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Re: [PATCH] wifi: mac80211_hwsim: Prevent tsf from setting if beacon is disabled

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On Wed, 23 Apr 2025 16:04:04 +0200, Johannes Berg wrote:
> On Wed, 2025-04-23 at 21:56 +0800, Edward Adam Davis wrote:
> > On Wed, 23 Apr 2025 14:53:53 +0200, Johannes Berg wrote:
> > > > --- a/drivers/net/wireless/virtual/mac80211_hwsim.c
> > > > +++ b/drivers/net/wireless/virtual/mac80211_hwsim.c
> > > > @@ -1226,6 +1226,11 @@ static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
> > > >  {
> > > >  	struct mac80211_hwsim_data *data = hw->priv;
> > > >  	u64 now = mac80211_hwsim_get_tsf(hw, vif);
> > > > +	struct ieee80211_bss_conf *conf = link_conf_dereference_protected(vif,
> > > > +			data->link_data[0].link_id);
> > > > +
> > > > +	if (conf && !conf->enable_beacon)
> > > > +		return;
> > > >  	/* MLD not supported here */
> > > >  	u32 bcn_int = data->link_data[0].beacon_int;
> > > >  	u64 delta = abs(tsf - now);
> > >
> > > Please keep kernel coding style - the line break there is awful (but
> > > with "conf = ..." on a line by itself it can be just one line), and you
> > > shouldn't have code before variable declarations.
> > like this?
> 
> Looks good I guess, not sure you wanted bcn_int/delta to be calculated
> before or after.
It will be all right.
I will send V2 patch.
> 
> > > The comment should probably also move because it's relevant for your new
> > > [0] as well.
> > I don't understand what you mean.
> 
> The "/* MLD not supported here */" comment refers to the [0] - it
> explains why the [0] (rather than link id) is OK. So it also applies to
> your [0], if you're going to put it before the comment then IMHO it
> makes sense to move the comment. With what you did now the comment is
> still earlier though, of course.
Oh, Got it.

Edward





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