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-brvlan.h"
  32 #include "networkd-fdb.h"
  33 #include "networkd-lldp-tx.h"
  34 #include "networkd-ipv6-proxy-ndp.h"
  35 #include "networkd-route.h"
  36 #include "networkd-util.h"
  37 #include "netdev/netdev.h"
  38
  39 #define DHCP_ROUTE_METRIC 1024
  40 #define IPV4LL_ROUTE_METRIC 2048
  41
  42 #define BRIDGE_VLAN_BITMAP_MAX 4096
  43 #define BRIDGE_VLAN_BITMAP_LEN (BRIDGE_VLAN_BITMAP_MAX / 32)
  44
  45 typedef enum DCHPClientIdentifier {
  46         DHCP_CLIENT_ID_MAC,
  47         DHCP_CLIENT_ID_DUID,
  48         _DHCP_CLIENT_ID_MAX,
  49         _DHCP_CLIENT_ID_INVALID = -1,
  50 } DCHPClientIdentifier;
  51
  52 typedef enum IPv6PrivacyExtensions {
  53         /* The values map to the kernel's /proc/sys/net/ipv6/conf/xxx/use_tempaddr values */
  54         IPV6_PRIVACY_EXTENSIONS_NO,
  55         IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC,
  56         IPV6_PRIVACY_EXTENSIONS_YES, /* aka prefer-temporary */
  57         _IPV6_PRIVACY_EXTENSIONS_MAX,
  58         _IPV6_PRIVACY_EXTENSIONS_INVALID = -1,
  59 } IPv6PrivacyExtensions;
  60
  61 typedef enum DHCPUseDomains {
  62         DHCP_USE_DOMAINS_NO,
  63         DHCP_USE_DOMAINS_YES,
  64         DHCP_USE_DOMAINS_ROUTE,
  65         _DHCP_USE_DOMAINS_MAX,
  66         _DHCP_USE_DOMAINS_INVALID = -1,
  67 } DHCPUseDomains;
  68
  69 typedef enum LLDPMode {
  70         LLDP_MODE_NO = 0,
  71         LLDP_MODE_YES = 1,
  72         LLDP_MODE_ROUTERS_ONLY = 2,
  73         _LLDP_MODE_MAX,
  74         _LLDP_MODE_INVALID = -1,
  75 } LLDPMode;
  76
  77 typedef struct DUID {
  78         /* Value of Type in [DHCP] section */
  79         DUIDType type;
  80
  81         uint8_t raw_data_len;
  82         uint8_t raw_data[MAX_DUID_LEN];
  83 } DUID;
  84
  85 typedef struct NetworkConfigSection {
  86         unsigned line;
  87         char filename[];
  88 } NetworkConfigSection;
  89
  90 int network_config_section_new(const char *filename, unsigned line, NetworkConfigSection **s);
  91 void network_config_section_free(NetworkConfigSection *network);
  92
  93 DEFINE_TRIVIAL_CLEANUP_FUNC(NetworkConfigSection*, network_config_section_free);
  94 #define _cleanup_network_config_section_free_ _cleanup_(network_config_section_freep)
  95
  96 typedef struct Manager Manager;
  97
  98 struct Network {
  99         Manager *manager;
 100
 101         char *filename;
 102         char *name;
 103
 104         struct ether_addr *match_mac;
 105         char **match_path;
 106         char **match_driver;
 107         char **match_type;
 108         char **match_name;
 109
 110         Condition *match_host;
 111         Condition *match_virt;
 112         Condition *match_kernel;
 113         Condition *match_arch;
 114
 115         char *description;
 116
 117         NetDev *bridge;
 118         NetDev *bond;
 119         NetDev *vrf;
 120         Hashmap *stacked_netdevs;
 121
 122         /* DHCP Client Support */
 123         AddressFamilyBoolean dhcp;
 124         DCHPClientIdentifier dhcp_client_identifier;
 125         char *dhcp_vendor_class_identifier;
 126         char *dhcp_hostname;
 127         unsigned dhcp_route_metric;
 128         uint32_t dhcp_route_table;
 129         uint16_t dhcp_client_port;
 130         bool dhcp_send_hostname;
 131         bool dhcp_broadcast;
 132         bool dhcp_critical;
 133         bool dhcp_use_dns;
 134         bool dhcp_use_ntp;
 135         bool dhcp_use_mtu;
 136         bool dhcp_use_routes;
 137         bool dhcp_use_timezone;
 138         bool dhcp_use_hostname;
 139         DHCPUseDomains dhcp_use_domains;
 140
 141         /* DHCP Server Support */
 142         bool dhcp_server;
 143         bool dhcp_server_emit_dns;
 144         struct in_addr *dhcp_server_dns;
 145         unsigned n_dhcp_server_dns;
 146         bool dhcp_server_emit_ntp;
 147         struct in_addr *dhcp_server_ntp;
 148         unsigned n_dhcp_server_ntp;
 149         bool dhcp_server_emit_router;
 150         bool dhcp_server_emit_timezone;
 151         char *dhcp_server_timezone;
 152         usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
 153         uint32_t dhcp_server_pool_offset;
 154         uint32_t dhcp_server_pool_size;
 155
 156         /* IPV4LL Support */
 157         AddressFamilyBoolean link_local;
 158         bool ipv4ll_route;
 159
 160         /* Bridge Support */
 161         bool use_bpdu;
 162         bool hairpin;
 163         bool fast_leave;
 164         bool allow_port_to_be_root;
 165         bool unicast_flood;
 166         unsigned cost;
 167
 168         bool use_br_vlan;
 169         uint16_t pvid;
 170         uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 171         uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 172
 173         AddressFamilyBoolean ip_forward;
 174         bool ip_masquerade;
 175
 176         int ipv6_accept_ra;
 177         int ipv6_dad_transmits;
 178         int ipv6_hop_limit;
 179         int proxy_arp;
 180
 181         bool ipv6_accept_ra_use_dns;
 182         bool active_slave;
 183         bool primary_slave;
 184         DHCPUseDomains ipv6_accept_ra_use_domains;
 185         uint32_t ipv6_accept_ra_route_table;
 186
 187         union in_addr_union ipv6_token;
 188         IPv6PrivacyExtensions ipv6_privacy_extensions;
 189
 190         struct ether_addr *mac;
 191         size_t mtu;
 192         int arp;
 193         bool unmanaged;
 194         uint32_t iaid;
 195         DUID duid;
 196
 197         LLDPMode lldp_mode; /* LLDP reception */
 198         LLDPEmit lldp_emit; /* LLDP transmission */
 199
 200         LIST_HEAD(Address, static_addresses);
 201         LIST_HEAD(Route, static_routes);
 202         LIST_HEAD(FdbEntry, static_fdb_entries);
 203         LIST_HEAD(IPv6ProxyNDPAddress, ipv6_proxy_ndp_addresses);
 204
 205         unsigned n_static_addresses;
 206         unsigned n_static_routes;
 207         unsigned n_static_fdb_entries;
 208         unsigned n_ipv6_proxy_ndp_addresses;
 209
 210         Hashmap *addresses_by_section;
 211         Hashmap *routes_by_section;
 212         Hashmap *fdb_entries_by_section;
 213
 214         struct in_addr_data *dns;
 215         unsigned n_dns;
 216
 217         char **search_domains, **route_domains, **ntp, **bind_carrier;
 218
 219         ResolveSupport llmnr;
 220         ResolveSupport mdns;
 221         DnssecMode dnssec_mode;
 222         Set *dnssec_negative_trust_anchors;
 223
 224         LIST_FIELDS(Network, networks);
 225 };
 226
 227 void network_free(Network *network);
 228
 229 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
 230 #define _cleanup_network_free_ _cleanup_(network_freep)
 231
 232 int network_load(Manager *manager);
 233
 234 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 235 int network_get(Manager *manager, struct udev_device *device, const char *ifname, const struct ether_addr *mac, Network **ret);
 236 int network_apply(Network *network, Link *link);
 237
 238 bool network_has_static_ipv6_addresses(Network *network);
 239
 240 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);
 241 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);
 242 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);
 243 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);
 244 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);
 245 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);
 246 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);
 247 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);
 248 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);
 249 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);
 250 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);
 251 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);
 252 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);
 253 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);
 254 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);
 255 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);
 256 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);
 257
 258 /* Legacy IPv4LL support */
 259 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);
 260
 261 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
 262
 263 extern const sd_bus_vtable network_vtable[];
 264
 265 int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
 266 int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
 267
 268 const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
 269 IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
 270
 271 const char* dhcp_use_domains_to_string(DHCPUseDomains p) _const_;
 272 DHCPUseDomains dhcp_use_domains_from_string(const char *s) _pure_;
 273
 274 const char* lldp_mode_to_string(LLDPMode m) _const_;
 275 LLDPMode lldp_mode_from_string(const char *s) _pure_;