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

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
......@@ -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
*
......
......@@ -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);
......
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