ravb: Add support to retrieve stats for GbEthernet

Add support for retrieving stats information for GbEthernet.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/renesas/ravb_main.c

@@ -1493,6 +1493,24 @@ static void ravb_set_msglevel(struct net_device *ndev, u32 value)
 	priv->msg_enable = value;
 }
 
+static const char ravb_gstrings_stats_gbeth[][ETH_GSTRING_LEN] = {
+	"rx_queue_0_current",
+	"tx_queue_0_current",
+	"rx_queue_0_dirty",
+	"tx_queue_0_dirty",
+	"rx_queue_0_packets",
+	"tx_queue_0_packets",
+	"rx_queue_0_bytes",
+	"tx_queue_0_bytes",
+	"rx_queue_0_mcast_packets",
+	"rx_queue_0_errors",
+	"rx_queue_0_crc_errors",
+	"rx_queue_0_frame_errors",
+	"rx_queue_0_length_errors",
+	"rx_queue_0_csum_offload_errors",
+	"rx_queue_0_over_errors",
+};
+
 static const char ravb_gstrings_stats[][ETH_GSTRING_LEN] = {
 	"rx_queue_0_current",
 	"tx_queue_0_current",
@@ -2434,6 +2452,9 @@ static const struct ravb_hw_info gbeth_hw_info = {
 	.set_feature = ravb_set_features_gbeth,
 	.dmac_init = ravb_dmac_init_gbeth,
 	.emac_init = ravb_emac_init_gbeth,
+	.gstrings_stats = ravb_gstrings_stats_gbeth,
+	.gstrings_size = sizeof(ravb_gstrings_stats_gbeth),
+	.stats_len = ARRAY_SIZE(ravb_gstrings_stats_gbeth),
 	.max_rx_len = ALIGN(GBETH_RX_BUFF_MAX, RAVB_ALIGN),
 	.tsrq = TCCR_TSRQ0,
 	.rx_max_buf_size = SZ_8K,