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 Manager Manager;
  86
  87 struct Network {
  88         Manager *manager;
  89
  90         char *filename;
  91         char *name;
  92
  93         struct ether_addr *match_mac;
  94         char **match_path;
  95         char **match_driver;
  96         char **match_type;
  97         char **match_name;
  98
  99         Condition *match_host;
 100         Condition *match_virt;
 101         Condition *match_kernel;
 102         Condition *match_arch;
 103
 104         char *description;
 105
 106         NetDev *bridge;
 107         NetDev *bond;
 108         NetDev *vrf;
 109         Hashmap *stacked_netdevs;
 110
 111         /* DHCP Client Support */
 112         AddressFamilyBoolean dhcp;
 113         DCHPClientIdentifier dhcp_client_identifier;
 114         char *dhcp_vendor_class_identifier;
 115         char *dhcp_hostname;
 116         unsigned dhcp_route_metric;
 117         uint32_t dhcp_route_table;
 118         uint16_t dhcp_client_port;
 119         bool dhcp_send_hostname;
 120         bool dhcp_broadcast;
 121         bool dhcp_critical;
 122         bool dhcp_use_dns;
 123         bool dhcp_use_ntp;
 124         bool dhcp_use_mtu;
 125         bool dhcp_use_routes;
 126         bool dhcp_use_timezone;
 127         bool dhcp_use_hostname;
 128         DHCPUseDomains dhcp_use_domains;
 129
 130         /* DHCP Server Support */
 131         bool dhcp_server;
 132         bool dhcp_server_emit_dns;
 133         struct in_addr *dhcp_server_dns;
 134         unsigned n_dhcp_server_dns;
 135         bool dhcp_server_emit_ntp;
 136         struct in_addr *dhcp_server_ntp;
 137         unsigned n_dhcp_server_ntp;
 138         bool dhcp_server_emit_router;
 139         bool dhcp_server_emit_timezone;
 140         char *dhcp_server_timezone;
 141         usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
 142         uint32_t dhcp_server_pool_offset;
 143         uint32_t dhcp_server_pool_size;
 144
 145         /* IPV4LL Support */
 146         AddressFamilyBoolean link_local;
 147         bool ipv4ll_route;
 148
 149         /* Bridge Support */
 150         bool use_bpdu;
 151         bool hairpin;
 152         bool fast_leave;
 153         bool allow_port_to_be_root;
 154         bool unicast_flood;
 155         unsigned cost;
 156
 157         bool use_br_vlan;
 158         uint16_t pvid;
 159         uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 160         uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
 161
 162         AddressFamilyBoolean ip_forward;
 163         bool ip_masquerade;
 164
 165         int ipv6_accept_ra;
 166         int ipv6_dad_transmits;
 167         int ipv6_hop_limit;
 168         int proxy_arp;
 169
 170         bool ipv6_accept_ra_use_dns;
 171         bool active_slave;
 172         bool primary_slave;
 173         DHCPUseDomains ipv6_accept_ra_use_domains;
 174         uint32_t ipv6_accept_ra_route_table;
 175
 176         union in_addr_union ipv6_token;
 177         IPv6PrivacyExtensions ipv6_privacy_extensions;
 178
 179         struct ether_addr *mac;
 180         size_t mtu;
 181         int arp;
 182         bool unmanaged;
 183         uint32_t iaid;
 184         DUID duid;
 185
 186         LLDPMode lldp_mode; /* LLDP reception */
 187         LLDPEmit lldp_emit; /* LLDP transmission */
 188
 189         LIST_HEAD(Address, static_addresses);
 190         LIST_HEAD(Route, static_routes);
 191         LIST_HEAD(FdbEntry, static_fdb_entries);
 192         LIST_HEAD(IPv6ProxyNDPAddress, ipv6_proxy_ndp_addresses);
 193
 194         unsigned n_static_addresses;
 195         unsigned n_static_routes;
 196         unsigned n_static_fdb_entries;
 197         unsigned n_ipv6_proxy_ndp_addresses;
 198
 199         Hashmap *addresses_by_section;
 200         Hashmap *routes_by_section;
 201         Hashmap *fdb_entries_by_section;
 202
 203         struct in_addr_data *dns;
 204         unsigned n_dns;
 205
 206         char **search_domains, **route_domains, **ntp, **bind_carrier;
 207
 208         ResolveSupport llmnr;
 209         ResolveSupport mdns;
 210         DnssecMode dnssec_mode;
 211         Set *dnssec_negative_trust_anchors;
 212
 213         LIST_FIELDS(Network, networks);
 214 };
 215
 216 void network_free(Network *network);
 217
 218 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
 219 #define _cleanup_network_free_ _cleanup_(network_freep)
 220
 221 int network_load(Manager *manager);
 222
 223 int network_get_by_name(Manager *manager, const char *name, Network **ret);
 224 int network_get(Manager *manager, struct udev_device *device, const char *ifname, const struct ether_addr *mac, Network **ret);
 225 int network_apply(Network *network, Link *link);
 226
 227 bool network_has_static_ipv6_addresses(Network *network);
 228
 229 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);
 230 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);
 231 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);
 232 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);
 233 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);
 234 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);
 235 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);
 236 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);
 237 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);
 238 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);
 239 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);
 240 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);
 241 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);
 242 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);
 243 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);
 244 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);
 245 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);
 246
 247 /* Legacy IPv4LL support */
 248 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);
 249
 250 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
 251
 252 extern const sd_bus_vtable network_vtable[];
 253
 254 int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
 255 int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
 256
 257 const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
 258 IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
 259
 260 const char* dhcp_use_domains_to_string(DHCPUseDomains p) _const_;
 261 DHCPUseDomains dhcp_use_domains_from_string(const char *s) _pure_;
 262
 263 const char* lldp_mode_to_string(LLDPMode m) _const_;
 264 LLDPMode lldp_mode_from_string(const char *s) _pure_;