1 files changed, 36 insertions, 7 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 3541c48a97c..e6521261a58 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -3412,6 +3412,39 @@ void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
 void ieee80211_report_low_ack(struct ieee80211_sta *sta, u32 num_packets);
 
 /**
+ * struct ieee80211_mutable_offsets - mutable beacon offsets
+ * @tim_offset: position of TIM element
+ * @tim_length: size of TIM element
+ */
+struct ieee80211_mutable_offsets {
+	u16 tim_offset;
+	u16 tim_length;
+};
+
+/**
+ * ieee80211_beacon_get_template - beacon template generation function
+ * @hw: pointer obtained from ieee80211_alloc_hw().
+ * @vif: &struct ieee80211_vif pointer from the add_interface callback.
+ * @offs: &struct ieee80211_mutable_offsets pointer to struct that will
+ *	receive the offsets that may be updated by the driver.
+ *
+ * If the driver implements beaconing modes, it must use this function to
+ * obtain the beacon template.
+ *
+ * This function should be used if the beacon frames are generated by the
+ * device, and then the driver must use the returned beacon as the template
+ * The driver is responsible to update the DTIM count.
+ *
+ * The driver is responsible for freeing the returned skb.
+ *
+ * Return: The beacon template. %NULL on error.
+ */
+struct sk_buff *
+ieee80211_beacon_get_template(struct ieee80211_hw *hw,
+			      struct ieee80211_vif *vif,
+			      struct ieee80211_mutable_offsets *offs);
+
+/**
  * ieee80211_beacon_get_tim - beacon generation function
  * @hw: pointer obtained from ieee80211_alloc_hw().
  * @vif: &struct ieee80211_vif pointer from the add_interface callback.
@@ -3422,16 +3455,12 @@ void ieee80211_report_low_ack(struct ieee80211_sta *sta, u32 num_packets);
  *	Set to 0 if invalid (in non-AP modes).
  *
  * If the driver implements beaconing modes, it must use this function to
- * obtain the beacon frame/template.
+ * obtain the beacon frame.
  *
  * If the beacon frames are generated by the host system (i.e., not in
  * hardware/firmware), the driver uses this function to get each beacon
- * frame from mac80211 -- it is responsible for calling this function
- * before the beacon is needed (e.g. based on hardware interrupt).
- *
- * If the beacon frames are generated by the device, then the driver
- * must use the returned beacon as the template and change the TIM IE
- * according to the current DTIM parameters/TIM bitmap.
+ * frame from mac80211 -- it is responsible for calling this function exactly
+ * once before the beacon is needed (e.g. based on hardware interrupt).
  *
  * The driver is responsible for freeing the returned skb.
  *