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;
178 struct udev_device *udev_device;
181 uint8_t kernel_operstate;
186 LinkOperationalState operstate;
188 unsigned addr_messages;
189 unsigned route_messages;
192 LIST_HEAD(Address, addresses);
194 sd_dhcp_client *dhcp_client;
195 sd_dhcp_lease *dhcp_lease;
197 uint16_t original_mtu;
200 LIST_HEAD(Address, pool_addresses);
202 sd_dhcp_server *dhcp_server;
204 sd_icmp6_nd *icmp6_router_discovery;
205 sd_dhcp6_client *dhcp6_client;
214 union in_addr_union in_addr;
216 LIST_FIELDS(AddressPool, address_pools);
224 struct udev_monitor *udev_monitor;
225 sd_event_source *udev_event_source;
226 sd_event_source *sigterm_event_source;
227 sd_event_source *sigint_event_source;
233 LIST_HEAD(Network, networks);
234 LIST_HEAD(AddressPool, address_pools);
236 usec_t network_dirs_ts_usec;
239 extern const char* const network_dirs[];
243 int manager_new(Manager **ret);
244 void manager_free(Manager *m);
246 int manager_load_config(Manager *m);
247 bool manager_should_reload(Manager *m);
249 int manager_rtnl_enumerate_links(Manager *m);
251 int manager_rtnl_listen(Manager *m);
252 int manager_udev_listen(Manager *m);
253 int manager_bus_listen(Manager *m);
255 int manager_save(Manager *m);
257 int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
259 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
260 #define _cleanup_manager_free_ _cleanup_(manager_freep)
264 int network_load(Manager *manager);
266 void network_free(Network *network);
268 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
269 #define _cleanup_network_free_ _cleanup_(network_freep)
271 int network_get(Manager *manager, struct udev_device *device,
272 const char *ifname, const struct ether_addr *mac,
274 int network_apply(Manager *manager, Network *network, Link *link);
276 int config_parse_netdev(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_tunnel(const char *unit,
281 const char *filename,
284 unsigned section_line,
291 int config_parse_tunnel_address(const char *unit,
292 const char *filename,
295 unsigned section_line,
303 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
306 int route_new_static(Network *network, unsigned section, Route **ret);
307 int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
308 void route_free(Route *route);
309 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
310 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
313 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
314 #define _cleanup_route_free_ _cleanup_(route_freep)
316 int config_parse_gateway(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);
320 int config_parse_destination(const char *unit, const char *filename, unsigned line,
321 const char *section, unsigned section_line, const char *lvalue,
322 int ltype, const char *rvalue, void *data, void *userdata);
324 int config_parse_route_priority(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);
328 int address_new_static(Network *network, unsigned section, Address **ret);
329 int address_new_dynamic(Address **ret);
330 void address_free(Address *address);
331 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
332 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
333 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
334 bool address_equal(Address *a1, Address *a2);
336 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
337 #define _cleanup_address_free_ _cleanup_(address_freep)
339 int config_parse_address(const char *unit, const char *filename, unsigned line,
340 const char *section, unsigned section_line, const char *lvalue,
341 int ltype, const char *rvalue, void *data, void *userdata);
343 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
344 const char *section, unsigned section_line, const char *lvalue,
345 int ltype, const char *rvalue, void *data, void *userdata);
347 int config_parse_label(const char *unit, const char *filename, unsigned line,
348 const char *section, unsigned section_line, const char *lvalue,
349 int ltype, const char *rvalue, void *data, void *userdata);
353 Link *link_unref(Link *link);
354 Link *link_ref(Link *link);
355 int link_get(Manager *m, int ifindex, Link **ret);
356 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
357 void link_drop(Link *link);
359 int link_update(Link *link, sd_rtnl_message *message);
360 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
362 int link_initialized(Link *link, struct udev_device *device);
364 int link_save(Link *link);
366 bool link_has_carrier(unsigned flags, uint8_t operstate);
368 const char* link_state_to_string(LinkState s) _const_;
369 LinkState link_state_from_string(const char *s) _pure_;
371 const char* link_operstate_to_string(LinkOperationalState s) _const_;
372 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
374 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
375 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
379 const char* dhcp_support_to_string(DHCPSupport i) _const_;
380 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
382 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
383 const char *section, unsigned section_line, const char *lvalue,
384 int ltype, const char *rvalue, void *data, void *userdata);
388 int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
389 int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
390 void address_pool_free(AddressPool *p);
392 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
394 /* Macros which append INTERFACE= to the message */
396 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
397 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
398 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
399 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
400 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
401 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
403 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
405 #define ADDRESS_FMT_VAL(address) \
406 (address).s_addr & 0xFF, \
407 ((address).s_addr >> 8) & 0xFF, \
408 ((address).s_addr >> 16) & 0xFF, \
409 (address).s_addr >> 24