wcn7850 issues

[david Atkins]

> On 8/30/2024 1:55 PM, david Atkins wrote:
> > Any updates on this? We still cannot register a Hamilton card with
> > ath12k driver with a 4x4 AP
> 
> The 'Basic EHT-MCS And Nss Set' indicate the minimal requirement, not the
> max, see spec:
> 
> 35.15 EHT BSS operation
> 35.15.1 Basic EHT BSS operation
> 
> An EHT STA has dot11EHTOptionImplemented equal to true.
> The basic EHT-MCS and NSS set is the set of <EHT-MCS, NSS> tuples that are
> supported by all EHT STAs that are members of an EHT BSS. ...
> 
> An EHT STA shall not attempt to join (MLME-JOIN.request primitive) a BSS
> unless it supports (i.e., is able to both transmit and receive using) all of the
> <EHT-MCS, NSS> tuples in the basic EHT-MCS and NSS set.

I'm unsure what's missing here, this is the beacon data relating to EHT MCS/NSS

            Supported EHT-MCS and NSS Set
                EHT-MCS Map (BW <= 80MHz): 0x444444
                    .... .... .... .... .... 0100 = Rx Max Nss That Supports EHT-MCS 0-9: 4
                    .... .... .... .... 0100 .... = Tx Max Nss That Supports EHT-MCS 0-9: 4
                    .... .... .... 0100 .... .... = Rx Max Nss That Supports EHT-MCS 10-11: 4
                    .... .... 0100 .... .... .... = Tx Max Nss That Supports EHT-MCS 10-11: 4
                    .... 0100 .... .... .... .... = Rx Max Nss That Supports EHT-MCS 12-13: 4
                    0100 .... .... .... .... .... = Tx Max Nss That Supports EHT-MCS 12-13: 4
        Ext Tag: EHT Operation (802.11be D3.0)
            Ext Tag length: 8 (Tag len: 9)
            Ext Tag Number: EHT Operation (802.11be D3.0) (106)
            EHT Operation Parameters: 0x01, EHT Operation Information Present
                .... ...1 = EHT Operation Information Present: True
                .... ..0. = Disabled Subchannel Bitmap Present: False
                .... .0.. = EHT Default PE Duration: False
                .... 0... = Group Addressed BU Indication Limit: False
                ..00 .... = Group Addressed BU Indication Exponent: 0
                00.. .... = Reserved: 0x0
            Basic EHT-MCS And Nss Set: 0x44444444
            Control: 0x02, Channel Width: 80 MHz EHT BSS bandwidth
                .... .010 = Channel Width: 80 MHz EHT BSS bandwidth (2)
                0000 0... = Reserved: 0x00

Are you saying the ath12k driver does not support these features? If not can you clarify the issue so I can raise with the AP team.

David