From: <akiyano@amazon.com>
To: <davem@davemloft.net>, <netdev@vger.kernel.org>
Cc: Arthur Kiyanovski <akiyano@amazon.com>, <dwmw@amazon.com>,
<zorik@amazon.com>, <matua@amazon.com>, <saeedb@amazon.com>,
<msw@amazon.com>, <aliguori@amazon.com>, <nafea@amazon.com>,
<gtzalik@amazon.com>, <netanel@amazon.com>, <alisaidi@amazon.com>,
<benh@amazon.com>, <sameehj@amazon.com>, <ndagan@amazon.com>
Subject: [PATCH V1 net-next 10/11] net: ena: fix retrieval of nonadaptive interrupt moderation intervals
Date: Fri, 13 Sep 2019 01:08:47 +0300 [thread overview]
Message-ID: <1568326128-4057-11-git-send-email-akiyano@amazon.com> (raw)
In-Reply-To: <1568326128-4057-1-git-send-email-akiyano@amazon.com>
From: Arthur Kiyanovski <akiyano@amazon.com>
Nonadaptive interrupt moderation intervals are assigned the value set
by the user in ethtool -C divided by ena_dev->intr_delay_resolution.
Therefore when the user tries to get the nonadaptive interrupt moderation
intervals with ethtool -c the code needs to multiply the saved value
by ena_dev->intr_delay_resolution.
The current code erroneously divides instead of multiplying in ethtool -c.
This patch fixes this.
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
---
drivers/net/ethernet/amazon/ena/ena_ethtool.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/amazon/ena/ena_ethtool.c b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
index 0f90e2296630..16553d92fad2 100644
--- a/drivers/net/ethernet/amazon/ena/ena_ethtool.c
+++ b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
@@ -310,14 +310,15 @@ static int ena_get_coalesce(struct net_device *net_dev,
/* the devie doesn't support interrupt moderation */
return -EOPNOTSUPP;
}
+
coalesce->tx_coalesce_usecs =
- ena_com_get_nonadaptive_moderation_interval_tx(ena_dev) /
+ ena_com_get_nonadaptive_moderation_interval_tx(ena_dev) *
ena_dev->intr_delay_resolution;
if (!ena_com_get_adaptive_moderation_enabled(ena_dev))
coalesce->rx_coalesce_usecs =
ena_com_get_nonadaptive_moderation_interval_rx(ena_dev)
- / ena_dev->intr_delay_resolution;
+ * ena_dev->intr_delay_resolution;
coalesce->use_adaptive_rx_coalesce =
ena_com_get_adaptive_moderation_enabled(ena_dev);
--
2.17.2
next prev parent reply other threads:[~2019-09-12 22:11 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-12 22:08 [PATCH V1 net-next 00/11] net: ena: implement adaptive interrupt moderation using dim akiyano
2019-09-12 22:08 ` [PATCH V1 net-next 01/11] net: ena: add intr_moder_rx_interval to struct ena_com_dev and use it akiyano
2019-09-15 18:32 ` David Miller
2019-09-16 11:39 ` Kiyanovski, Arthur
2019-09-12 22:08 ` [PATCH V1 net-next 02/11] net: ena: switch to dim algorithm for rx adaptive interrupt moderation akiyano
2019-09-12 22:08 ` [PATCH V1 net-next 03/11] net: ena: reimplement set/get_coalesce() akiyano
2019-09-12 22:08 ` [PATCH V1 net-next 04/11] net: ena: enable the interrupt_moderation in driver_supported_features akiyano
2019-09-12 22:08 ` [PATCH V1 net-next 05/11] net: ena: remove code duplication in ena_com_update_nonadaptive_moderation_interval _*() akiyano
2019-09-12 22:08 ` [PATCH V1 net-next 06/11] net: ena: remove old adaptive interrupt moderation code from ena_netdev akiyano
2019-09-12 22:08 ` [PATCH V1 net-next 07/11] net: ena: remove ena_restore_ethtool_params() and relevant fields akiyano
2019-09-12 22:08 ` [PATCH V1 net-next 08/11] net: ena: remove all old adaptive rx interrupt moderation code from ena_com akiyano
2019-09-12 22:08 ` [PATCH V1 net-next 09/11] net: ena: fix update of interrupt moderation register akiyano
2019-09-12 22:08 ` akiyano [this message]
2019-09-12 22:08 ` [PATCH V1 net-next 11/11] net: ena: fix incorrect update of intr_delay_resolution akiyano
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