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. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
