amd-xgbe: Add additional ethtool statistics

Add some additional statistics for tracking VXLAN packets and checksum
errors.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/amd/xgbe/xgbe-dev.c

@@ -1805,10 +1805,13 @@ static void xgbe_dev_xmit(struct xgbe_channel *channel)
 				  packet->length);
 	}
 
-	if (vxlan)
+	if (vxlan) {
 		XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, VNP,
 				  TX_NORMAL_DESC3_VXLAN_PACKET);
 
+		pdata->ext_stats.tx_vxlan_packets += packet->tx_packets;
+	}
+
 	for (i = cur_index - start_index + 1; i < packet->rdesc_count; i++) {
 		cur_index++;
 		rdata = XGBE_GET_DESC_DATA(ring, cur_index);
@@ -1981,6 +1984,7 @@ static int xgbe_dev_read(struct xgbe_channel *channel)
 	if (XGMAC_GET_BITS_LE(rdesc->desc2, RX_NORMAL_DESC2, TNP)) {
 		XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
 			       TNP, 1);
+		pdata->ext_stats.rx_vxlan_packets++;
 
 		l34t = XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, L34T);
 		switch (l34t) {
@@ -2018,11 +2022,13 @@ static int xgbe_dev_read(struct xgbe_channel *channel)
 				       CSUM_DONE, 0);
 			XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
 				       TNPCSUM_DONE, 0);
+			pdata->ext_stats.rx_csum_errors++;
 		} else if (tnp && ((etlt == 0x09) || (etlt == 0x0a))) {
 			XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
 				       CSUM_DONE, 0);
 			XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
 				       TNPCSUM_DONE, 0);
+			pdata->ext_stats.rx_vxlan_csum_errors++;
 		} else {
 			XGMAC_SET_BITS(packet->errors, RX_PACKET_ERRORS,
 				       FRAME, 1);

drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c

@@ -146,6 +146,7 @@ static const struct xgbe_stats xgbe_gstring_stats[] = {
 	XGMAC_MMC_STAT("tx_broadcast_packets", txbroadcastframes_gb),
 	XGMAC_MMC_STAT("tx_multicast_packets", txmulticastframes_gb),
 	XGMAC_MMC_STAT("tx_vlan_packets", txvlanframes_g),
+	XGMAC_EXT_STAT("tx_vxlan_packets", tx_vxlan_packets),
 	XGMAC_EXT_STAT("tx_tso_packets", tx_tso_packets),
 	XGMAC_MMC_STAT("tx_64_byte_packets", tx64octets_gb),
 	XGMAC_MMC_STAT("tx_65_to_127_byte_packets", tx65to127octets_gb),
@@ -162,6 +163,7 @@ static const struct xgbe_stats xgbe_gstring_stats[] = {
 	XGMAC_MMC_STAT("rx_broadcast_packets", rxbroadcastframes_g),
 	XGMAC_MMC_STAT("rx_multicast_packets", rxmulticastframes_g),
 	XGMAC_MMC_STAT("rx_vlan_packets", rxvlanframes_gb),
+	XGMAC_EXT_STAT("rx_vxlan_packets", rx_vxlan_packets),
 	XGMAC_MMC_STAT("rx_64_byte_packets", rx64octets_gb),
 	XGMAC_MMC_STAT("rx_65_to_127_byte_packets", rx65to127octets_gb),
 	XGMAC_MMC_STAT("rx_128_to_255_byte_packets", rx128to255octets_gb),
@@ -177,6 +179,8 @@ static const struct xgbe_stats xgbe_gstring_stats[] = {
 	XGMAC_MMC_STAT("rx_out_of_range_errors", rxoutofrangetype),
 	XGMAC_MMC_STAT("rx_fifo_overflow_errors", rxfifooverflow),
 	XGMAC_MMC_STAT("rx_watchdog_errors", rxwatchdogerror),
+	XGMAC_EXT_STAT("rx_csum_errors", rx_csum_errors),
+	XGMAC_EXT_STAT("rx_vxlan_csum_errors", rx_vxlan_csum_errors),
 	XGMAC_MMC_STAT("rx_pause_frames", rxpauseframes),
 	XGMAC_EXT_STAT("rx_split_header_packets", rx_split_header_packets),
 	XGMAC_EXT_STAT("rx_buffer_unavailable", rx_buffer_unavailable),

drivers/net/ethernet/amd/xgbe/xgbe.h

@@ -715,6 +715,11 @@ struct xgbe_ext_stats {
 	u64 txq_bytes[XGBE_MAX_DMA_CHANNELS];
 	u64 rxq_packets[XGBE_MAX_DMA_CHANNELS];
 	u64 rxq_bytes[XGBE_MAX_DMA_CHANNELS];
+
+	u64 tx_vxlan_packets;
+	u64 rx_vxlan_packets;
+	u64 rx_csum_errors;
+	u64 rx_vxlan_csum_errors;
 };
 
 struct xgbe_hw_if {