Re: [RFC] cfg80211: survey report capability

[Johannes Berg <johannes@sipsolutions.net>]

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On Tue, 2009-11-10 at 11:17 +0100, Johannes Berg wrote:

> Right now you're retrieving a single channel but can't even control
> which one. Maybe that's useful functionality in addition to dump when
> you _can_ ask for information on a specific channel, but that'd have to
> pass in the frequency from userspace.
> 
> Retrieving all data like you've implemented (though I guess you forgot
> the multiple channels case) should be a dump. Maybe that's sufficient
> since there won't be huge amounts of data and userspace can just pick
> out what it needs from the dump.

And maybe the get_survey() driver call can actually pass in the channel
pointer ... then the drivers/mac80211 don't need to implement both
get_survey() and dump_survey() since cfg80211 knows the valid channel
list anyway. But that means iterating over the channel list all the
time, even if the driver can only return values for a single channel.

johannes

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