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
   9 #include "bridge.h"
  10 #include "condition.h"
  11 #include "conf-parser.h"
  12 #include "hashmap.h"
  13 #include "net-condition.h"
  14 #include "netdev.h"
  15 #include "networkd-bridge-vlan.h"
  16 #include "networkd-dhcp-common.h"
  17 #include "networkd-dhcp4.h"
  18 #include "networkd-dhcp6.h"
  19 #include "networkd-lldp-rx.h"
  20 #include "networkd-lldp-tx.h"
  21 #include "networkd-ndisc.h"
  22 #include "networkd-radv.h"
  23 #include "networkd-sysctl.h"
  24 #include "networkd-util.h"
  25 #include "ordered-set.h"
  26 #include "resolve-util.h"
  27 #include "socket-netlink.h"
  28
  29 /* Special values for *_uplink_index. */
  30 #define UPLINK_INDEX_AUTO  0 /* uplink will be selected automatically */
  31 #define UPLINK_INDEX_NONE -1 /* uplink will not be selected automatically */
  32
  33 typedef enum KeepConfiguration {
  34         KEEP_CONFIGURATION_NO            = 0,
  35         KEEP_CONFIGURATION_DHCP_ON_START = 1 << 0,
  36         KEEP_CONFIGURATION_DHCP_ON_STOP  = 1 << 1,
  37         KEEP_CONFIGURATION_DHCP          = KEEP_CONFIGURATION_DHCP_ON_START | KEEP_CONFIGURATION_DHCP_ON_STOP,
  38         KEEP_CONFIGURATION_STATIC        = 1 << 2,
  39         KEEP_CONFIGURATION_YES           = KEEP_CONFIGURATION_DHCP | KEEP_CONFIGURATION_STATIC,
  40         _KEEP_CONFIGURATION_MAX,
  41         _KEEP_CONFIGURATION_INVALID = -EINVAL,
  42 } KeepConfiguration;
  43
  44 typedef enum IPv6LinkLocalAddressGenMode {
  45        IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_EUI64          = IN6_ADDR_GEN_MODE_EUI64,
  46        IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_NONE           = IN6_ADDR_GEN_MODE_NONE,
  47        IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_STABLE_PRIVACY = IN6_ADDR_GEN_MODE_STABLE_PRIVACY,
  48        IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_RANDOM         = IN6_ADDR_GEN_MODE_RANDOM,
  49        _IPV6_LINK_LOCAL_ADDRESS_GEN_MODE_MAX,
  50        _IPV6_LINK_LOCAL_ADDRESS_GEN_MODE_INVALID        = -EINVAL,
  51 } IPv6LinkLocalAddressGenMode;
  52
  53 typedef enum ActivationPolicy {
  54         ACTIVATION_POLICY_UP,
  55         ACTIVATION_POLICY_ALWAYS_UP,
  56         ACTIVATION_POLICY_MANUAL,
  57         ACTIVATION_POLICY_ALWAYS_DOWN,
  58         ACTIVATION_POLICY_DOWN,
  59         ACTIVATION_POLICY_BOUND,
  60         _ACTIVATION_POLICY_MAX,
  61         _ACTIVATION_POLICY_INVALID = -EINVAL,
  62 } ActivationPolicy;
  63
  64 typedef struct Manager Manager;
  65
  66 typedef struct NetworkDHCPServerEmitAddress {
  67         bool emit;
  68         struct in_addr *addresses;
  69         size_t n_addresses;
  70 } NetworkDHCPServerEmitAddress;
  71
  72 struct Network {
  73         Manager *manager;
  74
  75         unsigned n_ref;
  76
  77         char *name;
  78         char *filename;
  79         usec_t timestamp;
  80         char *description;
  81
  82         /* [Match] section */
  83         NetMatch match;
  84         LIST_HEAD(Condition, conditions);
  85
  86         /* Master or stacked netdevs */
  87         NetDev *batadv;
  88         NetDev *bridge;
  89         NetDev *bond;
  90         NetDev *vrf;
  91         NetDev *xfrm;
  92         Hashmap *stacked_netdevs;
  93         char *batadv_name;
  94         char *bridge_name;
  95         char *bond_name;
  96         char *vrf_name;
  97         Hashmap *stacked_netdev_names;
  98
  99         /* [Link] section */
 100         struct ether_addr *mac;
 101         uint32_t mtu;
 102         uint32_t group;
 103         bool group_set;
 104         int arp;
 105         int multicast;
 106         int allmulticast;
 107         int promiscuous;
 108         bool unmanaged;
 109         int required_for_online; /* Is this network required to be considered online? */
 110         LinkOperationalStateRange required_operstate_for_online;
 111         AddressFamily required_family_for_online;
 112         ActivationPolicy activation_policy;
 113
 114         /* misc settings */
 115         bool configure_without_carrier;
 116         int ignore_carrier_loss;
 117         KeepConfiguration keep_configuration;
 118         char **bind_carrier;
 119         bool default_route_on_device;
 120         AddressFamily ip_masquerade;
 121
 122         /* DHCP Client Support */
 123         AddressFamily dhcp;
 124         DHCPClientIdentifier dhcp_client_identifier;
 125         DUID dhcp_duid;
 126         uint32_t dhcp_iaid;
 127         bool dhcp_iaid_set;
 128         char *dhcp_vendor_class_identifier;
 129         char *dhcp_mudurl;
 130         char **dhcp_user_class;
 131         char *dhcp_hostname;
 132         uint64_t dhcp_max_attempts;
 133         uint32_t dhcp_route_metric;
 134         bool dhcp_route_metric_set;
 135         uint32_t dhcp_route_table;
 136         uint32_t dhcp_fallback_lease_lifetime;
 137         uint32_t dhcp_route_mtu;
 138         uint16_t dhcp_client_port;
 139         int dhcp_critical;
 140         int dhcp_ip_service_type;
 141         bool dhcp_anonymize;
 142         bool dhcp_send_hostname;
 143         int dhcp_broadcast;
 144         bool dhcp_use_dns;
 145         bool dhcp_use_dns_set;
 146         bool dhcp_routes_to_dns;
 147         bool dhcp_use_ntp;
 148         bool dhcp_use_ntp_set;
 149         bool dhcp_routes_to_ntp;
 150         bool dhcp_use_sip;
 151         bool dhcp_use_mtu;
 152         bool dhcp_use_routes;
 153         int dhcp_use_gateway;
 154         bool dhcp_use_timezone;
 155         bool dhcp_use_hostname;
 156         bool dhcp_route_table_set;
 157         bool dhcp_send_release;
 158         bool dhcp_send_decline;
 159         DHCPUseDomains dhcp_use_domains;
 160         bool dhcp_use_domains_set;
 161         Set *dhcp_deny_listed_ip;
 162         Set *dhcp_allow_listed_ip;
 163         Set *dhcp_request_options;
 164         OrderedHashmap *dhcp_client_send_options;
 165         OrderedHashmap *dhcp_client_send_vendor_options;
 166
 167         /* DHCPv6 Client support */
 168         bool dhcp6_use_address;
 169         bool dhcp6_use_dns;
 170         bool dhcp6_use_dns_set;
 171         bool dhcp6_use_hostname;
 172         bool dhcp6_use_ntp;
 173         bool dhcp6_use_ntp_set;
 174         bool dhcp6_rapid_commit;
 175         DHCPUseDomains dhcp6_use_domains;
 176         bool dhcp6_use_domains_set;
 177         uint32_t dhcp6_iaid;
 178         bool dhcp6_iaid_set;
 179         bool dhcp6_iaid_set_explicitly;
 180         DUID dhcp6_duid;
 181         uint8_t dhcp6_pd_length;
 182         char *dhcp6_mudurl;
 183         char **dhcp6_user_class;
 184         char **dhcp6_vendor_class;
 185         struct in6_addr dhcp6_pd_address;
 186         DHCP6ClientStartMode dhcp6_without_ra;
 187         OrderedHashmap *dhcp6_client_send_options;
 188         OrderedHashmap *dhcp6_client_send_vendor_options;
 189         Set *dhcp6_request_options;
 190         /* Start DHCPv6 PD also when 'O' RA flag is set, see RFC 7084, WPD-4 */
 191         bool dhcp6_force_pd_other_information;
 192
 193         /* DHCP Server Support */
 194         bool dhcp_server;
 195         bool dhcp_server_bind_to_interface;
 196         unsigned char dhcp_server_address_prefixlen;
 197         struct in_addr dhcp_server_address;
 198         int dhcp_server_uplink_index;
 199         char *dhcp_server_uplink_name;
 200         struct in_addr dhcp_server_relay_target;
 201         char *dhcp_server_relay_agent_circuit_id;
 202         char *dhcp_server_relay_agent_remote_id;
 203         NetworkDHCPServerEmitAddress dhcp_server_emit[_SD_DHCP_LEASE_SERVER_TYPE_MAX];
 204         bool dhcp_server_emit_router;
 205         bool dhcp_server_emit_timezone;
 206         char *dhcp_server_timezone;
 207         usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
 208         uint32_t dhcp_server_pool_offset;
 209         uint32_t dhcp_server_pool_size;
 210         OrderedHashmap *dhcp_server_send_options;
 211         OrderedHashmap *dhcp_server_send_vendor_options;
 212
 213         /* link local addressing support */
 214         AddressFamily link_local;
 215         IPv6LinkLocalAddressGenMode ipv6ll_address_gen_mode;
 216         struct in6_addr ipv6ll_stable_secret;
 217         bool ipv4ll_route;
 218
 219         /* IPv6 RA support */
 220         RADVPrefixDelegation router_prefix_delegation;
 221         usec_t router_lifetime_usec;
 222         uint8_t router_preference;
 223         bool router_managed;
 224         bool router_other_information;
 225         bool router_emit_dns;
 226         bool router_emit_domains;
 227         usec_t router_dns_lifetime_usec;
 228         struct in6_addr *router_dns;
 229         unsigned n_router_dns;
 230         OrderedSet *router_search_domains;
 231         int router_uplink_index;
 232         char *router_uplink_name;
 233
 234         /* DHCPv6 Prefix Delegation support */
 235         int dhcp6_pd;
 236         bool dhcp6_pd_announce;
 237         bool dhcp6_pd_assign;
 238         bool dhcp6_pd_manage_temporary_address;
 239         int64_t dhcp6_pd_subnet_id;
 240         uint32_t dhcp6_pd_route_metric;
 241         struct in6_addr dhcp6_pd_token;
 242
 243         /* Bridge Support */
 244         int use_bpdu;
 245         int hairpin;
 246         int fast_leave;
 247         int allow_port_to_be_root;
 248         int unicast_flood;
 249         int multicast_flood;
 250         int multicast_to_unicast;
 251         int neighbor_suppression;
 252         int learning;
 253         int bridge_proxy_arp;
 254         int bridge_proxy_arp_wifi;
 255         uint32_t cost;
 256         uint16_t priority;
 257         MulticastRouter multicast_router;
 258
 259         /* Bridge VLAN */
 260         bool use_br_vlan;
 261         uint16_t pvid;
 262         uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 263         uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 264
 265         /* CAN support */
 266         uint32_t can_bitrate;
 267         unsigned can_sample_point;
 268         nsec_t can_time_quanta_ns;
 269         uint32_t can_propagation_segment;
 270         uint32_t can_phase_buffer_segment_1;
 271         uint32_t can_phase_buffer_segment_2;
 272         uint32_t can_sync_jump_width;
 273         uint32_t can_data_bitrate;
 274         unsigned can_data_sample_point;
 275         nsec_t can_data_time_quanta_ns;
 276         uint32_t can_data_propagation_segment;
 277         uint32_t can_data_phase_buffer_segment_1;
 278         uint32_t can_data_phase_buffer_segment_2;
 279         uint32_t can_data_sync_jump_width;
 280         usec_t can_restart_us;
 281         uint32_t can_control_mode_mask;
 282         uint32_t can_control_mode_flags;
 283         uint16_t can_termination;
 284         bool can_termination_set;
 285
 286         /* sysctl settings */
 287         AddressFamily ip_forward;
 288         int ipv4_accept_local;
 289         int ipv4_route_localnet;
 290         int ipv6_dad_transmits;
 291         int ipv6_hop_limit;
 292         int proxy_arp;
 293         uint32_t ipv6_mtu;
 294         IPv6PrivacyExtensions ipv6_privacy_extensions;
 295         int ipv6_proxy_ndp;
 296         Set *ipv6_proxy_ndp_addresses;
 297
 298         /* IPv6 accept RA */
 299         int ipv6_accept_ra;
 300         bool ipv6_accept_ra_use_dns;
 301         bool ipv6_accept_ra_use_autonomous_prefix;
 302         bool ipv6_accept_ra_use_onlink_prefix;
 303         bool active_slave;
 304         bool primary_slave;
 305         DHCPUseDomains ipv6_accept_ra_use_domains;
 306         IPv6AcceptRAStartDHCP6Client ipv6_accept_ra_start_dhcp6_client;
 307         uint32_t ipv6_accept_ra_route_table;
 308         bool ipv6_accept_ra_route_table_set;
 309         uint32_t ipv6_accept_ra_route_metric;
 310         bool ipv6_accept_ra_route_metric_set;
 311         Set *ndisc_deny_listed_router;
 312         Set *ndisc_allow_listed_router;
 313         Set *ndisc_deny_listed_prefix;
 314         Set *ndisc_allow_listed_prefix;
 315         Set *ndisc_deny_listed_route_prefix;
 316         Set *ndisc_allow_listed_route_prefix;
 317         OrderedSet *ipv6_tokens;
 318
 319         /* LLDP support */
 320         LLDPMode lldp_mode; /* LLDP reception */
 321         LLDPEmit lldp_emit; /* LLDP transmission */
 322         char *lldp_mud;    /* LLDP MUD URL */
 323
 324         OrderedHashmap *addresses_by_section;
 325         Hashmap *routes_by_section;
 326         Hashmap *nexthops_by_section;
 327         Hashmap *bridge_fdb_entries_by_section;
 328         Hashmap *bridge_mdb_entries_by_section;
 329         Hashmap *neighbors_by_section;
 330         Hashmap *address_labels_by_section;
 331         Hashmap *prefixes_by_section;
 332         Hashmap *route_prefixes_by_section;
 333         Hashmap *rules_by_section;
 334         Hashmap *dhcp_static_leases_by_section;
 335         OrderedHashmap *tc_by_section;
 336         OrderedHashmap *sr_iov_by_section;
 337
 338         /* All kinds of DNS configuration */
 339         struct in_addr_full **dns;
 340         unsigned n_dns;
 341         OrderedSet *search_domains, *route_domains;
 342         int dns_default_route;
 343         ResolveSupport llmnr;
 344         ResolveSupport mdns;
 345         DnssecMode dnssec_mode;
 346         DnsOverTlsMode dns_over_tls_mode;
 347         Set *dnssec_negative_trust_anchors;
 348
 349         /* NTP */
 350         char **ntp;
 351 };
 352
 353 Network *network_ref(Network *network);
 354 Network *network_unref(Network *network);
 355 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_unref);
 356
 357 int network_load(Manager *manager, OrderedHashmap **networks);
 358 int network_reload(Manager *manager);
 359 int network_load_one(Manager *manager, OrderedHashmap **networks, const char *filename);
 360 int network_verify(Network *network);
 361
 362 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 363 void network_apply_anonymize_if_set(Network *network);
 364
 365 bool network_has_static_ipv6_configurations(Network *network);
 366
 367 CONFIG_PARSER_PROTOTYPE(config_parse_stacked_netdev);
 368 CONFIG_PARSER_PROTOTYPE(config_parse_tunnel);
 369 CONFIG_PARSER_PROTOTYPE(config_parse_domains);
 370 CONFIG_PARSER_PROTOTYPE(config_parse_dns);
 371 CONFIG_PARSER_PROTOTYPE(config_parse_hostname);
 372 CONFIG_PARSER_PROTOTYPE(config_parse_timezone);
 373 CONFIG_PARSER_PROTOTYPE(config_parse_dnssec_negative_trust_anchors);
 374 CONFIG_PARSER_PROTOTYPE(config_parse_ntp);
 375 CONFIG_PARSER_PROTOTYPE(config_parse_required_for_online);
 376 CONFIG_PARSER_PROTOTYPE(config_parse_required_family_for_online);
 377 CONFIG_PARSER_PROTOTYPE(config_parse_keep_configuration);
 378 CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_link_local_address_gen_mode);
 379 CONFIG_PARSER_PROTOTYPE(config_parse_activation_policy);
 380 CONFIG_PARSER_PROTOTYPE(config_parse_link_group);
 381 CONFIG_PARSER_PROTOTYPE(config_parse_uplink);
 382
 383 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
 384
 385 const char* keep_configuration_to_string(KeepConfiguration i) _const_;
 386 KeepConfiguration keep_configuration_from_string(const char *s) _pure_;
 387
 388 const char* ipv6_link_local_address_gen_mode_to_string(IPv6LinkLocalAddressGenMode s) _const_;
 389 IPv6LinkLocalAddressGenMode ipv6_link_local_address_gen_mode_from_string(const char *s) _pure_;
 390
 391 const char* activation_policy_to_string(ActivationPolicy i) _const_;
 392 ActivationPolicy activation_policy_from_string(const char *s) _pure_;