Re: [PATCH 3/3] wifi: cfg80211: check if AP has been started before adding new station

[Slawomir Stepien <sst@poczta.fm>]

On wrz 04, 2026 11:25, Johannes Berg wrote:
> On Thu, 2026-08-13 at 11:04 +0200, Slawomir Stepien wrote:
> > 
> >  	case NL80211_IFTYPE_P2P_GO:
> > +		/* Add a new station only after the AP and link has been started */
> > +		link_id = wdev->valid_links ? params.link_sta_params.link_id : 0;
> 
> max() maybe?
> 
> > +		if (!wdev->links[link_id].ap.beacon_interval)
> > +			return -ENETDOWN;
> 
> I think the same issue might exist also for mesh, maybe address that as
> well?
> 
> And I think you could have a fourth patch to clean up the mac80211 code
> to no longer handle the "STA creation on AP_VLAN" case?

But is there such case?
The only part I think is related is the handling code when params.vlan is set. However, this code is
still OK. I do not see any other code that would be a good candidate for removal/change.

Am I missing something here?

Also, during this check, I've came to a conclusion that I will reword a bit the commit message for
PATCH 1/3, since userspace can still add STA to AP_VLAN in one go, using
attrs[NL80211_ATTR_STA_VLAN] and that's fine, since the wdev would be the base AP interface, so all
check will happen.

-- 
Slawomir Stepien