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Commit 0fc1e049 authored by Arik Nemtsov's avatar Arik Nemtsov Committed by Johannes Berg
Browse files

mac80211: expose API allowing station iteration 



Allow drivers to iterate all stations currently uploaded to them.

Signed-off-by: default avatarArik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: default avatarEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 2bad7748

include/net/mac80211.h

+16 −0
Original line number Diff line number Diff line
@@ -4192,6 +4192,22 @@ void ieee80211_iterate_active_interfaces_rtnl(struct ieee80211_hw *hw, 
						struct ieee80211_vif *vif),

					      void *data);



/**

 * ieee80211_iterate_stations_atomic - iterate stations

 *

 * This function iterates over all stations associated with a given

 * hardware that are currently uploaded to the driver and calls the callback

 * function for them.

 * This function requires the iterator callback function to be atomic,

 *

 * @hw: the hardware struct of which the interfaces should be iterated over

 * @iterator: the iterator function to call, cannot sleep

 * @data: first argument of the iterator function

 */

void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,

				       void (*iterator)(void *data,

						struct ieee80211_sta *sta),

				       void *data);

/**

 * ieee80211_queue_work - add work onto the mac80211 workqueue

 *

net/mac80211/util.c

+28 −0
Original line number Diff line number Diff line
@@ -693,6 +693,34 @@ void ieee80211_iterate_active_interfaces_rtnl( 
}

EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);



static void __iterate_stations(struct ieee80211_local *local,

			       void (*iterator)(void *data,

						struct ieee80211_sta *sta),

			       void *data)

{

	struct sta_info *sta;



	list_for_each_entry_rcu(sta, &local->sta_list, list) {

		if (!sta->uploaded)

			continue;



		iterator(data, &sta->sta);

	}

}



void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,

			void (*iterator)(void *data,

					 struct ieee80211_sta *sta),

			void *data)

{

	struct ieee80211_local *local = hw_to_local(hw);



	rcu_read_lock();

	__iterate_stations(local, iterator, data);

	rcu_read_unlock();

}

EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);



struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)

{

	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);