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;
102 LIST_HEAD(Address, static_addresses);
103 LIST_HEAD(Route, static_routes);
105 Hashmap *addresses_by_section;
106 Hashmap *routes_by_section;
110 LIST_FIELDS(Network, networks);
118 unsigned char prefixlen;
122 struct in_addr broadcast;
123 struct ifa_cacheinfo cinfo;
125 union in_addr_union in_addr;
126 union in_addr_union in_addr_peer;
128 LIST_FIELDS(Address, addresses);
136 unsigned char dst_prefixlen;
139 unsigned char protocol; /* RTPROT_* */
141 union in_addr_union in_addr;
142 union in_addr_union dst_addr;
144 LIST_FIELDS(Route, routes);
147 typedef enum LinkState {
148 LINK_STATE_INITIALIZING,
149 LINK_STATE_ENSLAVING,
150 LINK_STATE_SETTING_ADDRESSES,
151 LINK_STATE_SETTING_ROUTES,
152 LINK_STATE_CONFIGURED,
153 LINK_STATE_UNMANAGED,
157 _LINK_STATE_INVALID = -1
160 typedef enum LinkOperationalState {
161 LINK_OPERSTATE_UNKNOWN,
162 LINK_OPERSTATE_DORMANT,
163 LINK_OPERSTATE_CARRIER,
164 LINK_OPERSTATE_DEGRADED,
165 LINK_OPERSTATE_ROUTABLE,
167 _LINK_OPERSTATE_INVALID = -1
168 } LinkOperationalState;
178 struct ether_addr mac;
179 struct udev_device *udev_device;
182 uint8_t kernel_operstate;
187 LinkOperationalState operstate;
189 unsigned addr_messages;
190 unsigned route_messages;
193 LIST_HEAD(Address, addresses);
195 sd_dhcp_client *dhcp_client;
196 sd_dhcp_lease *dhcp_lease;
198 uint16_t original_mtu;
201 LIST_HEAD(Address, pool_addresses);
203 sd_dhcp_server *dhcp_server;
205 sd_icmp6_nd *icmp6_router_discovery;
206 sd_dhcp6_client *dhcp6_client;
215 union in_addr_union in_addr;
217 LIST_FIELDS(AddressPool, address_pools);
225 struct udev_monitor *udev_monitor;
226 sd_event_source *udev_event_source;
227 sd_event_source *sigterm_event_source;
228 sd_event_source *sigint_event_source;
234 LIST_HEAD(Network, networks);
235 LIST_HEAD(AddressPool, address_pools);
237 usec_t network_dirs_ts_usec;
240 extern const char* const network_dirs[];
244 int manager_new(Manager **ret);
245 void manager_free(Manager *m);
247 int manager_load_config(Manager *m);
248 bool manager_should_reload(Manager *m);
250 int manager_rtnl_enumerate_links(Manager *m);
252 int manager_rtnl_listen(Manager *m);
253 int manager_udev_listen(Manager *m);
254 int manager_bus_listen(Manager *m);
256 int manager_save(Manager *m);
258 int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
260 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
261 #define _cleanup_manager_free_ _cleanup_(manager_freep)
265 int network_load(Manager *manager);
267 void network_free(Network *network);
269 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
270 #define _cleanup_network_free_ _cleanup_(network_freep)
272 int network_get(Manager *manager, struct udev_device *device,
273 const char *ifname, const struct ether_addr *mac,
275 int network_apply(Manager *manager, Network *network, Link *link);
277 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
278 const char *section, unsigned section_line, const char *lvalue,
279 int ltype, const char *rvalue, void *data, void *userdata);
281 int config_parse_tunnel(const char *unit,
282 const char *filename,
285 unsigned section_line,
292 int config_parse_tunnel_address(const char *unit,
293 const char *filename,
296 unsigned section_line,
304 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
307 int route_new_static(Network *network, unsigned section, Route **ret);
308 int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
309 void route_free(Route *route);
310 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
311 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
314 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
315 #define _cleanup_route_free_ _cleanup_(route_freep)
317 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
318 const char *section, unsigned section_line, const char *lvalue,
319 int ltype, const char *rvalue, void *data, void *userdata);
321 int config_parse_destination(const char *unit, const char *filename, unsigned line,
322 const char *section, unsigned section_line, const char *lvalue,
323 int ltype, const char *rvalue, void *data, void *userdata);
325 int config_parse_route_priority(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);
329 int address_new_static(Network *network, unsigned section, Address **ret);
330 int address_new_dynamic(Address **ret);
331 void address_free(Address *address);
332 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
333 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
334 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
335 bool address_equal(Address *a1, Address *a2);
337 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
338 #define _cleanup_address_free_ _cleanup_(address_freep)
340 int config_parse_address(const char *unit, const char *filename, unsigned line,
341 const char *section, unsigned section_line, const char *lvalue,
342 int ltype, const char *rvalue, void *data, void *userdata);
344 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
345 const char *section, unsigned section_line, const char *lvalue,
346 int ltype, const char *rvalue, void *data, void *userdata);
348 int config_parse_label(const char *unit, const char *filename, unsigned line,
349 const char *section, unsigned section_line, const char *lvalue,
350 int ltype, const char *rvalue, void *data, void *userdata);
354 Link *link_unref(Link *link);
355 Link *link_ref(Link *link);
356 int link_get(Manager *m, int ifindex, Link **ret);
357 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
358 void link_drop(Link *link);
360 int link_update(Link *link, sd_rtnl_message *message);
361 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
363 int link_initialized(Link *link, struct udev_device *device);
365 int link_save(Link *link);
367 bool link_has_carrier(unsigned flags, uint8_t operstate);
369 const char* link_state_to_string(LinkState s) _const_;
370 LinkState link_state_from_string(const char *s) _pure_;
372 const char* link_operstate_to_string(LinkOperationalState s) _const_;
373 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
375 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
376 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
380 const char* dhcp_support_to_string(DHCPSupport i) _const_;
381 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
383 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
384 const char *section, unsigned section_line, const char *lvalue,
385 int ltype, const char *rvalue, void *data, void *userdata);
389 int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
390 int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
391 void address_pool_free(AddressPool *p);
393 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
395 /* Macros which append INTERFACE= to the message */
397 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
398 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
399 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
400 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
401 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
402 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
404 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
406 #define ADDRESS_FMT_VAL(address) \
407 (address).s_addr & 0xFF, \
408 ((address).s_addr >> 8) & 0xFF, \
409 ((address).s_addr >> 16) & 0xFF, \
410 (address).s_addr >> 24