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-rw-r--r--include/net/mac80211.h25
-rw-r--r--net/mac80211/util.c37
2 files changed, 59 insertions, 3 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 4a80d74975e..dae3f9ec115 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1594,13 +1594,16 @@ void ieee80211_wake_queues(struct ieee80211_hw *hw);
void ieee80211_scan_completed(struct ieee80211_hw *hw);
/**
- * ieee80211_iterate_active_interfaces - iterate active interfaces
+ * ieee80211_iterate_active_interfaces- iterate active interfaces
*
* This function iterates over the interfaces associated with a given
* hardware that are currently active and calls the callback for them.
+ * This function allows the iterator function to sleep, when the iterator
+ * function is atomic @ieee80211_iterate_active_interfaces_atomic can
+ * be used.
*
* @hw: the hardware struct of which the interfaces should be iterated over
- * @iterator: the iterator function to call, cannot sleep
+ * @iterator: the iterator function to call
* @data: first argument of the iterator function
*/
void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw,
@@ -1609,6 +1612,24 @@ void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw,
void *data);
/**
+ * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces
+ *
+ * This function iterates over the interfaces associated with a given
+ * hardware that are currently active and calls the callback for them.
+ * This function requires the iterator callback function to be atomic,
+ * if that is not desired, use @ieee80211_iterate_active_interfaces instead.
+ *
+ * @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_active_interfaces_atomic(struct ieee80211_hw *hw,
+ void (*iterator)(void *data,
+ u8 *mac,
+ struct ieee80211_vif *vif),
+ void *data);
+
+/**
* ieee80211_start_tx_ba_session - Start a tx Block Ack session.
* @hw: pointer as obtained from ieee80211_alloc_hw().
* @ra: receiver address of the BA session recipient
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 24a465c4df0..131e9e6c8a3 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -389,6 +389,41 @@ void ieee80211_iterate_active_interfaces(
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
+ rtnl_lock();
+
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_INVALID:
+ case IEEE80211_IF_TYPE_MNTR:
+ case IEEE80211_IF_TYPE_VLAN:
+ continue;
+ case IEEE80211_IF_TYPE_AP:
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS:
+ case IEEE80211_IF_TYPE_WDS:
+ case IEEE80211_IF_TYPE_MESH_POINT:
+ break;
+ }
+ if (sdata->dev == local->mdev)
+ continue;
+ if (netif_running(sdata->dev))
+ iterator(data, sdata->dev->dev_addr,
+ &sdata->vif);
+ }
+
+ rtnl_unlock();
+}
+EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces);
+
+void ieee80211_iterate_active_interfaces_atomic(
+ struct ieee80211_hw *hw,
+ void (*iterator)(void *data, u8 *mac,
+ struct ieee80211_vif *vif),
+ void *data)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_sub_if_data *sdata;
+
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
@@ -413,4 +448,4 @@ void ieee80211_iterate_active_interfaces(
rcu_read_unlock();
}
-EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces);
+EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);