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From: Denis Kenzior <denkenz@gmail.com>
To: Johannes Berg <johannes@sipsolutions.net>,
	James Prestwood <prestwoj@gmail.com>,
	linux-wireless@vger.kernel.org
Subject: Re: [PATCH 2/2] mac80211: Support LIVE_ADDRESS_CHANGE feature
Date: Tue, 8 Oct 2019 11:23:14 -0500	[thread overview]
Message-ID: <1bb5450b-bc4e-8c83-f99e-fc7e739b08f0@gmail.com> (raw)
In-Reply-To: <f02b81f6dac29da911f8793b952a9efb6a1fdb62.camel@sipsolutions.net>

Hi Johannes,

>> Indeed.  But that is not what you were suggesting earlier with just
>> checking local->scanning.  So if scan_req contains a wdev, then yes it
>> should be possible to compare the scan_req->wdev to the interface being
>> changed.
> 
> Well, yes, but only because I was incrementally going from James's
> patch, which was checking that only.

Well, something to improve.  Sometimes it is pretty hard to figure out 
what you mean.

> 
> Similar with the other local-> things being checked here, btw, though in
> some cases it might be harder to actually determine which wdev is doing
> something and which isn't.

Right

> 
>>> No, this typically cannot be fixed, and it doesn't really make sense.
>>> The NIC cannot possibly do two scans at a time since it has only a
>>> single radio resource :-)
>>
>> So why is the scan request not per phy then?  And should mac address
>> even affect the ongoing scan?  Can we simply change it with the scan
>> ongoing?
> 
> There are things that affect the scan from the interface, e.g.
> capability overrides, (extended) capabilities, the MAC address is used
> unless randomization is requested, etc.
> 

But they shouldn't change due a mac address change?  I wonder if we can 
further relax the requirements to allow mac change if 
NL80211_SCAN_FLAG_RANDOM_ADDR was used?

Regards,
-Denis

  reply	other threads:[~2019-10-08 16:33 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-13 19:59 [PATCH 1/2] nl80211: Add LIVE_ADDR_CHANGE feature James Prestwood
2019-09-13 19:59 ` [PATCH 2/2] mac80211: Support LIVE_ADDRESS_CHANGE feature James Prestwood
2019-10-04 11:56   ` Johannes Berg
2019-10-04 16:25     ` James Prestwood
2019-10-04 16:42       ` James Prestwood
2019-10-07 21:16         ` Johannes Berg
2019-10-08 15:37           ` Denis Kenzior
2019-10-08 15:52             ` Johannes Berg
2019-10-08 15:53               ` Denis Kenzior
2019-10-08 16:24                 ` Johannes Berg
2019-10-08 16:23                   ` Denis Kenzior [this message]
2019-10-08 17:08                     ` Johannes Berg
2019-10-08 18:50                       ` Denis Kenzior
2019-10-08 20:16                         ` Johannes Berg
2019-10-08 20:55                           ` Denis Kenzior
2019-10-10 15:18                             ` Johannes Berg
2019-10-07 21:11       ` Johannes Berg
2019-10-08 15:28         ` Denis Kenzior
2019-10-08 15:49           ` Johannes Berg
2019-09-13 20:48 ` [PATCH 1/2] nl80211: Add LIVE_ADDR_CHANGE feature Johannes Berg
2019-09-13 20:56   ` James Prestwood
2019-09-13 21:01     ` Johannes Berg
2019-09-13 21:14       ` James Prestwood
2019-09-17 20:09         ` James Prestwood
2019-10-01  9:14         ` Johannes Berg
2019-10-08 22:13           ` James Prestwood

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