Anyone tried ath10k AP with 40Mhz operation?

Michal Kazior michal.kazior at
Wed Jun 10 23:54:25 PDT 2015

On 10 June 2015 at 22:31, Ben Greear <greearb at> wrote:
> I'm trying this hostapd config file.  Beacons seem OK, and station
> associates.  Station puts DHCP Discover on the air (using 20Mhz according
> to wireshark).  AP reads this, and thinks it is sending a DHCP response back,
> but sniffer never shows DHCP response on the air.

Is the MSDU carrying DHCP resp completed with "ok" status? Or is it
maybe no-ack or discarded?

> Kernel is 4.0.4+, ath10k firmware is CT firmware, 10.1.467 based.
> I am curious if anyone else has tried to do this?
> Thanks,
> Ben
> interface=vap50
> driver=nl80211
> logger_syslog=-1
> logger_syslog_level=2
> logger_stdout=-1
> logger_stdout_level=2
> ctrl_interface=/var/run/hostapd
> ctrl_interface_group=0
> ssid=ben-ota-2a

Works for me on c7b39fdeb479a7956a3c41638d527196ce295fdd
( with
 AP: qca988x hw2.0, 10.1.467.2-1
 STA: qca6174 hw2.2 (its a 2x2),

I test by using ip6 ping on each possible endpoint pair (ap->sta,
sta->ap). I flush arp/neigh tables on all endpoints before each ping
so both multicast and unicast is tested.

Within the same quick-n-dirty OTA env I get the following UDP (iperf -P5):

 HT40 (ieee80211ac=0):
  qca6174 -> qca988x  228.383 mbps
  qca988x -> qca6174  238.528 mbps

 VHT40 (your config):
  qca6174 -> qca988x  234.64  mbps
  qca988x -> qca6174  298.723 mbps

 VHT80 (vht_oper_centr_freq_seg0_idx=44, vht_oper_chwidth=1)
  qca6174 -> qca988x  377.092 mbps
  qca988x -> qca6174  483.287 mbps


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