[RFC 1/3] nl/cfg80211: add chan_time for scan request

[Johannes Berg]

On Mon, 2013-07-29 at 10:39 +0200, Michal Kazior wrote:

> + * @NL80211_ATTR_SCAN_CHAN_TIME: Specifies how many msec should a driver spend
> + *	on each channel during scanning. This is optional and the default is
> + *	leave the decision up to the driver. This setting may, but preferrably

typo: preferably :)

> + *	shouldn't, be ignored by driver.

This seems a bit iffy - you don't differentiate between active/passive
scans?

Also maybe there should be a bit saying "I support scan timing" or even
the min/max times?

This also interferes a bit with some other scan optimisations that could
be done at a low firmware level, so I think we should be careful and
actually say that this is really more intended for measurement use cases
and not for normal scans?

Or maybe we should have a separate measurement command with similar
semantics? This all doesn't seem very clear to me yet :)

johannes