Johannes Berg <johannes@xxxxxxxxxxxxxxxx> writes:
> From: Johannes Berg <johannes.berg@xxxxxxxxx>
>
> Add a new "peer measurement" API, that can be used to measure
> certain things related to a peer. Right now, only implement
> FTM (flight time measurement) over it, but the idea is that
> it'll be extensible to also support measuring the necessary
> things to calculate e.g. angle-of-arrival for WiGig.
>
> The API is structured to have a generic list of peers and
> channels to measure with/on, and then for each of those a
> set of measurements (again, only FTM right now) to perform.
>
> Results are sent to the requesting socket, including a final
> complete message.
>
> Closing the controlling netlink socket will abort a running
> measurement.
>
> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
> ---
> v3:
> - add a bit to report "final" for partial results
> - remove list keeping etc. and just unicast out the results
> to the requester (big code reduction ...)
> - also send complete message unicast, and as a result
> remove the multicast group
> - separate out struct cfg80211_pmsr_ftm_request_peer
> from struct cfg80211_pmsr_request_peer
> - document timeout == 0 if no timeout
> - disallow setting timeout nl80211 attribute to 0,
> must not include attribute for no timeout
> - make MAC address randomization optional
> - change num bursts exponent default to 0 (1 burst, rather
> rather than the old default of 15==don't care)
[...]
> @@ -3176,6 +3361,8 @@ struct cfg80211_ftm_responder_stats {
> *
> * @get_ftm_responder_stats: Retrieve FTM responder statistics, if available.
> * Statistics should be cumulative, currently no way to reset is provided.
> + * @start_pmsr: start peer measurement (e.g. FTM)
> + * @abort_pmsr: abort peer measurement
> */
> struct cfg80211_ops {
> int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
It would be nice to document if these ops can sleep or not.
--
Kalle Valo
