Re: [RFC] P2P find offload

[Johannes Berg <johannes@sipsolutions.net>]

On Thu, 2013-03-07 at 09:10 +0200, Vladimir Kondratiev wrote:

> > We had something like this before. I think you need to specify not the
> > wiphy but a netdev though, to know what MAC address to use. In fact, not
> > a netdev but a wdev, so it can work on P2P_Device type wdevs.

> Why do we need wdev here? It should be similar to scan, as p2p scan composed
> of legacy scan and p2p find. Scan have only wiphy.
> It's no problem to add wdev as well, of course. I'll add it.

No, scan also has the device? It is needed for the MAC address, of
course.

> > Also, timings? Or is that left to the driver?

> Yes, timing is up to the driver. Point is, firmware may have its reasons
> when switch search/listen phases.

Some hints from userspace might be helpful though?

> > wpa_s will need to know whether or not it responded, unless you mandate
> > that it must respond by itself -- not sure if you should do that though?

> Same way as today wpa_s know whether driver/firmware answer probes - 
> WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD. Or, should I add one more flag, like
> WIPHY_FLAG_P2P_PROBE_RESP_OFFLOAD?

AP_PROBE_RESP_OFFLOAD doesn't seem appropriate? just read out the name
aloud, it starts with "AP" ;-)

johannes