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;
90 struct ether_addr *mac_addr;
93 LIST_FIELDS(FdbEntry, static_fdb_entries);
102 struct ether_addr *match_mac;
108 Condition *match_host;
109 Condition *match_virt;
110 Condition *match_kernel;
111 Condition *match_arch;
116 Hashmap *stacked_netdevs;
117 AddressFamilyBoolean dhcp;
118 char *dhcp_vendor_class_identifier;
128 unsigned dhcp_route_metric;
129 AddressFamilyBoolean link_local;
131 union in_addr_union ipv6_token;
137 AddressFamilyBoolean ip_forward;
140 struct ether_addr *mac;
145 LIST_HEAD(Address, static_addresses);
146 LIST_HEAD(Route, static_routes);
147 LIST_HEAD(FdbEntry, static_fdb_entries);
149 Hashmap *addresses_by_section;
150 Hashmap *routes_by_section;
151 Hashmap *fdb_entries_by_section;
153 bool wildcard_domain;
154 char **domains, **dns, **ntp;
158 LIST_FIELDS(Network, networks);
166 unsigned char prefixlen;
171 struct in_addr broadcast;
172 struct ifa_cacheinfo cinfo;
174 union in_addr_union in_addr;
175 union in_addr_union in_addr_peer;
177 bool ip_masquerade_done;
179 LIST_FIELDS(Address, addresses);
187 unsigned char dst_prefixlen;
188 unsigned char src_prefixlen;
191 unsigned char protocol; /* RTPROT_* */
193 union in_addr_union in_addr;
194 union in_addr_union dst_addr;
195 union in_addr_union src_addr;
196 union in_addr_union prefsrc_addr;
198 LIST_FIELDS(Route, routes);
207 union in_addr_union in_addr;
209 LIST_FIELDS(AddressPool, address_pools);
215 sd_event_source *bus_retry_event_source;
217 sd_bus_slot *prepare_for_sleep_slot;
219 struct udev_monitor *udev_monitor;
220 sd_event_source *udev_event_source;
225 LinkOperationalState operational_state;
229 Hashmap *networks_by_name;
230 LIST_HEAD(Network, networks);
231 LIST_HEAD(AddressPool, address_pools);
233 usec_t network_dirs_ts_usec;
236 extern const char* const network_dirs[];
240 extern const sd_bus_vtable manager_vtable[];
242 int manager_new(Manager **ret);
243 void manager_free(Manager *m);
245 int manager_connect_bus(Manager *m);
246 int manager_run(Manager *m);
248 int manager_load_config(Manager *m);
249 bool manager_should_reload(Manager *m);
251 int manager_rtnl_enumerate_links(Manager *m);
252 int manager_rtnl_enumerate_addresses(Manager *m);
254 int manager_send_changed(Manager *m, const char *property, ...) _sentinel_;
255 int manager_save(Manager *m);
257 int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
259 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
260 #define _cleanup_manager_free_ _cleanup_(manager_freep)
264 int network_load(Manager *manager);
266 void network_free(Network *network);
268 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
269 #define _cleanup_network_free_ _cleanup_(network_freep)
271 int network_get_by_name(Manager *manager, const char *name, Network **ret);
272 int network_get(Manager *manager, struct udev_device *device,
273 const char *ifname, const struct ether_addr *mac,
275 int network_apply(Manager *manager, Network *network, Link *link);
277 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
278 const char *section, unsigned section_line, const char *lvalue,
279 int ltype, const char *rvalue, void *data, void *userdata);
281 int config_parse_domains(const char *unit,
282 const char *filename,
285 unsigned section_line,
292 int config_parse_tunnel(const char *unit,
293 const char *filename,
296 unsigned section_line,
303 int config_parse_tunnel_address(const char *unit,
304 const char *filename,
307 unsigned section_line,
314 int config_parse_vxlan_group_address(const char *unit,
315 const char *filename,
318 unsigned section_line,
325 extern const sd_bus_vtable network_vtable[];
327 int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
328 int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
331 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
334 int route_new_static(Network *network, unsigned section, Route **ret);
335 int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
336 void route_free(Route *route);
337 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
338 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
341 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
342 #define _cleanup_route_free_ _cleanup_(route_freep)
344 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
345 const char *section, unsigned section_line, const char *lvalue,
346 int ltype, const char *rvalue, void *data, void *userdata);
348 int config_parse_destination(const char *unit, const char *filename, unsigned line,
349 const char *section, unsigned section_line, const char *lvalue,
350 int ltype, const char *rvalue, void *data, void *userdata);
352 int config_parse_route_priority(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_route_scope(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 address_new_static(Network *network, unsigned section, Address **ret);
361 int address_new_dynamic(Address **ret);
362 void address_free(Address *address);
363 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
364 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
365 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
366 int address_establish(Address *address, Link *link);
367 int address_release(Address *address, Link *link);
368 bool address_equal(Address *a1, Address *a2);
370 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
371 #define _cleanup_address_free_ _cleanup_(address_freep)
373 int config_parse_address(const char *unit, const char *filename, unsigned line,
374 const char *section, unsigned section_line, const char *lvalue,
375 int ltype, const char *rvalue, void *data, void *userdata);
377 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
378 const char *section, unsigned section_line, const char *lvalue,
379 int ltype, const char *rvalue, void *data, void *userdata);
381 int config_parse_label(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 /* Forwarding database table. */
386 int fdb_entry_configure(sd_rtnl *const rtnl, FdbEntry *const fdb_entry, const int ifindex);
387 void fdb_entry_free(FdbEntry *fdb_entry);
388 int fdb_entry_new_static(Network *const network, const unsigned section, FdbEntry **ret);
390 DEFINE_TRIVIAL_CLEANUP_FUNC(FdbEntry*, fdb_entry_free);
391 #define _cleanup_fdbentry_free_ _cleanup_(fdb_entry_freep)
393 int config_parse_fdb_hwaddr(const char *unit, const char *filename, unsigned line,
394 const char *section, unsigned section_line, const char *lvalue,
395 int ltype, const char *rvalue, void *data, void *userdata);
397 int config_parse_fdb_vlan_id(const char *unit, const char *filename, unsigned line,
398 const char *section, unsigned section_line, const char *lvalue,
399 int ltype, const char *rvalue, void *data, void *userdata);
403 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
404 const char *section, unsigned section_line, const char *lvalue,
405 int ltype, const char *rvalue, void *data, void *userdata);
407 /* IPv4LL support (legacy) */
409 int config_parse_ipv4ll(const char *unit, const char *filename, unsigned line,
410 const char *section, unsigned section_line, const char *lvalue,
411 int ltype, const char *rvalue, void *data, void *userdata);
414 int config_parse_token(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);
420 const char* llmnr_support_to_string(LLMNRSupport i) _const_;
421 LLMNRSupport llmnr_support_from_string(const char *s) _pure_;
423 int config_parse_llmnr(const char *unit, const char *filename, unsigned line,
424 const char *section, unsigned section_line, const char *lvalue,
425 int ltype, const char *rvalue, void *data, void *userdata);
429 int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
430 int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
431 void address_pool_free(AddressPool *p);
433 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
435 const char *address_family_boolean_to_string(AddressFamilyBoolean b) _const_;
436 AddressFamilyBoolean address_family_boolean_from_string(const char *s) _const_;
438 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);
440 /* Opeartional State */
442 const char* link_operstate_to_string(LinkOperationalState s) _const_;
443 LinkOperationalState link_operstate_from_string(const char *s) _pure_;