amd-xgbe: Add per queue Tx and Rx statistics

Add per queue Tx and Rx packet and byte counts.
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

@@ -1609,6 +1609,7 @@ static void xgbe_dev_xmit(struct xgbe_channel *channel)
 	struct xgbe_ring_data *rdata;
 	struct xgbe_ring_desc *rdesc;
 	struct xgbe_packet_data *packet = &ring->packet_data;
+	unsigned int tx_packets, tx_bytes;
 	unsigned int csum, tso, vlan;
 	unsigned int tso_context, vlan_context;
 	unsigned int tx_set_ic;
@@ -1618,6 +1619,9 @@ static void xgbe_dev_xmit(struct xgbe_channel *channel)
 
 	DBGPR("-->xgbe_dev_xmit\n");
 
+	tx_packets = packet->tx_packets;
+	tx_bytes = packet->tx_bytes;
+
 	csum = XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
 			      CSUM_ENABLE);
 	tso = XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
@@ -1645,13 +1649,12 @@ static void xgbe_dev_xmit(struct xgbe_channel *channel)
 	 *     - Addition of Tx frame count to the frame count since the
 	 *       last interrupt was set does not exceed the frame count setting
 	 */
-	ring->coalesce_count += packet->tx_packets;
+	ring->coalesce_count += tx_packets;
 	if (!pdata->tx_frames)
 		tx_set_ic = 0;
-	else if (packet->tx_packets > pdata->tx_frames)
+	else if (tx_packets > pdata->tx_frames)
 		tx_set_ic = 1;
-	else if ((ring->coalesce_count % pdata->tx_frames) <
-		 packet->tx_packets)
+	else if ((ring->coalesce_count % pdata->tx_frames) < tx_packets)
 		tx_set_ic = 1;
 	else
 		tx_set_ic = 0;
@@ -1741,7 +1744,7 @@ static void xgbe_dev_xmit(struct xgbe_channel *channel)
 		XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, TCPHDRLEN,
 				  packet->tcp_header_len / 4);
 
-		pdata->ext_stats.tx_tso_packets += packet->tx_packets;
+		pdata->ext_stats.tx_tso_packets += tx_packets;
 	} else {
 		/* Enable CRC and Pad Insertion */
 		XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, CPC, 0);
@@ -1789,8 +1792,11 @@ static void xgbe_dev_xmit(struct xgbe_channel *channel)
 		XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, IC, 1);
 
 	/* Save the Tx info to report back during cleanup */
-	rdata->tx.packets = packet->tx_packets;
-	rdata->tx.bytes = packet->tx_bytes;
+	rdata->tx.packets = tx_packets;
+	rdata->tx.bytes = tx_bytes;
+
+	pdata->ext_stats.txq_packets[channel->queue_index] += tx_packets;
+	pdata->ext_stats.txq_bytes[channel->queue_index] += tx_bytes;
 
 	/* In case the Tx DMA engine is running, make sure everything
 	 * is written to the descriptor(s) before setting the OWN bit
@@ -1944,6 +1950,9 @@ static int xgbe_dev_read(struct xgbe_channel *channel)
 				       FRAME, 1);
 	}
 
+	pdata->ext_stats.rxq_packets[channel->queue_index]++;
+	pdata->ext_stats.rxq_bytes[channel->queue_index] += rdata->rx.len;
+
 	DBGPR("<--xgbe_dev_read: %s - descriptor=%u (cur=%d)\n", channel->name,
 	      ring->cur & (ring->rdesc_count - 1), ring->cur);
 

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

@@ -186,6 +186,7 @@ static const struct xgbe_stats xgbe_gstring_stats[] = {
 
 static void xgbe_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
 {
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
 	int i;
 
 	switch (stringset) {
@@ -195,6 +196,18 @@ static void xgbe_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
 			       ETH_GSTRING_LEN);
 			data += ETH_GSTRING_LEN;
 		}
+		for (i = 0; i < pdata->tx_ring_count; i++) {
+			sprintf(data, "txq_%u_packets", i);
+			data += ETH_GSTRING_LEN;
+			sprintf(data, "txq_%u_bytes", i);
+			data += ETH_GSTRING_LEN;
+		}
+		for (i = 0; i < pdata->rx_ring_count; i++) {
+			sprintf(data, "rxq_%u_packets", i);
+			data += ETH_GSTRING_LEN;
+			sprintf(data, "rxq_%u_bytes", i);
+			data += ETH_GSTRING_LEN;
+		}
 		break;
 	}
 }
@@ -211,15 +224,26 @@ static void xgbe_get_ethtool_stats(struct net_device *netdev,
 		stat = (u8 *)pdata + xgbe_gstring_stats[i].stat_offset;
 		*data++ = *(u64 *)stat;
 	}
+	for (i = 0; i < pdata->tx_ring_count; i++) {
+		*data++ = pdata->ext_stats.txq_packets[i];
+		*data++ = pdata->ext_stats.txq_bytes[i];
+	}
+	for (i = 0; i < pdata->rx_ring_count; i++) {
+		*data++ = pdata->ext_stats.rxq_packets[i];
+		*data++ = pdata->ext_stats.rxq_bytes[i];
+	}
 }
 
 static int xgbe_get_sset_count(struct net_device *netdev, int stringset)
 {
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
 	int ret;
 
 	switch (stringset) {
 	case ETH_SS_STATS:
-		ret = XGBE_STATS_COUNT;
+		ret = XGBE_STATS_COUNT +
+		      (pdata->tx_ring_count * 2) +
+		      (pdata->rx_ring_count * 2);
 		break;
 
 	default:

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

@@ -668,6 +668,11 @@ struct xgbe_ext_stats {
 	u64 tx_tso_packets;
 	u64 rx_split_header_packets;
 	u64 rx_buffer_unavailable;
+
+	u64 txq_packets[XGBE_MAX_DMA_CHANNELS];
+	u64 txq_bytes[XGBE_MAX_DMA_CHANNELS];
+	u64 rxq_packets[XGBE_MAX_DMA_CHANNELS];
+	u64 rxq_bytes[XGBE_MAX_DMA_CHANNELS];
 };
 
 struct xgbe_hw_if {