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 char **domains, **dns, **ntp;
118 LIST_FIELDS(Network, networks);
126 unsigned char prefixlen;
130 struct in_addr broadcast;
131 struct ifa_cacheinfo cinfo;
133 union in_addr_union in_addr;
134 union in_addr_union in_addr_peer;
136 LIST_FIELDS(Address, addresses);
144 unsigned char dst_prefixlen;
147 unsigned char protocol; /* RTPROT_* */
149 union in_addr_union in_addr;
150 union in_addr_union dst_addr;
152 LIST_FIELDS(Route, routes);
161 union in_addr_union in_addr;
163 LIST_FIELDS(AddressPool, address_pools);
171 struct udev_monitor *udev_monitor;
172 sd_event_source *udev_event_source;
173 sd_event_source *sigterm_event_source;
174 sd_event_source *sigint_event_source;
180 LIST_HEAD(Network, networks);
181 LIST_HEAD(AddressPool, address_pools);
183 usec_t network_dirs_ts_usec;
186 extern const char* const network_dirs[];
190 int manager_new(Manager **ret);
191 void manager_free(Manager *m);
193 int manager_load_config(Manager *m);
194 bool manager_should_reload(Manager *m);
196 int manager_rtnl_enumerate_links(Manager *m);
198 int manager_rtnl_listen(Manager *m);
199 int manager_udev_listen(Manager *m);
200 int manager_bus_listen(Manager *m);
202 int manager_save(Manager *m);
204 int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
206 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
207 #define _cleanup_manager_free_ _cleanup_(manager_freep)
211 int network_load(Manager *manager);
213 void network_free(Network *network);
215 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
216 #define _cleanup_network_free_ _cleanup_(network_freep)
218 int network_get(Manager *manager, struct udev_device *device,
219 const char *ifname, const struct ether_addr *mac,
221 int network_apply(Manager *manager, Network *network, Link *link);
223 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
224 const char *section, unsigned section_line, const char *lvalue,
225 int ltype, const char *rvalue, void *data, void *userdata);
227 int config_parse_domains(const char *unit,
228 const char *filename,
231 unsigned section_line,
238 int config_parse_tunnel(const char *unit,
239 const char *filename,
242 unsigned section_line,
249 int config_parse_tunnel_address(const char *unit,
250 const char *filename,
253 unsigned section_line,
261 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
264 int route_new_static(Network *network, unsigned section, Route **ret);
265 int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
266 void route_free(Route *route);
267 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
268 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
271 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
272 #define _cleanup_route_free_ _cleanup_(route_freep)
274 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
275 const char *section, unsigned section_line, const char *lvalue,
276 int ltype, const char *rvalue, void *data, void *userdata);
278 int config_parse_destination(const char *unit, const char *filename, unsigned line,
279 const char *section, unsigned section_line, const char *lvalue,
280 int ltype, const char *rvalue, void *data, void *userdata);
282 int config_parse_route_priority(const char *unit, const char *filename, unsigned line,
283 const char *section, unsigned section_line, const char *lvalue,
284 int ltype, const char *rvalue, void *data, void *userdata);
286 int address_new_static(Network *network, unsigned section, Address **ret);
287 int address_new_dynamic(Address **ret);
288 void address_free(Address *address);
289 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
290 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
291 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
292 bool address_equal(Address *a1, Address *a2);
294 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
295 #define _cleanup_address_free_ _cleanup_(address_freep)
297 int config_parse_address(const char *unit, const char *filename, unsigned line,
298 const char *section, unsigned section_line, const char *lvalue,
299 int ltype, const char *rvalue, void *data, void *userdata);
301 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
302 const char *section, unsigned section_line, const char *lvalue,
303 int ltype, const char *rvalue, void *data, void *userdata);
305 int config_parse_label(const char *unit, const char *filename, unsigned line,
306 const char *section, unsigned section_line, const char *lvalue,
307 int ltype, const char *rvalue, void *data, void *userdata);
311 const char* dhcp_support_to_string(DHCPSupport i) _const_;
312 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
314 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
315 const char *section, unsigned section_line, const char *lvalue,
316 int ltype, const char *rvalue, void *data, void *userdata);
320 const char* llmnr_support_to_string(LLMNRSupport i) _const_;
321 LLMNRSupport llmnr_support_from_string(const char *s) _pure_;
323 int config_parse_llmnr(const char *unit, const char *filename, unsigned line,
324 const char *section, unsigned section_line, const char *lvalue,
325 int ltype, const char *rvalue, void *data, void *userdata);
329 int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
330 int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
331 void address_pool_free(AddressPool *p);
333 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
335 /* Macros which append INTERFACE= to the message */
337 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
338 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
339 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
340 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
341 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
342 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
344 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
346 #define ADDRESS_FMT_VAL(address) \
347 (address).s_addr & 0xFF, \
348 ((address).s_addr >> 8) & 0xFF, \
349 ((address).s_addr >> 16) & 0xFF, \
350 (address).s_addr >> 24