Re: [PATCH] wifi: brcmfmac: configure SAE PWE method for external SAE AP

[Arend van Spriel]

On 29/07/2026 07:34, Bogdan Nicolae wrote:
> When bringing up a WPA3-SAE SoftAP with external (user space) SAE, the
> driver never told the firmware which SAE Password Element (PWE) method to
> accept. The firmware was observed to corrupt its heap over time due to
> this omission, leading to firmware trap (data abort in heap allocator).
>
> Parse the beacon IEs on start_ap() and set the extsae_pwe iovar
> accordingly: 2 when the RSNX IE advertises H2E, 1 when an H2E-only
> membership selector is present, 0 otherwise. This matches the behaviour
> of the upstream/vendor driver and only applies to SAE-capable APs when
> external SAE is supported.

This makes sense, but may I ask what device do you have? Suspect it is a 
Cypress/Infineon chip. I could not find the iovar in our (Broadcom bca) 
code base so I suspect it is vendor specific.

Regards,
Arend