Re: technology preview: scan with cfg80211

[Johannes Berg <johannes@sipsolutions.net>]

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On Fri, 2008-09-19 at 11:03 +0300, Tomas Winkler wrote:
> On Fri, Sep 19, 2008 at 6:41 AM, Johannes Berg
> <johannes@sipsolutions.net> wrote:
> > On Fri, 2008-09-19 at 05:18 +0200, Johannes Berg wrote:
> >> This is totally incomplete:
> >>
> >> cfg80211 needs to
> >>  * actually hash on the BSSID instead of putting things into a list
> >>  * provide BSS list functions so mac80211 need not keep track
> >>  * allow a "private" area in each scan result with hw-provided size
> >>  * handle mesh properly
> >>  * provide a way for the hw to limit the number of SSIDs in a scan

> Don't understand this requirement?

Limiting the number of SSIDs? Well I don't want to have userspace
request an active scan for like 100 SSIDs, which currently _is_ possible
(mac80211 will reject anything but 1 right now though). Hence, I want to
have a "max probes" or something like that in the wiphy structure that
we can use (a) tell userspace how many we support and (b) limit the
number appropriately.

>   * provide a way to limit the number of channels in a scan (for
> faster roaming candidate search)

Hey, unfair! ;) I did leave a lot of TODOs but this wasn't one of them.
You can provide a channel list and it'll scan only those (except hw scan
right now but that'll be fixed once we pass the scan request struct
through)

johannes

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