src/network/networkd-network.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include <linux/nl80211.h>
   5
   6 #include "sd-bus.h"
   7 #include "sd-device.h"
   8 #include "sd-ipv4acd.h"
   9
  10 #include "bridge.h"
  11 #include "condition.h"
  12 #include "conf-parser.h"
  13 #include "hashmap.h"
  14 #include "netdev.h"
  15 #include "networkd-address-label.h"
  16 #include "networkd-address.h"
  17 #include "networkd-brvlan.h"
  18 #include "networkd-dhcp-common.h"
  19 #include "networkd-dhcp4.h"
  20 #include "networkd-dhcp-server.h"
  21 #include "networkd-fdb.h"
  22 #include "networkd-ipv6-proxy-ndp.h"
  23 #include "networkd-lldp-rx.h"
  24 #include "networkd-lldp-tx.h"
  25 #include "networkd-ndisc.h"
  26 #include "networkd-neighbor.h"
  27 #include "networkd-nexthop.h"
  28 #include "networkd-radv.h"
  29 #include "networkd-route.h"
  30 #include "networkd-routing-policy-rule.h"
  31 #include "networkd-util.h"
  32 #include "ordered-set.h"
  33 #include "resolve-util.h"
  34
  35 typedef enum IPv6PrivacyExtensions {
  36         /* The values map to the kernel's /proc/sys/net/ipv6/conf/xxx/use_tempaddr values */
  37         IPV6_PRIVACY_EXTENSIONS_NO,
  38         IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC,
  39         IPV6_PRIVACY_EXTENSIONS_YES, /* aka prefer-temporary */
  40         _IPV6_PRIVACY_EXTENSIONS_MAX,
  41         _IPV6_PRIVACY_EXTENSIONS_INVALID = -1,
  42 } IPv6PrivacyExtensions;
  43
  44 typedef enum KeepConfiguration {
  45         KEEP_CONFIGURATION_NO            = 0,
  46         KEEP_CONFIGURATION_DHCP_ON_START = 1 << 0,
  47         KEEP_CONFIGURATION_DHCP_ON_STOP  = 1 << 1,
  48         KEEP_CONFIGURATION_DHCP          = KEEP_CONFIGURATION_DHCP_ON_START | KEEP_CONFIGURATION_DHCP_ON_STOP,
  49         KEEP_CONFIGURATION_STATIC        = 1 << 2,
  50         KEEP_CONFIGURATION_YES           = KEEP_CONFIGURATION_DHCP | KEEP_CONFIGURATION_STATIC,
  51         _KEEP_CONFIGURATION_MAX,
  52         _KEEP_CONFIGURATION_INVALID = -1,
  53 } KeepConfiguration;
  54
  55 typedef enum IPv6LinkLocalAddressGenMode {
  56        IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_EUI64          = IN6_ADDR_GEN_MODE_EUI64,
  57        IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_NONE           = IN6_ADDR_GEN_MODE_NONE,
  58        IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_STABLE_PRIVACY = IN6_ADDR_GEN_MODE_STABLE_PRIVACY,
  59        IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_RANDOM         = IN6_ADDR_GEN_MODE_RANDOM,
  60        _IPV6_LINK_LOCAL_ADDRESS_GEN_MODE_MAX,
  61        _IPV6_LINK_LOCAL_ADDRESS_GEN_MODE_INVALID        = -1
  62 } IPv6LinkLocalAddressGenMode;
  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         char *filename;
  76         char *name;
  77         usec_t timestamp;
  78
  79         unsigned n_ref;
  80
  81         Set *match_mac;
  82         Set *match_permanent_mac;
  83         char **match_path;
  84         char **match_driver;
  85         char **match_type;
  86         char **match_name;
  87         char **match_property;
  88         char **match_wlan_iftype;
  89         char **match_ssid;
  90         Set *match_bssid;
  91         LIST_HEAD(Condition, conditions);
  92
  93         char *description;
  94
  95         NetDev *bridge;
  96         NetDev *bond;
  97         NetDev *vrf;
  98         NetDev *xfrm;
  99         Hashmap *stacked_netdevs;
 100         char *bridge_name;
 101         char *bond_name;
 102         char *vrf_name;
 103         Hashmap *stacked_netdev_names;
 104
 105         /* DHCP Client Support */
 106         AddressFamily dhcp;
 107         DHCPClientIdentifier dhcp_client_identifier;
 108         char *dhcp_vendor_class_identifier;
 109         char *dhcp_mudurl;
 110         char **dhcp_user_class;
 111         char *dhcp_hostname;
 112         uint64_t dhcp_max_attempts;
 113         uint32_t dhcp_route_metric;
 114         bool dhcp_route_metric_set;
 115         uint32_t dhcp_route_table;
 116         uint32_t dhcp_fallback_lease_lifetime;
 117         uint32_t dhcp_route_mtu;
 118         uint16_t dhcp_client_port;
 119         int dhcp_critical;
 120         int ip_service_type;
 121         bool dhcp_anonymize;
 122         bool dhcp_send_hostname;
 123         bool dhcp_broadcast;
 124         bool dhcp_use_dns;
 125         bool dhcp_use_dns_set;
 126         bool dhcp_routes_to_dns;
 127         bool dhcp_use_ntp;
 128         bool dhcp_use_ntp_set;
 129         bool dhcp_use_sip;
 130         bool dhcp_use_mtu;
 131         bool dhcp_use_routes;
 132         int dhcp_use_gateway;
 133         bool dhcp_use_timezone;
 134         bool rapid_commit;
 135         bool dhcp_use_hostname;
 136         bool dhcp_route_table_set;
 137         bool dhcp_send_release;
 138         bool dhcp_send_decline;
 139         DHCPUseDomains dhcp_use_domains;
 140         sd_ipv4acd *dhcp_acd;
 141         Set *dhcp_deny_listed_ip;
 142         Set *dhcp_request_options;
 143         OrderedHashmap *dhcp_client_send_options;
 144         OrderedHashmap *dhcp_client_send_vendor_options;
 145         OrderedHashmap *dhcp_server_send_options;
 146         OrderedHashmap *dhcp_server_send_vendor_options;
 147
 148         /* DHCPv6 Client support*/
 149         bool dhcp6_use_dns;
 150         bool dhcp6_use_dns_set;
 151         bool dhcp6_use_ntp;
 152         bool dhcp6_use_ntp_set;
 153         bool dhcp6_without_ra;
 154         uint8_t dhcp6_pd_length;
 155         uint32_t dhcp6_route_metric;
 156         bool dhcp6_route_metric_set;
 157         char *dhcp6_mudurl;
 158         char **dhcp6_user_class;
 159         char **dhcp6_vendor_class;
 160         struct in6_addr dhcp6_pd_address;
 161         OrderedHashmap *dhcp6_client_send_options;
 162         OrderedHashmap *dhcp6_client_send_vendor_options;
 163         Set *dhcp6_request_options;
 164
 165         /* DHCP Server Support */
 166         bool dhcp_server;
 167         NetworkDHCPServerEmitAddress dhcp_server_emit[_SD_DHCP_LEASE_SERVER_TYPE_MAX];
 168         bool dhcp_server_emit_router;
 169         bool dhcp_server_emit_timezone;
 170         char *dhcp_server_timezone;
 171         usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
 172         uint32_t dhcp_server_pool_offset;
 173         uint32_t dhcp_server_pool_size;
 174
 175         /* link local addressing support */
 176         AddressFamily link_local;
 177         IPv6LinkLocalAddressGenMode ipv6ll_address_gen_mode;
 178         bool ipv4ll_route;
 179
 180         bool default_route_on_device;
 181
 182         /* IPv6 prefix delegation support */
 183         RADVPrefixDelegation router_prefix_delegation;
 184         int64_t router_prefix_subnet_id;
 185         usec_t router_lifetime_usec;
 186         uint8_t router_preference;
 187         bool router_managed;
 188         bool router_other_information;
 189         bool router_emit_dns;
 190         bool router_emit_domains;
 191         usec_t router_dns_lifetime_usec;
 192         struct in6_addr *router_dns;
 193         unsigned n_router_dns;
 194         OrderedSet *router_search_domains;
 195         bool dhcp6_force_pd_other_information; /* Start DHCPv6 PD also when 'O'
 196                                                   RA flag is set, see RFC 7084,
 197                                                   WPD-4 */
 198         bool dhcp6_pd_assign_prefix;
 199         union in_addr_union dhcp6_delegation_prefix_token;
 200
 201         /* Bridge Support */
 202         int use_bpdu;
 203         int hairpin;
 204         int fast_leave;
 205         int allow_port_to_be_root;
 206         int unicast_flood;
 207         int multicast_flood;
 208         int multicast_to_unicast;
 209         int neighbor_suppression;
 210         int learning;
 211         int bridge_proxy_arp;
 212         int bridge_proxy_arp_wifi;
 213         uint32_t cost;
 214         uint16_t priority;
 215         MulticastRouter multicast_router;
 216
 217         bool use_br_vlan;
 218         uint16_t pvid;
 219         uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 220         uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 221
 222         /* CAN support */
 223         uint32_t can_bitrate;
 224         unsigned can_sample_point;
 225         uint32_t can_data_bitrate;
 226         unsigned can_data_sample_point;
 227         usec_t can_restart_us;
 228         int can_triple_sampling;
 229         int can_termination;
 230         int can_listen_only;
 231         int can_fd_mode;
 232         int can_non_iso;
 233
 234         AddressFamily ip_forward;
 235         bool ip_masquerade;
 236         int ipv4_accept_local;
 237
 238         int ipv6_accept_ra;
 239         int ipv6_dad_transmits;
 240         int ipv6_hop_limit;
 241         int ipv6_proxy_ndp;
 242         int proxy_arp;
 243         uint32_t ipv6_mtu;
 244
 245         bool ipv6_accept_ra_use_dns;
 246         bool ipv6_accept_ra_use_autonomous_prefix;
 247         bool ipv6_accept_ra_use_onlink_prefix;
 248         bool active_slave;
 249         bool primary_slave;
 250         bool ipv6_accept_ra_route_table_set;
 251         DHCPUseDomains ipv6_accept_ra_use_domains;
 252         IPv6AcceptRAStartDHCP6Client ipv6_accept_ra_start_dhcp6_client;
 253         uint32_t ipv6_accept_ra_route_table;
 254         Set *ndisc_deny_listed_prefix;
 255         OrderedHashmap *ipv6_tokens;
 256
 257         IPv6PrivacyExtensions ipv6_privacy_extensions;
 258
 259         struct ether_addr *mac;
 260         uint32_t mtu;
 261         uint32_t group;
 262         int arp;
 263         int multicast;
 264         int allmulticast;
 265         bool unmanaged;
 266         bool configure_without_carrier;
 267         int ignore_carrier_loss;
 268         KeepConfiguration keep_configuration;
 269         uint32_t iaid;
 270         DUID duid;
 271
 272         bool iaid_set;
 273
 274         bool required_for_online; /* Is this network required to be considered online? */
 275         LinkOperationalStateRange required_operstate_for_online;
 276
 277         /* LLDP support */
 278         LLDPMode lldp_mode; /* LLDP reception */
 279         LLDPEmit lldp_emit; /* LLDP transmission */
 280         char *lldp_mud;    /* LLDP MUD URL */
 281
 282         LIST_HEAD(Address, static_addresses);
 283         LIST_HEAD(Route, static_routes);
 284         LIST_HEAD(NextHop, static_nexthops);
 285         LIST_HEAD(FdbEntry, static_fdb_entries);
 286         LIST_HEAD(IPv6ProxyNDPAddress, ipv6_proxy_ndp_addresses);
 287         LIST_HEAD(Neighbor, neighbors);
 288         LIST_HEAD(AddressLabel, address_labels);
 289         LIST_HEAD(Prefix, static_prefixes);
 290         LIST_HEAD(RoutePrefix, static_route_prefixes);
 291         LIST_HEAD(RoutingPolicyRule, rules);
 292
 293         unsigned n_static_addresses;
 294         unsigned n_static_routes;
 295         unsigned n_static_nexthops;
 296         unsigned n_static_fdb_entries;
 297         unsigned n_ipv6_proxy_ndp_addresses;
 298         unsigned n_neighbors;
 299         unsigned n_address_labels;
 300         unsigned n_static_prefixes;
 301         unsigned n_static_route_prefixes;
 302         unsigned n_rules;
 303
 304         Hashmap *addresses_by_section;
 305         Hashmap *routes_by_section;
 306         Hashmap *nexthops_by_section;
 307         Hashmap *fdb_entries_by_section;
 308         Hashmap *neighbors_by_section;
 309         Hashmap *address_labels_by_section;
 310         Hashmap *prefixes_by_section;
 311         Hashmap *route_prefixes_by_section;
 312         Hashmap *rules_by_section;
 313         OrderedHashmap *tc_by_section;
 314
 315         /* All kinds of DNS configuration */
 316         struct in_addr_data *dns;
 317         unsigned n_dns;
 318         OrderedSet *search_domains, *route_domains;
 319
 320         int dns_default_route;
 321         ResolveSupport llmnr;
 322         ResolveSupport mdns;
 323         DnssecMode dnssec_mode;
 324         DnsOverTlsMode dns_over_tls_mode;
 325         Set *dnssec_negative_trust_anchors;
 326
 327         char **ntp;
 328         char **bind_carrier;
 329 };
 330
 331 Network *network_ref(Network *network);
 332 Network *network_unref(Network *network);
 333 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_unref);
 334
 335 int network_load(Manager *manager, OrderedHashmap **networks);
 336 int network_reload(Manager *manager);
 337 int network_load_one(Manager *manager, OrderedHashmap **networks, const char *filename);
 338 int network_verify(Network *network);
 339
 340 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 341 int network_get(Manager *manager, unsigned short iftype, sd_device *device,
 342                 const char *ifname, char * const *alternative_names, const char *driver,
 343                 const struct ether_addr *mac, const struct ether_addr *permanent_mac,
 344                 enum nl80211_iftype wlan_iftype, const char *ssid, const struct ether_addr *bssid,
 345                 Network **ret);
 346 int network_apply(Network *network, Link *link);
 347 void network_apply_anonymize_if_set(Network *network);
 348
 349 bool network_has_static_ipv6_configurations(Network *network);
 350
 351 CONFIG_PARSER_PROTOTYPE(config_parse_stacked_netdev);
 352 CONFIG_PARSER_PROTOTYPE(config_parse_tunnel);
 353 CONFIG_PARSER_PROTOTYPE(config_parse_ipv6token);
 354 CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_privacy_extensions);
 355 CONFIG_PARSER_PROTOTYPE(config_parse_domains);
 356 CONFIG_PARSER_PROTOTYPE(config_parse_dns);
 357 CONFIG_PARSER_PROTOTYPE(config_parse_hostname);
 358 CONFIG_PARSER_PROTOTYPE(config_parse_timezone);
 359 CONFIG_PARSER_PROTOTYPE(config_parse_dnssec_negative_trust_anchors);
 360 CONFIG_PARSER_PROTOTYPE(config_parse_ntp);
 361 CONFIG_PARSER_PROTOTYPE(config_parse_required_for_online);
 362 CONFIG_PARSER_PROTOTYPE(config_parse_keep_configuration);
 363 CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_link_local_address_gen_mode);
 364
 365 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
 366
 367 const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
 368 IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
 369
 370 const char* keep_configuration_to_string(KeepConfiguration i) _const_;
 371 KeepConfiguration keep_configuration_from_string(const char *s) _pure_;
 372
 373 const char* ipv6_link_local_address_gen_mode_to_string(IPv6LinkLocalAddressGenMode s) _const_;
 374 IPv6LinkLocalAddressGenMode ipv6_link_local_address_gen_mode_from_string(const char *s) _pure_;