src/network/networkd-network.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include <linux/nl80211.h>
   5
   6 #include "sd-bus.h"
   7 #include "sd-device.h"
   8 #include "sd-lldp-tx.h"
   9
  10 #include "bridge.h"
  11 #include "condition.h"
  12 #include "conf-parser.h"
  13 #include "firewall-util.h"
  14 #include "hashmap.h"
  15 #include "ipoib.h"
  16 #include "net-condition.h"
  17 #include "netdev.h"
  18 #include "networkd-address.h"
  19 #include "networkd-bridge-vlan.h"
  20 #include "networkd-dhcp-common.h"
  21 #include "networkd-dhcp4.h"
  22 #include "networkd-dhcp6.h"
  23 #include "networkd-dns.h"
  24 #include "networkd-ipv6ll.h"
  25 #include "networkd-lldp-rx.h"
  26 #include "networkd-ndisc.h"
  27 #include "networkd-radv.h"
  28 #include "networkd-sysctl.h"
  29 #include "networkd-util.h"
  30 #include "ordered-set.h"
  31 #include "resolve-util.h"
  32 #include "socket-netlink.h"
  33
  34 typedef enum KeepConfiguration {
  35         KEEP_CONFIGURATION_NO            = 0,
  36         KEEP_CONFIGURATION_DHCP_ON_START = 1 << 0,
  37         KEEP_CONFIGURATION_DHCP_ON_STOP  = 1 << 1,
  38         KEEP_CONFIGURATION_DHCP          = KEEP_CONFIGURATION_DHCP_ON_START | KEEP_CONFIGURATION_DHCP_ON_STOP,
  39         KEEP_CONFIGURATION_STATIC        = 1 << 2,
  40         KEEP_CONFIGURATION_YES           = KEEP_CONFIGURATION_DHCP | KEEP_CONFIGURATION_STATIC,
  41         _KEEP_CONFIGURATION_MAX,
  42         _KEEP_CONFIGURATION_INVALID = -EINVAL,
  43 } KeepConfiguration;
  44
  45 typedef enum ActivationPolicy {
  46         ACTIVATION_POLICY_UP,
  47         ACTIVATION_POLICY_ALWAYS_UP,
  48         ACTIVATION_POLICY_MANUAL,
  49         ACTIVATION_POLICY_ALWAYS_DOWN,
  50         ACTIVATION_POLICY_DOWN,
  51         ACTIVATION_POLICY_BOUND,
  52         _ACTIVATION_POLICY_MAX,
  53         _ACTIVATION_POLICY_INVALID = -EINVAL,
  54 } ActivationPolicy;
  55
  56 typedef struct Manager Manager;
  57
  58 typedef struct NetworkDHCPServerEmitAddress {
  59         bool emit;
  60         struct in_addr *addresses;
  61         size_t n_addresses;
  62 } NetworkDHCPServerEmitAddress;
  63
  64 struct Network {
  65         Manager *manager;
  66
  67         unsigned n_ref;
  68
  69         char *name;
  70         char *filename;
  71         char **dropins;
  72         Hashmap *stats_by_path;
  73         char *description;
  74
  75         /* [Match] section */
  76         NetMatch match;
  77         LIST_HEAD(Condition, conditions);
  78
  79         /* Master or stacked netdevs */
  80         bool keep_master;
  81         NetDev *batadv;
  82         NetDev *bridge;
  83         NetDev *bond;
  84         NetDev *vrf;
  85         NetDev *xfrm;
  86         Hashmap *stacked_netdevs;
  87         char *batadv_name;
  88         char *bridge_name;
  89         char *bond_name;
  90         char *vrf_name;
  91         Hashmap *stacked_netdev_names;
  92
  93         /* [Link] section */
  94         struct hw_addr_data hw_addr;
  95         uint32_t mtu;
  96         int32_t group;
  97         int arp;
  98         int multicast;
  99         int allmulticast;
 100         int promiscuous;
 101         bool unmanaged;
 102         int required_for_online; /* Is this network required to be considered online? */
 103         LinkOperationalStateRange required_operstate_for_online;
 104         AddressFamily required_family_for_online;
 105         ActivationPolicy activation_policy;
 106
 107         /* misc settings */
 108         bool configure_without_carrier;
 109         bool ignore_carrier_loss_set;
 110         usec_t ignore_carrier_loss_usec; /* timespan */
 111         KeepConfiguration keep_configuration;
 112         char **bind_carrier;
 113         bool default_route_on_device;
 114         AddressFamily ip_masquerade;
 115
 116         /* Protocol independent settings */
 117         UseDomains use_domains;
 118
 119         /* For backward compatibility, only applied to DHCPv4 and DHCPv6. */
 120         UseDomains compat_dhcp_use_domains;
 121         int compat_dhcp_use_dns;
 122         int compat_dhcp_use_ntp;
 123
 124         /* DHCP Client Support */
 125         AddressFamily dhcp;
 126         struct in_addr dhcp_request_address;
 127         DHCPClientIdentifier dhcp_client_identifier;
 128         DUID dhcp_duid;
 129         uint32_t dhcp_iaid;
 130         bool dhcp_iaid_set;
 131         char *dhcp_vendor_class_identifier;
 132         char *dhcp_mudurl;
 133         char **dhcp_user_class;
 134         char *dhcp_hostname;
 135         char *dhcp_label;
 136         uint64_t dhcp_max_attempts;
 137         uint32_t dhcp_route_metric;
 138         bool dhcp_route_metric_set;
 139         uint32_t dhcp_route_table;
 140         bool dhcp_route_table_set;
 141         usec_t dhcp_fallback_lease_lifetime_usec;
 142         uint32_t dhcp_route_mtu;
 143         uint16_t dhcp_client_port;
 144         uint16_t dhcp_port;
 145         int dhcp_critical;
 146         int dhcp_ip_service_type;
 147         int dhcp_socket_priority;
 148         bool dhcp_socket_priority_set;
 149         bool dhcp_anonymize;
 150         bool dhcp_send_hostname;
 151         bool dhcp_send_hostname_set;
 152         int dhcp_broadcast;
 153         int dhcp_ipv6_only_mode;
 154         int dhcp_use_rapid_commit;
 155         int dhcp_use_dns;
 156         bool dhcp_routes_to_dns;
 157         int dhcp_use_ntp;
 158         bool dhcp_routes_to_ntp;
 159         bool dhcp_use_sip;
 160         bool dhcp_use_captive_portal;
 161         bool dhcp_use_mtu;
 162         bool dhcp_use_routes;
 163         int dhcp_use_gateway;
 164         bool dhcp_quickack;
 165         uint32_t dhcp_initial_congestion_window;
 166         uint32_t dhcp_advertised_receive_window;
 167         bool dhcp_use_timezone;
 168         bool dhcp_use_hostname;
 169         bool dhcp_use_6rd;
 170         bool dhcp_send_release;
 171         bool dhcp_send_decline;
 172         UseDomains dhcp_use_domains;
 173         Set *dhcp_deny_listed_ip;
 174         Set *dhcp_allow_listed_ip;
 175         Set *dhcp_request_options;
 176         OrderedHashmap *dhcp_client_send_options;
 177         OrderedHashmap *dhcp_client_send_vendor_options;
 178         char *dhcp_netlabel;
 179         NFTSetContext dhcp_nft_set_context;
 180
 181         /* DHCPv6 Client support */
 182         bool dhcp6_use_address;
 183         bool dhcp6_use_pd_prefix;
 184         bool dhcp6_send_hostname;
 185         bool dhcp6_send_hostname_set;
 186         int dhcp6_use_dns;
 187         bool dhcp6_use_hostname;
 188         int dhcp6_use_ntp;
 189         bool dhcp6_use_captive_portal;
 190         bool dhcp6_use_rapid_commit;
 191         UseDomains dhcp6_use_domains;
 192         uint32_t dhcp6_iaid;
 193         bool dhcp6_iaid_set;
 194         bool dhcp6_iaid_set_explicitly;
 195         DUID dhcp6_duid;
 196         uint8_t dhcp6_pd_prefix_length;
 197         struct in6_addr dhcp6_pd_prefix_hint;
 198         char *dhcp6_hostname;
 199         char *dhcp6_mudurl;
 200         char **dhcp6_user_class;
 201         char **dhcp6_vendor_class;
 202         DHCP6ClientStartMode dhcp6_client_start_mode;
 203         OrderedHashmap *dhcp6_client_send_options;
 204         OrderedHashmap *dhcp6_client_send_vendor_options;
 205         Set *dhcp6_request_options;
 206         char *dhcp6_netlabel;
 207         bool dhcp6_send_release;
 208         NFTSetContext dhcp6_nft_set_context;
 209
 210         /* DHCP Server Support */
 211         bool dhcp_server;
 212         bool dhcp_server_bind_to_interface;
 213         unsigned char dhcp_server_address_prefixlen;
 214         struct in_addr dhcp_server_address_in_addr;
 215         const Address *dhcp_server_address;
 216         int dhcp_server_uplink_index;
 217         char *dhcp_server_uplink_name;
 218         struct in_addr dhcp_server_relay_target;
 219         char *dhcp_server_relay_agent_circuit_id;
 220         char *dhcp_server_relay_agent_remote_id;
 221         NetworkDHCPServerEmitAddress dhcp_server_emit[_SD_DHCP_LEASE_SERVER_TYPE_MAX];
 222         bool dhcp_server_emit_router;
 223         struct in_addr dhcp_server_router;
 224         bool dhcp_server_emit_timezone;
 225         char *dhcp_server_timezone;
 226         usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
 227         uint32_t dhcp_server_pool_offset;
 228         uint32_t dhcp_server_pool_size;
 229         OrderedHashmap *dhcp_server_send_options;
 230         OrderedHashmap *dhcp_server_send_vendor_options;
 231         struct in_addr dhcp_server_boot_server_address;
 232         char *dhcp_server_boot_server_name;
 233         char *dhcp_server_boot_filename;
 234         usec_t dhcp_server_ipv6_only_preferred_usec;
 235         bool dhcp_server_rapid_commit;
 236         int dhcp_server_persist_leases;
 237
 238         /* link-local addressing support */
 239         AddressFamily link_local;
 240         IPv6LinkLocalAddressGenMode ipv6ll_address_gen_mode;
 241         struct in6_addr ipv6ll_stable_secret;
 242         struct in_addr ipv4ll_start_address;
 243         bool ipv4ll_route;
 244
 245         /* IPv6 RA support */
 246         RADVPrefixDelegation router_prefix_delegation;
 247         usec_t router_lifetime_usec;
 248         uint8_t router_preference;
 249         usec_t router_reachable_usec;
 250         usec_t router_retransmit_usec;
 251         uint8_t router_hop_limit;
 252         bool router_managed;
 253         bool router_other_information;
 254         bool router_emit_dns;
 255         bool router_emit_domains;
 256         usec_t router_dns_lifetime_usec;
 257         struct in6_addr *router_dns;
 258         unsigned n_router_dns;
 259         OrderedSet *router_search_domains;
 260         int router_uplink_index;
 261         char *router_uplink_name;
 262         /* Mobile IPv6 Home Agent */
 263         bool router_home_agent_information;
 264         uint16_t router_home_agent_preference;
 265         usec_t home_agent_lifetime_usec;
 266
 267         /* DHCP Prefix Delegation support */
 268         int dhcp_pd;
 269         bool dhcp_pd_announce;
 270         bool dhcp_pd_assign;
 271         bool dhcp_pd_manage_temporary_address;
 272         int64_t dhcp_pd_subnet_id;
 273         uint32_t dhcp_pd_route_metric;
 274         Set *dhcp_pd_tokens;
 275         int dhcp_pd_uplink_index;
 276         char *dhcp_pd_uplink_name;
 277         char *dhcp_pd_netlabel;
 278         NFTSetContext dhcp_pd_nft_set_context;
 279
 280         /* Bridge Support */
 281         int use_bpdu;
 282         int hairpin;
 283         int isolated;
 284         int fast_leave;
 285         int allow_port_to_be_root;
 286         int unicast_flood;
 287         int multicast_flood;
 288         int multicast_to_unicast;
 289         int neighbor_suppression;
 290         int learning;
 291         int bridge_proxy_arp;
 292         int bridge_proxy_arp_wifi;
 293         uint32_t cost;
 294         uint16_t priority;
 295         MulticastRouter multicast_router;
 296
 297         /* Bridge VLAN */
 298         uint16_t bridge_vlan_pvid;
 299         uint32_t bridge_vlan_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 300         uint32_t bridge_vlan_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 301
 302         /* CAN support */
 303         uint32_t can_bitrate;
 304         unsigned can_sample_point;
 305         nsec_t can_time_quanta_ns;
 306         uint32_t can_propagation_segment;
 307         uint32_t can_phase_buffer_segment_1;
 308         uint32_t can_phase_buffer_segment_2;
 309         uint32_t can_sync_jump_width;
 310         uint32_t can_data_bitrate;
 311         unsigned can_data_sample_point;
 312         nsec_t can_data_time_quanta_ns;
 313         uint32_t can_data_propagation_segment;
 314         uint32_t can_data_phase_buffer_segment_1;
 315         uint32_t can_data_phase_buffer_segment_2;
 316         uint32_t can_data_sync_jump_width;
 317         usec_t can_restart_us;
 318         uint32_t can_control_mode_mask;
 319         uint32_t can_control_mode_flags;
 320         uint16_t can_termination;
 321         bool can_termination_set;
 322
 323         /* IPoIB support */
 324         IPoIBMode ipoib_mode;
 325         int ipoib_umcast;
 326
 327         /* sysctl settings */
 328         int ip_forwarding[2];
 329         int ipv4_accept_local;
 330         int ipv4_route_localnet;
 331         int ipv6_dad_transmits;
 332         uint8_t ipv6_hop_limit;
 333         usec_t ipv6_retransmission_time;
 334         int proxy_arp;
 335         int proxy_arp_pvlan;
 336         uint32_t ipv6_mtu;
 337         IPv6PrivacyExtensions ipv6_privacy_extensions;
 338         IPReversePathFilter ipv4_rp_filter;
 339         int ipv6_proxy_ndp;
 340         Set *ipv6_proxy_ndp_addresses;
 341
 342         /* NDisc support */
 343         int ndisc;
 344         bool ndisc_use_redirect;
 345         int ndisc_use_dns;
 346         bool ndisc_use_gateway;
 347         bool ndisc_use_route_prefix;
 348         bool ndisc_use_autonomous_prefix;
 349         bool ndisc_use_onlink_prefix;
 350         bool ndisc_use_mtu;
 351         bool ndisc_use_hop_limit;
 352         bool ndisc_use_reachable_time;
 353         bool ndisc_use_retransmission_time;
 354         bool ndisc_quickack;
 355         bool ndisc_use_captive_portal;
 356         bool ndisc_use_pref64;
 357         bool active_slave;
 358         bool primary_slave;
 359         UseDomains ndisc_use_domains;
 360         IPv6AcceptRAStartDHCP6Client ndisc_start_dhcp6_client;
 361         uint32_t ndisc_route_table;
 362         bool ndisc_route_table_set;
 363         uint32_t ndisc_route_metric_high;
 364         uint32_t ndisc_route_metric_medium;
 365         uint32_t ndisc_route_metric_low;
 366         bool ndisc_route_metric_set;
 367         Set *ndisc_deny_listed_router;
 368         Set *ndisc_allow_listed_router;
 369         Set *ndisc_deny_listed_prefix;
 370         Set *ndisc_allow_listed_prefix;
 371         Set *ndisc_deny_listed_route_prefix;
 372         Set *ndisc_allow_listed_route_prefix;
 373         Set *ndisc_tokens;
 374         char *ndisc_netlabel;
 375         NFTSetContext ndisc_nft_set_context;
 376
 377         /* LLDP support */
 378         LLDPMode lldp_mode; /* LLDP reception */
 379         sd_lldp_multicast_mode_t lldp_multicast_mode; /* LLDP transmission */
 380         char *lldp_mudurl;  /* LLDP MUD URL */
 381
 382         OrderedHashmap *addresses_by_section;
 383         Hashmap *routes_by_section;
 384         OrderedHashmap *nexthops_by_section;
 385         Hashmap *bridge_fdb_entries_by_section;
 386         Hashmap *bridge_mdb_entries_by_section;
 387         OrderedHashmap *neighbors_by_section;
 388         Hashmap *address_labels_by_section;
 389         Hashmap *prefixes_by_section;
 390         Hashmap *route_prefixes_by_section;
 391         Hashmap *pref64_prefixes_by_section;
 392         Hashmap *rules_by_section;
 393         Hashmap *dhcp_static_leases_by_section;
 394         Hashmap *qdiscs_by_section;
 395         Hashmap *tclasses_by_section;
 396         OrderedHashmap *sr_iov_by_section;
 397
 398         /* All kinds of DNS configuration */
 399         struct in_addr_full **dns;
 400         unsigned n_dns;
 401         OrderedSet *search_domains, *route_domains;
 402         int dns_default_route;
 403         ResolveSupport llmnr;
 404         ResolveSupport mdns;
 405         DnssecMode dnssec_mode;
 406         DnsOverTlsMode dns_over_tls_mode;
 407         Set *dnssec_negative_trust_anchors;
 408
 409         /* NTP */
 410         char **ntp;
 411 };
 412
 413 Network *network_ref(Network *network);
 414 Network *network_unref(Network *network);
 415 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_unref);
 416
 417 int network_load(Manager *manager, OrderedHashmap **networks);
 418 int network_reload(Manager *manager);
 419 int network_load_one(Manager *manager, OrderedHashmap **networks, const char *filename);
 420 int network_verify(Network *network);
 421
 422 int manager_build_dhcp_pd_subnet_ids(Manager *manager);
 423
 424 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 425 void network_apply_anonymize_if_set(Network *network);
 426
 427 bool network_has_static_ipv6_configurations(Network *network);
 428
 429 CONFIG_PARSER_PROTOTYPE(config_parse_stacked_netdev);
 430 CONFIG_PARSER_PROTOTYPE(config_parse_tunnel);
 431 CONFIG_PARSER_PROTOTYPE(config_parse_required_for_online);
 432 CONFIG_PARSER_PROTOTYPE(config_parse_required_family_for_online);
 433 CONFIG_PARSER_PROTOTYPE(config_parse_keep_configuration);
 434 CONFIG_PARSER_PROTOTYPE(config_parse_activation_policy);
 435 CONFIG_PARSER_PROTOTYPE(config_parse_link_group);
 436 CONFIG_PARSER_PROTOTYPE(config_parse_ignore_carrier_loss);
 437
 438 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
 439
 440 const char* keep_configuration_to_string(KeepConfiguration i) _const_;
 441 KeepConfiguration keep_configuration_from_string(const char *s) _pure_;
 442
 443 const char* activation_policy_to_string(ActivationPolicy i) _const_;
 444 ActivationPolicy activation_policy_from_string(const char *s) _pure_;