// SPDX-License-Identifier: GPL-2.0+
/* Copyright (c) 2022 Amarula Solutions, Dario Binacchi <dario.binacchi@amarulasolutions.com>
 *
 */

#include <linux/can/dev.h>
#include <linux/ethtool.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/platform_device.h>

#include "slcan.h"

static const char slcan_priv_flags_strings[][ETH_GSTRING_LEN] = {
#define SLCAN_PRIV_FLAGS_ERR_RST_ON_OPEN BIT(0)
        "err-rst-on-open",
};

static void slcan_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
{
        switch (stringset) {
        case ETH_SS_PRIV_FLAGS:
                memcpy(data, slcan_priv_flags_strings,
                       sizeof(slcan_priv_flags_strings));
        }
}

static u32 slcan_get_priv_flags(struct net_device *ndev)
{
        u32 flags = 0;

        if (slcan_err_rst_on_open(ndev))
                flags |= SLCAN_PRIV_FLAGS_ERR_RST_ON_OPEN;

        return flags;
}

static int slcan_set_priv_flags(struct net_device *ndev, u32 flags)
{
        bool err_rst_op_open = !!(flags & SLCAN_PRIV_FLAGS_ERR_RST_ON_OPEN);

        return slcan_enable_err_rst_on_open(ndev, err_rst_op_open);
}

static int slcan_get_sset_count(struct net_device *netdev, int sset)
{
        switch (sset) {
        case ETH_SS_PRIV_FLAGS:
                return ARRAY_SIZE(slcan_priv_flags_strings);
        default:
                return -EOPNOTSUPP;
        }
}

const struct ethtool_ops slcan_ethtool_ops = {
        .get_strings = slcan_get_strings,
        .get_priv_flags = slcan_get_priv_flags,
        .set_priv_flags = slcan_set_priv_flags,
        .get_sset_count = slcan_get_sset_count,
        .get_ts_info = ethtool_op_get_ts_info,
};