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-dhcp6.h"
  21 #include "networkd-dhcp-server.h"
  22 #include "networkd-fdb.h"
  23 #include "networkd-ipv6-proxy-ndp.h"
  24 #include "networkd-lldp-rx.h"
  25 #include "networkd-lldp-tx.h"
  26 #include "networkd-ndisc.h"
  27 #include "networkd-neighbor.h"
  28 #include "networkd-nexthop.h"
  29 #include "networkd-radv.h"
  30 #include "networkd-route.h"
  31 #include "networkd-routing-policy-rule.h"
  32 #include "networkd-util.h"
  33 #include "ordered-set.h"
  34 #include "resolve-util.h"
  35
  36 typedef enum IPv6PrivacyExtensions {
  37         /* The values map to the kernel's /proc/sys/net/ipv6/conf/xxx/use_tempaddr values */
  38         IPV6_PRIVACY_EXTENSIONS_NO,
  39         IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC,
  40         IPV6_PRIVACY_EXTENSIONS_YES, /* aka prefer-temporary */
  41         _IPV6_PRIVACY_EXTENSIONS_MAX,
  42         _IPV6_PRIVACY_EXTENSIONS_INVALID = -1,
  43 } IPv6PrivacyExtensions;
  44
  45 typedef enum KeepConfiguration {
  46         KEEP_CONFIGURATION_NO            = 0,
  47         KEEP_CONFIGURATION_DHCP_ON_START = 1 << 0,
  48         KEEP_CONFIGURATION_DHCP_ON_STOP  = 1 << 1,
  49         KEEP_CONFIGURATION_DHCP          = KEEP_CONFIGURATION_DHCP_ON_START | KEEP_CONFIGURATION_DHCP_ON_STOP,
  50         KEEP_CONFIGURATION_STATIC        = 1 << 2,
  51         KEEP_CONFIGURATION_YES           = KEEP_CONFIGURATION_DHCP | KEEP_CONFIGURATION_STATIC,
  52         _KEEP_CONFIGURATION_MAX,
  53         _KEEP_CONFIGURATION_INVALID = -1,
  54 } KeepConfiguration;
  55
  56 typedef enum IPv6LinkLocalAddressGenMode {
  57        IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_EUI64          = IN6_ADDR_GEN_MODE_EUI64,
  58        IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_NONE           = IN6_ADDR_GEN_MODE_NONE,
  59        IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_STABLE_PRIVACY = IN6_ADDR_GEN_MODE_STABLE_PRIVACY,
  60        IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_RANDOM         = IN6_ADDR_GEN_MODE_RANDOM,
  61        _IPV6_LINK_LOCAL_ADDRESS_GEN_MODE_MAX,
  62        _IPV6_LINK_LOCAL_ADDRESS_GEN_MODE_INVALID        = -1
  63 } IPv6LinkLocalAddressGenMode;
  64
  65 typedef struct Manager Manager;
  66
  67 typedef struct NetworkDHCPServerEmitAddress {
  68         bool emit;
  69         struct in_addr *addresses;
  70         size_t n_addresses;
  71 } NetworkDHCPServerEmitAddress;
  72
  73 struct Network {
  74         Manager *manager;
  75
  76         char *filename;
  77         char *name;
  78         usec_t timestamp;
  79
  80         unsigned n_ref;
  81
  82         Set *match_mac;
  83         Set *match_permanent_mac;
  84         char **match_path;
  85         char **match_driver;
  86         char **match_type;
  87         char **match_name;
  88         char **match_property;
  89         char **match_wlan_iftype;
  90         char **match_ssid;
  91         Set *match_bssid;
  92         LIST_HEAD(Condition, conditions);
  93
  94         char *description;
  95
  96         NetDev *bridge;
  97         NetDev *bond;
  98         NetDev *vrf;
  99         NetDev *xfrm;
 100         Hashmap *stacked_netdevs;
 101         char *bridge_name;
 102         char *bond_name;
 103         char *vrf_name;
 104         Hashmap *stacked_netdev_names;
 105
 106         /* DHCP Client Support */
 107         AddressFamily dhcp;
 108         DHCPClientIdentifier dhcp_client_identifier;
 109         char *dhcp_vendor_class_identifier;
 110         char *dhcp_mudurl;
 111         char **dhcp_user_class;
 112         char *dhcp_hostname;
 113         uint64_t dhcp_max_attempts;
 114         uint32_t dhcp_route_metric;
 115         bool dhcp_route_metric_set;
 116         uint32_t dhcp_route_table;
 117         uint32_t dhcp_fallback_lease_lifetime;
 118         uint32_t dhcp_route_mtu;
 119         uint16_t dhcp_client_port;
 120         int dhcp_critical;
 121         int ip_service_type;
 122         bool dhcp_anonymize;
 123         bool dhcp_send_hostname;
 124         bool dhcp_broadcast;
 125         bool dhcp_use_dns;
 126         bool dhcp_use_dns_set;
 127         bool dhcp_routes_to_dns;
 128         bool dhcp_use_ntp;
 129         bool dhcp_use_ntp_set;
 130         bool dhcp_use_sip;
 131         bool dhcp_use_mtu;
 132         bool dhcp_use_routes;
 133         int dhcp_use_gateway;
 134         bool dhcp_use_timezone;
 135         bool rapid_commit;
 136         bool dhcp_use_hostname;
 137         bool dhcp_route_table_set;
 138         bool dhcp_send_release;
 139         bool dhcp_send_decline;
 140         DHCPUseDomains dhcp_use_domains;
 141         sd_ipv4acd *dhcp_acd;
 142         Set *dhcp_deny_listed_ip;
 143         Set *dhcp_allow_listed_ip;
 144         Set *dhcp_request_options;
 145         OrderedHashmap *dhcp_client_send_options;
 146         OrderedHashmap *dhcp_client_send_vendor_options;
 147         OrderedHashmap *dhcp_server_send_options;
 148         OrderedHashmap *dhcp_server_send_vendor_options;
 149
 150         /* DHCPv6 Client support*/
 151         bool dhcp6_use_dns;
 152         bool dhcp6_use_dns_set;
 153         bool dhcp6_use_ntp;
 154         bool dhcp6_use_ntp_set;
 155         uint8_t dhcp6_pd_length;
 156         uint32_t dhcp6_route_metric;
 157         bool dhcp6_route_metric_set;
 158         char *dhcp6_mudurl;
 159         char **dhcp6_user_class;
 160         char **dhcp6_vendor_class;
 161         struct in6_addr dhcp6_pd_address;
 162         DHCP6ClientStartMode dhcp6_without_ra;
 163         OrderedHashmap *dhcp6_client_send_options;
 164         OrderedHashmap *dhcp6_client_send_vendor_options;
 165         Set *dhcp6_request_options;
 166
 167         /* DHCP Server Support */
 168         bool dhcp_server;
 169         NetworkDHCPServerEmitAddress dhcp_server_emit[_SD_DHCP_LEASE_SERVER_TYPE_MAX];
 170         bool dhcp_server_emit_router;
 171         bool dhcp_server_emit_timezone;
 172         char *dhcp_server_timezone;
 173         usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
 174         uint32_t dhcp_server_pool_offset;
 175         uint32_t dhcp_server_pool_size;
 176
 177         /* link local addressing support */
 178         AddressFamily link_local;
 179         IPv6LinkLocalAddressGenMode ipv6ll_address_gen_mode;
 180         bool ipv4ll_route;
 181
 182         bool default_route_on_device;
 183
 184         /* IPv6 prefix delegation support */
 185         RADVPrefixDelegation router_prefix_delegation;
 186         int64_t router_prefix_subnet_id;
 187         usec_t router_lifetime_usec;
 188         uint8_t router_preference;
 189         bool router_managed;
 190         bool router_other_information;
 191         bool router_emit_dns;
 192         bool router_emit_domains;
 193         usec_t router_dns_lifetime_usec;
 194         struct in6_addr *router_dns;
 195         unsigned n_router_dns;
 196         OrderedSet *router_search_domains;
 197         bool dhcp6_force_pd_other_information; /* Start DHCPv6 PD also when 'O'
 198                                                   RA flag is set, see RFC 7084,
 199                                                   WPD-4 */
 200         bool dhcp6_pd_assign_prefix;
 201         union in_addr_union dhcp6_delegation_prefix_token;
 202
 203         /* Bridge Support */
 204         int use_bpdu;
 205         int hairpin;
 206         int fast_leave;
 207         int allow_port_to_be_root;
 208         int unicast_flood;
 209         int multicast_flood;
 210         int multicast_to_unicast;
 211         int neighbor_suppression;
 212         int learning;
 213         int bridge_proxy_arp;
 214         int bridge_proxy_arp_wifi;
 215         uint32_t cost;
 216         uint16_t priority;
 217         MulticastRouter multicast_router;
 218
 219         bool use_br_vlan;
 220         uint16_t pvid;
 221         uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 222         uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 223
 224         /* CAN support */
 225         uint32_t can_bitrate;
 226         unsigned can_sample_point;
 227         uint32_t can_data_bitrate;
 228         unsigned can_data_sample_point;
 229         usec_t can_restart_us;
 230         int can_triple_sampling;
 231         int can_termination;
 232         int can_listen_only;
 233         int can_fd_mode;
 234         int can_non_iso;
 235
 236         AddressFamily ip_forward;
 237         bool ip_masquerade;
 238         int ipv4_accept_local;
 239
 240         int ipv6_accept_ra;
 241         int ipv6_dad_transmits;
 242         int ipv6_hop_limit;
 243         int ipv6_proxy_ndp;
 244         int proxy_arp;
 245         uint32_t ipv6_mtu;
 246
 247         bool ipv6_accept_ra_use_dns;
 248         bool ipv6_accept_ra_use_autonomous_prefix;
 249         bool ipv6_accept_ra_use_onlink_prefix;
 250         bool active_slave;
 251         bool primary_slave;
 252         bool ipv6_accept_ra_route_table_set;
 253         DHCPUseDomains ipv6_accept_ra_use_domains;
 254         IPv6AcceptRAStartDHCP6Client ipv6_accept_ra_start_dhcp6_client;
 255         uint32_t ipv6_accept_ra_route_table;
 256         Set *ndisc_deny_listed_prefix;
 257         OrderedHashmap *ipv6_tokens;
 258
 259         IPv6PrivacyExtensions ipv6_privacy_extensions;
 260
 261         struct ether_addr *mac;
 262         uint32_t mtu;
 263         uint32_t group;
 264         int arp;
 265         int multicast;
 266         int allmulticast;
 267         bool unmanaged;
 268         bool configure_without_carrier;
 269         int ignore_carrier_loss;
 270         KeepConfiguration keep_configuration;
 271         uint32_t iaid;
 272         DUID duid;
 273
 274         bool iaid_set;
 275
 276         bool required_for_online; /* Is this network required to be considered online? */
 277         LinkOperationalStateRange required_operstate_for_online;
 278
 279         /* LLDP support */
 280         LLDPMode lldp_mode; /* LLDP reception */
 281         LLDPEmit lldp_emit; /* LLDP transmission */
 282         char *lldp_mud;    /* LLDP MUD URL */
 283
 284         LIST_HEAD(Address, static_addresses);
 285         LIST_HEAD(Route, static_routes);
 286         LIST_HEAD(NextHop, static_nexthops);
 287         LIST_HEAD(FdbEntry, static_fdb_entries);
 288         LIST_HEAD(IPv6ProxyNDPAddress, ipv6_proxy_ndp_addresses);
 289         LIST_HEAD(Neighbor, neighbors);
 290         LIST_HEAD(AddressLabel, address_labels);
 291         LIST_HEAD(Prefix, static_prefixes);
 292         LIST_HEAD(RoutePrefix, static_route_prefixes);
 293         LIST_HEAD(RoutingPolicyRule, rules);
 294
 295         unsigned n_static_addresses;
 296         unsigned n_static_routes;
 297         unsigned n_static_nexthops;
 298         unsigned n_static_fdb_entries;
 299         unsigned n_ipv6_proxy_ndp_addresses;
 300         unsigned n_neighbors;
 301         unsigned n_address_labels;
 302         unsigned n_static_prefixes;
 303         unsigned n_static_route_prefixes;
 304         unsigned n_rules;
 305
 306         Hashmap *addresses_by_section;
 307         Hashmap *routes_by_section;
 308         Hashmap *nexthops_by_section;
 309         Hashmap *fdb_entries_by_section;
 310         Hashmap *neighbors_by_section;
 311         Hashmap *address_labels_by_section;
 312         Hashmap *prefixes_by_section;
 313         Hashmap *route_prefixes_by_section;
 314         Hashmap *rules_by_section;
 315         OrderedHashmap *tc_by_section;
 316         OrderedHashmap *sr_iov_by_section;
 317
 318         /* All kinds of DNS configuration */
 319         struct in_addr_data *dns;
 320         unsigned n_dns;
 321         OrderedSet *search_domains, *route_domains;
 322
 323         int dns_default_route;
 324         ResolveSupport llmnr;
 325         ResolveSupport mdns;
 326         DnssecMode dnssec_mode;
 327         DnsOverTlsMode dns_over_tls_mode;
 328         Set *dnssec_negative_trust_anchors;
 329
 330         char **ntp;
 331         char **bind_carrier;
 332 };
 333
 334 Network *network_ref(Network *network);
 335 Network *network_unref(Network *network);
 336 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_unref);
 337
 338 int network_load(Manager *manager, OrderedHashmap **networks);
 339 int network_reload(Manager *manager);
 340 int network_load_one(Manager *manager, OrderedHashmap **networks, const char *filename);
 341 int network_verify(Network *network);
 342
 343 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 344 int network_get(Manager *manager, unsigned short iftype, sd_device *device,
 345                 const char *ifname, char * const *alternative_names, const char *driver,
 346                 const struct ether_addr *mac, const struct ether_addr *permanent_mac,
 347                 enum nl80211_iftype wlan_iftype, const char *ssid, const struct ether_addr *bssid,
 348                 Network **ret);
 349 int network_apply(Network *network, Link *link);
 350 void network_apply_anonymize_if_set(Network *network);
 351
 352 bool network_has_static_ipv6_configurations(Network *network);
 353
 354 CONFIG_PARSER_PROTOTYPE(config_parse_stacked_netdev);
 355 CONFIG_PARSER_PROTOTYPE(config_parse_tunnel);
 356 CONFIG_PARSER_PROTOTYPE(config_parse_ipv6token);
 357 CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_privacy_extensions);
 358 CONFIG_PARSER_PROTOTYPE(config_parse_domains);
 359 CONFIG_PARSER_PROTOTYPE(config_parse_dns);
 360 CONFIG_PARSER_PROTOTYPE(config_parse_hostname);
 361 CONFIG_PARSER_PROTOTYPE(config_parse_timezone);
 362 CONFIG_PARSER_PROTOTYPE(config_parse_dnssec_negative_trust_anchors);
 363 CONFIG_PARSER_PROTOTYPE(config_parse_ntp);
 364 CONFIG_PARSER_PROTOTYPE(config_parse_required_for_online);
 365 CONFIG_PARSER_PROTOTYPE(config_parse_keep_configuration);
 366 CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_link_local_address_gen_mode);
 367
 368 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
 369
 370 const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
 371 IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
 372
 373 const char* keep_configuration_to_string(KeepConfiguration i) _const_;
 374 KeepConfiguration keep_configuration_from_string(const char *s) _pure_;
 375
 376 const char* ipv6_link_local_address_gen_mode_to_string(IPv6LinkLocalAddressGenMode s) _const_;
 377 IPv6LinkLocalAddressGenMode ipv6_link_local_address_gen_mode_from_string(const char *s) _pure_;