 2467 MHz [12] (15.0 dBm) (passive scanning, no IBSS)
>> * 2472 MHz [13] (15.0 dBm) (passive scanning, no IBSS)
>> Bitrates:
>> * 1.0 Mbps
>> * 2.0 Mbps (short preamble supported)
>> * 5.5 Mbps (short preamble supported)
>> * 11.0 Mbps (short preamble supported)
>> * 6.0 Mbps
>> * 9.0 Mbps
>> * 12.0 Mbps
>> * 18.0 Mbps
>> * 24.0 Mbps
>> * 36.0 Mbps
>> * 48.0 Mbps
>> * 54.0 Mbps
>> * 60.0 Mbps
>> Band 2:
>> HT capabilities: 0x087e
>> * 20/40 MHz operation
>> * SM PS disabled
>> * HT-greenfield
>> * 20 MHz short GI
>> * 40 MHz short GI
>> * max A-MSDU len 7935
>> HT A-MPDU factor: 0x0003 (65535 bytes)
>> HT A-MPDU density: 0x0005 (4 usec)
>> HT MCS set: ff ff ff 00 01 00 00 00 00 00 c2 01 01 00 00 00
>> Frequencies:
>> * 5180 MHz [36] (disabled)
>> * 5200 MHz [40] (disabled)
>> * 5220 MHz [44] (disabled)
>> * 5240 MHz [48] (disabled)
>> * 5260 MHz [52] (disabled)
>> * 5280 MHz [56] (disabled)
>> * 5300 MHz [60] (disabled)
>> * 5320 MHz [64] (disabled)
>> * 5500 MHz [100] (disabled)
>> * 5520 MHz [104] (disabled)
>> * 5540 MHz [108] (disabled)
>> * 5560 MHz [112] (disabled)
>> * 5580 MHz [116] (disabled)
>> * 5600 MHz [120] (disabled)
>> * 5620 MHz [124] (disabled)
>> * 5640 MHz [128] (disabled)
>> * 5660 MHz [132] (disabled)
>> * 5680 MHz [136] (disabled)
>> * 5700 MHz [140] (disabled)
>> * 5745 MHz [149] (disabled)
>> * 5765 MHz [153] (disabled)
>> * 5785 MHz [157] (disabled)
>> * 5805 MHz [161] (disabled)
>> * 5825 MHz [165] (disabled)
>> Bitrates:
>> * 6.0 Mbps
>> * 9.0 Mbps
>> * 12.0 Mbps
>> * 18.0 Mbps
>> * 24.0 Mbps
>> * 36.0 Mbps
>> * 48.0 Mbps
>> * 54.0 Mbps
>> * 60.0 Mbps
>> Supported interface modes:
>> * IBSS
>> * Station
>> * Monitor
>>
>> My Cisco AIR-AP1131AG-E-K9_v04 access point with C1130 Software
>> (C1130-K9W7-M), Version 12.4(10b)JA, RELEASE has Dot11Radio0 &
>> Dot11Radio1 configured like so:
>> world-mode dot11d country GB indoor
>>
>> The kernel seems to do something else:
>> cfg80211: Calling CRDA for country: GB
>> cfg80211: Current regulatory domain updated by AP to: GB
>> (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
>> (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm)
>>
>> Any idea how that could happen please?
>
> Your AP did not provide 5 GHz frequencies in its country information
> element. Because of this the intersection between what CRDA has for GB
> and what your AP provides does not include any channels in 5 GHz. This
> has been fixed in wireless-testing though, if your AP country IE does
> not have information for a separate band we lave that band to trust
> CRDA information instead.
>
> This should have been propagated down to 29 already, maybe it'll be in rc5?
BTW this is the patch commit info:
commit 0c7dc45d21de6ae212b5ccb7cdff5beff795ccf0
Author: Luis R. Rodriguez <lrodriguez@xxxxxxxxxxx>
Date: Wed Jan 7 17:43:36 2009 -0800
cfg80211: Fix regression with 11d on bands
This fixes a regression on disallowing bands introduced with the new
802.11d support. The issue is that IEEE-802.11 allows APs to send
a subset of what a country regulatory domain defines. This was clarified
in this document:
http://tinyurl.com/11d-clarification
As such it is possible, and this is what is done in practice, that a
single band 2.4 GHz AP will only send 2.4 GHz band regulatory information
through the 802.11 country information element and then the current
intersection with what CRDA provided yields a regulatory domain with
no 5 GHz information -- even though that country may actually allow
5 GHz operation. We correct this by only applying the intersection rules
on a channel if the the intersection yields a regulatory rule on the
same band the channel is on.
Signed-off-by: Luis R. Rodriguez <lrodriguez@xxxxxxxxxxx>
Acked-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
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