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