Re: [PATCH wireless-next] wifi: mac80211: Fix ADDBA request rejection after MLD link removal

[Manish Dharanenthiran <manish.dharanenthiran@oss.qualcomm.com>]

On 5/11/2026 3:41 PM, Johannes Berg wrote:
> On Mon, 2026-05-11 at 15:40 +0530, Manish Dharanenthiran wrote:
>>
>> Even-then, if there is a actual change, it goes to invoke the UPDATE.
>> For the driver(s) which didn't implement the UPDATE yet, should we use
>> additional flags to notify the UPDATE support or returning a failure
>> from driver should be suffice?
> 
> I hope drivers would refuse unknown operations, so I think returning a
> failure is fine. We can quickly review the drivers that handle this to
> make sure, but I'd prefer not to have a feature flag.
> 
> johannes

Quickly checked the drivers which sets 'SUPPORTS_REORDERING_BUFFER',

  - ath11k/ath12k drivers silently returns a failure if the 'op' is not 
handled.

  - Intel drivers do a 'WARN_ON_ONCE(1)' as default. Would need a change 
to avoid calling warning for UPDATE operation.

  - And Mediatek drivers return success as default. (I guess, this 
should be fine, but would request comment from them about keeping this 
behavior for UPDATE operation)