Re: RFC Patch v2: Add signal strength to nl80211station info

[Henning Rogge <hrogge@googlemail.com>]

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On Saturday 06 December 2008 16:59:32 Johannes Berg wrote:
> For one, I'm a bit concerned that the calculation is fairly complex, and
> may not always be necessary; especially divisions can be expensive on
> some CPUs.
What if I push the calculation into nl80211.c, so it will be only called when 
the a userspace process requests the station info ? This would mean the 
calculation is not done at all until someone needs the rate info.

> Also, there are duplicate numbers possible, so just the pure bitrate
> will _not_ actually be "the typical information" because it's not
> specific enough, when debugging, for example, you will probably need to
> know whether it's short-gi or not.
Don't you think the normal nl80211 use will just be a display of "how fast are 
we doing at the moment" ? Most applications don't even need to set a rate, 
they just want to show the user some feedback.

Henning


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