systemd/src/libsystemd/sd-network/network-util.h

/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once

#include <errno.h>
#include <stdbool.h>

#include "macro.h"

bool network_is_online(void);

typedef enum AddressFamily {
        /* This is a bitmask, though it usually doesn't feel that way! */
        ADDRESS_FAMILY_NO             = 0,
        ADDRESS_FAMILY_IPV4           = 1 << 0,
        ADDRESS_FAMILY_IPV6           = 1 << 1,
        ADDRESS_FAMILY_YES            = ADDRESS_FAMILY_IPV4 | ADDRESS_FAMILY_IPV6,
        _ADDRESS_FAMILY_MAX,
        _ADDRESS_FAMILY_INVALID = -EINVAL,
} AddressFamily;

typedef enum LinkOperationalState {
        LINK_OPERSTATE_MISSING,
        LINK_OPERSTATE_OFF,
        LINK_OPERSTATE_NO_CARRIER,
        LINK_OPERSTATE_DORMANT,
        LINK_OPERSTATE_DEGRADED_CARRIER,
        LINK_OPERSTATE_CARRIER,
        LINK_OPERSTATE_DEGRADED,
        LINK_OPERSTATE_ENSLAVED,
        LINK_OPERSTATE_ROUTABLE,
        _LINK_OPERSTATE_MAX,
        _LINK_OPERSTATE_INVALID = -EINVAL,
} LinkOperationalState;

typedef enum LinkCarrierState {
        LINK_CARRIER_STATE_OFF              = LINK_OPERSTATE_OFF,
        LINK_CARRIER_STATE_NO_CARRIER       = LINK_OPERSTATE_NO_CARRIER,
        LINK_CARRIER_STATE_DORMANT          = LINK_OPERSTATE_DORMANT,
        LINK_CARRIER_STATE_DEGRADED_CARRIER = LINK_OPERSTATE_DEGRADED_CARRIER,
        LINK_CARRIER_STATE_CARRIER          = LINK_OPERSTATE_CARRIER,
        LINK_CARRIER_STATE_ENSLAVED         = LINK_OPERSTATE_ENSLAVED,
        _LINK_CARRIER_STATE_MAX,
        _LINK_CARRIER_STATE_INVALID = -EINVAL,
} LinkCarrierState;

typedef enum LinkAddressState {
        LINK_ADDRESS_STATE_OFF,
        LINK_ADDRESS_STATE_DEGRADED,
        LINK_ADDRESS_STATE_ROUTABLE,
        _LINK_ADDRESS_STATE_MAX,
        _LINK_ADDRESS_STATE_INVALID = -EINVAL,
} LinkAddressState;

typedef enum LinkOnlineState {
        LINK_ONLINE_STATE_OFFLINE,
        LINK_ONLINE_STATE_PARTIAL,
        LINK_ONLINE_STATE_ONLINE,
        _LINK_ONLINE_STATE_MAX,
        _LINK_ONLINE_STATE_INVALID = -EINVAL,
} LinkOnlineState;

const char* link_operstate_to_string(LinkOperationalState s) _const_;
LinkOperationalState link_operstate_from_string(const char *s) _pure_;

const char* link_carrier_state_to_string(LinkCarrierState s) _const_;
LinkCarrierState link_carrier_state_from_string(const char *s) _pure_;

const char* link_required_address_family_to_string(AddressFamily s) _const_;
AddressFamily link_required_address_family_from_string(const char *s) _pure_;

const char* link_address_state_to_string(LinkAddressState s) _const_;
LinkAddressState link_address_state_from_string(const char *s) _pure_;

const char* link_online_state_to_string(LinkOnlineState s) _const_;
LinkOnlineState link_online_state_from_string(const char *s) _pure_;

typedef struct LinkOperationalStateRange {
        LinkOperationalState min;
        LinkOperationalState max;
} LinkOperationalStateRange;

#define LINK_OPERSTATE_RANGE_DEFAULT (LinkOperationalStateRange) { LINK_OPERSTATE_DEGRADED, \
                                                                   LINK_OPERSTATE_ROUTABLE }

int parse_operational_state_range(const char *str, LinkOperationalStateRange *out);
int network_link_get_operational_state(int ifindex, LinkOperationalState *ret);