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