// SPDX-License-Identifier: GPL-2.0// Copyright (c) 2020 Facebook #include <linux/debugfs.h>#include <linux/ethtool.h>#include <linux/random.h> #include "netdevsim.h" static voidnsim_get_pause_stats(struct net_device *dev,		     struct ethtool_pause_stats *pause_stats){	struct netdevsim *ns = netdev_priv(dev); 	if (ns->ethtool.report_stats_rx)		pause_stats->rx_pause_frames = 1;	if (ns->ethtool.report_stats_tx)		pause_stats->tx_pause_frames = 2;} static voidnsim_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam *pause){	struct netdevsim *ns = netdev_priv(dev); 	pause->autoneg = 0; /* We don't support ksettings, so can't pretend */	pause->rx_pause = ns->ethtool.rx;	pause->tx_pause = ns->ethtool.tx;} static intnsim_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam *pause){	struct netdevsim *ns = netdev_priv(dev); 	if (pause->autoneg)		return -EINVAL; 	ns->ethtool.rx = pause->rx_pause;	ns->ethtool.tx = pause->tx_pause;	return 0;} static const struct ethtool_ops nsim_ethtool_ops = {	.get_pause_stats	= nsim_get_pause_stats,	.get_pauseparam		= nsim_get_pauseparam,	.set_pauseparam		= nsim_set_pauseparam,}; void nsim_ethtool_init(struct netdevsim *ns){	struct dentry *ethtool, *dir; 	ns->netdev->ethtool_ops = &nsim_ethtool_ops; 	ethtool = debugfs_create_dir("ethtool", ns->nsim_dev_port->ddir); 	dir = debugfs_create_dir("pause", ethtool);	debugfs_create_bool("report_stats_rx", 0600, dir,			    &ns->ethtool.report_stats_rx);	debugfs_create_bool("report_stats_tx", 0600, dir,			    &ns->ethtool.report_stats_tx);}