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

[Johannes Berg <johannes@sipsolutions.net>]

On Mon, 2026-05-11 at 11:56 +0530, Manish Dharanenthiran wrote:
> No, there is no implementations that combine these two, but there are 
> cases where the update AddBA request can be received from the station 
> with link reconfiguration.
> 
> For instance, if a station associated in 2 GHz, later with link 
> reconfiguration station can either move to 5 GHz or it can add 5 GHz (as 
> MLD). Station then can send a AddBA request to update the window size or 
> other related parameters.

Ah, well, OK - technically an implementation can do that all the time
(and technically we can refuse it all the time), but I guess then that
some implementations do it with link reconfiguration, and also don't
like the refusal :)

> 
> We believe that a no-op update is not required (or at-least we couldn't 
> think of a case in which that is actually needed) as there can might be 
> an actual change in the subsequent AddBA request.

I just think that once we require an UPDATE call from the driver, that
raises the question of whether we should even call it for a no-op. This
seems a bit strange? And if we don't then we wouldn't require it for no-
ops either, which is probably generally good for drivers that don't
(immediately) implement the UPDATE.

johannes