This is a note to let you know that I've just added the patch titled
net: netdev_queue: netdev_txq_completed_mb(): fix wake condition
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:
net-netdev_queue-netdev_txq_completed_mb-fix-wake-co.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 9a463af849ced9f31bc5566d920869951b7c4689
Author: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Date: Fri Jan 12 17:13:14 2024 +0100
net: netdev_queue: netdev_txq_completed_mb(): fix wake condition
[ Upstream commit 894d7508316e7ad722df597d68b4b1797a9eee11 ]
netif_txq_try_stop() uses "get_desc >= start_thrs" as the check for
the call to netif_tx_start_queue().
Use ">=" i netdev_txq_completed_mb(), too.
Fixes: c91c46de6bbc ("net: provide macros for commonly copied lockless queue stop/wake code")
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Acked-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/net/netdev_queues.h b/include/net/netdev_queues.h
index d68b0a483431..8b8ed4e13d74 100644
--- a/include/net/netdev_queues.h
+++ b/include/net/netdev_queues.h
@@ -128,7 +128,7 @@ netdev_txq_completed_mb(struct netdev_queue *dev_queue,
netdev_txq_completed_mb(txq, pkts, bytes); \
\
_res = -1; \
- if (pkts && likely(get_desc > start_thrs)) { \
+ if (pkts && likely(get_desc >= start_thrs)) { \
_res = 1; \
if (unlikely(netif_tx_queue_stopped(txq)) && \
!(down_cond)) { \
