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         DHCPUseDomains dhcp_use_domains;
 143
 144         /* DHCP Server Support */
 145         bool dhcp_server;
 146         bool dhcp_server_emit_dns;
 147         struct in_addr *dhcp_server_dns;
 148         unsigned n_dhcp_server_dns;
 149         bool dhcp_server_emit_ntp;
 150         struct in_addr *dhcp_server_ntp;
 151         unsigned n_dhcp_server_ntp;
 152         bool dhcp_server_emit_router;
 153         bool dhcp_server_emit_timezone;
 154         char *dhcp_server_timezone;
 155         usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
 156         uint32_t dhcp_server_pool_offset;
 157         uint32_t dhcp_server_pool_size;
 158
 159         /* IPV4LL Support */
 160         AddressFamilyBoolean link_local;
 161         bool ipv4ll_route;
 162
 163         /* IPv6 prefix delegation support */
 164         bool router_prefix_delegation;
 165         usec_t router_lifetime_usec;
 166         uint8_t router_preference;
 167         bool router_managed;
 168         bool router_other_information;
 169         usec_t router_dns_lifetime_usec;
 170         struct in6_addr *router_dns;
 171         unsigned n_router_dns;
 172
 173         /* Bridge Support */
 174         bool use_bpdu;
 175         bool hairpin;
 176         bool fast_leave;
 177         bool allow_port_to_be_root;
 178         bool unicast_flood;
 179         uint32_t cost;
 180         uint16_t priority;
 181
 182         bool use_br_vlan;
 183         uint16_t pvid;
 184         uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 185         uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 186
 187         AddressFamilyBoolean ip_forward;
 188         bool ip_masquerade;
 189
 190         int ipv6_accept_ra;
 191         int ipv6_dad_transmits;
 192         int ipv6_hop_limit;
 193         int ipv6_proxy_ndp;
 194         int proxy_arp;
 195
 196         bool ipv6_accept_ra_use_dns;
 197         bool active_slave;
 198         bool primary_slave;
 199         DHCPUseDomains ipv6_accept_ra_use_domains;
 200         uint32_t ipv6_accept_ra_route_table;
 201
 202         union in_addr_union ipv6_token;
 203         IPv6PrivacyExtensions ipv6_privacy_extensions;
 204
 205         struct ether_addr *mac;
 206         size_t mtu;
 207         int arp;
 208         bool unmanaged;
 209         bool configure_without_carrier;
 210         uint32_t iaid;
 211         DUID duid;
 212
 213         LLDPMode lldp_mode; /* LLDP reception */
 214         LLDPEmit lldp_emit; /* LLDP transmission */
 215
 216         LIST_HEAD(Address, static_addresses);
 217         LIST_HEAD(Route, static_routes);
 218         LIST_HEAD(FdbEntry, static_fdb_entries);
 219         LIST_HEAD(IPv6ProxyNDPAddress, ipv6_proxy_ndp_addresses);
 220         LIST_HEAD(AddressLabel, address_labels);
 221         LIST_HEAD(Prefix, static_prefixes);
 222         LIST_HEAD(RoutingPolicyRule, rules);
 223
 224         unsigned n_static_addresses;
 225         unsigned n_static_routes;
 226         unsigned n_static_fdb_entries;
 227         unsigned n_ipv6_proxy_ndp_addresses;
 228         unsigned n_address_labels;
 229         unsigned n_static_prefixes;
 230         unsigned n_rules;
 231
 232         Hashmap *addresses_by_section;
 233         Hashmap *routes_by_section;
 234         Hashmap *fdb_entries_by_section;
 235         Hashmap *address_labels_by_section;
 236         Hashmap *prefixes_by_section;
 237         Hashmap *rules_by_section;
 238
 239         struct in_addr_data *dns;
 240         unsigned n_dns;
 241
 242         char **search_domains, **route_domains, **ntp, **bind_carrier;
 243
 244         ResolveSupport llmnr;
 245         ResolveSupport mdns;
 246         DnssecMode dnssec_mode;
 247         Set *dnssec_negative_trust_anchors;
 248
 249         LIST_FIELDS(Network, networks);
 250 };
 251
 252 void network_free(Network *network);
 253
 254 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
 255 #define _cleanup_network_free_ _cleanup_(network_freep)
 256
 257 int network_load(Manager *manager);
 258
 259 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 260 int network_get(Manager *manager, struct udev_device *device, const char *ifname, const struct ether_addr *mac, Network **ret);
 261 int network_apply(Network *network, Link *link);
 262 void network_apply_anonymize_if_set(Network *network);
 263
 264 bool network_has_static_ipv6_addresses(Network *network);
 265
 266 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);
 267 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);
 268 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);
 269 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);
 270 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);
 271 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);
 272 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);
 273 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);
 274 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);
 275 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);
 276 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);
 277 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);
 278 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);
 279 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);
 280 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);
 281 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);
 282 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);
 283 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);
 284
 285 /* Legacy IPv4LL support */
 286 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);
 287
 288 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
 289
 290 extern const sd_bus_vtable network_vtable[];
 291
 292 int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
 293 int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
 294
 295 const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
 296 IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
 297
 298 const char* dhcp_use_domains_to_string(DHCPUseDomains p) _const_;
 299 DHCPUseDomains dhcp_use_domains_from_string(const char *s) _pure_;
 300
 301 const char* lldp_mode_to_string(LLDPMode m) _const_;
 302 LLDPMode lldp_mode_from_string(const char *s) _pure_;