When a driver wants to buffer some frames internally without feeding them
back to mac80211, this allows it to still wake up the station
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
---
include/net/mac80211.h | 14 ++++++++++++++
net/mac80211/sta_info.c | 8 ++++++++
2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 8fcd169..9a0babe 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -2194,6 +2194,20 @@ static inline int ieee80211_sta_ps_transition_ni(struct ieee80211_sta *sta,
#define IEEE80211_TX_STATUS_HEADROOM 13
/**
+ * ieee80211_sta_set_tim - set the TIM bit for a sleeping station
+ *
+ * If a driver buffers frames for a powersave station instead of passing
+ * them back to mac80211 for retransmission, the station needs to be told
+ * to wake up using the TIM bitmap in the beacon.
+ *
+ * This function sets the station's TIM bit - it will be cleared automatically
+ * either when the station wakes up (and mac80211 has flushed out its
+ * buffered frames), or if all remaining buffered frames in mac80211 have
+ * timed out.
+ */
+void ieee80211_sta_set_tim(struct ieee80211_sta *sta);
+
+/**
* ieee80211_tx_status - transmit status callback
*
* Call this function for all transmitted frames after they have been
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 5a11078..3458091 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -991,3 +991,11 @@ void ieee80211_sta_block_awake(struct ieee80211_hw *hw,
ieee80211_queue_work(hw, &sta->drv_unblock_wk);
}
EXPORT_SYMBOL(ieee80211_sta_block_awake);
+
+void ieee80211_sta_set_tim(struct ieee80211_sta *pubsta)
+{
+ struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
+
+ sta_info_set_tim_bit(sta);
+}
+EXPORT_SYMBOL(ieee80211_sta_set_tim);
--
1.7.3.2
--
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