6.1-stable review patch. If anyone has any objections, please let me know.
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From: Ping-Ke Shih pkshih@realtek.com
commit 53bc1b73b67836ac9867f93dee7a443986b4a94f upstream.
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@realtek.com Link: https://patch.msgid.link/20240822014255.10211-1-pkshih@realtek.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/net/mac80211.h | 13 +++++++++++++ net/mac80211/ieee80211_i.h | 2 -- net/mac80211/status.c | 1 + 3 files changed, 14 insertions(+), 2 deletions(-)
--- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -2957,6 +2957,19 @@ ieee80211_get_alt_retry_rate(const struc 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 * * mac80211 is capable of taking advantage of many hardware --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1984,8 +1984,6 @@ void __ieee80211_subif_start_xmit(struct 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); --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -1294,3 +1294,4 @@ void ieee80211_purge_tx_queue(struct iee while ((skb = __skb_dequeue(skbs))) ieee80211_free_txskb(hw, skb); } +EXPORT_SYMBOL(ieee80211_purge_tx_queue);