drivers/net/can/c_can/c_can_ethtool.c

   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
  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
  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
  38 void c_can_set_ethtool_ops(struct net_device *netdev)
  39 {
  40         netdev->ethtool_ops = &c_can_ethtool_ops;
  41 }