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-netdev.h"
  35 #include "networkd-route.h"
  36 #include "networkd-util.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         bool dhcp_use_dns;
 116         bool dhcp_use_ntp;
 117         bool dhcp_use_mtu;
 118         bool dhcp_use_hostname;
 119         DHCPUseDomains dhcp_use_domains;
 120         bool dhcp_send_hostname;
 121         bool dhcp_broadcast;
 122         bool dhcp_critical;
 123         bool dhcp_use_routes;
 124         bool dhcp_use_timezone;
 125         unsigned dhcp_route_metric;
 126
 127         /* DHCP Server Support */
 128         bool dhcp_server;
 129         bool dhcp_server_emit_dns;
 130         struct in_addr *dhcp_server_dns;
 131         unsigned n_dhcp_server_dns;
 132         bool dhcp_server_emit_ntp;
 133         struct in_addr *dhcp_server_ntp;
 134         unsigned n_dhcp_server_ntp;
 135         bool dhcp_server_emit_router;
 136         bool dhcp_server_emit_timezone;
 137         char *dhcp_server_timezone;
 138         usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
 139         uint32_t dhcp_server_pool_offset;
 140         uint32_t dhcp_server_pool_size;
 141
 142         /* IPV4LL Support */
 143         AddressFamilyBoolean link_local;
 144         bool ipv4ll_route;
 145
 146         /* Bridge Support */
 147         bool use_bpdu;
 148         bool hairpin;
 149         bool fast_leave;
 150         bool allow_port_to_be_root;
 151         bool unicast_flood;
 152         unsigned cost;
 153
 154         bool use_br_vlan;
 155         uint16_t pvid;
 156         uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 157         uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 158
 159         AddressFamilyBoolean ip_forward;
 160         bool ip_masquerade;
 161
 162         int ipv6_accept_ra;
 163         int ipv6_dad_transmits;
 164         int ipv6_hop_limit;
 165         int proxy_arp;
 166
 167         bool ipv6_accept_ra_use_dns;
 168         DHCPUseDomains ipv6_accept_ra_use_domains;
 169
 170         union in_addr_union ipv6_token;
 171         IPv6PrivacyExtensions ipv6_privacy_extensions;
 172
 173         struct ether_addr *mac;
 174         unsigned mtu;
 175         int arp;
 176         uint32_t iaid;
 177         DUID duid;
 178
 179         LLDPMode lldp_mode; /* LLDP reception */
 180         LLDPEmit lldp_emit; /* LLDP transmission */
 181
 182         LIST_HEAD(Address, static_addresses);
 183         LIST_HEAD(Route, static_routes);
 184         LIST_HEAD(FdbEntry, static_fdb_entries);
 185
 186         unsigned n_static_addresses;
 187         unsigned n_static_routes;
 188         unsigned n_static_fdb_entries;
 189
 190         Hashmap *addresses_by_section;
 191         Hashmap *routes_by_section;
 192         Hashmap *fdb_entries_by_section;
 193
 194         char **search_domains, **route_domains, **dns, **ntp, **bind_carrier;
 195
 196         ResolveSupport llmnr;
 197         ResolveSupport mdns;
 198         DnssecMode dnssec_mode;
 199         Set *dnssec_negative_trust_anchors;
 200
 201         LIST_FIELDS(Network, networks);
 202 };
 203
 204 void network_free(Network *network);
 205
 206 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
 207 #define _cleanup_network_free_ _cleanup_(network_freep)
 208
 209 int network_load(Manager *manager);
 210
 211 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 212 int network_get(Manager *manager, struct udev_device *device, const char *ifname, const struct ether_addr *mac, Network **ret);
 213 int network_apply(Manager *manager, Network *network, Link *link);
 214
 215 bool network_has_static_ipv6_addresses(Network *network);
 216
 217 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);
 218 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);
 219 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);
 220 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);
 221 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);
 222 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);
 223 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);
 224 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);
 225 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);
 226 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);
 227 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);
 228 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);
 229 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);
 230 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);
 231
 232 /* Legacy IPv4LL support */
 233 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);
 234
 235 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
 236
 237 extern const sd_bus_vtable network_vtable[];
 238
 239 int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
 240 int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
 241
 242 const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
 243 IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
 244
 245 const char* dhcp_use_domains_to_string(DHCPUseDomains p) _const_;
 246 DHCPUseDomains dhcp_use_domains_from_string(const char *s) _pure_;
 247
 248 const char* lldp_mode_to_string(LLDPMode m) _const_;
 249 LLDPMode lldp_mode_from_string(const char *s) _pure_;