The tx_bytes should consider the actual size of the Ethernet frames
without the SPI encapsulation. But we still need to take care of
Ethernet padding.

Fixes: 2f207cbf0dd4 ("net: vertexcom: Add MSE102x SPI support")
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
---
 drivers/net/ethernet/vertexcom/mse102x.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/vertexcom/mse102x.c b/drivers/net/ethernet/vertexcom/mse102x.c
index 2c37957478fb..1fffae6596de 100644
--- a/drivers/net/ethernet/vertexcom/mse102x.c
+++ b/drivers/net/ethernet/vertexcom/mse102x.c
@@ -443,7 +443,8 @@ static void mse102x_tx_work(struct work_struct *work)
 		if (ret) {
 			mse->ndev->stats.tx_dropped++;
 		} else {
-			mse->ndev->stats.tx_bytes += txb->len;
+			mse->ndev->stats.tx_bytes += max_t(unsigned int,
+							   txb->len, ETH_ZLEN);
 			mse->ndev->stats.tx_packets++;
 		}

--
2.34.1

On Tue,  5 Nov 2024 17:35:45 +0100 Stefan Wahren wrote:
> +			mse->ndev->stats.tx_bytes += max_t(unsigned int,
> +							   txb->len, ETH_ZLEN);

Is this enough? skb->len will include 2 bytes added by
mse102x_push_header() and 2 added by mse102x_put_footer()
(unless we went to skb_copy_expand(), which is very likely)

May be easier to save the skb->len before calling mse102x_tx_pkt_spi()