Only Lowest Legacy Rate 6Mbps used by Adhoc Mode

[Yeoh Chun-Yeow]

> You can try to set/force tx rate using iw:
>
> Eg. setup legacy 18Mbps
> iw wlanX set bitrates legacy-5 18 ht-mcs-5 vht-mcs-5
>
> Set nss=1
> iw wlanX set bitrates legacy-5 ht-mcs-5 vht-mcs-5 1:0-9
>
> And check using sniffer if that will work - I didn't check adhoc.
>

Yes, this work. I can even force the HT rate.
[  559.410000] ath10k: rx skb 86feec00 len 116 ht rate_idx 7 vht_nss 0
freq 5180 band 1 flag 0x200200 fcs-err 0
[  560.410000] ath10k: rx skb 86884900 len 116 ht rate_idx 7 vht_nss 0
freq 5180 band 1 flag 0x200200 fcs-err 0

Hmm, it seems that rate control is not working for adhoc. Where to
look for a fix?

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Chun-Yeow