[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20210527084532.1384031-18-mkl@pengutronix.de>
Date: Thu, 27 May 2021 10:45:28 +0200
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, kuba@...nel.org, linux-can@...r.kernel.org,
kernel@...gutronix.de, Dario Binacchi <dariobin@...ero.it>,
Andrew Lunn <andrew@...n.ch>,
Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [net-next 17/21] can: c_can: add ethtool support
From: Dario Binacchi <dariobin@...ero.it>
With commit 132f2d45fb23 ("can: c_can: add support to 64 message
objects") the number of message objects used for reception /
transmission depends on FIFO size.
The ethtools API support allows you to retrieve this info. Driver info
has been added too.
Link: https://lore.kernel.org/r/20210514165549.14365-2-dariobin@libero.it
Signed-off-by: Dario Binacchi <dariobin@...ero.it>
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
drivers/net/can/c_can/Makefile | 5 +++
drivers/net/can/c_can/c_can.h | 2 +
drivers/net/can/c_can/c_can_ethtool.c | 43 +++++++++++++++++++
.../net/can/c_can/{c_can.c => c_can_main.c} | 1 +
4 files changed, 51 insertions(+)
create mode 100644 drivers/net/can/c_can/c_can_ethtool.c
rename drivers/net/can/c_can/{c_can.c => c_can_main.c} (99%)
diff --git a/drivers/net/can/c_can/Makefile b/drivers/net/can/c_can/Makefile
index e6a94c948531..6fa3b2b9e4b9 100644
--- a/drivers/net/can/c_can/Makefile
+++ b/drivers/net/can/c_can/Makefile
@@ -4,5 +4,10 @@
#
obj-$(CONFIG_CAN_C_CAN) += c_can.o
+
+c_can-objs :=
+c_can-objs += c_can_ethtool.o
+c_can-objs += c_can_main.o
+
obj-$(CONFIG_CAN_C_CAN_PLATFORM) += c_can_platform.o
obj-$(CONFIG_CAN_C_CAN_PCI) += c_can_pci.o
diff --git a/drivers/net/can/c_can/c_can.h b/drivers/net/can/c_can/c_can.h
index 517845c4571e..4247ff80a29c 100644
--- a/drivers/net/can/c_can/c_can.h
+++ b/drivers/net/can/c_can/c_can.h
@@ -218,4 +218,6 @@ int c_can_power_up(struct net_device *dev);
int c_can_power_down(struct net_device *dev);
#endif
+void c_can_set_ethtool_ops(struct net_device *dev);
+
#endif /* C_CAN_H */
diff --git a/drivers/net/can/c_can/c_can_ethtool.c b/drivers/net/can/c_can/c_can_ethtool.c
new file mode 100644
index 000000000000..cd5f07fca2a5
--- /dev/null
+++ b/drivers/net/can/c_can/c_can_ethtool.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2021, Dario Binacchi <dariobin@...ero.it>
+ */
+
+#include <linux/ethtool.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/netdevice.h>
+#include <linux/can/dev.h>
+
+#include "c_can.h"
+
+static void c_can_get_drvinfo(struct net_device *netdev,
+ struct ethtool_drvinfo *info)
+{
+ struct c_can_priv *priv = netdev_priv(netdev);
+ struct platform_device *pdev = to_platform_device(priv->device);
+
+ strscpy(info->driver, "c_can", sizeof(info->driver));
+ strscpy(info->bus_info, pdev->name, sizeof(info->bus_info));
+}
+
+static void c_can_get_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *ring)
+{
+ struct c_can_priv *priv = netdev_priv(netdev);
+
+ ring->rx_max_pending = priv->msg_obj_num;
+ ring->tx_max_pending = priv->msg_obj_num;
+ ring->rx_pending = priv->msg_obj_rx_num;
+ ring->tx_pending = priv->msg_obj_tx_num;
+}
+
+static const struct ethtool_ops c_can_ethtool_ops = {
+ .get_drvinfo = c_can_get_drvinfo,
+ .get_ringparam = c_can_get_ringparam,
+};
+
+void c_can_set_ethtool_ops(struct net_device *netdev)
+{
+ netdev->ethtool_ops = &c_can_ethtool_ops;
+}
diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can_main.c
similarity index 99%
rename from drivers/net/can/c_can/c_can.c
rename to drivers/net/can/c_can/c_can_main.c
index 1fa47968c2ec..7588f70ca0fe 100644
--- a/drivers/net/can/c_can/c_can.c
+++ b/drivers/net/can/c_can/c_can_main.c
@@ -1334,6 +1334,7 @@ int register_c_can_dev(struct net_device *dev)
dev->flags |= IFF_ECHO; /* we support local echo */
dev->netdev_ops = &c_can_netdev_ops;
+ c_can_set_ethtool_ops(dev);
err = register_candev(dev);
if (!err)
--
2.30.2
Powered by blists - more mailing lists