net: ena: add unmask interrupts statistics to ethtool

Add unmask interrupts statistics to ethtool.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/amazon/ena/ena_ethtool.c

@@ -83,6 +83,7 @@ static const struct ena_stats ena_stats_tx_strings[] = {
 	ENA_STAT_TX_ENTRY(bad_req_id),
 	ENA_STAT_TX_ENTRY(llq_buffer_copy),
 	ENA_STAT_TX_ENTRY(missed_tx),
+	ENA_STAT_TX_ENTRY(unmask_interrupt),
 };
 
 static const struct ena_stats ena_stats_rx_strings[] = {

drivers/net/ethernet/amazon/ena/ena_netdev.c

@@ -1762,6 +1762,9 @@ static void ena_unmask_interrupt(struct ena_ring *tx_ring,
 				tx_ring->smoothed_interval,
 				true);
 
+	u64_stats_update_begin(&tx_ring->syncp);
+	tx_ring->tx_stats.unmask_interrupt++;
+	u64_stats_update_end(&tx_ring->syncp);
 	/* It is a shared MSI-X.
 	 * Tx and Rx CQ have pointer to it.
 	 * So we use one of them to reach the intr reg

drivers/net/ethernet/amazon/ena/ena_netdev.h

@@ -248,6 +248,7 @@ struct ena_stats_tx {
 	u64 bad_req_id;
 	u64 llq_buffer_copy;
 	u64 missed_tx;
+	u64 unmask_interrupt;
 };
 
 struct ena_stats_rx {