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,
69 struct ether_addr *match_mac;
74 char *dhcp_vendor_class_identifier;
76 Condition *match_host;
77 Condition *match_virt;
78 Condition *match_kernel;
79 Condition *match_arch;
84 Hashmap *stacked_netdevs;
100 LIST_HEAD(Address, static_addresses);
101 LIST_HEAD(Route, static_routes);
103 Hashmap *addresses_by_section;
104 Hashmap *routes_by_section;
108 LIST_FIELDS(Network, networks);
116 unsigned char prefixlen;
120 struct in_addr broadcast;
121 struct ifa_cacheinfo cinfo;
123 union in_addr_union in_addr;
124 union in_addr_union in_addr_peer;
126 LIST_FIELDS(Address, addresses);
134 unsigned char dst_prefixlen;
137 unsigned char protocol; /* RTPROT_* */
139 union in_addr_union in_addr;
140 union in_addr_union dst_addr;
142 LIST_FIELDS(Route, routes);
145 typedef enum LinkState {
146 LINK_STATE_INITIALIZING,
147 LINK_STATE_ENSLAVING,
148 LINK_STATE_SETTING_ADDRESSES,
149 LINK_STATE_SETTING_ROUTES,
150 LINK_STATE_CONFIGURED,
151 LINK_STATE_UNMANAGED,
155 _LINK_STATE_INVALID = -1
158 typedef enum LinkOperationalState {
159 LINK_OPERSTATE_UNKNOWN,
160 LINK_OPERSTATE_DORMANT,
161 LINK_OPERSTATE_CARRIER,
162 LINK_OPERSTATE_DEGRADED,
163 LINK_OPERSTATE_ROUTABLE,
165 _LINK_OPERSTATE_INVALID = -1
166 } LinkOperationalState;
176 struct ether_addr mac;
177 struct udev_device *udev_device;
180 uint8_t kernel_operstate;
185 LinkOperationalState operstate;
187 unsigned addr_messages;
188 unsigned route_messages;
191 LIST_HEAD(Address, addresses);
193 sd_dhcp_client *dhcp_client;
194 sd_dhcp_lease *dhcp_lease;
196 uint16_t original_mtu;
199 LIST_HEAD(Address, pool_addresses);
201 sd_dhcp_server *dhcp_server;
203 sd_icmp6_nd *icmp6_router_discovery;
204 sd_dhcp6_client *dhcp6_client;
213 union in_addr_union in_addr;
215 LIST_FIELDS(AddressPool, address_pools);
223 struct udev_monitor *udev_monitor;
224 sd_event_source *udev_event_source;
225 sd_event_source *sigterm_event_source;
226 sd_event_source *sigint_event_source;
232 LIST_HEAD(Network, networks);
233 LIST_HEAD(AddressPool, address_pools);
235 usec_t network_dirs_ts_usec;
238 extern const char* const network_dirs[];
242 int manager_new(Manager **ret);
243 void manager_free(Manager *m);
245 int manager_load_config(Manager *m);
246 bool manager_should_reload(Manager *m);
248 int manager_rtnl_enumerate_links(Manager *m);
250 int manager_rtnl_listen(Manager *m);
251 int manager_udev_listen(Manager *m);
252 int manager_bus_listen(Manager *m);
254 int manager_save(Manager *m);
256 int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
258 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
259 #define _cleanup_manager_free_ _cleanup_(manager_freep)
263 int network_load(Manager *manager);
265 void network_free(Network *network);
267 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
268 #define _cleanup_network_free_ _cleanup_(network_freep)
270 int network_get(Manager *manager, struct udev_device *device,
271 const char *ifname, const struct ether_addr *mac,
273 int network_apply(Manager *manager, Network *network, Link *link);
275 int config_parse_netdev(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_tunnel(const char *unit,
280 const char *filename,
283 unsigned section_line,
290 int config_parse_tunnel_address(const char *unit,
291 const char *filename,
294 unsigned section_line,
302 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
305 int route_new_static(Network *network, unsigned section, Route **ret);
306 int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
307 void route_free(Route *route);
308 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
309 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
312 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
313 #define _cleanup_route_free_ _cleanup_(route_freep)
315 int config_parse_gateway(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);
319 int config_parse_destination(const char *unit, const char *filename, unsigned line,
320 const char *section, unsigned section_line, const char *lvalue,
321 int ltype, const char *rvalue, void *data, void *userdata);
323 int config_parse_route_priority(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);
327 int address_new_static(Network *network, unsigned section, Address **ret);
328 int address_new_dynamic(Address **ret);
329 void address_free(Address *address);
330 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
331 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
332 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
333 bool address_equal(Address *a1, Address *a2);
335 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
336 #define _cleanup_address_free_ _cleanup_(address_freep)
338 int config_parse_address(const char *unit, const char *filename, unsigned line,
339 const char *section, unsigned section_line, const char *lvalue,
340 int ltype, const char *rvalue, void *data, void *userdata);
342 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
343 const char *section, unsigned section_line, const char *lvalue,
344 int ltype, const char *rvalue, void *data, void *userdata);
346 int config_parse_label(const char *unit, const char *filename, unsigned line,
347 const char *section, unsigned section_line, const char *lvalue,
348 int ltype, const char *rvalue, void *data, void *userdata);
352 Link *link_unref(Link *link);
353 Link *link_ref(Link *link);
354 int link_get(Manager *m, int ifindex, Link **ret);
355 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
356 void link_drop(Link *link);
358 int link_update(Link *link, sd_rtnl_message *message);
359 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
361 int link_initialized(Link *link, struct udev_device *device);
363 int link_save(Link *link);
365 bool link_has_carrier(unsigned flags, uint8_t operstate);
367 const char* link_state_to_string(LinkState s) _const_;
368 LinkState link_state_from_string(const char *s) _pure_;
370 const char* link_operstate_to_string(LinkOperationalState s) _const_;
371 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
373 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
374 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
378 const char* dhcp_support_to_string(DHCPSupport i) _const_;
379 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
381 int config_parse_dhcp(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);
387 int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
388 int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
389 void address_pool_free(AddressPool *p);
391 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
393 /* Macros which append INTERFACE= to the message */
395 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
396 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
397 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
398 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
399 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
400 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
402 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
404 #define ADDRESS_FMT_VAL(address) \
405 (address).s_addr & 0xFF, \
406 ((address).s_addr >> 8) & 0xFF, \
407 ((address).s_addr >> 16) & 0xFF, \
408 (address).s_addr >> 24