IBSS mode is now supported by CT firmware.

Ben Greear greearb at candelatech.com
Fri Nov 28 08:28:34 PST 2014

I'll investigate the rate-control logic.  I don't know enough
about IBSS currently to know why it would use different rate-ctrl logic than
the normal sta/ap, but hopefully I can figure it out.

Can you post some details on how you configure HT20 v/s legacy mode
for IBSS interfaces?

Do you have any reason to believe the problem is in the driver or mac80211
stack, or is this all a firmware issue?

And, if anyone has a different /AC NIC that can do IBSS, I'm curious
if ath10k will receive at higher speeds?


On 11/28/2014 03:42 AM, Yeoh Chun-Yeow wrote:
> For CT firmware, IBSS mode works, but again the Rate Control in HT20
> mode is not working at all. It always stuck with 6Mbps Tx Rate.
> [  196.030000] ath10k_pci 0000:00:00.0: rx skb 869a5840 len 116 peer
> 04:f0:21:0c:a5:44  ucast sn 95  rate_idx 0 vht_nss 0 freq 5180 band 1
> flag 0x200000 fcs-err 0 mic-err 0 amsdu-more 0
> For legacy mode, rate control works. rate_idx to 7 or 54Mbps.
> [  156.070000] ath10k_pci 0000:00:00.0: rx skb 86af0900 len 116 peer
> 04:f0:21:0c:a5:1c  ucast sn 95  rate_idx 7 vht_nss 0 freq 5180 band 1
> flag 0x200000 fcs-err 0 mic-err 0 amsdu-more 0
> Similar to 636 firmware.
> ----
> ChunYeow
> On Thu, Nov 27, 2014 at 9:04 AM, Yeoh Chun-Yeow <yeohchunyeow at gmail.com> wrote:
>> On Thu, Nov 27, 2014 at 6:36 AM, Pushpal Sidhu <psidhu at gateworks.com> wrote:
>>> On Tue, Nov 25, 2014 at 4:59 PM, Ben Greear <greearb at candelatech.com> wrote:
>>>> I still cannot get WPA2 encryption to work, but open authentication
>>>> seems to work fine.  I still have a good bit more testing to do.
>>>> I cannot get ath9k to do encryption in IBSS mode either, so I
>>>> probably am mis-configuring something.
>>> I don't believe WPA2 is supported with adhoc (at least through
>>> wpa_supplicant). However, WPA should be and while testing your
>>> firmware, I found that it doesn't seem to work (They don't see each
>>> other and thus don't associate).
>>> I also found that, like the 999.x firmware, the rate's do not go
>>> higher than 54mbit/s. Is this due to the firmware not advertising
>>> proper rates or..?
>> Are you joining the adhoc network in non-HT mode? Anyway, even if you
>> use HT mode, the rate control is not working for 999.x firmware and
>> always stuck at 6Mbps as far as I know.
>> -----
>> Chun-Yeow
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Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com

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