[PATCH net-next 11/13] net: ena: update driver's rx drop statistics

[netanel]

From: Netanel Belgazal <neta...@amazon.com>

rx drop counter is reported by the device in the keep-alive
event.
update the driver's counter with the device counter.

Signed-off-by: Netanel Belgazal <neta...@amazon.com>
---
 drivers/net/ethernet/amazon/ena/ena_netdev.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c 
b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index 7f31f4c..4540cd3 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -3483,8 +3483,17 @@ static void ena_keep_alive_wd(void *adapter_data,
                              struct ena_admin_aenq_entry *aenq_e)
 {
        struct ena_adapter *adapter = (struct ena_adapter *)adapter_data;
+       struct ena_admin_aenq_keep_alive_desc *desc;
+       u64 rx_drops;
 
+       desc = (struct ena_admin_aenq_keep_alive_desc *)aenq_e;
        adapter->last_keep_alive_jiffies = jiffies;
+
+       rx_drops = ((u64)desc->rx_drops_high << 32) | desc->rx_drops_low;
+
+       u64_stats_update_begin(&adapter->syncp);
+       adapter->dev_stats.rx_drops = rx_drops;
+       u64_stats_update_end(&adapter->syncp);
 }
 
 static void ena_notification(void *adapter_data,
-- 
2.7.4