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 DCHPClientIdentifier {
  47         DHCP_CLIENT_ID_MAC,
  48         DHCP_CLIENT_ID_DUID,
  49         _DHCP_CLIENT_ID_MAX,
  50         _DHCP_CLIENT_ID_INVALID = -1,
  51 } DCHPClientIdentifier;
  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         DCHPClientIdentifier 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         /* Bridge Support */
 162         bool use_bpdu;
 163         bool hairpin;
 164         bool fast_leave;
 165         bool allow_port_to_be_root;
 166         bool unicast_flood;
 167         uint32_t cost;
 168         uint16_t priority;
 169
 170         bool use_br_vlan;
 171         uint16_t pvid;
 172         uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 173         uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 174
 175         AddressFamilyBoolean ip_forward;
 176         bool ip_masquerade;
 177
 178         int ipv6_accept_ra;
 179         int ipv6_dad_transmits;
 180         int ipv6_hop_limit;
 181         int ipv6_proxy_ndp;
 182         int proxy_arp;
 183
 184         bool ipv6_accept_ra_use_dns;
 185         bool active_slave;
 186         bool primary_slave;
 187         DHCPUseDomains ipv6_accept_ra_use_domains;
 188         uint32_t ipv6_accept_ra_route_table;
 189
 190         union in_addr_union ipv6_token;
 191         IPv6PrivacyExtensions ipv6_privacy_extensions;
 192
 193         struct ether_addr *mac;
 194         size_t mtu;
 195         int arp;
 196         bool unmanaged;
 197         uint32_t iaid;
 198         DUID duid;
 199
 200         LLDPMode lldp_mode; /* LLDP reception */
 201         LLDPEmit lldp_emit; /* LLDP transmission */
 202
 203         LIST_HEAD(Address, static_addresses);
 204         LIST_HEAD(Route, static_routes);
 205         LIST_HEAD(FdbEntry, static_fdb_entries);
 206         LIST_HEAD(IPv6ProxyNDPAddress, ipv6_proxy_ndp_addresses);
 207         LIST_HEAD(AddressLabel, address_labels);
 208
 209         unsigned n_static_addresses;
 210         unsigned n_static_routes;
 211         unsigned n_static_fdb_entries;
 212         unsigned n_ipv6_proxy_ndp_addresses;
 213         unsigned n_address_labels;
 214
 215         Hashmap *addresses_by_section;
 216         Hashmap *routes_by_section;
 217         Hashmap *fdb_entries_by_section;
 218         Hashmap *address_labels_by_section;
 219
 220         struct in_addr_data *dns;
 221         unsigned n_dns;
 222
 223         char **search_domains, **route_domains, **ntp, **bind_carrier;
 224
 225         ResolveSupport llmnr;
 226         ResolveSupport mdns;
 227         DnssecMode dnssec_mode;
 228         Set *dnssec_negative_trust_anchors;
 229
 230         LIST_FIELDS(Network, networks);
 231 };
 232
 233 void network_free(Network *network);
 234
 235 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
 236 #define _cleanup_network_free_ _cleanup_(network_freep)
 237
 238 int network_load(Manager *manager);
 239
 240 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 241 int network_get(Manager *manager, struct udev_device *device, const char *ifname, const struct ether_addr *mac, Network **ret);
 242 int network_apply(Network *network, Link *link);
 243
 244 bool network_has_static_ipv6_addresses(Network *network);
 245
 246 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);
 247 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);
 248 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);
 249 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);
 250 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);
 251 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);
 252 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);
 253 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);
 254 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);
 255 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);
 256 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);
 257 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);
 258 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);
 259 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);
 260 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);
 261 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);
 262 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);
 263
 264 /* Legacy IPv4LL support */
 265 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);
 266
 267 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
 268
 269 extern const sd_bus_vtable network_vtable[];
 270
 271 int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
 272 int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
 273
 274 const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
 275 IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
 276
 277 const char* dhcp_use_domains_to_string(DHCPUseDomains p) _const_;
 278 DHCPUseDomains dhcp_use_domains_from_string(const char *s) _pure_;
 279
 280 const char* lldp_mode_to_string(LLDPMode m) _const_;
 281 LLDPMode lldp_mode_from_string(const char *s) _pure_;