/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (C) 2015 Red Hat, Inc.
 */

#ifndef __NM_PLATFORM_UTILS_H__
#define __NM_PLATFORM_UTILS_H__

#include "nm-platform.h"
#include "nm-setting-wired.h"
#include "nm-libnm-core-intern/nm-ethtool-utils.h"

/*****************************************************************************/

const char *nmp_utils_ethtool_get_driver(int ifindex);
gboolean    nmp_utils_ethtool_supports_carrier_detect(int ifindex);
gboolean    nmp_utils_ethtool_supports_vlans(int ifindex);
int         nmp_utils_ethtool_get_peer_ifindex(int ifindex);
gboolean    nmp_utils_ethtool_get_wake_on_lan(int ifindex);
gboolean    nmp_utils_ethtool_set_wake_on_lan(int                     ifindex,
                                              NMSettingWiredWakeOnLan wol,
                                              const char *            wol_password);

gboolean nmp_utils_ethtool_get_link_settings(int                       ifindex,
                                             gboolean *                out_autoneg,
                                             guint32 *                 out_speed,
                                             NMPlatformLinkDuplexType *out_duplex);
gboolean nmp_utils_ethtool_set_link_settings(int                      ifindex,
                                             gboolean                 autoneg,
                                             guint32                  speed,
                                             NMPlatformLinkDuplexType duplex);

gboolean nmp_utils_ethtool_get_permanent_address(int ifindex, guint8 *buf, size_t *length);

typedef struct {
    /* We don't want to include <linux/ethtool.h> in header files,
     * thus create a ABI compatible version of struct ethtool_drvinfo.*/
    guint32 _private_cmd;
    char    driver[32];
    char    version[32];
    char    fw_version[32];
    char    _private_bus_info[32];
    char    _private_erom_version[32];
    char    _private_reserved2[12];
    guint32 _private_n_priv_flags;
    guint32 _private_n_stats;
    guint32 _private_testinfo_len;
    guint32 _private_eedump_len;
    guint32 _private_regdump_len;
} NMPUtilsEthtoolDriverInfo;

gboolean nmp_utils_ethtool_get_driver_info(int ifindex, NMPUtilsEthtoolDriverInfo *data);

typedef struct {
    NMEthtoolID ethtool_id;

    guint8 n_kernel_names;

    /* one NMEthtoolID refers to one or more kernel_names. The reason for supporting this complexity
     * (where one NMSettingEthtool option refers to multiple kernel features)  is to follow what
     * ethtool does, where "tx" is an alias for multiple features. */
    const char *const *kernel_names;
} NMEthtoolFeatureInfo;

typedef struct {
    const NMEthtoolFeatureInfo *info;

    guint idx_ss_features;

    /* one NMEthtoolFeatureInfo references one or more kernel_names. This is the index
     * of the matching info->kernel_names */
    guint8 idx_kernel_name;

    bool available : 1;
    bool requested : 1;
    bool active : 1;
    bool never_changed : 1;
} NMEthtoolFeatureState;

struct _NMEthtoolFeatureStates {
    guint n_states;

    guint n_ss_features;

    /* indexed by NMEthtoolID - _NM_ETHTOOL_ID_FEATURE_FIRST */
    const NMEthtoolFeatureState *const *states_indexed[_NM_ETHTOOL_ID_FEATURE_NUM];

    /* the same content, here as a list of n_states entries. */
    const NMEthtoolFeatureState states_list[];
};

NMEthtoolFeatureStates *nmp_utils_ethtool_get_features(int ifindex);

gboolean nmp_utils_ethtool_set_features(
    int                           ifindex,
    const NMEthtoolFeatureStates *features,
    const NMTernary *requested /* indexed by NMEthtoolID - _NM_ETHTOOL_ID_FEATURE_FIRST */,
    gboolean         do_set /* or reset */);

struct _NMEthtoolCoalesceState {
    guint32
        s[_NM_ETHTOOL_ID_COALESCE_NUM /* indexed by (NMEthtoolID - _NM_ETHTOOL_ID_COALESCE_FIRST) */
    ];
};

gboolean nmp_utils_ethtool_get_coalesce(int ifindex, NMEthtoolCoalesceState *coalesce);

gboolean nmp_utils_ethtool_set_coalesce(int ifindex, const NMEthtoolCoalesceState *coalesce);

struct _NMEthtoolRingState {
    guint32 rx_pending;
    guint32 rx_mini_pending;
    guint32 rx_jumbo_pending;
    guint32 tx_pending;
};

gboolean nmp_utils_ethtool_get_ring(int ifindex, NMEthtoolRingState *ring);

gboolean nmp_utils_ethtool_set_ring(int ifindex, const NMEthtoolRingState *ring);

/*****************************************************************************/

gboolean nmp_utils_mii_supports_carrier_detect(int ifindex);

struct udev_device;

const char *nmp_utils_udev_get_driver(struct udev_device *udevice);

NMIPConfigSource nmp_utils_ip_config_source_from_rtprot(guint8 rtprot) _nm_const;
guint8           nmp_utils_ip_config_source_coerce_to_rtprot(NMIPConfigSource source) _nm_const;
NMIPConfigSource nmp_utils_ip_config_source_coerce_from_rtprot(NMIPConfigSource source) _nm_const;
NMIPConfigSource nmp_utils_ip_config_source_round_trip_rtprot(NMIPConfigSource source) _nm_const;
const char *nmp_utils_ip_config_source_to_string(NMIPConfigSource source, char *buf, gsize len);

const char *nmp_utils_if_indextoname(int ifindex, char *out_ifname /*IFNAMSIZ*/);
int         nmp_utils_if_nametoindex(const char *ifname);

int nmp_utils_sysctl_open_netdir(int ifindex, const char *ifname_guess, char *out_ifname);

#endif /* __NM_PLATFORM_UTILS_H__ */