port.c

}

int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data)
{
	struct phy_device *phydev;
	int ret = -EOPNOTSUPP;

	if (of_phy_is_fixed_link(dp->dn))
		return ret;

	phydev = dsa_port_get_phy_device(dp);
	if (IS_ERR_OR_NULL(phydev))
		return ret;

	ret = phy_ethtool_get_strings(phydev, data);
	put_device(&phydev->mdio.dev);

	return ret;
}
EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings);

int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data)
{
	struct phy_device *phydev;
	int ret = -EOPNOTSUPP;

	if (of_phy_is_fixed_link(dp->dn))
		return ret;

	phydev = dsa_port_get_phy_device(dp);
	if (IS_ERR_OR_NULL(phydev))
		return ret;

	ret = phy_ethtool_get_stats(phydev, NULL, data);
	put_device(&phydev->mdio.dev);

	return ret;
}
EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats);

int dsa_port_get_phy_sset_count(struct dsa_port *dp)
{
	struct phy_device *phydev;
	int ret = -EOPNOTSUPP;

	if (of_phy_is_fixed_link(dp->dn))
		return ret;

	phydev = dsa_port_get_phy_device(dp);
	if (IS_ERR_OR_NULL(phydev))
		return ret;

	ret = phy_ethtool_get_sset_count(phydev);
	put_device(&phydev->mdio.dev);

	return ret;
}
EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count);

int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr)
{
	struct dsa_notifier_hsr_info info = {
		.sw_index = dp->ds->index,
		.port = dp->index,
		.hsr = hsr,
	};
	int err;

	dp->hsr_dev = hsr;

	err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_JOIN, &info);
	if (err)
		dp->hsr_dev = NULL;

	return err;
}

void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr)
{
	struct dsa_notifier_hsr_info info = {
		.sw_index = dp->ds->index,
		.port = dp->index,
		.hsr = hsr,
	};
	int err;

	dp->hsr_dev = NULL;

	err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_LEAVE, &info);
	if (err)
		pr_err("DSA: failed to notify DSA_NOTIFIER_HSR_LEAVE\n");
}