Can not get 802.11ac with ath10k QCA6147 chip (802.11abgn works)

[Bartlomiej Grzeskowiak]

Hi Michal,

Thank you for the hint.

>From the iw app I see
channel 112 (5560 MHz), width: 80 MHz, center1: 5530 MHz

If I understand it correctly it proves that 802.11ac mode is used.
I would be thankful if you could confirm.

# iw wlan0 info
Interface wlan0
ifindex 4
wdev 0x1
addr d4:7b:b0:03:a1:d8
type managed
wiphy 0
channel 112 (5560 MHz), width: 80 MHz, center1: 5530 MHz


# iw wlan0 link
Connected to e4:f4:c6:12:91:08 (on wlan0)
SSID: NETGEARac5G.lab
freq: 5560
RX: 8261235 bytes (47064 packets)
TX: 990 bytes (9 packets)
signal: -18 dBm
tx bitrate: 6.0 MBit/s

bss flags: short-slot-time
dtim period: 2
beacon int: 100

# iw wlan0 station dump
Station e4:f4:c6:12:91:08 (on wlan0)
inactive time: 4875990 ms
rx bytes: 8291134
rx packets: 47235
tx bytes: 990
tx packets: 9
tx retries: 0
tx failed: 0
signal:   -18 dBm
signal avg: -17 dBm
tx bitrate: 6.0 MBit/s
rx bitrate: 6.0 MBit/s
authorized: yes
authenticated: yes
preamble: long
WMM/WME: yes
MFP: no
TDLS peer: no


2016-01-28 9:52 GMT+01:00 Michal Kazior <michal.kazior at tieto.com>:
> On 28 January 2016 at 09:38, Bartlomiej Grzeskowiak
> <bartlomiej.grzeskowiak at gmail.com> wrote:
>> I use ath10k driver for our QCA6147 chip for a while now. However I
>> have realized that 802.11 mode reported in my system is abgn. iwconfig
>> and linkspeed in wpa_cli reports 6 Mbs speed.
>> # iwconfig wlan0
>> wlan0 IEEE 802.11abgn ESSID:"NETGEARac5G.lab"
>> Mode:Managed Frequency:5.18 GHz Access Point: E4:F4:C6:12:91:08
>> Bit Rate=6 Mb/s Tx-Power=30 dBm
>> Retry short limit:7 RTS thr:off Fragment thr:off
>
> iwconfig is an ancient tool for driver using wext. All upstream
> drivers use nl80211. Use `iw` tool instead, please. You can get
> relevant information with:
>   iw wlan0 info
>   iw wlan0 link
>   iw wlan0 station dump
>
> The info/link (if you don't use an ancient `iw` that is) will tell you
> the channel and channel width that the device is tuned to so you can
> guess if you run 11ac if you see channel width at 80MHz.
>
> The reported tx bitrate is buggy because FW doesn't report it so it
> stays at "zero" which is interpreted by the system as 6mbps. This is
> mentioned on the wiki:
>
>   https://wireless.wiki.kernel.org/en/users/drivers/ath10k#known_bugslimitations
>
>
> Michał