This is a note to let you know that I've just added the patch titled
wifi: ath11k: Cleanup mac80211 references on failure during tx_complete
to the 6.4-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-ath11k-cleanup-mac80211-references-on-failure-during-tx_complete.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 29d15589f084d71a4ea8c544039c5839db0236e2 Mon Sep 17 00:00:00 2001
From: Sven Eckelmann <sven@xxxxxxxxxxxxx>
Date: Tue, 22 Aug 2023 16:42:24 +0300
Subject: wifi: ath11k: Cleanup mac80211 references on failure during tx_complete
From: Sven Eckelmann <sven@xxxxxxxxxxxxx>
commit 29d15589f084d71a4ea8c544039c5839db0236e2 upstream.
When a function is using functions from mac80211 to free an skb then it
should do it consistently and not switch to the generic dev_kfree_skb_any
(or similar functions). Otherwise (like in the error handlers), mac80211
will will not be aware of the freed skb and thus not clean up related
information in its internal data structures.
Not doing so lead in the past to filled up structure which then prevented
new clients to connect.
Fixes: d5c65159f289 ("ath11k: driver for Qualcomm IEEE 802.11ax devices")
Fixes: 6257c702264c ("wifi: ath11k: fix tx status reporting in encap offload mode")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Sven Eckelmann <sven@xxxxxxxxxxxxx>
Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230802-ath11k-ack_status_leak-v2-2-c0af729d6229@xxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath11k/dp_tx.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/net/wireless/ath/ath11k/dp_tx.c
+++ b/drivers/net/wireless/ath/ath11k/dp_tx.c
@@ -344,7 +344,7 @@ ath11k_dp_tx_htt_tx_complete_buf(struct
dma_unmap_single(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
if (!skb_cb->vif) {
- dev_kfree_skb_any(msdu);
+ ieee80211_free_txskb(ar->hw, msdu);
return;
}
@@ -566,12 +566,12 @@ static void ath11k_dp_tx_complete_msdu(s
dma_unmap_single(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
if (unlikely(!rcu_access_pointer(ab->pdevs_active[ar->pdev_idx]))) {
- dev_kfree_skb_any(msdu);
+ ieee80211_free_txskb(ar->hw, msdu);
return;
}
if (unlikely(!skb_cb->vif)) {
- dev_kfree_skb_any(msdu);
+ ieee80211_free_txskb(ar->hw, msdu);
return;
}
Patches currently in stable-queue which might be from sven@xxxxxxxxxxxxx are
queue-6.4/wifi-ath11k-cleanup-mac80211-references-on-failure-during-tx_complete.patch
queue-6.4/wifi-ath11k-don-t-drop-tx_status-when-peer-cannot-be-found.patch
