Simultaneous hostapd and wpa_supplicant on QCA9880

[Janusz Dziedzic]

On 5 August 2015 at 19:08, Ann Lo <annlo at ieee.org> wrote:
> Hello,
>
> Has anyone succeeded in running hostapd and wpa_supplicant at the same
> time on a single QCA9880? I have not been able to. Does anyone have any
> luck with this?
>
> The software/firmware I use:
>
> - Linux kernel 3.16.0-34-generic
I think you should update your kernel - best compile code from gitub
https://github.com/kvalo/ath
Next you will get fresh cfg80211/mac80211/ath10k.

> - firmware-2 version 10.1.467.2-1
Single Channel Concurrency works correctly with 636 firmware - QCA9880
- 10x fail in your case because of different iface combination.
So, before kernel upgrade try 636 firmware.

BTW:
QCA6174 support also MCC.

> - wpa_supplicant version 2.1
> - hostapd version 2.4
>
> Configuration:
>
> - iw dev wlan4 interface add clientwlan type managed
> - iw dev wlan4 interface add apwlan type __ap
> - ip link set clientwlan address 04:f0:21:16:04:b0
> - ip link set apwlan address 04:f0:21:16:04:b1
> - ifconfig clientwlan up
> - ifconfig apwlan up 10.0.0.1 netmask 255.255.255.0
> - wpa_supplicant -iclientwlan -Dnl80211 -c wpa.test.conf
> - hostapd -d hostapd-test.conf
> - Both wpa_supplicant and hostapd use the same channel.
>
> Problems:
>
> (1) If wpa_supplicant is executed before hostapd, wpa_supplicant comes
>      up OK but hostapd fails with the following errors:
>      - nl80211: Beacon set failed: -16 (Device or resource busy)
>      - Failed to set beacon parameters
>
> (2) If hostapd is executed before wpa_supplicant, hostapd comes up OK
>      but wpa_supplicant fails with the following errors:
>      - nl80211: send_and_recv->nl_recvmsgs failed: -33
>      - clientwlan: SME: Trying to authenticate with 00:03:07:12:34:56
> (SSID='dd-wrt-ath1' freq=5220 MHz)
>      - clientwlan: SME: Authentication request to the driver failed
>
> Using the same configuration files, wpa_supplicant is able to connect
> to the remote AP if hostapd is not executed. Similarly, hostapd is able
> to provide service to the remote client if wpa_supplicant is not executed.
> I have also tried configurations without any security. Same errors as
> above when running hostapd and wpa_supplicant at the same time.
>
> I have exhausted all information I could find from the web. According
> to this link (http://www.candelatech.com/vsta.php), there is the
> suggestion that HW encryption cannot work with multiple virtual
> interfaces. In one of my tests, I have disabled security altogether by
> using "key_mgmt=NONE" in the configuration file for wpa_supplicant.
> It is not clear why there continues to be an error "Authentication
> request to the driver failed".
>
> Would you provide your expert opinions on this matter if you have the
> experience?
>
> Thanks,
> Ann
>

BR
Janusz