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mac80211: expose API allowing station iteration 

Allow drivers to iterate all stations currently uploaded to them.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Arik Nemtsov 2014-10-22 12:30:59 +03:00 committed by Johannes Berg
parent 2bad7748b3
commit 0fc1e0495f
2 changed files with 44 additions and 0 deletions
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16
include/net/mac80211.h
View File

@ -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
*

28
net/mac80211/util.c
View File

@ -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);