src/network/networkd-network.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include "sd-bus.h"
   5 #include "sd-device.h"
   6
   7 #include "condition.h"
   8 #include "conf-parser.h"
   9 #include "dhcp-identifier.h"
  10 #include "hashmap.h"
  11 #include "netdev/netdev.h"
  12 #include "networkd-address-label.h"
  13 #include "networkd-address.h"
  14 #include "networkd-brvlan.h"
  15 #include "networkd-fdb.h"
  16 #include "networkd-ipv6-proxy-ndp.h"
  17 #include "networkd-lldp-tx.h"
  18 #include "networkd-neighbor.h"
  19 #include "networkd-radv.h"
  20 #include "networkd-route.h"
  21 #include "networkd-routing-policy-rule.h"
  22 #include "networkd-util.h"
  23 #include "resolve-util.h"
  24
  25 #define DHCP_ROUTE_METRIC 1024
  26 #define IPV4LL_ROUTE_METRIC 2048
  27
  28 #define BRIDGE_VLAN_BITMAP_MAX 4096
  29 #define BRIDGE_VLAN_BITMAP_LEN (BRIDGE_VLAN_BITMAP_MAX / 32)
  30
  31 typedef enum DHCPClientIdentifier {
  32         DHCP_CLIENT_ID_MAC,
  33         DHCP_CLIENT_ID_DUID,
  34         /* The following option may not be good for RFC regarding DHCP (3315 and 4361).
  35          * But some setups require this. E.g., Sky Broadband, the second largest provider in the UK
  36          * requires the client id to be set to a custom string, reported at
  37          * https://github.com/systemd/systemd/issues/7828 */
  38         DHCP_CLIENT_ID_DUID_ONLY,
  39         _DHCP_CLIENT_ID_MAX,
  40         _DHCP_CLIENT_ID_INVALID = -1,
  41 } DHCPClientIdentifier;
  42
  43 typedef enum IPv6PrivacyExtensions {
  44         /* The values map to the kernel's /proc/sys/net/ipv6/conf/xxx/use_tempaddr values */
  45         IPV6_PRIVACY_EXTENSIONS_NO,
  46         IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC,
  47         IPV6_PRIVACY_EXTENSIONS_YES, /* aka prefer-temporary */
  48         _IPV6_PRIVACY_EXTENSIONS_MAX,
  49         _IPV6_PRIVACY_EXTENSIONS_INVALID = -1,
  50 } IPv6PrivacyExtensions;
  51
  52 typedef enum DHCPUseDomains {
  53         DHCP_USE_DOMAINS_NO,
  54         DHCP_USE_DOMAINS_YES,
  55         DHCP_USE_DOMAINS_ROUTE,
  56         _DHCP_USE_DOMAINS_MAX,
  57         _DHCP_USE_DOMAINS_INVALID = -1,
  58 } DHCPUseDomains;
  59
  60 typedef enum LLDPMode {
  61         LLDP_MODE_NO = 0,
  62         LLDP_MODE_YES = 1,
  63         LLDP_MODE_ROUTERS_ONLY = 2,
  64         _LLDP_MODE_MAX,
  65         _LLDP_MODE_INVALID = -1,
  66 } LLDPMode;
  67
  68 typedef struct DUID {
  69         /* Value of Type in [DHCP] section */
  70         DUIDType type;
  71
  72         uint8_t raw_data_len;
  73         uint8_t raw_data[MAX_DUID_LEN];
  74         usec_t llt_time;
  75 } DUID;
  76
  77 typedef enum RADVPrefixDelegation {
  78         RADV_PREFIX_DELEGATION_NONE,
  79         RADV_PREFIX_DELEGATION_STATIC,
  80         RADV_PREFIX_DELEGATION_DHCP6,
  81         RADV_PREFIX_DELEGATION_BOTH,
  82         _RADV_PREFIX_DELEGATION_MAX,
  83         _RADV_PREFIX_DELEGATION_INVALID = -1,
  84 } RADVPrefixDelegation;
  85
  86 typedef struct NetworkConfigSection {
  87         unsigned line;
  88         char filename[];
  89 } NetworkConfigSection;
  90
  91 int network_config_section_new(const char *filename, unsigned line, NetworkConfigSection **s);
  92 void network_config_section_free(NetworkConfigSection *network);
  93 DEFINE_TRIVIAL_CLEANUP_FUNC(NetworkConfigSection*, network_config_section_free);
  94 extern const struct hash_ops network_config_hash_ops;
  95
  96 typedef struct Manager Manager;
  97
  98 struct Network {
  99         Manager *manager;
 100
 101         char *filename;
 102         char *name;
 103
 104         Set *match_mac;
 105         char **match_path;
 106         char **match_driver;
 107         char **match_type;
 108         char **match_name;
 109
 110         Condition *match_host;
 111         Condition *match_virt;
 112         Condition *match_kernel_cmdline;
 113         Condition *match_kernel_version;
 114         Condition *match_arch;
 115
 116         char *description;
 117
 118         NetDev *bridge;
 119         NetDev *bond;
 120         NetDev *vrf;
 121         Hashmap *stacked_netdevs;
 122
 123         /* DHCP Client Support */
 124         AddressFamilyBoolean dhcp;
 125         DHCPClientIdentifier dhcp_client_identifier;
 126         char *dhcp_vendor_class_identifier;
 127         char **dhcp_user_class;
 128         char *dhcp_hostname;
 129         unsigned dhcp_route_metric;
 130         uint32_t dhcp_route_table;
 131         uint16_t dhcp_client_port;
 132         bool dhcp_anonymize;
 133         bool dhcp_send_hostname;
 134         bool dhcp_broadcast;
 135         bool dhcp_critical;
 136         bool dhcp_use_dns;
 137         bool dhcp_use_ntp;
 138         bool dhcp_use_mtu;
 139         bool dhcp_use_routes;
 140         bool dhcp_use_timezone;
 141         bool rapid_commit;
 142         bool dhcp_use_hostname;
 143         bool dhcp_route_table_set;
 144         DHCPUseDomains dhcp_use_domains;
 145
 146         /* DHCP Server Support */
 147         bool dhcp_server;
 148         bool dhcp_server_emit_dns;
 149         struct in_addr *dhcp_server_dns;
 150         unsigned n_dhcp_server_dns;
 151         bool dhcp_server_emit_ntp;
 152         struct in_addr *dhcp_server_ntp;
 153         unsigned n_dhcp_server_ntp;
 154         bool dhcp_server_emit_router;
 155         bool dhcp_server_emit_timezone;
 156         char *dhcp_server_timezone;
 157         usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
 158         uint32_t dhcp_server_pool_offset;
 159         uint32_t dhcp_server_pool_size;
 160
 161         /* IPV4LL Support */
 162         AddressFamilyBoolean link_local;
 163         bool ipv4ll_route;
 164
 165         /* IPv6 prefix delegation support */
 166         RADVPrefixDelegation router_prefix_delegation;
 167         usec_t router_lifetime_usec;
 168         uint8_t router_preference;
 169         bool router_managed;
 170         bool router_other_information;
 171         bool router_emit_dns;
 172         bool router_emit_domains;
 173         usec_t router_dns_lifetime_usec;
 174         struct in6_addr *router_dns;
 175         unsigned n_router_dns;
 176         char **router_search_domains;
 177         bool dhcp6_force_pd_other_information; /* Start DHCPv6 PD also when 'O'
 178                                                   RA flag is set, see RFC 7084,
 179                                                   WPD-4 */
 180
 181         /* Bridge Support */
 182         int use_bpdu;
 183         int hairpin;
 184         int fast_leave;
 185         int allow_port_to_be_root;
 186         int unicast_flood;
 187         int multicast_to_unicast;
 188         uint32_t cost;
 189         uint16_t priority;
 190
 191         bool use_br_vlan;
 192         uint16_t pvid;
 193         uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 194         uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 195
 196         /* CAN support */
 197         size_t can_bitrate;
 198         unsigned can_sample_point;
 199         usec_t can_restart_us;
 200
 201         AddressFamilyBoolean ip_forward;
 202         bool ip_masquerade;
 203
 204         int ipv6_accept_ra;
 205         int ipv6_dad_transmits;
 206         int ipv6_hop_limit;
 207         int ipv6_proxy_ndp;
 208         int proxy_arp;
 209         uint32_t ipv6_mtu;
 210
 211         bool ipv6_accept_ra_use_dns;
 212         bool active_slave;
 213         bool primary_slave;
 214         DHCPUseDomains ipv6_accept_ra_use_domains;
 215         uint32_t ipv6_accept_ra_route_table;
 216
 217         union in_addr_union ipv6_token;
 218         IPv6PrivacyExtensions ipv6_privacy_extensions;
 219
 220         struct ether_addr *mac;
 221         uint32_t mtu;
 222         int arp;
 223         int multicast;
 224         int allmulticast;
 225         bool unmanaged;
 226         bool configure_without_carrier;
 227         uint32_t iaid;
 228         DUID duid;
 229
 230         bool required_for_online; /* Is this network required to be considered online? */
 231
 232         LLDPMode lldp_mode; /* LLDP reception */
 233         LLDPEmit lldp_emit; /* LLDP transmission */
 234
 235         LIST_HEAD(Address, static_addresses);
 236         LIST_HEAD(Route, static_routes);
 237         LIST_HEAD(FdbEntry, static_fdb_entries);
 238         LIST_HEAD(IPv6ProxyNDPAddress, ipv6_proxy_ndp_addresses);
 239         LIST_HEAD(Neighbor, neighbors);
 240         LIST_HEAD(AddressLabel, address_labels);
 241         LIST_HEAD(Prefix, static_prefixes);
 242         LIST_HEAD(RoutingPolicyRule, rules);
 243
 244         unsigned n_static_addresses;
 245         unsigned n_static_routes;
 246         unsigned n_static_fdb_entries;
 247         unsigned n_ipv6_proxy_ndp_addresses;
 248         unsigned n_neighbors;
 249         unsigned n_address_labels;
 250         unsigned n_static_prefixes;
 251         unsigned n_rules;
 252
 253         Hashmap *addresses_by_section;
 254         Hashmap *routes_by_section;
 255         Hashmap *fdb_entries_by_section;
 256         Hashmap *neighbors_by_section;
 257         Hashmap *address_labels_by_section;
 258         Hashmap *prefixes_by_section;
 259         Hashmap *rules_by_section;
 260
 261         struct in_addr_data *dns;
 262         unsigned n_dns;
 263
 264         char **search_domains, **route_domains, **ntp, **bind_carrier;
 265
 266         ResolveSupport llmnr;
 267         ResolveSupport mdns;
 268         DnssecMode dnssec_mode;
 269         DnsOverTlsMode dns_over_tls_mode;
 270         Set *dnssec_negative_trust_anchors;
 271
 272         LIST_FIELDS(Network, networks);
 273 };
 274
 275 void network_free(Network *network);
 276
 277 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
 278
 279 int network_load(Manager *manager);
 280 int network_load_one(Manager *manager, const char *filename);
 281
 282 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 283 int network_get(Manager *manager, sd_device *device, const char *ifname, const struct ether_addr *mac, Network **ret);
 284 int network_apply(Network *network, Link *link);
 285 void network_apply_anonymize_if_set(Network *network);
 286
 287 bool network_has_static_ipv6_addresses(Network *network);
 288
 289 CONFIG_PARSER_PROTOTYPE(config_parse_netdev);
 290 CONFIG_PARSER_PROTOTYPE(config_parse_domains);
 291 CONFIG_PARSER_PROTOTYPE(config_parse_tunnel);
 292 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp);
 293 CONFIG_PARSER_PROTOTYPE(config_parse_dns);
 294 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_client_identifier);
 295 CONFIG_PARSER_PROTOTYPE(config_parse_ipv6token);
 296 CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_privacy_extensions);
 297 CONFIG_PARSER_PROTOTYPE(config_parse_hostname);
 298 CONFIG_PARSER_PROTOTYPE(config_parse_timezone);
 299 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_server_dns);
 300 CONFIG_PARSER_PROTOTYPE(config_parse_radv_dns);
 301 CONFIG_PARSER_PROTOTYPE(config_parse_radv_search_domains);
 302 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_server_ntp);
 303 CONFIG_PARSER_PROTOTYPE(config_parse_dnssec_negative_trust_anchors);
 304 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_use_domains);
 305 CONFIG_PARSER_PROTOTYPE(config_parse_lldp_mode);
 306 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_route_table);
 307 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_user_class);
 308 CONFIG_PARSER_PROTOTYPE(config_parse_ntp);
 309 /* Legacy IPv4LL support */
 310 CONFIG_PARSER_PROTOTYPE(config_parse_ipv4ll);
 311
 312 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
 313
 314 extern const sd_bus_vtable network_vtable[];
 315
 316 int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
 317 int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
 318
 319 const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
 320 IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
 321
 322 const char* dhcp_use_domains_to_string(DHCPUseDomains p) _const_;
 323 DHCPUseDomains dhcp_use_domains_from_string(const char *s) _pure_;
 324
 325 const char* lldp_mode_to_string(LLDPMode m) _const_;
 326 LLDPMode lldp_mode_from_string(const char *s) _pure_;
 327
 328 const char* radv_prefix_delegation_to_string(RADVPrefixDelegation i) _const_;
 329 RADVPrefixDelegation radv_prefix_delegation_from_string(const char *s) _pure_;