Hi Johannes,
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?
No, at least with HW scan that would completely confuse the driver -
since from the driver's POV we'd remove the interface it's currently
managing the scan for.
So help me understand this better. Just by virtue of copying the new
mac into sdata->vif.addr we'd be confusing the driver such that it can't
associate the ongoing scan request to the wdev it was started on? Even
when it has all this info? I mean you have a single scan request on a
phy, how hard can this be? :)
Note that some apps perform poor-man's scan address randomization by
varying the mac (I assume prior to each nth scan). So being able to
change the mac while scanning might be a boon to them. I personally
don't think changing mac via rtnl to accomplish this is a great idea,
but just tossing it out for you.
Regards,
-Denis
