This is a note to let you know that I've just added the patch titled
wifi: mac80211: export ieee80211_purge_tx_queue() for drivers
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-mac80211-export-ieee80211_purge_tx_queue-for-dr.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c54d8898c482819efdeb76d19dd4b804a41a01e3
Author: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
Date: Thu Aug 22 09:42:54 2024 +0800
wifi: mac80211: export ieee80211_purge_tx_queue() for drivers
[ Upstream commit 53bc1b73b67836ac9867f93dee7a443986b4a94f ]
Drivers need to purge TX SKB when stopping. Using skb_queue_purge() can't
report TX status to mac80211, causing ieee80211_free_ack_frame() warns
"Have pending ack frames!". Export ieee80211_purge_tx_queue() for drivers
to not have to reimplement it.
Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
Link: https://patch.msgid.link/20240822014255.10211-1-pkshih@xxxxxxxxxxx
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Stable-dep-of: 3e5e4a801aaf ("wifi: rtw88: use ieee80211_purge_tx_queue() to purge TX skb")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 47ade676565d..901fe3ac139e 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -3039,6 +3039,19 @@ ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw,
*/
void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb);
+/**
+ * ieee80211_purge_tx_queue - purge TX skb queue
+ * @hw: the hardware
+ * @skbs: the skbs
+ *
+ * Free a set of transmit skbs. Use this function when device is going to stop
+ * but some transmit skbs without TX status are still queued.
+ * This function does not take the list lock and the caller must hold the
+ * relevant locks to use it.
+ */
+void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
+ struct sk_buff_head *skbs);
+
/**
* DOC: Hardware crypto acceleration
*
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index daea061d0fc1..04c876d78d3b 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -2057,8 +2057,6 @@ void __ieee80211_subif_start_xmit(struct sk_buff *skb,
u32 info_flags,
u32 ctrl_flags,
u64 *cookie);
-void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
- struct sk_buff_head *skbs);
struct sk_buff *
ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, u32 info_flags);
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 44d83da60aee..9676ed15efec 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -1270,3 +1270,4 @@ void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
while ((skb = __skb_dequeue(skbs)))
ieee80211_free_txskb(hw, skb);
}
+EXPORT_SYMBOL(ieee80211_purge_tx_queue);
