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authorIvo van Doorn <ivdoorn@gmail.com>2008-05-10 13:40:49 +0200
committerJohn W. Linville <linville@tuxdriver.com>2008-05-16 17:15:09 -0400
commit2f561feb386d6adefbad63c59a1fcd298ac6a79c (patch)
tree9f2979c3539314b58f9a417b26347b7b09dd2722 /include/net
parent34a961f7db36f10abd6b153411fe8c810f21f6b3 (diff)
mac80211: Add RTNL version of ieee80211_iterate_active_interfaces
Since commit e38bad4766a110b61fa6038f10be16ced8c6cc38 mac80211: make ieee80211_iterate_active_interfaces not need rtnl rt2500usb and rt73usb broke down due to attempting register access in atomic context (which is not possible for USB hardware). This patch restores ieee80211_iterate_active_interfaces() to use RTNL lock, and provides the non-RTNL version under a new name: ieee80211_iterate_active_interfaces_atomic() So far only rt2x00 uses ieee80211_iterate_active_interfaces(), and those drivers require the RTNL version of ieee80211_iterate_active_interfaces(). Since they already call that function directly, this patch will automatically fix the USB rt2x00 drivers. v2: Rename ieee80211_iterate_active_interfaces_rtnl Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/mac80211.h25
1 files changed, 23 insertions, 2 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