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;
182 LIST_HEAD(Network, networks);
183 LIST_HEAD(AddressPool, address_pools);
185 usec_t network_dirs_ts_usec;
188 extern const char* const network_dirs[];
192 int manager_new(Manager **ret);
193 void manager_free(Manager *m);
195 int manager_load_config(Manager *m);
196 bool manager_should_reload(Manager *m);
198 int manager_rtnl_enumerate_links(Manager *m);
200 int manager_rtnl_listen(Manager *m);
201 int manager_udev_listen(Manager *m);
202 int manager_bus_listen(Manager *m);
204 int manager_save(Manager *m);
206 int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
208 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
209 #define _cleanup_manager_free_ _cleanup_(manager_freep)
213 int network_load(Manager *manager);
215 void network_free(Network *network);
217 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
218 #define _cleanup_network_free_ _cleanup_(network_freep)
220 int network_get(Manager *manager, struct udev_device *device,
221 const char *ifname, const struct ether_addr *mac,
223 int network_apply(Manager *manager, Network *network, Link *link);
225 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
226 const char *section, unsigned section_line, const char *lvalue,
227 int ltype, const char *rvalue, void *data, void *userdata);
229 int config_parse_domains(const char *unit,
230 const char *filename,
233 unsigned section_line,
240 int config_parse_tunnel(const char *unit,
241 const char *filename,
244 unsigned section_line,
251 int config_parse_tunnel_address(const char *unit,
252 const char *filename,
255 unsigned section_line,
263 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
266 int route_new_static(Network *network, unsigned section, Route **ret);
267 int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
268 void route_free(Route *route);
269 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
270 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
273 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
274 #define _cleanup_route_free_ _cleanup_(route_freep)
276 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
277 const char *section, unsigned section_line, const char *lvalue,
278 int ltype, const char *rvalue, void *data, void *userdata);
280 int config_parse_destination(const char *unit, const char *filename, unsigned line,
281 const char *section, unsigned section_line, const char *lvalue,
282 int ltype, const char *rvalue, void *data, void *userdata);
284 int config_parse_route_priority(const char *unit, const char *filename, unsigned line,
285 const char *section, unsigned section_line, const char *lvalue,
286 int ltype, const char *rvalue, void *data, void *userdata);
288 int address_new_static(Network *network, unsigned section, Address **ret);
289 int address_new_dynamic(Address **ret);
290 void address_free(Address *address);
291 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
292 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
293 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
294 bool address_equal(Address *a1, Address *a2);
296 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
297 #define _cleanup_address_free_ _cleanup_(address_freep)
299 int config_parse_address(const char *unit, const char *filename, unsigned line,
300 const char *section, unsigned section_line, const char *lvalue,
301 int ltype, const char *rvalue, void *data, void *userdata);
303 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
304 const char *section, unsigned section_line, const char *lvalue,
305 int ltype, const char *rvalue, void *data, void *userdata);
307 int config_parse_label(const char *unit, const char *filename, unsigned line,
308 const char *section, unsigned section_line, const char *lvalue,
309 int ltype, const char *rvalue, void *data, void *userdata);
313 const char* dhcp_support_to_string(DHCPSupport i) _const_;
314 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
316 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
317 const char *section, unsigned section_line, const char *lvalue,
318 int ltype, const char *rvalue, void *data, void *userdata);
322 const char* llmnr_support_to_string(LLMNRSupport i) _const_;
323 LLMNRSupport llmnr_support_from_string(const char *s) _pure_;
325 int config_parse_llmnr(const char *unit, const char *filename, unsigned line,
326 const char *section, unsigned section_line, const char *lvalue,
327 int ltype, const char *rvalue, void *data, void *userdata);
331 int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
332 int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
333 void address_pool_free(AddressPool *p);
335 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
337 /* Macros which append INTERFACE= to the message */
339 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
340 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
341 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
342 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
343 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
344 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
346 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
348 #define ADDRESS_FMT_VAL(address) \
349 (address).s_addr & 0xFF, \
350 ((address).s_addr >> 8) & 0xFF, \
351 ((address).s_addr >> 16) & 0xFF, \
352 (address).s_addr >> 24