1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2013 Tom Gundersen <teg@jklm.no>
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.
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.
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/>.
24 #include <arpa/inet.h>
29 #include "sd-dhcp-client.h"
30 #include "sd-dhcp-server.h"
31 #include "sd-ipv4ll.h"
32 #include "sd-icmp6-nd.h"
33 #include "sd-dhcp6-client.h"
37 #include "rtnl-util.h"
41 #include "condition.h"
42 #include "in-addr-util.h"
44 #define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU
45 #define DHCP_ROUTE_METRIC 1024
46 #define IPV4LL_ROUTE_METRIC 2048
48 typedef struct NetDev NetDev;
49 typedef struct Network Network;
50 typedef struct Link Link;
51 typedef struct Address Address;
52 typedef struct Route Route;
53 typedef struct Manager Manager;
54 typedef struct AddressPool AddressPool;
55 typedef struct FdbEntry FdbEntry;
57 typedef enum AddressFamilyBoolean {
58 /* This is a bitmask, though it usually doesn't feel that way! */
59 ADDRESS_FAMILY_NO = 0,
60 ADDRESS_FAMILY_IPV4 = 1,
61 ADDRESS_FAMILY_IPV6 = 2,
62 ADDRESS_FAMILY_YES = 3,
63 _ADDRESS_FAMILY_BOOLEAN_MAX,
64 _ADDRESS_FAMILY_BOOLEAN_INVALID = -1,
65 } AddressFamilyBoolean;
67 typedef enum LLMNRSupport {
70 LLMNR_SUPPORT_RESOLVE,
72 _LLMNR_SUPPORT_INVALID = -1,
75 typedef enum LinkOperationalState {
77 LINK_OPERSTATE_NO_CARRIER,
78 LINK_OPERSTATE_DORMANT,
79 LINK_OPERSTATE_CARRIER,
80 LINK_OPERSTATE_DEGRADED,
81 LINK_OPERSTATE_ROUTABLE,
83 _LINK_OPERSTATE_INVALID = -1
84 } LinkOperationalState;
86 typedef enum DCHPClientIdentifier {
90 _DHCP_CLIENT_ID_INVALID = -1,
91 } DCHPClientIdentifier;
97 struct ether_addr *mac_addr;
100 LIST_FIELDS(FdbEntry, static_fdb_entries);
109 struct ether_addr *match_mac;
115 Condition *match_host;
116 Condition *match_virt;
117 Condition *match_kernel;
118 Condition *match_arch;
123 Hashmap *stacked_netdevs;
124 AddressFamilyBoolean dhcp;
125 DCHPClientIdentifier dhcp_client_identifier;
126 char *dhcp_vendor_class_identifier;
136 unsigned dhcp_route_metric;
137 AddressFamilyBoolean link_local;
139 union in_addr_union ipv6_token;
145 AddressFamilyBoolean ip_forward;
148 struct ether_addr *mac;
153 LIST_HEAD(Address, static_addresses);
154 LIST_HEAD(Route, static_routes);
155 LIST_HEAD(FdbEntry, static_fdb_entries);
157 Hashmap *addresses_by_section;
158 Hashmap *routes_by_section;
159 Hashmap *fdb_entries_by_section;
161 bool wildcard_domain;
162 char **domains, **dns, **ntp, **bind_carrier;
166 LIST_FIELDS(Network, networks);
174 unsigned char prefixlen;
179 struct in_addr broadcast;
180 struct ifa_cacheinfo cinfo;
182 union in_addr_union in_addr;
183 union in_addr_union in_addr_peer;
185 bool ip_masquerade_done;
187 LIST_FIELDS(Address, addresses);
195 unsigned char dst_prefixlen;
196 unsigned char src_prefixlen;
199 unsigned char protocol; /* RTPROT_* */
201 union in_addr_union in_addr;
202 union in_addr_union dst_addr;
203 union in_addr_union src_addr;
204 union in_addr_union prefsrc_addr;
206 LIST_FIELDS(Route, routes);
215 union in_addr_union in_addr;
217 LIST_FIELDS(AddressPool, address_pools);
223 sd_event_source *bus_retry_event_source;
225 sd_bus_slot *prepare_for_sleep_slot;
227 struct udev_monitor *udev_monitor;
228 sd_event_source *udev_event_source;
233 LinkOperationalState operational_state;
237 Hashmap *networks_by_name;
238 LIST_HEAD(Network, networks);
239 LIST_HEAD(AddressPool, address_pools);
241 usec_t network_dirs_ts_usec;
244 extern const char* const network_dirs[];
248 extern const sd_bus_vtable manager_vtable[];
250 int manager_new(Manager **ret);
251 void manager_free(Manager *m);
253 int manager_connect_bus(Manager *m);
254 int manager_run(Manager *m);
256 int manager_load_config(Manager *m);
257 bool manager_should_reload(Manager *m);
259 int manager_rtnl_enumerate_links(Manager *m);
260 int manager_rtnl_enumerate_addresses(Manager *m);
262 int manager_send_changed(Manager *m, const char *property, ...) _sentinel_;
263 int manager_save(Manager *m);
265 int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
267 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
268 #define _cleanup_manager_free_ _cleanup_(manager_freep)
272 int network_load(Manager *manager);
274 void network_free(Network *network);
276 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
277 #define _cleanup_network_free_ _cleanup_(network_freep)
279 int network_get_by_name(Manager *manager, const char *name, Network **ret);
280 int network_get(Manager *manager, struct udev_device *device,
281 const char *ifname, const struct ether_addr *mac,
283 int network_apply(Manager *manager, Network *network, Link *link);
285 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
286 const char *section, unsigned section_line, const char *lvalue,
287 int ltype, const char *rvalue, void *data, void *userdata);
289 int config_parse_domains(const char *unit,
290 const char *filename,
293 unsigned section_line,
300 int config_parse_tunnel(const char *unit,
301 const char *filename,
304 unsigned section_line,
311 int config_parse_tunnel_address(const char *unit,
312 const char *filename,
315 unsigned section_line,
322 int config_parse_vxlan_group_address(const char *unit,
323 const char *filename,
326 unsigned section_line,
333 extern const sd_bus_vtable network_vtable[];
335 int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
336 int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
339 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
342 int route_new_static(Network *network, unsigned section, Route **ret);
343 int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
344 void route_free(Route *route);
345 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
346 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
349 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
350 #define _cleanup_route_free_ _cleanup_(route_freep)
352 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
353 const char *section, unsigned section_line, const char *lvalue,
354 int ltype, const char *rvalue, void *data, void *userdata);
356 int config_parse_destination(const char *unit, const char *filename, unsigned line,
357 const char *section, unsigned section_line, const char *lvalue,
358 int ltype, const char *rvalue, void *data, void *userdata);
360 int config_parse_route_priority(const char *unit, const char *filename, unsigned line,
361 const char *section, unsigned section_line, const char *lvalue,
362 int ltype, const char *rvalue, void *data, void *userdata);
364 int config_parse_route_scope(const char *unit, const char *filename, unsigned line,
365 const char *section, unsigned section_line, const char *lvalue,
366 int ltype, const char *rvalue, void *data, void *userdata);
368 int address_new_static(Network *network, unsigned section, Address **ret);
369 int address_new_dynamic(Address **ret);
370 void address_free(Address *address);
371 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
372 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
373 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
374 int address_establish(Address *address, Link *link);
375 int address_release(Address *address, Link *link);
376 bool address_equal(Address *a1, Address *a2);
378 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
379 #define _cleanup_address_free_ _cleanup_(address_freep)
381 int config_parse_address(const char *unit, const char *filename, unsigned line,
382 const char *section, unsigned section_line, const char *lvalue,
383 int ltype, const char *rvalue, void *data, void *userdata);
385 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
386 const char *section, unsigned section_line, const char *lvalue,
387 int ltype, const char *rvalue, void *data, void *userdata);
389 int config_parse_label(const char *unit, const char *filename, unsigned line,
390 const char *section, unsigned section_line, const char *lvalue,
391 int ltype, const char *rvalue, void *data, void *userdata);
393 /* Forwarding database table. */
394 int fdb_entry_configure(Link *const link, FdbEntry *const fdb_entry);
395 void fdb_entry_free(FdbEntry *fdb_entry);
396 int fdb_entry_new_static(Network *const network, const unsigned section, FdbEntry **ret);
398 DEFINE_TRIVIAL_CLEANUP_FUNC(FdbEntry*, fdb_entry_free);
399 #define _cleanup_fdbentry_free_ _cleanup_(fdb_entry_freep)
401 int config_parse_fdb_hwaddr(const char *unit, const char *filename, unsigned line,
402 const char *section, unsigned section_line, const char *lvalue,
403 int ltype, const char *rvalue, void *data, void *userdata);
405 int config_parse_fdb_vlan_id(const char *unit, const char *filename, unsigned line,
406 const char *section, unsigned section_line, const char *lvalue,
407 int ltype, const char *rvalue, void *data, void *userdata);
411 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
412 const char *section, unsigned section_line, const char *lvalue,
413 int ltype, const char *rvalue, void *data, void *userdata);
414 int config_parse_dhcp_client_identifier(const char *unit, const char *filename, unsigned line,
415 const char *section, unsigned section_line, const char *lvalue,
416 int ltype, const char *rvalue, void *data, void *userdata);
418 /* IPv4LL support (legacy) */
420 int config_parse_ipv4ll(const char *unit, const char *filename, unsigned line,
421 const char *section, unsigned section_line, const char *lvalue,
422 int ltype, const char *rvalue, void *data, void *userdata);
425 int config_parse_ipv6token(const char *unit, const char *filename, unsigned line,
426 const char *section, unsigned section_line, const char *lvalue,
427 int ltype, const char *rvalue, void *data, void *userdata);
431 const char* llmnr_support_to_string(LLMNRSupport i) _const_;
432 LLMNRSupport llmnr_support_from_string(const char *s) _pure_;
434 int config_parse_llmnr(const char *unit, const char *filename, unsigned line,
435 const char *section, unsigned section_line, const char *lvalue,
436 int ltype, const char *rvalue, void *data, void *userdata);
440 int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
441 int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
442 void address_pool_free(AddressPool *p);
444 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
446 const char *address_family_boolean_to_string(AddressFamilyBoolean b) _const_;
447 AddressFamilyBoolean address_family_boolean_from_string(const char *s) _const_;
449 int config_parse_address_family_boolean(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);
451 /* Opeartional State */
453 const char* link_operstate_to_string(LinkOperationalState s) _const_;
454 LinkOperationalState link_operstate_from_string(const char *s) _pure_;