* [PATCH AUTOSEL 6.9 02/22] net: mac802154: Fix racy device stats updates by DEV_STATS_INC() and DEV_STATS_ADD()
[not found] <20240716142519.2712487-1-sashal@kernel.org>
@ 2024-07-16 14:24 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2024-07-16 14:24 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Yunshui Jiang, Stefan Schmidt, Sasha Levin, alex.aring,
miquel.raynal, davem, edumazet, kuba, pabeni, linux-wpan, netdev
From: Yunshui Jiang <jiangyunshui@kylinos.cn>
[ Upstream commit b8ec0dc3845f6c9089573cb5c2c4b05f7fc10728 ]
mac802154 devices update their dev->stats fields locklessly. Therefore
these counters should be updated atomically. Adopt SMP safe DEV_STATS_INC()
and DEV_STATS_ADD() to achieve this.
Signed-off-by: Yunshui Jiang <jiangyunshui@kylinos.cn>
Message-ID: <20240531080739.2608969-1-jiangyunshui@kylinos.cn>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac802154/tx.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/net/mac802154/tx.c b/net/mac802154/tx.c
index 2a6f1ed763c9b..6fbed5bb5c3e0 100644
--- a/net/mac802154/tx.c
+++ b/net/mac802154/tx.c
@@ -34,8 +34,8 @@ void ieee802154_xmit_sync_worker(struct work_struct *work)
if (res)
goto err_tx;
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += skb->len;
+ DEV_STATS_INC(dev, tx_packets);
+ DEV_STATS_ADD(dev, tx_bytes, skb->len);
ieee802154_xmit_complete(&local->hw, skb, false);
@@ -90,8 +90,8 @@ ieee802154_tx(struct ieee802154_local *local, struct sk_buff *skb)
if (ret)
goto err_wake_netif_queue;
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += len;
+ DEV_STATS_INC(dev, tx_packets);
+ DEV_STATS_ADD(dev, tx_bytes, len);
} else {
local->tx_skb = skb;
queue_work(local->workqueue, &local->sync_tx_work);
--
2.43.0
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