From: Natalie Samsonov <nsamsono@marvell.com>
Date: Wed, 3 Oct 2018 07:22:16 +0000 (+0200)
Subject: net/mvneta: support statistics reset
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=3378383dceab;p=dpdk.git

net/mvneta: support statistics reset

Add support for resetting of driver statistics.

Signed-off-by: Natalie Samsonov <nsamsono@marvell.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
---

diff --git a/drivers/net/mvneta/mvneta_ethdev.c b/drivers/net/mvneta/mvneta_ethdev.c
index d004bfd01b..f7071bc2e5 100644
--- a/drivers/net/mvneta/mvneta_ethdev.c
+++ b/drivers/net/mvneta/mvneta_ethdev.c
@@ -695,23 +695,48 @@ mvneta_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 
 	stats->ipackets += ppio_stats.rx_packets +
 			ppio_stats.rx_broadcast_packets +
-			ppio_stats.rx_multicast_packets;
+			ppio_stats.rx_multicast_packets -
+			priv->prev_stats.ipackets;
 	stats->opackets += ppio_stats.tx_packets +
 			ppio_stats.tx_broadcast_packets +
-			ppio_stats.tx_multicast_packets;
-	stats->ibytes += ppio_stats.rx_bytes;
-	stats->obytes += ppio_stats.tx_bytes;
+			ppio_stats.tx_multicast_packets -
+			priv->prev_stats.opackets;
+	stats->ibytes += ppio_stats.rx_bytes - priv->prev_stats.ibytes;
+	stats->obytes += ppio_stats.tx_bytes - priv->prev_stats.obytes;
 	stats->imissed += ppio_stats.rx_discard +
-			  ppio_stats.rx_overrun;
+			  ppio_stats.rx_overrun -
+			  priv->prev_stats.imissed;
 
 	stats->ierrors = ppio_stats.rx_packets_err +
 			ppio_stats.rx_errors +
-			ppio_stats.rx_crc_error;
-	stats->oerrors = ppio_stats.tx_errors;
+			ppio_stats.rx_crc_error -
+			priv->prev_stats.ierrors;
+	stats->oerrors = ppio_stats.tx_errors - priv->prev_stats.oerrors;
 
 	return 0;
 }
 
+/**
+ * DPDK callback to clear device statistics.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ */
+static void
+mvneta_stats_reset(struct rte_eth_dev *dev)
+{
+	struct mvneta_priv *priv = dev->data->dev_private;
+	unsigned int ret;
+
+	if (!priv->ppio)
+		return;
+
+	ret = mvneta_stats_get(dev, &priv->prev_stats);
+	if (unlikely(ret))
+		RTE_LOG(ERR, PMD, "Failed to reset port statistics");
+}
+
+
 static const struct eth_dev_ops mvneta_ops = {
 	.dev_configure = mvneta_dev_configure,
 	.dev_start = mvneta_dev_start,
@@ -727,6 +752,7 @@ static const struct eth_dev_ops mvneta_ops = {
 	.mac_addr_set = mvneta_mac_addr_set,
 	.mtu_set = mvneta_mtu_set,
 	.stats_get = mvneta_stats_get,
+	.stats_reset = mvneta_stats_reset,
 	.dev_infos_get = mvneta_dev_infos_get,
 	.dev_supported_ptypes_get = mvneta_dev_supported_ptypes_get,
 	.rxq_info_get = mvneta_rxq_info_get,
diff --git a/drivers/net/mvneta/mvneta_ethdev.h b/drivers/net/mvneta/mvneta_ethdev.h
index 836a5e9310..101b0a8176 100644
--- a/drivers/net/mvneta/mvneta_ethdev.h
+++ b/drivers/net/mvneta/mvneta_ethdev.h
@@ -66,6 +66,7 @@ struct mvneta_priv {
 	struct neta_ppio_params ppio_params;
 
 	uint64_t rate_max;
+	struct rte_eth_stats prev_stats;
 };
 
 /** Current log type. */