linux-kernel - [PATCH v2 net-next 1/3] net: enetc: change the statistics of ring to unsigned long type

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Message-Id: <20250624101548.2669522-2-wei.fang@nxp.com>
Date: Tue, 24 Jun 2025 18:15:46 +0800
From: Wei Fang <wei.fang@....com>
To: claudiu.manoil@....com,
	vladimir.oltean@....com,
	xiaoning.wang@....com,
	andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	horms@...nel.org
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	imx@...ts.linux.dev
Subject: [PATCH v2 net-next 1/3] net: enetc: change the statistics of ring to unsigned long type

The statistics of the ring are all unsigned int type, so the statistics
will overflow quickly under heavy traffic. In addition, the statistics
of struct net_device_stats are obtained from struct enetc_ring_stats,
but the statistics of net_device_stats are unsigned long type. So it is
better to keep the statistics types consistent in these two structures.
Considering these two factors, and the fact that both LS1028A and i.MX95
are arm64 architecture, the statistics of enetc_ring_stats are changed
to unsigned long type. Note that unsigned int and unsigned long are the
same thing on some systems, and on such systems there is no overflow
advantage of one over the other.

Signed-off-by: Wei Fang <wei.fang@....com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@....com>
---
 drivers/net/ethernet/freescale/enetc/enetc.h | 22 ++++++++++----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/freescale/enetc/enetc.h b/drivers/net/ethernet/freescale/enetc/enetc.h
index 872d2cbd088b..62e8ee4d2f04 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.h
+++ b/drivers/net/ethernet/freescale/enetc/enetc.h
@@ -96,17 +96,17 @@ struct enetc_rx_swbd {
 #define ENETC_TXBDS_MAX_NEEDED(x)	ENETC_TXBDS_NEEDED((x) + 1)
 
 struct enetc_ring_stats {
-	unsigned int packets;
-	unsigned int bytes;
-	unsigned int rx_alloc_errs;
-	unsigned int xdp_drops;
-	unsigned int xdp_tx;
-	unsigned int xdp_tx_drops;
-	unsigned int xdp_redirect;
-	unsigned int xdp_redirect_failures;
-	unsigned int recycles;
-	unsigned int recycle_failures;
-	unsigned int win_drop;
+	unsigned long packets;
+	unsigned long bytes;
+	unsigned long rx_alloc_errs;
+	unsigned long xdp_drops;
+	unsigned long xdp_tx;
+	unsigned long xdp_tx_drops;
+	unsigned long xdp_redirect;
+	unsigned long xdp_redirect_failures;
+	unsigned long recycles;
+	unsigned long recycle_failures;
+	unsigned long win_drop;
 };
 
 struct enetc_xdp_data {
-- 
2.34.1