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-util.h"
  38 #include "netdev/netdev.h"
  39
  40 #define DHCP_ROUTE_METRIC 1024
  41 #define IPV4LL_ROUTE_METRIC 2048
  42
  43 #define BRIDGE_VLAN_BITMAP_MAX 4096
  44 #define BRIDGE_VLAN_BITMAP_LEN (BRIDGE_VLAN_BITMAP_MAX / 32)
  45
  46 typedef enum DHCPClientIdentifier {
  47         DHCP_CLIENT_ID_MAC,
  48         DHCP_CLIENT_ID_DUID,
  49         _DHCP_CLIENT_ID_MAX,
  50         _DHCP_CLIENT_ID_INVALID = -1,
  51 } DHCPClientIdentifier;
  52
  53 typedef enum IPv6PrivacyExtensions {
  54         /* The values map to the kernel's /proc/sys/net/ipv6/conf/xxx/use_tempaddr values */
  55         IPV6_PRIVACY_EXTENSIONS_NO,
  56         IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC,
  57         IPV6_PRIVACY_EXTENSIONS_YES, /* aka prefer-temporary */
  58         _IPV6_PRIVACY_EXTENSIONS_MAX,
  59         _IPV6_PRIVACY_EXTENSIONS_INVALID = -1,
  60 } IPv6PrivacyExtensions;
  61
  62 typedef enum DHCPUseDomains {
  63         DHCP_USE_DOMAINS_NO,
  64         DHCP_USE_DOMAINS_YES,
  65         DHCP_USE_DOMAINS_ROUTE,
  66         _DHCP_USE_DOMAINS_MAX,
  67         _DHCP_USE_DOMAINS_INVALID = -1,
  68 } DHCPUseDomains;
  69
  70 typedef enum LLDPMode {
  71         LLDP_MODE_NO = 0,
  72         LLDP_MODE_YES = 1,
  73         LLDP_MODE_ROUTERS_ONLY = 2,
  74         _LLDP_MODE_MAX,
  75         _LLDP_MODE_INVALID = -1,
  76 } LLDPMode;
  77
  78 typedef struct DUID {
  79         /* Value of Type in [DHCP] section */
  80         DUIDType type;
  81
  82         uint8_t raw_data_len;
  83         uint8_t raw_data[MAX_DUID_LEN];
  84 } DUID;
  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
  94 DEFINE_TRIVIAL_CLEANUP_FUNC(NetworkConfigSection*, network_config_section_free);
  95 #define _cleanup_network_config_section_free_ _cleanup_(network_config_section_freep)
  96
  97 typedef struct Manager Manager;
  98
  99 struct Network {
 100         Manager *manager;
 101
 102         char *filename;
 103         char *name;
 104
 105         struct ether_addr *match_mac;
 106         char **match_path;
 107         char **match_driver;
 108         char **match_type;
 109         char **match_name;
 110
 111         Condition *match_host;
 112         Condition *match_virt;
 113         Condition *match_kernel;
 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_hostname;
 128         unsigned dhcp_route_metric;
 129         uint32_t dhcp_route_table;
 130         uint16_t dhcp_client_port;
 131         bool dhcp_anonymize;
 132         bool dhcp_send_hostname;
 133         bool dhcp_broadcast;
 134         bool dhcp_critical;
 135         bool dhcp_use_dns;
 136         bool dhcp_use_ntp;
 137         bool dhcp_use_mtu;
 138         bool dhcp_use_routes;
 139         bool dhcp_use_timezone;
 140         bool dhcp_use_hostname;
 141         DHCPUseDomains dhcp_use_domains;
 142
 143         /* DHCP Server Support */
 144         bool dhcp_server;
 145         bool dhcp_server_emit_dns;
 146         struct in_addr *dhcp_server_dns;
 147         unsigned n_dhcp_server_dns;
 148         bool dhcp_server_emit_ntp;
 149         struct in_addr *dhcp_server_ntp;
 150         unsigned n_dhcp_server_ntp;
 151         bool dhcp_server_emit_router;
 152         bool dhcp_server_emit_timezone;
 153         char *dhcp_server_timezone;
 154         usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
 155         uint32_t dhcp_server_pool_offset;
 156         uint32_t dhcp_server_pool_size;
 157
 158         /* IPV4LL Support */
 159         AddressFamilyBoolean link_local;
 160         bool ipv4ll_route;
 161
 162         /* IPv6 prefix delegation support */
 163         bool router_prefix_delegation;
 164         usec_t router_lifetime_usec;
 165         uint8_t router_preference;
 166         bool router_managed;
 167         bool router_other_information;
 168
 169         /* Bridge Support */
 170         bool use_bpdu;
 171         bool hairpin;
 172         bool fast_leave;
 173         bool allow_port_to_be_root;
 174         bool unicast_flood;
 175         uint32_t cost;
 176         uint16_t priority;
 177
 178         bool use_br_vlan;
 179         uint16_t pvid;
 180         uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 181         uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 182
 183         AddressFamilyBoolean ip_forward;
 184         bool ip_masquerade;
 185
 186         int ipv6_accept_ra;
 187         int ipv6_dad_transmits;
 188         int ipv6_hop_limit;
 189         int ipv6_proxy_ndp;
 190         int proxy_arp;
 191
 192         bool ipv6_accept_ra_use_dns;
 193         bool active_slave;
 194         bool primary_slave;
 195         DHCPUseDomains ipv6_accept_ra_use_domains;
 196         uint32_t ipv6_accept_ra_route_table;
 197
 198         union in_addr_union ipv6_token;
 199         IPv6PrivacyExtensions ipv6_privacy_extensions;
 200
 201         struct ether_addr *mac;
 202         size_t mtu;
 203         int arp;
 204         bool unmanaged;
 205         bool configure_without_carrier;
 206         uint32_t iaid;
 207         DUID duid;
 208
 209         LLDPMode lldp_mode; /* LLDP reception */
 210         LLDPEmit lldp_emit; /* LLDP transmission */
 211
 212         LIST_HEAD(Address, static_addresses);
 213         LIST_HEAD(Route, static_routes);
 214         LIST_HEAD(FdbEntry, static_fdb_entries);
 215         LIST_HEAD(IPv6ProxyNDPAddress, ipv6_proxy_ndp_addresses);
 216         LIST_HEAD(AddressLabel, address_labels);
 217         LIST_HEAD(Prefix, static_prefixes);
 218
 219         unsigned n_static_addresses;
 220         unsigned n_static_routes;
 221         unsigned n_static_fdb_entries;
 222         unsigned n_ipv6_proxy_ndp_addresses;
 223         unsigned n_address_labels;
 224         unsigned n_static_prefixes;
 225
 226         Hashmap *addresses_by_section;
 227         Hashmap *routes_by_section;
 228         Hashmap *fdb_entries_by_section;
 229         Hashmap *address_labels_by_section;
 230         Hashmap *prefixes_by_section;
 231
 232         struct in_addr_data *dns;
 233         unsigned n_dns;
 234
 235         char **search_domains, **route_domains, **ntp, **bind_carrier;
 236
 237         ResolveSupport llmnr;
 238         ResolveSupport mdns;
 239         DnssecMode dnssec_mode;
 240         Set *dnssec_negative_trust_anchors;
 241
 242         LIST_FIELDS(Network, networks);
 243 };
 244
 245 void network_free(Network *network);
 246
 247 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
 248 #define _cleanup_network_free_ _cleanup_(network_freep)
 249
 250 int network_load(Manager *manager);
 251
 252 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 253 int network_get(Manager *manager, struct udev_device *device, const char *ifname, const struct ether_addr *mac, Network **ret);
 254 int network_apply(Network *network, Link *link);
 255 void network_apply_anonymize_if_set(Network *network);
 256
 257 bool network_has_static_ipv6_addresses(Network *network);
 258
 259 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);
 260 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);
 261 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);
 262 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);
 263 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);
 264 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);
 265 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);
 266 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);
 267 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);
 268 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);
 269 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);
 270 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);
 271 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);
 272 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);
 273 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);
 274 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);
 275 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);
 276
 277 /* Legacy IPv4LL support */
 278 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);
 279
 280 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
 281
 282 extern const sd_bus_vtable network_vtable[];
 283
 284 int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
 285 int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
 286
 287 const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
 288 IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
 289
 290 const char* dhcp_use_domains_to_string(DHCPUseDomains p) _const_;
 291 DHCPUseDomains dhcp_use_domains_from_string(const char *s) _pure_;
 292
 293 const char* lldp_mode_to_string(LLDPMode m) _const_;
 294 LLDPMode lldp_mode_from_string(const char *s) _pure_;