4.9-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit 8682250b3c1b75a45feb7452bc413d004cfe3778 ]
If a frame is dropped for any reason, mac80211 wouldn't report the TX
status back to user space.
As the user space may rely on the TX_STATUS to kick its state
machines, resends etc, it's better to just report this frame as not
acked instead.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@xxxxxxxxx>
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/mac80211/status.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 72fe9bc7a1f9..7892bac21eac 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -472,11 +472,6 @@ static void ieee80211_report_ack_skb(struct ieee80211_local *local,
if (!skb)
return;
- if (dropped) {
- dev_kfree_skb_any(skb);
- return;
- }
-
if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) {
u64 cookie = IEEE80211_SKB_CB(skb)->ack.cookie;
struct ieee80211_sub_if_data *sdata;
@@ -497,6 +492,8 @@ static void ieee80211_report_ack_skb(struct ieee80211_local *local,
}
rcu_read_unlock();
+ dev_kfree_skb_any(skb);
+ } else if (dropped) {
dev_kfree_skb_any(skb);
} else {
/* consumes skb */
--
2.17.1
