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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <endian.h>
#include <linux/nl80211.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-ipv4acd.h"
#include "sd-ipv4ll.h"
#include "sd-lldp-rx.h"
#include "sd-lldp-tx.h"
#include "sd-ndisc.h"
#include "sd-radv.h"
#include "sd-netlink.h"
#include "ether-addr-util.h"
#include "log-link.h"
#include "netif-util.h"
#include "network-util.h"
#include "networkd-bridge-vlan.h"
#include "networkd-ipv6ll.h"
#include "networkd-util.h"
#include "ordered-set.h"
#include "ratelimit.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 = -EINVAL,
} LinkState;
typedef struct Manager Manager;
typedef struct Network Network;
typedef struct NetDev NetDev;
typedef struct DUID DUID;
typedef struct Link {
Manager *manager;
unsigned n_ref;
int ifindex;
int master_ifindex;
int dsa_master_ifindex;
int sr_iov_phys_port_ifindex;
Set *sr_iov_virt_port_ifindices;
char *ifname;
char **alternative_names;
char *kind;
unsigned short iftype;
char *state_file;
struct hw_addr_data hw_addr;
struct hw_addr_data bcast_addr;
struct hw_addr_data permanent_hw_addr;
struct hw_addr_data requested_hw_addr;
struct in6_addr ipv6ll_address;
uint32_t mtu;
uint32_t min_mtu;
uint32_t max_mtu;
uint32_t original_mtu;
sd_device *dev;
char *driver;
sd_event_source *ipv6_mtu_wait_synced_event_source;
unsigned ipv6_mtu_wait_trial_count;
/* bridge vlan */
uint16_t bridge_vlan_pvid;
bool bridge_vlan_pvid_is_untagged;
uint32_t bridge_vlan_bitmap[BRIDGE_VLAN_BITMAP_LEN];
/* to prevent multiple ethtool calls */
bool ethtool_driver_read;
bool ethtool_permanent_hw_addr_read;
/* link-local addressing */
IPv6LinkLocalAddressGenMode ipv6ll_address_gen_mode;
/* wlan */
enum nl80211_iftype wlan_iftype;
char *ssid;
char *previous_ssid;
struct ether_addr bssid;
unsigned flags;
uint8_t kernel_operstate;
sd_event_source *carrier_lost_timer;
Network *network;
NetDev *netdev;
LinkState state;
LinkOperationalState operstate;
LinkCarrierState carrier_state;
LinkAddressState address_state;
LinkAddressState ipv4_address_state;
LinkAddressState ipv6_address_state;
LinkOnlineState online_state;
RateLimit automatic_reconfigure_ratelimit;
unsigned static_address_messages;
unsigned static_address_label_messages;
unsigned static_bridge_fdb_messages;
unsigned static_bridge_mdb_messages;
unsigned static_ipv6_proxy_ndp_messages;
unsigned static_neighbor_messages;
unsigned static_nexthop_messages;
unsigned static_route_messages;
unsigned static_routing_policy_rule_messages;
unsigned tc_messages;
unsigned sr_iov_messages;
unsigned set_link_messages;
unsigned set_flags_messages;
unsigned create_stacked_netdev_messages;
Set *addresses;
Set *neighbors;
Set *qdiscs;
Set *tclasses;
sd_dhcp_client *dhcp_client;
sd_dhcp_lease *dhcp_lease;
char *lease_file;
unsigned dhcp4_messages;
bool dhcp4_configured;
char *dhcp4_6rd_tunnel_name;
Hashmap *ipv4acd_by_address;
sd_ipv4ll *ipv4ll;
bool ipv4ll_address_configured:1;
bool static_addresses_configured:1;
bool static_address_labels_configured:1;
bool static_bridge_fdb_configured:1;
bool static_bridge_mdb_configured:1;
bool static_ipv6_proxy_ndp_configured:1;
bool static_neighbors_configured:1;
bool static_nexthops_configured:1;
bool static_routes_configured:1;
bool static_routing_policy_rules_configured:1;
bool tc_configured:1;
bool sr_iov_configured:1;
bool activated:1;
bool master_set:1;
bool stacked_netdevs_created:1;
bool bridge_vlan_set:1;
sd_dhcp_server *dhcp_server;
sd_ndisc *ndisc;
sd_event_source *ndisc_expire;
Hashmap *ndisc_routers_by_sender;
Set *ndisc_rdnss;
Set *ndisc_dnssl;
Set *ndisc_captive_portals;
Set *ndisc_pref64;
Set *ndisc_redirects;
uint32_t ndisc_mtu;
unsigned ndisc_messages;
bool ndisc_configured:1;
sd_radv *radv;
sd_dhcp6_client *dhcp6_client;
sd_dhcp6_lease *dhcp6_lease;
unsigned dhcp6_messages;
bool dhcp6_configured;
Set *dhcp_pd_prefixes;
unsigned dhcp_pd_messages;
bool dhcp_pd_configured;
/* This is about LLDP reception */
sd_lldp_rx *lldp_rx;
/* This is about LLDP transmission */
sd_lldp_tx *lldp_tx;
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 the user configured via D-Bus */
struct in_addr_full **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;
/* Similar, but NTP server configuration */
char **ntp;
} Link;
typedef int (*link_netlink_message_handler_t)(sd_netlink*, sd_netlink_message*, Link*);
bool link_is_ready_to_configure(Link *link, bool allow_unmanaged);
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_by_index(Manager *m, int ifindex, Link **ret);
int link_get_by_name(Manager *m, const char *ifname, Link **ret);
int link_get_by_hw_addr(Manager *m, const struct hw_addr_data *hw_addr, Link **ret);
int link_get_master(Link *link, Link **ret);
int link_getlink_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, const char *error_msg);
int link_call_getlink(Link *link, link_netlink_message_handler_t callback);
int link_handle_bound_to_list(Link *link);
void link_enter_failed(Link *link);
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);
static inline bool link_has_carrier(Link *link) {
assert(link);
return netif_has_carrier(link->kernel_operstate, link->flags);
}
bool link_ipv6_enabled(Link *link);
int link_ipv6ll_gained(Link *link);
bool link_has_ipv6_connectivity(Link *link);
int link_stop_engines(Link *link, bool may_keep_dhcp);
const char* link_state_to_string(LinkState s) _const_;
LinkState link_state_from_string(const char *s) _pure_;
int link_reconfigure_impl(Link *link, bool force);
int link_reconfigure(Link *link, bool force);
int link_reconfigure_on_bus_method_reload(Link *link, sd_bus_message *message);
int manager_udev_process_link(Manager *m, sd_device *device, sd_device_action_t action);
int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, Manager *m);
int link_flags_to_string_alloc(uint32_t flags, char **ret);
const char* kernel_operstate_to_string(int t) _const_;
void link_required_operstate_for_online(Link *link, LinkOperationalStateRange *ret);
AddressFamily link_required_family_for_online(Link *link);
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