[dpdk-dev] [PATCH 17/20] net/ena: new way of getting rx drops

[Michal Krawczyk]

From: Rafal Kozik <rk at semihalf.com>

The Rx drops cannot be acquired using the older API. Now, it must be
read in keep alive message.

Signed-off-by: Rafal Kozik <rk at semihalf.com>
Acked-by: Michal Krawczyk <mk at semihalf.com>
---
 drivers/net/ena/ena_ethdev.c | 10 ++++++++--
 drivers/net/ena/ena_ethdev.h |  1 +
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
index c3a26d402..2b84cc79d 100644
--- a/drivers/net/ena/ena_ethdev.c
+++ b/drivers/net/ena/ena_ethdev.c
@@ -933,6 +933,7 @@ static void ena_stats_restart(struct rte_eth_dev *dev)
 	rte_atomic64_init(&adapter->drv_stats->ierrors);
 	rte_atomic64_init(&adapter->drv_stats->oerrors);
 	rte_atomic64_init(&adapter->drv_stats->rx_nombuf);
+	rte_atomic64_init(&adapter->drv_stats->rx_drops);
 }
 
 static int ena_stats_get(struct rte_eth_dev *dev,
@@ -965,10 +966,9 @@ static int ena_stats_get(struct rte_eth_dev *dev,
 					ena_stats.rx_bytes_low);
 	stats->obytes = __MERGE_64B_H_L(ena_stats.tx_bytes_high,
 					ena_stats.tx_bytes_low);
-	stats->imissed = __MERGE_64B_H_L(ena_stats.rx_drops_high,
-					 ena_stats.rx_drops_low);
 
 	/* Driver related stats */
+	stats->imissed = rte_atomic64_read(&adapter->drv_stats->rx_drops);
 	stats->ierrors = rte_atomic64_read(&adapter->drv_stats->ierrors);
 	stats->oerrors = rte_atomic64_read(&adapter->drv_stats->oerrors);
 	stats->rx_nombuf = rte_atomic64_read(&adapter->drv_stats->rx_nombuf);
@@ -2689,8 +2689,14 @@ static void ena_keep_alive(void *adapter_data,
 			   __rte_unused struct ena_admin_aenq_entry *aenq_e)
 {
 	struct ena_adapter *adapter = (struct ena_adapter *)adapter_data;
+	struct ena_admin_aenq_keep_alive_desc *desc;
+	uint64_t rx_drops;
 
 	adapter->timestamp_wd = rte_get_timer_cycles();
+
+	desc = (struct ena_admin_aenq_keep_alive_desc *)aenq_e;
+	rx_drops = ((uint64_t)desc->rx_drops_high << 32) | desc->rx_drops_low;
+	rte_atomic64_set(&adapter->drv_stats->rx_drops, rx_drops);
 }
 
 /**
diff --git a/drivers/net/ena/ena_ethdev.h b/drivers/net/ena/ena_ethdev.h
index 9eca6e63b..309b92f65 100644
--- a/drivers/net/ena/ena_ethdev.h
+++ b/drivers/net/ena/ena_ethdev.h
@@ -158,6 +158,7 @@ struct ena_driver_stats {
 	rte_atomic64_t ierrors;
 	rte_atomic64_t oerrors;
 	rte_atomic64_t rx_nombuf;
+	rte_atomic64_t rx_drops;
 };
 
 struct ena_stats_dev {
-- 
2.14.1