From: Arik Nemtsov <[email protected]> Allow drivers to iterate all stations currently uploaded to them.
Signed-off-by: Arik Nemtsov <[email protected]> Signed-off-by: Emmanuel Grumbach <[email protected]> --- include/net/mac80211.h | 16 ++++++++++++++++ net/mac80211/util.c | 28 ++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 9dc5e76..e544bbf 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -4190,6 +4190,22 @@ void ieee80211_iterate_active_interfaces_rtnl(struct ieee80211_hw *hw, 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 * * Drivers and mac80211 use this to add work onto the mac80211 workqueue. diff --git a/net/mac80211/util.c b/net/mac80211/util.c index c76c9d7..3d07d8d 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -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); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
