src/network/networkd-network.h

   1 #pragma once
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2013 Tom Gundersen <teg@jklm.no>
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include "sd-bus.h"
  23 #include "udev.h"
  24
  25 #include "condition.h"
  26 #include "dhcp-identifier.h"
  27 #include "hashmap.h"
  28 #include "resolve-util.h"
  29
  30 #include "networkd-address.h"
  31 #include "networkd-address-label.h"
  32 #include "networkd-brvlan.h"
  33 #include "networkd-fdb.h"
  34 #include "networkd-lldp-tx.h"
  35 #include "networkd-ipv6-proxy-ndp.h"
  36 #include "networkd-route.h"
  37 #include "networkd-routing-policy-rule.h"
  38 #include "networkd-util.h"
  39 #include "netdev/netdev.h"
  40
  41 #define DHCP_ROUTE_METRIC 1024
  42 #define IPV4LL_ROUTE_METRIC 2048
  43
  44 #define BRIDGE_VLAN_BITMAP_MAX 4096
  45 #define BRIDGE_VLAN_BITMAP_LEN (BRIDGE_VLAN_BITMAP_MAX / 32)
  46
  47 typedef enum DHCPClientIdentifier {
  48         DHCP_CLIENT_ID_MAC,
  49         DHCP_CLIENT_ID_DUID,
  50         _DHCP_CLIENT_ID_MAX,
  51         _DHCP_CLIENT_ID_INVALID = -1,
  52 } DHCPClientIdentifier;
  53
  54 typedef enum IPv6PrivacyExtensions {
  55         /* The values map to the kernel's /proc/sys/net/ipv6/conf/xxx/use_tempaddr values */
  56         IPV6_PRIVACY_EXTENSIONS_NO,
  57         IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC,
  58         IPV6_PRIVACY_EXTENSIONS_YES, /* aka prefer-temporary */
  59         _IPV6_PRIVACY_EXTENSIONS_MAX,
  60         _IPV6_PRIVACY_EXTENSIONS_INVALID = -1,
  61 } IPv6PrivacyExtensions;
  62
  63 typedef enum DHCPUseDomains {
  64         DHCP_USE_DOMAINS_NO,
  65         DHCP_USE_DOMAINS_YES,
  66         DHCP_USE_DOMAINS_ROUTE,
  67         _DHCP_USE_DOMAINS_MAX,
  68         _DHCP_USE_DOMAINS_INVALID = -1,
  69 } DHCPUseDomains;
  70
  71 typedef enum LLDPMode {
  72         LLDP_MODE_NO = 0,
  73         LLDP_MODE_YES = 1,
  74         LLDP_MODE_ROUTERS_ONLY = 2,
  75         _LLDP_MODE_MAX,
  76         _LLDP_MODE_INVALID = -1,
  77 } LLDPMode;
  78
  79 typedef struct DUID {
  80         /* Value of Type in [DHCP] section */
  81         DUIDType type;
  82
  83         uint8_t raw_data_len;
  84         uint8_t raw_data[MAX_DUID_LEN];
  85 } DUID;
  86
  87 typedef struct NetworkConfigSection {
  88         unsigned line;
  89         char filename[];
  90 } NetworkConfigSection;
  91
  92 int network_config_section_new(const char *filename, unsigned line, NetworkConfigSection **s);
  93 void network_config_section_free(NetworkConfigSection *network);
  94
  95 DEFINE_TRIVIAL_CLEANUP_FUNC(NetworkConfigSection*, network_config_section_free);
  96 #define _cleanup_network_config_section_free_ _cleanup_(network_config_section_freep)
  97
  98 typedef struct Manager Manager;
  99
 100 struct Network {
 101         Manager *manager;
 102
 103         char *filename;
 104         char *name;
 105
 106         struct ether_addr *match_mac;
 107         char **match_path;
 108         char **match_driver;
 109         char **match_type;
 110         char **match_name;
 111
 112         Condition *match_host;
 113         Condition *match_virt;
 114         Condition *match_kernel;
 115         Condition *match_arch;
 116
 117         char *description;
 118
 119         NetDev *bridge;
 120         NetDev *bond;
 121         NetDev *vrf;
 122         Hashmap *stacked_netdevs;
 123
 124         /* DHCP Client Support */
 125         AddressFamilyBoolean dhcp;
 126         DHCPClientIdentifier dhcp_client_identifier;
 127         char *dhcp_vendor_class_identifier;
 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 dhcp_use_hostname;
 142         bool dhcp_route_table_set;
 143         DHCPUseDomains dhcp_use_domains;
 144
 145         /* DHCP Server Support */
 146         bool dhcp_server;
 147         bool dhcp_server_emit_dns;
 148         struct in_addr *dhcp_server_dns;
 149         unsigned n_dhcp_server_dns;
 150         bool dhcp_server_emit_ntp;
 151         struct in_addr *dhcp_server_ntp;
 152         unsigned n_dhcp_server_ntp;
 153         bool dhcp_server_emit_router;
 154         bool dhcp_server_emit_timezone;
 155         char *dhcp_server_timezone;
 156         usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
 157         uint32_t dhcp_server_pool_offset;
 158         uint32_t dhcp_server_pool_size;
 159
 160         /* IPV4LL Support */
 161         AddressFamilyBoolean link_local;
 162         bool ipv4ll_route;
 163
 164         /* IPv6 prefix delegation support */
 165         bool router_prefix_delegation;
 166         usec_t router_lifetime_usec;
 167         uint8_t router_preference;
 168         bool router_managed;
 169         bool router_other_information;
 170         bool router_emit_dns;
 171         bool router_emit_domains;
 172         usec_t router_dns_lifetime_usec;
 173         struct in6_addr *router_dns;
 174         unsigned n_router_dns;
 175         char **router_search_domains;
 176
 177         /* Bridge Support */
 178         bool use_bpdu;
 179         bool hairpin;
 180         bool fast_leave;
 181         bool allow_port_to_be_root;
 182         bool unicast_flood;
 183         uint32_t cost;
 184         uint16_t priority;
 185
 186         bool use_br_vlan;
 187         uint16_t pvid;
 188         uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 189         uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 190
 191         AddressFamilyBoolean ip_forward;
 192         bool ip_masquerade;
 193
 194         int ipv6_accept_ra;
 195         int ipv6_dad_transmits;
 196         int ipv6_hop_limit;
 197         int ipv6_proxy_ndp;
 198         int proxy_arp;
 199
 200         bool ipv6_accept_ra_use_dns;
 201         bool active_slave;
 202         bool primary_slave;
 203         DHCPUseDomains ipv6_accept_ra_use_domains;
 204         uint32_t ipv6_accept_ra_route_table;
 205
 206         union in_addr_union ipv6_token;
 207         IPv6PrivacyExtensions ipv6_privacy_extensions;
 208
 209         struct ether_addr *mac;
 210         size_t mtu;
 211         int arp;
 212         bool unmanaged;
 213         bool configure_without_carrier;
 214         uint32_t iaid;
 215         DUID duid;
 216
 217         LLDPMode lldp_mode; /* LLDP reception */
 218         LLDPEmit lldp_emit; /* LLDP transmission */
 219
 220         LIST_HEAD(Address, static_addresses);
 221         LIST_HEAD(Route, static_routes);
 222         LIST_HEAD(FdbEntry, static_fdb_entries);
 223         LIST_HEAD(IPv6ProxyNDPAddress, ipv6_proxy_ndp_addresses);
 224         LIST_HEAD(AddressLabel, address_labels);
 225         LIST_HEAD(Prefix, static_prefixes);
 226         LIST_HEAD(RoutingPolicyRule, rules);
 227
 228         unsigned n_static_addresses;
 229         unsigned n_static_routes;
 230         unsigned n_static_fdb_entries;
 231         unsigned n_ipv6_proxy_ndp_addresses;
 232         unsigned n_address_labels;
 233         unsigned n_static_prefixes;
 234         unsigned n_rules;
 235
 236         Hashmap *addresses_by_section;
 237         Hashmap *routes_by_section;
 238         Hashmap *fdb_entries_by_section;
 239         Hashmap *address_labels_by_section;
 240         Hashmap *prefixes_by_section;
 241         Hashmap *rules_by_section;
 242
 243         struct in_addr_data *dns;
 244         unsigned n_dns;
 245
 246         char **search_domains, **route_domains, **ntp, **bind_carrier;
 247
 248         ResolveSupport llmnr;
 249         ResolveSupport mdns;
 250         DnssecMode dnssec_mode;
 251         Set *dnssec_negative_trust_anchors;
 252
 253         LIST_FIELDS(Network, networks);
 254 };
 255
 256 void network_free(Network *network);
 257
 258 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
 259 #define _cleanup_network_free_ _cleanup_(network_freep)
 260
 261 int network_load(Manager *manager);
 262
 263 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 264 int network_get(Manager *manager, struct udev_device *device, const char *ifname, const struct ether_addr *mac, Network **ret);
 265 int network_apply(Network *network, Link *link);
 266 void network_apply_anonymize_if_set(Network *network);
 267
 268 bool network_has_static_ipv6_addresses(Network *network);
 269
 270 int config_parse_netdev(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 271 int config_parse_domains(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 272 int config_parse_tunnel(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 273 int config_parse_dhcp(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 274 int config_parse_dns(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 275 int config_parse_dhcp_client_identifier(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 276 int config_parse_ipv6token(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 277 int config_parse_ipv6_privacy_extensions(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 278 int config_parse_hostname(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 279 int config_parse_timezone(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 280 int config_parse_dhcp_server_dns(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 281 int config_parse_radv_dns(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 282 int config_parse_radv_search_domains(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 283 int config_parse_dhcp_server_ntp(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 284 int config_parse_dnssec_negative_trust_anchors(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 285 int config_parse_dhcp_use_domains(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 286 int config_parse_lldp_mode(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 287 int config_parse_dhcp_route_table(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 288 int config_parse_ntp(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 289
 290 /* Legacy IPv4LL support */
 291 int config_parse_ipv4ll(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 292
 293 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
 294
 295 extern const sd_bus_vtable network_vtable[];
 296
 297 int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
 298 int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
 299
 300 const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
 301 IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
 302
 303 const char* dhcp_use_domains_to_string(DHCPUseDomains p) _const_;
 304 DHCPUseDomains dhcp_use_domains_from_string(const char *s) _pure_;
 305
 306 const char* lldp_mode_to_string(LLDPMode m) _const_;
 307 LLDPMode lldp_mode_from_string(const char *s) _pure_;