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;
103 unsigned dhcp_route_metric;
109 LIST_HEAD(Address, static_addresses);
110 LIST_HEAD(Route, static_routes);
112 Hashmap *addresses_by_section;
113 Hashmap *routes_by_section;
115 bool wildcard_domain;
116 char **domains, **dns, **ntp;
120 LIST_FIELDS(Network, networks);
128 unsigned char prefixlen;
133 struct in_addr broadcast;
134 struct ifa_cacheinfo cinfo;
136 union in_addr_union in_addr;
137 union in_addr_union in_addr_peer;
139 LIST_FIELDS(Address, addresses);
147 unsigned char dst_prefixlen;
150 unsigned char protocol; /* RTPROT_* */
152 union in_addr_union in_addr;
153 union in_addr_union dst_addr;
154 union in_addr_union prefsrc_addr;
156 LIST_FIELDS(Route, routes);
165 union in_addr_union in_addr;
167 LIST_FIELDS(AddressPool, address_pools);
175 struct udev_monitor *udev_monitor;
176 sd_event_source *udev_event_source;
177 sd_event_source *sigterm_event_source;
178 sd_event_source *sigint_event_source;
184 LIST_HEAD(Network, networks);
185 LIST_HEAD(AddressPool, address_pools);
187 usec_t network_dirs_ts_usec;
190 extern const char* const network_dirs[];
194 int manager_new(Manager **ret);
195 void manager_free(Manager *m);
197 int manager_load_config(Manager *m);
198 bool manager_should_reload(Manager *m);
200 int manager_rtnl_enumerate_links(Manager *m);
202 int manager_rtnl_listen(Manager *m);
203 int manager_udev_listen(Manager *m);
204 int manager_bus_listen(Manager *m);
206 int manager_save(Manager *m);
208 int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
210 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
211 #define _cleanup_manager_free_ _cleanup_(manager_freep)
215 int network_load(Manager *manager);
217 void network_free(Network *network);
219 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
220 #define _cleanup_network_free_ _cleanup_(network_freep)
222 int network_get(Manager *manager, struct udev_device *device,
223 const char *ifname, const struct ether_addr *mac,
225 int network_apply(Manager *manager, Network *network, Link *link);
227 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
228 const char *section, unsigned section_line, const char *lvalue,
229 int ltype, const char *rvalue, void *data, void *userdata);
231 int config_parse_domains(const char *unit,
232 const char *filename,
235 unsigned section_line,
242 int config_parse_tunnel(const char *unit,
243 const char *filename,
246 unsigned section_line,
253 int config_parse_tunnel_address(const char *unit,
254 const char *filename,
257 unsigned section_line,
265 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
268 int route_new_static(Network *network, unsigned section, Route **ret);
269 int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
270 void route_free(Route *route);
271 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
272 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
275 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
276 #define _cleanup_route_free_ _cleanup_(route_freep)
278 int config_parse_gateway(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_destination(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 config_parse_route_priority(const char *unit, const char *filename, unsigned line,
287 const char *section, unsigned section_line, const char *lvalue,
288 int ltype, const char *rvalue, void *data, void *userdata);
290 int address_new_static(Network *network, unsigned section, Address **ret);
291 int address_new_dynamic(Address **ret);
292 void address_free(Address *address);
293 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
294 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
295 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
296 bool address_equal(Address *a1, Address *a2);
298 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
299 #define _cleanup_address_free_ _cleanup_(address_freep)
301 int config_parse_address(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_broadcast(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);
309 int config_parse_label(const char *unit, const char *filename, unsigned line,
310 const char *section, unsigned section_line, const char *lvalue,
311 int ltype, const char *rvalue, void *data, void *userdata);
315 const char* dhcp_support_to_string(DHCPSupport i) _const_;
316 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
318 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
319 const char *section, unsigned section_line, const char *lvalue,
320 int ltype, const char *rvalue, void *data, void *userdata);
324 const char* llmnr_support_to_string(LLMNRSupport i) _const_;
325 LLMNRSupport llmnr_support_from_string(const char *s) _pure_;
327 int config_parse_llmnr(const char *unit, const char *filename, unsigned line,
328 const char *section, unsigned section_line, const char *lvalue,
329 int ltype, const char *rvalue, void *data, void *userdata);
333 int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
334 int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
335 void address_pool_free(AddressPool *p);
337 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
339 /* Macros which append INTERFACE= to the message */
341 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
342 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
343 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
344 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
345 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
346 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
348 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
350 #define ADDRESS_FMT_VAL(address) \
351 (address).s_addr & 0xFF, \
352 ((address).s_addr >> 8) & 0xFF, \
353 ((address).s_addr >> 16) & 0xFF, \
354 (address).s_addr >> 24