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;
103 LIST_HEAD(Address, static_addresses);
104 LIST_HEAD(Route, static_routes);
106 Hashmap *addresses_by_section;
107 Hashmap *routes_by_section;
111 LIST_FIELDS(Network, networks);
119 unsigned char prefixlen;
123 struct in_addr broadcast;
124 struct ifa_cacheinfo cinfo;
126 union in_addr_union in_addr;
127 union in_addr_union in_addr_peer;
129 LIST_FIELDS(Address, addresses);
137 unsigned char dst_prefixlen;
140 unsigned char protocol; /* RTPROT_* */
142 union in_addr_union in_addr;
143 union in_addr_union dst_addr;
145 LIST_FIELDS(Route, routes);
148 typedef enum LinkState {
149 LINK_STATE_INITIALIZING,
150 LINK_STATE_ENSLAVING,
151 LINK_STATE_SETTING_ADDRESSES,
152 LINK_STATE_SETTING_ROUTES,
153 LINK_STATE_CONFIGURED,
154 LINK_STATE_UNMANAGED,
158 _LINK_STATE_INVALID = -1
161 typedef enum LinkOperationalState {
162 LINK_OPERSTATE_UNKNOWN,
163 LINK_OPERSTATE_DORMANT,
164 LINK_OPERSTATE_CARRIER,
165 LINK_OPERSTATE_DEGRADED,
166 LINK_OPERSTATE_ROUTABLE,
168 _LINK_OPERSTATE_INVALID = -1
169 } LinkOperationalState;
179 struct ether_addr mac;
180 struct udev_device *udev_device;
183 uint8_t kernel_operstate;
188 LinkOperationalState operstate;
190 unsigned addr_messages;
191 unsigned route_messages;
194 LIST_HEAD(Address, addresses);
196 sd_dhcp_client *dhcp_client;
197 sd_dhcp_lease *dhcp_lease;
199 uint16_t original_mtu;
202 LIST_HEAD(Address, pool_addresses);
204 sd_dhcp_server *dhcp_server;
206 sd_icmp6_nd *icmp6_router_discovery;
207 sd_dhcp6_client *dhcp6_client;
216 union in_addr_union in_addr;
218 LIST_FIELDS(AddressPool, address_pools);
226 struct udev_monitor *udev_monitor;
227 sd_event_source *udev_event_source;
228 sd_event_source *sigterm_event_source;
229 sd_event_source *sigint_event_source;
235 LIST_HEAD(Network, networks);
236 LIST_HEAD(AddressPool, address_pools);
238 usec_t network_dirs_ts_usec;
241 extern const char* const network_dirs[];
245 int manager_new(Manager **ret);
246 void manager_free(Manager *m);
248 int manager_load_config(Manager *m);
249 bool manager_should_reload(Manager *m);
251 int manager_rtnl_enumerate_links(Manager *m);
253 int manager_rtnl_listen(Manager *m);
254 int manager_udev_listen(Manager *m);
255 int manager_bus_listen(Manager *m);
257 int manager_save(Manager *m);
259 int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
261 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
262 #define _cleanup_manager_free_ _cleanup_(manager_freep)
266 int network_load(Manager *manager);
268 void network_free(Network *network);
270 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
271 #define _cleanup_network_free_ _cleanup_(network_freep)
273 int network_get(Manager *manager, struct udev_device *device,
274 const char *ifname, const struct ether_addr *mac,
276 int network_apply(Manager *manager, Network *network, Link *link);
278 int config_parse_netdev(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_tunnel(const char *unit,
283 const char *filename,
286 unsigned section_line,
293 int config_parse_tunnel_address(const char *unit,
294 const char *filename,
297 unsigned section_line,
305 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
308 int route_new_static(Network *network, unsigned section, Route **ret);
309 int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
310 void route_free(Route *route);
311 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
312 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
315 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
316 #define _cleanup_route_free_ _cleanup_(route_freep)
318 int config_parse_gateway(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);
322 int config_parse_destination(const char *unit, const char *filename, unsigned line,
323 const char *section, unsigned section_line, const char *lvalue,
324 int ltype, const char *rvalue, void *data, void *userdata);
326 int config_parse_route_priority(const char *unit, const char *filename, unsigned line,
327 const char *section, unsigned section_line, const char *lvalue,
328 int ltype, const char *rvalue, void *data, void *userdata);
330 int address_new_static(Network *network, unsigned section, Address **ret);
331 int address_new_dynamic(Address **ret);
332 void address_free(Address *address);
333 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
334 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
335 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
336 bool address_equal(Address *a1, Address *a2);
338 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
339 #define _cleanup_address_free_ _cleanup_(address_freep)
341 int config_parse_address(const char *unit, const char *filename, unsigned line,
342 const char *section, unsigned section_line, const char *lvalue,
343 int ltype, const char *rvalue, void *data, void *userdata);
345 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
346 const char *section, unsigned section_line, const char *lvalue,
347 int ltype, const char *rvalue, void *data, void *userdata);
349 int config_parse_label(const char *unit, const char *filename, unsigned line,
350 const char *section, unsigned section_line, const char *lvalue,
351 int ltype, const char *rvalue, void *data, void *userdata);
355 Link *link_unref(Link *link);
356 Link *link_ref(Link *link);
357 int link_get(Manager *m, int ifindex, Link **ret);
358 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
359 void link_drop(Link *link);
361 int link_update(Link *link, sd_rtnl_message *message);
362 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
364 int link_initialized(Link *link, struct udev_device *device);
366 int link_save(Link *link);
368 bool link_has_carrier(unsigned flags, uint8_t operstate);
370 const char* link_state_to_string(LinkState s) _const_;
371 LinkState link_state_from_string(const char *s) _pure_;
373 const char* link_operstate_to_string(LinkOperationalState s) _const_;
374 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
376 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
377 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
381 const char* dhcp_support_to_string(DHCPSupport i) _const_;
382 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
384 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
385 const char *section, unsigned section_line, const char *lvalue,
386 int ltype, const char *rvalue, void *data, void *userdata);
390 int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
391 int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
392 void address_pool_free(AddressPool *p);
394 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
396 /* Macros which append INTERFACE= to the message */
398 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
399 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
400 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
401 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
402 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
403 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
405 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
407 #define ADDRESS_FMT_VAL(address) \
408 (address).s_addr & 0xFF, \
409 ((address).s_addr >> 8) & 0xFF, \
410 ((address).s_addr >> 16) & 0xFF, \
411 (address).s_addr >> 24