hostapd + 100 devices on Cubieboard

[Marek Floriańczyk]

Dnia czwartek, 4 maja 2017 17:05:59 CEST Bruno Antunes pisze:
> On 4 May 2017 at 16:54, Marek Floriańczyk <marek.florianczyk at gmail.com> 
>
> >> If we are going rinkydink USB devices I would have gone with an
> >> atheros/qualcomm chip.
> >> https://wikidevi.com/wiki/TP-LINK_TL-WN722N
> > 

Hi all,

This device:
https://wikidevi.com/wiki/TP-LINK_TL-WN722N
looks like the better option, it has for example Antenna connector: RP-SMA

However, when I try to use it (with many devices at the same time), 
I have in logs:
hostapd: wlan0: STA 2c:3a:e8:00:33:d6 IEEE 802.11: Could not set STA to kernel 
driver

This usb dongle is visible under lsusb as:
Bus 001 Device 002: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass       255 Vendor Specific Subclass
  bDeviceProtocol       255 Vendor Specific Protocol
  bMaxPacketSize0        64
  idVendor           0x0cf3 Atheros Communications, Inc.
  idProduct          0x9271 AR9271 802.11n
  bcdDevice            1.08
  iManufacturer          16 ATHEROS
  iProduct               32 USB2.0 WLAN
  iSerial                48 12345

There are kernel modules loaded:

root at cubieboard2:~# lsmod |grep -i ath
ath9k_htc              42086  0 
ath9k_common           17725  1 ath9k_htc
ath9k_hw              363616  2 ath9k_htc,ath9k_common
ath                    14356  3 ath9k_htc,ath9k_hw,ath9k_common
mac80211              423599  1 ath9k_htc
cfg80211              337391  4 ath9k_htc,mac80211,ath,ath9k_common
root at cubieboard2:~#

root at cubieboard2:~# uname -a
Linux cubieboard2 4.9.12-sunxi #4 SMP Thu Feb 23 19:46:51 CET 2017 armv7l GNU/
Linux
root at cubieboard2:~#

I have found this info on the web:
http://geekofpassage.blogspot.com/2014/07/openwrt-ath9khtc-could-not-add-sta-to.html

Best Regards
Marek