1 files changed, 31 insertions, 0 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index acf9eaf59641..dc2ea46eb5d6 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1622,6 +1622,14 @@ enum ieee80211_tx_sync_type {
 };
 
 /**
+ * enum ieee80211_frame_release_type - frame release reason
+ * @IEEE80211_FRAME_RELEASE_PSPOLL: frame released for PS-Poll
+ */
+enum ieee80211_frame_release_type {
+        IEEE80211_FRAME_RELEASE_PSPOLL,
+};
+
+/**
  * struct ieee80211_ops - callbacks from mac80211 to the driver
  *
  * This structure contains various callbacks that the driver may
@@ -1931,6 +1939,23 @@ enum ieee80211_tx_sync_type {
  *      The callback can sleep.
  * @rssi_callback: Notify driver when the average RSSI goes above/below
  *      thresholds that were registered previously. The callback can sleep.
+ *
+ * @release_buffered_frames: Release buffered frames according to the given
+ *      parameters. In the case where the driver buffers some frames for
+ *      sleeping stations mac80211 will use this callback to tell the driver
+ *      to release some frames, either for PS-poll or uAPSD.
+ *      Note that if the @more_data paramter is %false the driver must check
+ *      if there are more frames on the given TIDs, and if there are more than
+ *      the frames being released then it must still set the more-data bit in
+ *      the frame. If the @more_data parameter is %true, then of course the
+ *      more-data bit must always be set.
+ *      The @tids parameter tells the driver which TIDs to release frames
+ *      from, for PS-poll it will always have only a single bit set.
+ *      In the case this is used for uAPSD, the @num_frames parameter may be
+ *      bigger than one, but the driver may send fewer frames (it must send
+ *      at least one, however). In this case it is also responsible for
+ *      setting the EOSP flag in the QoS header of the frames.
+ *      This callback must be atomic.
  */
 struct ieee80211_ops {
         void (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb);
@@ -2045,6 +2070,12 @@ struct ieee80211_ops {
                                 const struct cfg80211_bitrate_mask *mask);
         void (*rssi_callback)(struct ieee80211_hw *hw,
                               enum ieee80211_rssi_event rssi_event);
+
+        void (*release_buffered_frames)(struct ieee80211_hw *hw,
+                                        struct ieee80211_sta *sta,
+                                        u16 tids, int num_frames,
+                                        enum ieee80211_frame_release_type reason,
+                                        bool more_data);
 };
 
 /**