1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright 2021, Dario Binacchi <dariobin@libero.it>
4 */
5
6 #include <linux/ethtool.h>
7 #include <linux/kernel.h>
8 #include <linux/platform_device.h>
9 #include <linux/netdevice.h>
10 #include <linux/can/dev.h>
11
12 #include "c_can.h"
13
c_can_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * info)14 static void c_can_get_drvinfo(struct net_device *netdev,
15 struct ethtool_drvinfo *info)
16 {
17 struct c_can_priv *priv = netdev_priv(netdev);
18 strscpy(info->driver, "c_can", sizeof(info->driver));
19 strscpy(info->bus_info, dev_name(priv->device), sizeof(info->bus_info));
20 }
21
c_can_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring)22 static void c_can_get_ringparam(struct net_device *netdev,
23 struct ethtool_ringparam *ring)
24 {
25 struct c_can_priv *priv = netdev_priv(netdev);
26
27 ring->rx_max_pending = priv->msg_obj_num;
28 ring->tx_max_pending = priv->msg_obj_num;
29 ring->rx_pending = priv->msg_obj_rx_num;
30 ring->tx_pending = priv->msg_obj_tx_num;
31 }
32
33 static const struct ethtool_ops c_can_ethtool_ops = {
34 .get_drvinfo = c_can_get_drvinfo,
35 .get_ringparam = c_can_get_ringparam,
36 };
37
c_can_set_ethtool_ops(struct net_device * netdev)38 void c_can_set_ethtool_ops(struct net_device *netdev)
39 {
40 netdev->ethtool_ops = &c_can_ethtool_ops;
41 }
42