Re: IWD 1.27 with brcmfmac not working for roaming

[James Prestwood <prestwoj@gmail.com>]

On 10/22/24 11:47 AM, Martin Petzold wrote:
> Hi Denis,
>
> Am 22.10.24 um 20:44 schrieb Denis Kenzior:
>> Hi James, Arend,
>>
>>> errors out as its unsupported. I don't believe there is any way for 
>>> IWD to check if OWE is supported by the driver, and we just assume 
>>> it is (Arend, maybe you know of a way to check this?). It appears 
>>> that what you need is a new IWD option 
>>
>> Indeed, there's no explicit way of checking supported AKMs.  The 
>> NL80211 API isn't much help either:
>>
>> /**
>>  * DOC: OWE DH IE handling offload
>>  *
>>  * By setting @NL80211_EXT_FEATURE_OWE_OFFLOAD flag, drivers can 
>> indicate
>>  * kernel/application space to avoid DH IE handling. When this flag is
>>  * advertised, the driver/device will take care of DH IE inclusion and
>>  * processing of peer DH IE to generate PMK.
>>  */
>>
>> Perhaps for FullMAC, iwd should start checking for 
>> EXT_FEATURE_OWE_OFFLOAD presence, and if not present, do not use 
>> OWE.  Too bad no upstream driver actually sets this bit. Unless... 
>> maybe OWE works with other FullMAC devices and we'd break things for 
>> those...?  Kernel folks really need to chime in here.
> If you provide a patch for kernel driver or IWD, I can test tomorrow.

There are two RFC patches on the list, which I haven't tested but 
hopefully that'll do what you need. You will need to add this to main.conf:

[DriverQuirks]
OweDisable=brcmfmac