[PATCH V1 net-next 09/11] net: ena: fix update of interrupt moderation register
From: <akiyano@amazon.com>
Date: 2019-09-12 22:10:56
Subsystem:
amazon ethernet drivers, networking drivers, the rest · Maintainers:
Arthur Kiyanovski, David Arinzon, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Arthur Kiyanovski <akiyano@amazon.com> Current implementation always updates the interrupt register with the smoothed_interval of the rx_ring. However this should be done only in case of adaptive interrupt moderation. If non-adaptive interrupt moderation is used, the non-adaptive interrupt moderation interval should be used. This commit fixes that. Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com> --- drivers/net/ethernet/amazon/ena/ena_netdev.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index 8b9f8b90e525..617f51890449 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c@@ -1187,12 +1187,16 @@ static void ena_unmask_interrupt(struct ena_ring *tx_ring, struct ena_ring *rx_ring) { struct ena_eth_io_intr_reg intr_reg; + u32 rx_interval = ena_com_get_adaptive_moderation_enabled(rx_ring->ena_dev) ? + rx_ring->smoothed_interval : + ena_com_get_nonadaptive_moderation_interval_rx(rx_ring->ena_dev); + /* Update intr register: rx intr delay, * tx intr delay and interrupt unmask */ ena_com_update_intr_reg(&intr_reg, - rx_ring->smoothed_interval, + rx_interval, tx_ring->smoothed_interval, true);
--
2.17.2