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"
36 #include "rtnl-util.h"
40 #include "condition-util.h"
41 #include "in-addr-util.h"
43 #define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU
44 #define DHCP_ROUTE_METRIC 1024
45 #define IPV4LL_ROUTE_METRIC 2048
47 typedef struct NetDev NetDev;
48 typedef struct Network Network;
49 typedef struct Link Link;
50 typedef struct Address Address;
51 typedef struct Route Route;
52 typedef struct Manager Manager;
53 typedef struct AddressPool AddressPool;
55 typedef enum DHCPSupport {
61 _DHCP_SUPPORT_INVALID = -1,
64 typedef enum LLMNRSupport {
67 LLMNR_SUPPORT_RESOLVE,
69 _LLMNR_SUPPORT_INVALID = -1,
77 struct ether_addr *match_mac;
82 char *dhcp_vendor_class_identifier;
84 Condition *match_host;
85 Condition *match_virt;
86 Condition *match_kernel;
87 Condition *match_arch;
92 Hashmap *stacked_netdevs;
108 LIST_HEAD(Address, static_addresses);
109 LIST_HEAD(Route, static_routes);
111 Hashmap *addresses_by_section;
112 Hashmap *routes_by_section;
114 bool wildcard_domain;
115 char **domains, **dns, **ntp;
119 LIST_FIELDS(Network, networks);
127 unsigned char prefixlen;
131 struct in_addr broadcast;
132 struct ifa_cacheinfo cinfo;
134 union in_addr_union in_addr;
135 union in_addr_union in_addr_peer;
137 LIST_FIELDS(Address, addresses);
145 unsigned char dst_prefixlen;
148 unsigned char protocol; /* RTPROT_* */
150 union in_addr_union in_addr;
151 union in_addr_union dst_addr;
153 LIST_FIELDS(Route, routes);
162 union in_addr_union in_addr;
164 LIST_FIELDS(AddressPool, address_pools);
172 struct udev_monitor *udev_monitor;
173 sd_event_source *udev_event_source;
174 sd_event_source *sigterm_event_source;
175 sd_event_source *sigint_event_source;
181 LIST_HEAD(Network, networks);
182 LIST_HEAD(AddressPool, address_pools);
184 usec_t network_dirs_ts_usec;
187 extern const char* const network_dirs[];
191 int manager_new(Manager **ret);
192 void manager_free(Manager *m);
194 int manager_load_config(Manager *m);
195 bool manager_should_reload(Manager *m);
197 int manager_rtnl_enumerate_links(Manager *m);
199 int manager_rtnl_listen(Manager *m);
200 int manager_udev_listen(Manager *m);
201 int manager_bus_listen(Manager *m);
203 int manager_save(Manager *m);
205 int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
207 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
208 #define _cleanup_manager_free_ _cleanup_(manager_freep)
212 int network_load(Manager *manager);
214 void network_free(Network *network);
216 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
217 #define _cleanup_network_free_ _cleanup_(network_freep)
219 int network_get(Manager *manager, struct udev_device *device,
220 const char *ifname, const struct ether_addr *mac,
222 int network_apply(Manager *manager, Network *network, Link *link);
224 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
225 const char *section, unsigned section_line, const char *lvalue,
226 int ltype, const char *rvalue, void *data, void *userdata);
228 int config_parse_domains(const char *unit,
229 const char *filename,
232 unsigned section_line,
239 int config_parse_tunnel(const char *unit,
240 const char *filename,
243 unsigned section_line,
250 int config_parse_tunnel_address(const char *unit,
251 const char *filename,
254 unsigned section_line,
262 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
265 int route_new_static(Network *network, unsigned section, Route **ret);
266 int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
267 void route_free(Route *route);
268 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
269 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
272 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
273 #define _cleanup_route_free_ _cleanup_(route_freep)
275 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
276 const char *section, unsigned section_line, const char *lvalue,
277 int ltype, const char *rvalue, void *data, void *userdata);
279 int config_parse_destination(const char *unit, const char *filename, unsigned line,
280 const char *section, unsigned section_line, const char *lvalue,
281 int ltype, const char *rvalue, void *data, void *userdata);
283 int config_parse_route_priority(const char *unit, const char *filename, unsigned line,
284 const char *section, unsigned section_line, const char *lvalue,
285 int ltype, const char *rvalue, void *data, void *userdata);
287 int address_new_static(Network *network, unsigned section, Address **ret);
288 int address_new_dynamic(Address **ret);
289 void address_free(Address *address);
290 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
291 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
292 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
293 bool address_equal(Address *a1, Address *a2);
295 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
296 #define _cleanup_address_free_ _cleanup_(address_freep)
298 int config_parse_address(const char *unit, const char *filename, unsigned line,
299 const char *section, unsigned section_line, const char *lvalue,
300 int ltype, const char *rvalue, void *data, void *userdata);
302 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
303 const char *section, unsigned section_line, const char *lvalue,
304 int ltype, const char *rvalue, void *data, void *userdata);
306 int config_parse_label(const char *unit, const char *filename, unsigned line,
307 const char *section, unsigned section_line, const char *lvalue,
308 int ltype, const char *rvalue, void *data, void *userdata);
312 const char* dhcp_support_to_string(DHCPSupport i) _const_;
313 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
315 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
316 const char *section, unsigned section_line, const char *lvalue,
317 int ltype, const char *rvalue, void *data, void *userdata);
321 const char* llmnr_support_to_string(LLMNRSupport i) _const_;
322 LLMNRSupport llmnr_support_from_string(const char *s) _pure_;
324 int config_parse_llmnr(const char *unit, const char *filename, unsigned line,
325 const char *section, unsigned section_line, const char *lvalue,
326 int ltype, const char *rvalue, void *data, void *userdata);
330 int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
331 int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
332 void address_pool_free(AddressPool *p);
334 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
336 /* Macros which append INTERFACE= to the message */
338 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
339 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
340 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
341 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
342 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
343 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
345 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
347 #define ADDRESS_FMT_VAL(address) \
348 (address).s_addr & 0xFF, \
349 ((address).s_addr >> 8) & 0xFF, \
350 ((address).s_addr >> 16) & 0xFF, \
351 (address).s_addr >> 24