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 d004bfd..f7071bc 100644 (file)
--- 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 836a5e9..101b0a8 100644 (file)
--- 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. */