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Re: [PATCH v2] wifi: cfg80211: skip regulatory checks when the channel is punctured

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On Thu, 2024-12-19 at 16:27 +0530, Kavita Kavita wrote:
> 
> On 12/19/2024 2:31 PM, Johannes Berg wrote:
> > On Thu, 2024-12-19 at 11:35 +0530, Kavita Kavita wrote:
> > > 
> > > The for_each_subchan() macro will not work for this. When sub channel is
> > > null, it will terminate the loop, but in this case, we should continue
> > > checking other sub channels.
> > 
> > Wait, I'm confused by what you're saying here. The for_each_subchan()
> > macro should iterate over all enabled (not punctured) subchannels, so
> > why would it not be applicable here?
> > 
> 
> So, In the following regulatory checks: cfg80211_get_chans_dfs_required, 
> cfg80211_get_chans_dfs_usable, cfg80211_get_chans_dfs_available, and so on.
> 
> When iterating over primary or secondary bandwidth, if we encounter any 
> null subchannel,

What do you mean by "null subchannel"?

In all of these cases, if you have e.g. the following 320 MHz channel,
where "x" indicates removed by puncturing:

| | | | | | | | | | | | |x|x| | |

then of course it should iterate over all the non-removed 14
subchannels, not just the first 12?

> the loop will terminate, and we will not check the 
> remaining subchannels.

As you write it here, that seems wrong for all cases?

johannes





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