This is a note to let you know that I've just added the patch titled
wifi: b43: Stop correct queue in DMA worker when QoS is disabled
to the 4.19-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-b43-stop-correct-queue-in-dma-worker-when-qos-i.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8881c6c981fde8dd50d9ec856e90436c34a66bcd
Author: Rahul Rameshbabu <sergeantsagara@xxxxxxxxxxxxxx>
Date: Sun Dec 31 05:03:51 2023 +0000
wifi: b43: Stop correct queue in DMA worker when QoS is disabled
[ Upstream commit 581c8967d66c4961076dbbee356834e9c6777184 ]
When QoS is disabled, the queue priority value will not map to the correct
ieee80211 queue since there is only one queue. Stop queue 0 when QoS is
disabled to prevent trying to stop a non-existent queue and failing to stop
the actual queue instantiated.
Fixes: bad691946966 ("b43: avoid packet losses in the dma worker code.")
Signed-off-by: Rahul Rameshbabu <sergeantsagara@xxxxxxxxxxxxxx>
Reviewed-by: Julian Calaby <julian.calaby@xxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://msgid.link/20231231050300.122806-4-sergeantsagara@xxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c
index 9a3563de60a77..8d50ebdbeb1e5 100644
--- a/drivers/net/wireless/broadcom/b43/main.c
+++ b/drivers/net/wireless/broadcom/b43/main.c
@@ -3626,7 +3626,7 @@ static void b43_tx_work(struct work_struct *work)
err = b43_dma_tx(dev, skb);
if (err == -ENOSPC) {
wl->tx_queue_stopped[queue_num] = true;
- ieee80211_stop_queue(wl->hw, queue_num);
+ b43_stop_queue(dev, queue_num);
skb_queue_head(&wl->tx_queue[queue_num], skb);
break;
}
@@ -3650,6 +3650,7 @@ static void b43_op_tx(struct ieee80211_hw *hw,
struct sk_buff *skb)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
+ u16 skb_queue_mapping;
if (unlikely(skb->len < 2 + 2 + 6)) {
/* Too short, this can't be a valid frame. */
@@ -3658,12 +3659,12 @@ static void b43_op_tx(struct ieee80211_hw *hw,
}
B43_WARN_ON(skb_shinfo(skb)->nr_frags);
- skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb);
- if (!wl->tx_queue_stopped[skb->queue_mapping]) {
+ skb_queue_mapping = skb_get_queue_mapping(skb);
+ skb_queue_tail(&wl->tx_queue[skb_queue_mapping], skb);
+ if (!wl->tx_queue_stopped[skb_queue_mapping])
ieee80211_queue_work(wl->hw, &wl->tx_work);
- } else {
- ieee80211_stop_queue(wl->hw, skb->queue_mapping);
- }
+ else
+ b43_stop_queue(wl->current_dev, skb_queue_mapping);
}
static void b43_qos_params_upload(struct b43_wldev *dev,
