wt., 3 wrz 2024 o 09:47 Kalle Valo <kvalo@xxxxxxxxxx> napisał(a): > > + linux-wireless > > david Atkins <david@xxxxxxxxxxxxxx> writes: > > > ... > >> >>> 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. > >> >>> > >> >> ath12k/WCN7850 supports EHT, but with NSS only 2. Here the AP > >> >> requires NSS to be no less than 4, that is why EHT connection was disabled. > >> > > >> > Which field is requiring NSS of 4, I'm only seeing a maximum of 4, the > >> Qualcomm windows driver will connect to the same AP, we had assumed that > >> that ath12k would do the same. > >> Basic EHT-MCS And Nss Set: 0x44444444 > > > > My understanding of the spec is that there are maximum numbers of > > streams though, are you saying the AP has to advertise 0x22222222 > > which would then prevent a 4x4 client (say an extender) from > > connecting with 4 streams? I note that the Qualcomm windows driver for > > Hamilton works with the AP and an Intel BE200 also works both of which > > will be in at most 2x2 > > Did you test Intel BE200 with the Windows driver? Johannes mentioned > that ieee80211_verify_sta_eht_mcs_support() in mac80211 checks this so I > would assume that iwlwifi also behaves like ath12k. > Yes, this is AP issue - hostapd fix required - advertise 0x11111 ... In other case station < 4nss will drop to HE only. BR Janusz
