drivers: eth: e1000: Add Ethernet statistics support

Support e1000 driver Ethernet statistics if relevant config
options are enabled.

Signed-off-by: Jukka Rissanen <[email protected]>

Author: jukkar

drivers/ethernet/eth_e1000.c

@@ -270,10 +270,22 @@ static void e1000_iface_init(struct net_if *iface)
 	LOG_DBG("done");
 }
 
+#if defined(CONFIG_NET_STATISTICS_ETHERNET)
+static struct net_stats_eth *get_stats(const struct device *dev)
+{
+	struct e1000_dev *ctx = dev->data;
+
+	return &ctx->stats;
+}
+#endif
+
 static const struct ethernet_api e1000_api = {
 	.iface_api.init		= e1000_iface_init,
 #if defined(CONFIG_ETH_E1000_PTP_CLOCK)
 	.get_ptp_clock		= e1000_get_ptp_clock,
+#endif
+#if defined(CONFIG_NET_STATISTICS_ETHERNET)
+	.get_stats = get_stats,
 #endif
 	.get_capabilities	= e1000_caps,
 	.send			= e1000_send,

drivers/ethernet/eth_e1000_priv.h

@@ -94,6 +94,9 @@ struct e1000_dev {
 	const struct device *ptp_clock;
 	double clk_ratio;
 #endif
+#if defined(CONFIG_NET_STATISTICS_ETHERNET)
+	struct net_stats_eth stats;
+#endif
 };
 
 struct e1000_config {