On Fri, Feb 11, 2011 at 5:28 PM, Thomas Andrews <tandr...@grok.co.za> wrote:
> Hi,
>
> I have a couple of AR9220 cards running in 'N' mode, but I can't seem to get
> either Greenfield or two RX STBC streams going. These are the errors I get in
> each case:
>
>  Driver does not support configured HT capability [GF]

Yes Greenfield is not yet implemented.

>
> and
>
>  Driver does not support configured HT capability [RX-STBC*]
>
> Is this something that is controlled in the eeprom?
> You can see from the output of 'iw list' that only one RX spatial stream is 
> allowed:
>
>    RX STBC 1-stream

Please search for
[RFC] ath9k: Fix reporting of RX STBC streams to userspace

>
> As I understand it, the AR9220 (AR9280) supports two spatial straams for both
> TX and RX, and greenfield mode too. I am running the one card as an AP and the
> other as a STA. Is it possible that I have to do something on the STA to get
> greenfield operation to work?
>
> When the link comes up, it generally goes into MCS 15 mode with short GI, but
> throughput tests with iperf UDP never get above about 140 Mbit/s
>
> Here's some more info:
>
> This is a stock Ubuntu LTS installation with no custom compilations.
> # 
> -----------------------------------------------------------------------------
> Linux atom 2.6.35-22-generic-pae #33-Ubuntu SMP Sun Sep 19 22:14:14 UTC 2010 
> i686 GNU/Linux
> hostapd 1:0.6.10-2
> wpasupplicant 0.6.10-2
> iw 0.9.19-1
> # 
> -----------------------------------------------------------------------------
> # Output of dmesg:
>
> [   15.905053] ath9k 0000:03:07.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
> [   17.464303] ath: EEPROM regdomain: 0x0
> [   17.464312] ath: EEPROM indicates default country code should be used
> [   17.464319] ath: doing EEPROM country->regdmn map search
> [   17.464327] ath: country maps to regdmn code: 0x3a
> [   17.464334] ath: Country alpha2 being used: US
> [   17.464340] ath: Regpair used: 0x3a
> [   17.552718] phy0: Selected rate control algorithm 'ath9k_rate_control'
> [   17.554541] Registered led device: ath9k-phy0::radio
> [   17.554612] Registered led device: ath9k-phy0::assoc
> [   17.554685] Registered led device: ath9k-phy0::tx
> [   17.554765] Registered led device: ath9k-phy0::rx
> [   17.554778] phy0: Atheros AR9280 Rev:2 mem=0xf8660000, irq=19
> [   17.555130] cfg80211: Calling CRDA for country: US
> [   17.576278] cfg80211: Regulatory domain changed to country: US
> [   17.576290]     (start_freq - end_freq @ bandwidth), (max_antenna_gain, 
> max_eirp)
> [   17.576302]     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 
> mBm)
> [   17.576312]     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 
> mBm)
> [   17.576322]     (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 
> mBm)
> [   17.576332]     (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 
> mBm)
> [   17.576342]     (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 
> mBm)
> [   17.576352]     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 
> mBm)
> [   17.752556] ADDRCONF(NETDEV_UP): wlan0: link is not ready
> [   17.817705] cfg80211: Found new beacon on frequency: 5180 MHz (Ch 36) on 
> phy0
> [   20.272330] wlan0: authenticate with 00:19:70:3f:97:74 (try 1)
> [   20.275367] wlan0: authenticated
> [   20.275404] wlan0: associate with 00:19:70:3f:97:74 (try 1)
> [   20.315174] wlan0: RX AssocResp from 00:19:70:3f:97:74 (capab=0x11 
> status=0 aid=1)
> [   20.315189] wlan0: associated
> [   20.323407] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
>
> # 
> -----------------------------------------------------------------------------
> # Contents of /etc/hostapd.conf
>
> interface=wlan0
> driver=nl80211
> ssid=test_network
> channel=36
> hw_mode=a
> auth_algs=1
> wpa=3
> wpa_passphrase=foobar
> wpa_key_mgmt=WPA-PSK
> wpa_pairwise=TKIP CCMP
> rsn_pairwise=CCMP
> wme_enabled=1
> ieee80211n=1
> ht_capab=[HT40+][SHORT-GI-40][DSSS_CCK-40][TX-STBC]
> # doesn't work ---->  ht_capab=[HT40+][SHORT-GI-40][DSSS_CCK-40][TX-STBC][GF]
> # doesn't work ---->  
> ht_capab=[HT40+][SHORT-GI-40][DSSS_CCK-40][TX-STBC][RX-STBC12]
> country_code=US
> wmm_enabled=1
> wmm_ac_bk_cwmin=4
> wmm_ac_bk_cwmax=10
> wmm_ac_bk_aifs=7
> wmm_ac_bk_txop_limit=0
> wmm_ac_bk_acm=0
> wmm_ac_be_aifs=3
> wmm_ac_be_cwmin=4
> wmm_ac_be_cwmax=10
> wmm_ac_be_txop_limit=0
> wmm_ac_be_acm=0
> wmm_ac_vi_aifs=2
> wmm_ac_vi_cwmin=3
> wmm_ac_vi_cwmax=4
> wmm_ac_vi_txop_limit=94
> wmm_ac_vi_acm=0
> wmm_ac_vo_aifs=2
> wmm_ac_vo_cwmin=2
> wmm_ac_vo_cwmax=3
> wmm_ac_vo_txop_limit=47
> wmm_ac_vo_acm=0
> # 
> -----------------------------------------------------------------------------
> # iw reg get
> country 00:
>        (2402 - 2472 @ 40), (3, 20)
>        (2457 - 2482 @ 20), (3, 20), PASSIVE-SCAN, NO-IBSS
>        (2474 - 2494 @ 20), (3, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS
>        (5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
>        (5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
> # 
> -----------------------------------------------------------------------------
> # iw list
> Wiphy phy0
>        Band 1:
>                Capabilities: 0x11ce
>                        HT20/HT40
>                        SM Power Save disabled
>                        RX HT40 SGI
>                        TX STBC
>                        RX STBC 1-stream
>                        Max AMSDU length: 7935 bytes
>                        DSSS/CCK HT40
>                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
>                Minimum RX AMPDU time spacing: 8 usec (0x06)
>                HT TX/RX MCS rate indexes supported: 0-15
>                Frequencies:
>                        * 5180 MHz [36] (17.0 dBm)
>                        * 5200 MHz [40] (17.0 dBm)
>                        * 5220 MHz [44] (17.0 dBm)
>                        * 5240 MHz [48] (17.0 dBm)
>                        * 5260 MHz [52] (20.0 dBm) (passive scanning, no IBSS, 
> radar detection)
>                        * 5280 MHz [56] (20.0 dBm) (passive scanning, no IBSS, 
> radar detection)
>                        * 5300 MHz [60] (20.0 dBm) (passive scanning, no IBSS, 
> radar detection)
>                        * 5320 MHz [64] (20.0 dBm) (passive scanning, no IBSS, 
> radar detection)
>                        * 5500 MHz [100] (20.0 dBm) (passive scanning, no 
> IBSS, radar detection)
>                        * 5520 MHz [104] (20.0 dBm) (passive scanning, no 
> IBSS, radar detection)
>                        * 5540 MHz [108] (20.0 dBm) (passive scanning, no 
> IBSS, radar detection)
>                        * 5560 MHz [112] (20.0 dBm) (passive scanning, no 
> IBSS, radar detection)
>                        * 5580 MHz [116] (20.0 dBm) (passive scanning, no 
> IBSS, radar detection)
>                        * 5600 MHz [120] (disabled)
>                        * 5620 MHz [124] (disabled)
>                        * 5640 MHz [128] (disabled)
>                        * 5660 MHz [132] (20.0 dBm) (passive scanning, no 
> IBSS, radar detection)
>                        * 5680 MHz [136] (20.0 dBm) (passive scanning, no 
> IBSS, radar detection)
>                        * 5700 MHz [140] (20.0 dBm) (passive scanning, no 
> IBSS, radar detection)
>                        * 5745 MHz [149] (30.0 dBm)
>                        * 5765 MHz [153] (30.0 dBm)
>                        * 5785 MHz [157] (30.0 dBm)
>                        * 5805 MHz [161] (30.0 dBm)
>                        * 5825 MHz [165] (30.0 dBm)
>                Bitrates (non-HT):
>                        * 6.0 Mbps
>                        * 9.0 Mbps
>                        * 12.0 Mbps
>                        * 18.0 Mbps
>                        * 24.0 Mbps
>                        * 36.0 Mbps
>                        * 48.0 Mbps
>                        * 54.0 Mbps
>        max # scan SSIDs: 4
>        Supported interface modes:
>                 * IBSS
>                 * managed
>                 * AP
>                 * AP/VLAN
>                 * monitor
>                 * mesh point
>        Supported commands:
>                 * new_interface
>                 * set_interface
>                 * new_key
>                 * new_beacon
>                 * new_station
>                 * new_mpath
>                 * set_mesh_params
>                 * set_bss
>                 * authenticate
>                 * associate
>                 * deauthenticate
>                 * disassociate
>                 * join_ibss
>                 * Unknown command (55)
>                 * Unknown command (57)
>                 * Unknown command (59)
>                 * set_wiphy_netns
>                 * Unknown command (65)
>                 * connect
>                 * disconnect
> # 
> -----------------------------------------------------------------------------
> # On the STA, I just have a very basic setup in /etc/network/interfaces:
>
> iface wlan0 inet static
>    address 10.3.3.6
>    netmask 255.255.255.0
>    wireless-essid test_network
>    wireless-mode managed
>    wpa-ssid test_network
>    wpa-psk foobar
> # 
> -----------------------------------------------------------------------------
>
>
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