On Tue, 12 Oct 2021 14:35:54 +0200 Alvin Šipraga wrote: > + { 0, 4, 2, "dot3StatsFCSErrors" }, > + { 0, 6, 2, "dot3StatsSymbolErrors" }, > + { 0, 8, 2, "dot3InPauseFrames" }, > + { 0, 10, 2, "dot3ControlInUnknownOpcodes" }, ... You must expose counters via existing standard APIs. You should implement these ethtool ops: void (*get_eth_phy_stats)(struct net_device *dev, struct ethtool_eth_phy_stats *phy_stats); void (*get_eth_mac_stats)(struct net_device *dev, struct ethtool_eth_mac_stats *mac_stats); void (*get_eth_ctrl_stats)(struct net_device *dev, struct ethtool_eth_ctrl_stats *ctrl_stats); void (*get_rmon_stats)(struct net_device *dev, struct ethtool_rmon_stats *rmon_stats, const struct ethtool_rmon_hist_range **ranges); > +static int rtl8365mb_setup(struct dsa_switch *ds) > +{ > + struct realtek_smi *smi = ds->priv; > + struct rtl8365mb *mb; > + int ret; > + int i; > + > + mb = smi->chip_data; drivers/net/dsa/rtl8365mb.c:1428:20: warning: variable ‘mb’ set but not used [-Wunused-but-set-variable] 1428 | struct rtl8365mb *mb; | ^~