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_send_hostname;
 132         bool dhcp_broadcast;
 133         bool dhcp_critical;
 134         bool dhcp_use_dns;
 135         bool dhcp_use_ntp;
 136         bool dhcp_use_mtu;
 137         bool dhcp_use_routes;
 138         bool dhcp_use_timezone;
 139         bool dhcp_use_hostname;
 140         DHCPUseDomains dhcp_use_domains;
 141
 142         /* DHCP Server Support */
 143         bool dhcp_server;
 144         bool dhcp_server_emit_dns;
 145         struct in_addr *dhcp_server_dns;
 146         unsigned n_dhcp_server_dns;
 147         bool dhcp_server_emit_ntp;
 148         struct in_addr *dhcp_server_ntp;
 149         unsigned n_dhcp_server_ntp;
 150         bool dhcp_server_emit_router;
 151         bool dhcp_server_emit_timezone;
 152         char *dhcp_server_timezone;
 153         usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
 154         uint32_t dhcp_server_pool_offset;
 155         uint32_t dhcp_server_pool_size;
 156
 157         /* IPV4LL Support */
 158         AddressFamilyBoolean link_local;
 159         bool ipv4ll_route;
 160
 161         /* IPv6 prefix delegation support */
 162         bool router_prefix_delegation;
 163         usec_t router_lifetime_usec;
 164         uint8_t router_preference;
 165         bool router_managed;
 166         bool router_other_information;
 167
 168         /* Bridge Support */
 169         bool use_bpdu;
 170         bool hairpin;
 171         bool fast_leave;
 172         bool allow_port_to_be_root;
 173         bool unicast_flood;
 174         uint32_t cost;
 175         uint16_t priority;
 176
 177         bool use_br_vlan;
 178         uint16_t pvid;
 179         uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 180         uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 181
 182         AddressFamilyBoolean ip_forward;
 183         bool ip_masquerade;
 184
 185         int ipv6_accept_ra;
 186         int ipv6_dad_transmits;
 187         int ipv6_hop_limit;
 188         int ipv6_proxy_ndp;
 189         int proxy_arp;
 190
 191         bool ipv6_accept_ra_use_dns;
 192         bool active_slave;
 193         bool primary_slave;
 194         DHCPUseDomains ipv6_accept_ra_use_domains;
 195         uint32_t ipv6_accept_ra_route_table;
 196
 197         union in_addr_union ipv6_token;
 198         IPv6PrivacyExtensions ipv6_privacy_extensions;
 199
 200         struct ether_addr *mac;
 201         size_t mtu;
 202         int arp;
 203         bool unmanaged;
 204         uint32_t iaid;
 205         DUID duid;
 206
 207         LLDPMode lldp_mode; /* LLDP reception */
 208         LLDPEmit lldp_emit; /* LLDP transmission */
 209
 210         LIST_HEAD(Address, static_addresses);
 211         LIST_HEAD(Route, static_routes);
 212         LIST_HEAD(FdbEntry, static_fdb_entries);
 213         LIST_HEAD(IPv6ProxyNDPAddress, ipv6_proxy_ndp_addresses);
 214         LIST_HEAD(AddressLabel, address_labels);
 215         LIST_HEAD(Prefix, static_prefixes);
 216
 217         unsigned n_static_addresses;
 218         unsigned n_static_routes;
 219         unsigned n_static_fdb_entries;
 220         unsigned n_ipv6_proxy_ndp_addresses;
 221         unsigned n_address_labels;
 222         unsigned n_static_prefixes;
 223
 224         Hashmap *addresses_by_section;
 225         Hashmap *routes_by_section;
 226         Hashmap *fdb_entries_by_section;
 227         Hashmap *address_labels_by_section;
 228         Hashmap *prefixes_by_section;
 229
 230         struct in_addr_data *dns;
 231         unsigned n_dns;
 232
 233         char **search_domains, **route_domains, **ntp, **bind_carrier;
 234
 235         ResolveSupport llmnr;
 236         ResolveSupport mdns;
 237         DnssecMode dnssec_mode;
 238         Set *dnssec_negative_trust_anchors;
 239
 240         LIST_FIELDS(Network, networks);
 241 };
 242
 243 void network_free(Network *network);
 244
 245 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
 246 #define _cleanup_network_free_ _cleanup_(network_freep)
 247
 248 int network_load(Manager *manager);
 249
 250 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 251 int network_get(Manager *manager, struct udev_device *device, const char *ifname, const struct ether_addr *mac, Network **ret);
 252 int network_apply(Network *network, Link *link);
 253
 254 bool network_has_static_ipv6_addresses(Network *network);
 255
 256 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);
 257 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);
 258 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);
 259 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);
 260 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);
 261 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);
 262 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);
 263 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);
 264 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);
 265 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);
 266 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);
 267 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);
 268 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);
 269 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);
 270 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);
 271 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);
 272 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);
 273
 274 /* Legacy IPv4LL support */
 275 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);
 276
 277 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
 278
 279 extern const sd_bus_vtable network_vtable[];
 280
 281 int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
 282 int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
 283
 284 const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
 285 IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
 286
 287 const char* dhcp_use_domains_to_string(DHCPUseDomains p) _const_;
 288 DHCPUseDomains dhcp_use_domains_from_string(const char *s) _pure_;
 289
 290 const char* lldp_mode_to_string(LLDPMode m) _const_;
 291 LLDPMode lldp_mode_from_string(const char *s) _pure_;