From: Robert-Ionut Alexa <robert-ionut.alexa@xxxxxxx>
The .get_channels() ethtool_ops callback is implemented and exports the
number of queues: Rx, Tx, Tx conf and Rx err.
The last two ones, Tx confirmation and Rx err, are counted as 'others'.
The .set_channels() callback is not implemented since the DPAA2
software/firmware architecture does not allow the dynamic
reconfiguration of the number of queues.
Signed-off-by: Robert-Ionut Alexa <robert-ionut.alexa@xxxxxxx>
Signed-off-by: Ioana Ciornei <ioana.ciornei@xxxxxxx>
---
Changes in v2:
- none
.../ethernet/freescale/dpaa2/dpaa2-ethtool.c | 27 +++++++++++++++++--
1 file changed, 25 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
index eea7d7a07c00..97ec2adf5dc5 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
@@ -1,7 +1,6 @@
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/* Copyright 2014-2016 Freescale Semiconductor Inc.
- * Copyright 2016 NXP
- * Copyright 2020 NXP
+ * Copyright 2016-2022 NXP
*/
#include <linux/net_tstamp.h>
@@ -876,6 +875,29 @@ static int dpaa2_eth_set_coalesce(struct net_device *dev,
return err;
}
+static void dpaa2_eth_get_channels(struct net_device *net_dev,
+ struct ethtool_channels *channels)
+{
+ struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
+ int queue_count = dpaa2_eth_queue_count(priv);
+
+ channels->max_rx = queue_count;
+ channels->max_tx = queue_count;
+ channels->rx_count = queue_count;
+ channels->tx_count = queue_count;
+
+ /* Tx confirmation and Rx error */
+ channels->max_other = queue_count + 1;
+ channels->max_combined = channels->max_rx +
+ channels->max_tx +
+ channels->max_other;
+ /* Tx conf and Rx err */
+ channels->other_count = queue_count + 1;
+ channels->combined_count = channels->rx_count +
+ channels->tx_count +
+ channels->other_count;
+}
+
const struct ethtool_ops dpaa2_ethtool_ops = {
.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
@@ -896,4 +918,5 @@ const struct ethtool_ops dpaa2_ethtool_ops = {
.set_tunable = dpaa2_eth_set_tunable,
.get_coalesce = dpaa2_eth_get_coalesce,
.set_coalesce = dpaa2_eth_set_coalesce,
+ .get_channels = dpaa2_eth_get_channels,
};
--
2.25.1
