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;
108 LIST_HEAD(Address, static_addresses);
109 LIST_HEAD(Route, static_routes);
111 Hashmap *addresses_by_section;
112 Hashmap *routes_by_section;
118 LIST_FIELDS(Network, networks);
126 unsigned char prefixlen;
130 struct in_addr broadcast;
131 struct ifa_cacheinfo cinfo;
133 union in_addr_union in_addr;
134 union in_addr_union in_addr_peer;
136 LIST_FIELDS(Address, addresses);
144 unsigned char dst_prefixlen;
147 unsigned char protocol; /* RTPROT_* */
149 union in_addr_union in_addr;
150 union in_addr_union dst_addr;
152 LIST_FIELDS(Route, routes);
155 typedef enum LinkState {
156 LINK_STATE_INITIALIZING,
157 LINK_STATE_ENSLAVING,
158 LINK_STATE_SETTING_ADDRESSES,
159 LINK_STATE_SETTING_ROUTES,
160 LINK_STATE_CONFIGURED,
161 LINK_STATE_UNMANAGED,
165 _LINK_STATE_INVALID = -1
168 typedef enum LinkOperationalState {
169 LINK_OPERSTATE_UNKNOWN,
170 LINK_OPERSTATE_DORMANT,
171 LINK_OPERSTATE_CARRIER,
172 LINK_OPERSTATE_DEGRADED,
173 LINK_OPERSTATE_ROUTABLE,
175 _LINK_OPERSTATE_INVALID = -1
176 } LinkOperationalState;
186 struct ether_addr mac;
188 struct udev_device *udev_device;
191 uint8_t kernel_operstate;
196 LinkOperationalState operstate;
198 unsigned addr_messages;
199 unsigned route_messages;
202 LIST_HEAD(Address, addresses);
204 sd_dhcp_client *dhcp_client;
205 sd_dhcp_lease *dhcp_lease;
207 uint16_t original_mtu;
210 LIST_HEAD(Address, pool_addresses);
212 sd_dhcp_server *dhcp_server;
214 sd_icmp6_nd *icmp6_router_discovery;
215 sd_dhcp6_client *dhcp6_client;
224 union in_addr_union in_addr;
226 LIST_FIELDS(AddressPool, address_pools);
234 struct udev_monitor *udev_monitor;
235 sd_event_source *udev_event_source;
236 sd_event_source *sigterm_event_source;
237 sd_event_source *sigint_event_source;
243 LIST_HEAD(Network, networks);
244 LIST_HEAD(AddressPool, address_pools);
246 usec_t network_dirs_ts_usec;
249 extern const char* const network_dirs[];
253 int manager_new(Manager **ret);
254 void manager_free(Manager *m);
256 int manager_load_config(Manager *m);
257 bool manager_should_reload(Manager *m);
259 int manager_rtnl_enumerate_links(Manager *m);
261 int manager_rtnl_listen(Manager *m);
262 int manager_udev_listen(Manager *m);
263 int manager_bus_listen(Manager *m);
265 int manager_save(Manager *m);
267 int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
269 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
270 #define _cleanup_manager_free_ _cleanup_(manager_freep)
274 int network_load(Manager *manager);
276 void network_free(Network *network);
278 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
279 #define _cleanup_network_free_ _cleanup_(network_freep)
281 int network_get(Manager *manager, struct udev_device *device,
282 const char *ifname, const struct ether_addr *mac,
284 int network_apply(Manager *manager, Network *network, Link *link);
286 int config_parse_netdev(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 config_parse_tunnel(const char *unit,
291 const char *filename,
294 unsigned section_line,
301 int config_parse_tunnel_address(const char *unit,
302 const char *filename,
305 unsigned section_line,
313 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
316 int route_new_static(Network *network, unsigned section, Route **ret);
317 int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
318 void route_free(Route *route);
319 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
320 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
323 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
324 #define _cleanup_route_free_ _cleanup_(route_freep)
326 int config_parse_gateway(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 config_parse_destination(const char *unit, const char *filename, unsigned line,
331 const char *section, unsigned section_line, const char *lvalue,
332 int ltype, const char *rvalue, void *data, void *userdata);
334 int config_parse_route_priority(const char *unit, const char *filename, unsigned line,
335 const char *section, unsigned section_line, const char *lvalue,
336 int ltype, const char *rvalue, void *data, void *userdata);
338 int address_new_static(Network *network, unsigned section, Address **ret);
339 int address_new_dynamic(Address **ret);
340 void address_free(Address *address);
341 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
342 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
343 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
344 bool address_equal(Address *a1, Address *a2);
346 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
347 #define _cleanup_address_free_ _cleanup_(address_freep)
349 int config_parse_address(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);
353 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
354 const char *section, unsigned section_line, const char *lvalue,
355 int ltype, const char *rvalue, void *data, void *userdata);
357 int config_parse_label(const char *unit, const char *filename, unsigned line,
358 const char *section, unsigned section_line, const char *lvalue,
359 int ltype, const char *rvalue, void *data, void *userdata);
363 Link *link_unref(Link *link);
364 Link *link_ref(Link *link);
365 int link_get(Manager *m, int ifindex, Link **ret);
366 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
367 void link_drop(Link *link);
369 int link_update(Link *link, sd_rtnl_message *message);
370 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
372 int link_initialized(Link *link, struct udev_device *device);
374 int link_save(Link *link);
376 bool link_has_carrier(unsigned flags, uint8_t operstate);
378 const char* link_state_to_string(LinkState s) _const_;
379 LinkState link_state_from_string(const char *s) _pure_;
381 const char* link_operstate_to_string(LinkOperationalState s) _const_;
382 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
384 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
385 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
389 const char* dhcp_support_to_string(DHCPSupport i) _const_;
390 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
392 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
393 const char *section, unsigned section_line, const char *lvalue,
394 int ltype, const char *rvalue, void *data, void *userdata);
398 const char* llmnr_support_to_string(LLMNRSupport i) _const_;
399 LLMNRSupport llmnr_support_from_string(const char *s) _pure_;
401 int config_parse_llmnr(const char *unit, const char *filename, unsigned line,
402 const char *section, unsigned section_line, const char *lvalue,
403 int ltype, const char *rvalue, void *data, void *userdata);
407 int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
408 int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
409 void address_pool_free(AddressPool *p);
411 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
413 /* Macros which append INTERFACE= to the message */
415 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
416 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
417 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
418 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
419 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
420 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
422 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
424 #define ADDRESS_FMT_VAL(address) \
425 (address).s_addr & 0xFF, \
426 ((address).s_addr >> 8) & 0xFF, \
427 ((address).s_addr >> 16) & 0xFF, \
428 (address).s_addr >> 24