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Re: [PATCH] wifi: mac80211: remove DEAUTH_NEED_MGD_TX_PREP

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On Thu, 2024-06-27 at 12:47 +0200, Jonas Gorski wrote:
> 
> > +++ b/net/mac80211/mlme.c
> > @@ -3521,6 +3521,10 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
> >         u64 changed = 0;
> >         struct ieee80211_prep_tx_info info = {
> >                 .subtype = stype,
> > +               .was_assoc = true,
> > +               .link_id = sdata->vif.active_links ?
> > +                               __ffs(sdata->vif.active_links) :
> > +                               0,
> 
> Shouldn't the else be -1?

Hm. We didn't document whether it should be 0 or -1 for non-MLO.

Off-hand, 0 probably makes more sense, then you can use it to index the
link array etc. unconditionally.

We sometimes set it to 0 or -1 though, e.g. -1 for auth because we get
it directly from cfg80211 ...

However, drv_mgd_prepare_tx() has

	info->link_id = info->link_id < 0 ? 0 : info->link_id;

so in the end, it doesn't matter!

> Here it would be ffs(0) - 1, which is -1, not 0.

Indeed. I guess with the way it's handled in drv_mgd_prepare_tx() I can
just simplify the other one too.

johannes





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