[PATCH] wifi: ath12k: fix firmware crash due to invalid peer nss

[Kalle Valo]

Ajith C <quic_ajithc at quicinc.com> wrote:

> Currently, if the access point receives an association
> request containing an Extended HE Capabilities Information
> Element with an invalid MCS-NSS, it triggers a firmware
> crash.
> 
> This issue arises when EHT-PHY capabilities shows support
> for a bandwidth and MCS-NSS set for that particular
> bandwidth is filled by zeros and due to this, driver obtains
> peer_nss as 0 and sending this value to firmware causes
> crash.
> 
> Address this issue by implementing a validation step for
> the peer_nss value before passing it to the firmware. If
> the value is greater than zero, proceed with forwarding
> it to the firmware. However, if the value is invalid,
> reject the association request to prevent potential
> firmware crashes.
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
> 
> Signed-off-by: Ajith C <quic_ajithc at quicinc.com>
> Acked-by: Jeff Johnson <quic_jjohnson at quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo at quicinc.com>

Patch applied to ath-next branch of ath.git, thanks.

db163a463bb9 wifi: ath12k: fix firmware crash due to invalid peer nss

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20240613053528.2541645-1-quic_ajithc@quicinc.com/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches