From: Steen Hegelund steen.hegelund@microchip.com
[ Upstream commit ed14fc7a79ab43e9f2cb1fa9c1733fdc133bba30 ]
This problem was found with Sparx5 when the tcpdump tool requests the do_get_stats64 (sparx5_get_stats64) statistic.
The portstats pointer was incorrectly incremented when fetching priority based statistics.
Fixes: af4b11022e2d (net: sparx5: add ethtool configuration and statistics support) Signed-off-by: Steen Hegelund steen.hegelund@microchip.com Link: https://lore.kernel.org/r/20220203102900.528987-1-steen.hegelund@microchip.c... Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/microchip/sparx5/sparx5_ethtool.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_ethtool.c b/drivers/net/ethernet/microchip/sparx5/sparx5_ethtool.c index 59783fc46a7b9..10b866e9f7266 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_ethtool.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_ethtool.c @@ -1103,7 +1103,7 @@ void sparx5_get_stats64(struct net_device *ndev, stats->tx_carrier_errors = portstats[spx5_stats_tx_csense_cnt]; stats->tx_window_errors = portstats[spx5_stats_tx_late_coll_cnt]; stats->rx_dropped = portstats[spx5_stats_ana_ac_port_stat_lsb_cnt]; - for (idx = 0; idx < 2 * SPX5_PRIOS; ++idx, ++stats) + for (idx = 0; idx < 2 * SPX5_PRIOS; ++idx) stats->rx_dropped += portstats[spx5_stats_green_p0_rx_port_drop + idx]; stats->tx_dropped = portstats[spx5_stats_tx_local_drop];