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/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
#include <endian.h>
#include "sd-bus.h"
#include "sd-device.h"
#include "sd-dhcp-client.h"
#include "sd-dhcp-server.h"
#include "sd-dhcp6-client.h"
#include "sd-ipv4ll.h"
#include "sd-lldp.h"
#include "sd-ndisc.h"
#include "sd-radv.h"
#include "sd-netlink.h"
#include "list.h"
#include "log-link.h"
#include "network-util.h"
#include "networkd-util.h"
#include "ordered-set.h"
#include "resolve-util.h"
#include "set.h"
typedef enum LinkState {
LINK_STATE_PENDING, /* udev has not initialized the link */
LINK_STATE_INITIALIZED, /* udev has initialized the link */
LINK_STATE_CONFIGURING, /* configuring addresses, routes, etc. */
LINK_STATE_CONFIGURED, /* everything is configured */
LINK_STATE_UNMANAGED, /* Unmanaged=yes is set */
LINK_STATE_FAILED, /* at least one configuration process failed */
LINK_STATE_LINGER, /* RTM_DELLINK for the link has been received */
_LINK_STATE_MAX,
_LINK_STATE_INVALID = -1
} LinkState;
typedef struct Manager Manager;
typedef struct Network Network;
typedef struct Address Address;
typedef struct DUID DUID;
typedef struct Link {
Manager *manager;
unsigned n_ref;
int ifindex;
int master_ifindex;
char *ifname;
char *kind;
unsigned short iftype;
char *state_file;
struct ether_addr mac;
struct in6_addr ipv6ll_address;
uint32_t mtu;
sd_device *sd_device;
unsigned flags;
uint8_t kernel_operstate;
Network *network;
LinkState state;
LinkOperationalState operstate;
LinkCarrierState carrier_state;
LinkAddressState address_state;
unsigned address_messages;
unsigned address_label_messages;
unsigned neighbor_messages;
unsigned route_messages;
unsigned nexthop_messages;
unsigned routing_policy_rule_messages;
unsigned routing_policy_rule_remove_messages;
unsigned enslaving;
Set *addresses;
Set *addresses_foreign;
Set *neighbors;
Set *neighbors_foreign;
Set *routes;
Set *routes_foreign;
Set *nexthops;
Set *nexthops_foreign;
sd_dhcp_client *dhcp_client;
sd_dhcp_lease *dhcp_lease, *dhcp_lease_old;
Set *dhcp_routes;
char *lease_file;
uint32_t original_mtu;
unsigned dhcp4_messages;
bool dhcp4_route_failed:1;
bool dhcp4_route_retrying:1;
bool dhcp4_configured:1;
bool dhcp6_configured:1;
unsigned ndisc_messages;
bool ndisc_configured;
sd_ipv4ll *ipv4ll;
bool ipv4ll_address:1;
bool addresses_configured:1;
bool addresses_ready:1;
bool neighbors_configured:1;
bool static_routes_configured:1;
bool static_routes_ready:1;
bool static_nexthops_configured:1;
bool routing_policy_rules_configured:1;
bool setting_mtu:1;
LIST_HEAD(Address, pool_addresses);
sd_dhcp_server *dhcp_server;
sd_ndisc *ndisc;
Set *ndisc_rdnss;
Set *ndisc_dnssl;
sd_radv *radv;
sd_dhcp6_client *dhcp6_client;
/* This is about LLDP reception */
sd_lldp *lldp;
char *lldp_file;
/* This is about LLDP transmission */
unsigned lldp_tx_fast; /* The LLDP txFast counter (See 802.1ab-2009, section 9.2.5.18) */
sd_event_source *lldp_emit_event_source;
Hashmap *bound_by_links;
Hashmap *bound_to_links;
Set *slaves;
/* For speed meter */
struct rtnl_link_stats64 stats_old, stats_new;
bool stats_updated;
/* All kinds of DNS configuration */
struct in_addr_data *dns;
unsigned n_dns;
OrderedSet *search_domains, *route_domains;
int dns_default_route;
ResolveSupport llmnr;
ResolveSupport mdns;
DnssecMode dnssec_mode;
DnsOverTlsMode dns_over_tls_mode;
Set *dnssec_negative_trust_anchors;
char **ntp;
} Link;
typedef int (*link_netlink_message_handler_t)(sd_netlink*, sd_netlink_message*, Link*);
DUID *link_get_duid(Link *link);
int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error);
void link_ntp_settings_clear(Link *link);
void link_dns_settings_clear(Link *link);
Link *link_unref(Link *link);
Link *link_ref(Link *link);
DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
DEFINE_TRIVIAL_DESTRUCTOR(link_netlink_destroy_callback, Link, link_unref);
int link_get(Manager *m, int ifindex, Link **ret);
int link_add(Manager *manager, sd_netlink_message *message, Link **ret);
void link_drop(Link *link);
int link_down(Link *link, link_netlink_message_handler_t callback);
void link_enter_failed(Link *link);
int link_initialized(Link *link, sd_device *device);
void link_set_state(Link *link, LinkState state);
void link_check_ready(Link *link);
void link_update_operstate(Link *link, bool also_update_bond_master);
int link_update(Link *link, sd_netlink_message *message);
void link_dirty(Link *link);
void link_clean(Link *link);
int link_save(Link *link);
int link_carrier_reset(Link *link);
bool link_has_carrier(Link *link);
int link_ipv6ll_gained(Link *link, const struct in6_addr *address);
int link_set_mtu(Link *link, uint32_t mtu);
bool link_ipv4ll_enabled(Link *link, AddressFamily mask);
int link_stop_clients(Link *link, bool may_keep_dhcp);
const char* link_state_to_string(LinkState s) _const_;
LinkState link_state_from_string(const char *s) _pure_;
uint32_t link_get_vrf_table(Link *link);
uint32_t link_get_dhcp_route_table(Link *link);
uint32_t link_get_ipv6_accept_ra_route_table(Link *link);
int link_request_set_routes(Link *link);
int link_request_set_nexthop(Link *link);
#define ADDRESS_FMT_VAL(address) \
be32toh((address).s_addr) >> 24, \
(be32toh((address).s_addr) >> 16) & 0xFFu, \
(be32toh((address).s_addr) >> 8) & 0xFFu, \
be32toh((address).s_addr) & 0xFFu
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