On Fri, Jul 23, 2010 at 1:03 PM, Andrew Lutomirski <luto@xxxxxxx> wrote:
> On Fri, Jul 23, 2010 at 3:35 PM, Andrew Lutomirski <luto@xxxxxxx> wrote:
>> On Fri, Jul 23, 2010 at 3:30 PM, Andrew Lutomirski <luto@xxxxxxx> wrote:
>>>
>>> Then, after fiddling with an AP for a bit, I got:
>>>
>>> [11747.264221] cfg80211: Calling CRDA for country: US
>>> [11747.282664] cfg80211: Current regulatory domain updated by AP to: US
>>> [11747.282672] (start_freq - end_freq @ bandwidth),
>>> (max_antenna_gain, max_eirp)
>>> [11747.282680] (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1600 mBm)
>>> [11747.282688] (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 1600 mBm)
>>>
>>
>> It's worse than that. I reconnected to the AP (it appeared to work
>> for a few seconds) and I saw:
>>
>> Wiphy phy0
>> [...]
>> Band 2:
>> Capabilities: 0x872
>> HT20/HT40
>> Static SM Power Save
>> RX Greenfield
>> RX HT20 SGI
>> RX HT40 SGI
>> No RX STBC
>> Max AMSDU length: 3839 bytes
>> No DSSS/CCK HT40
>> Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
>> Minimum RX AMPDU time spacing: 4 usec (0x05)
>> HT TX/RX MCS rate indexes supported: 0-23, 32
>> Frequencies:
>> * 5180 MHz [36] (15.0 dBm) (passive scanning, no IBSS)
>> * 5200 MHz [40] (15.0 dBm) (passive scanning, no IBSS)
>> * 5220 MHz [44] (15.0 dBm) (passive scanning, no IBSS)
>> * 5240 MHz [48] (15.0 dBm) (passive scanning, no IBSS)
>> * 5260 MHz [52] (15.0 dBm) (passive scanning, no IBSS, radar detection)
>> * 5280 MHz [56] (15.0 dBm) (passive scanning, no IBSS, radar detection)
>> * 5300 MHz [60] (15.0 dBm) (passive scanning, no IBSS, radar detection)
>> * 5320 MHz [64] (15.0 dBm) (passive scanning, no IBSS, radar detection)
>> * 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)
>>
>> Which is absurd, because:
>>
>> Connected to 00:02:6f:6e:d7:6c (on wlan0)
>> SSID: FFTT5
>> freq: 5785 [!!!!!!!!!!!]
>> RX: 72058 bytes (310 packets)
>> TX: 2568 bytes (20 packets)
>> signal: -33 dBm
>> tx bitrate: 6.0 MBit/s
>>
>> The connection died after a little while, presumably because the AP
>> was outside of its own allowed band.
>>
>
> Here's the offending country IE:
>
> Country Information: Country Code: US, Indoor Environment
> Tag Number: 7 (Country Information)
> Tag length: 6
> Tag interpretation: Country Code: US, Indoor Environment
> Start Channel: 36, Channels: 13, Max TX Power: 16 dBm
>
> AFAICT net/wireless/reg.c ignores the last bit, and the other APs that
> work correctly here don't send country IEs.
Can you provide the output of iw dev wlan0 scan from a fresh git
version of iw? That will actually tell me more than your listing.
Luis
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