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-ipv4ll.h"
33 #include "rtnl-util.h"
37 #include "condition-util.h"
39 #define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU
41 typedef struct NetDev NetDev;
42 typedef struct Network Network;
43 typedef struct Link Link;
44 typedef struct Address Address;
45 typedef struct Route Route;
46 typedef struct Manager Manager;
48 typedef struct netdev_enslave_callback netdev_enslave_callback;
50 struct netdev_enslave_callback {
51 sd_rtnl_message_handler_t callback;
54 LIST_FIELDS(netdev_enslave_callback, callbacks);
57 typedef enum MacVlanMode {
58 NETDEV_MACVLAN_MODE_PRIVATE = MACVLAN_MODE_PRIVATE,
59 NETDEV_MACVLAN_MODE_VEPA = MACVLAN_MODE_VEPA,
60 NETDEV_MACVLAN_MODE_BRIDGE = MACVLAN_MODE_BRIDGE,
61 NETDEV_MACVLAN_MODE_PASSTHRU = MACVLAN_MODE_PASSTHRU,
62 _NETDEV_MACVLAN_MODE_MAX,
63 _NETDEV_MACVLAN_MODE_INVALID = -1
66 typedef enum NetDevKind {
75 _NETDEV_KIND_INVALID = -1
78 typedef enum NetDevState {
80 NETDEV_STATE_CREATING,
84 _NETDEV_STATE_INVALID = -1,
94 Condition *match_host;
95 Condition *match_virt;
96 Condition *match_kernel;
97 Condition *match_arch;
105 int32_t macvlan_mode;
112 struct in_addr tunnel_local;
113 struct in_addr tunnel_remote;
115 LIST_HEAD(netdev_enslave_callback, callbacks);
123 struct ether_addr *match_mac;
128 Condition *match_host;
129 Condition *match_virt;
130 Condition *match_kernel;
131 Condition *match_arch;
143 bool dhcp_domainname;
147 LIST_HEAD(Address, static_addresses);
148 LIST_HEAD(Route, static_routes);
150 Hashmap *addresses_by_section;
151 Hashmap *routes_by_section;
155 LIST_FIELDS(Network, networks);
162 unsigned char family;
163 unsigned char prefixlen;
167 struct in_addr broadcast;
168 struct ifa_cacheinfo cinfo;
175 LIST_FIELDS(Address, addresses);
182 unsigned char family;
183 unsigned char dst_prefixlen;
197 LIST_FIELDS(Route, routes);
200 typedef enum LinkState {
201 LINK_STATE_INITIALIZING,
202 LINK_STATE_ENSLAVING,
203 LINK_STATE_SETTING_ADDRESSES,
204 LINK_STATE_SETTING_ROUTES,
205 LINK_STATE_CONFIGURED,
206 LINK_STATE_UNMANAGED,
210 _LINK_STATE_INVALID = -1
221 struct ether_addr mac;
222 struct udev_device *udev_device;
231 unsigned addr_messages;
232 unsigned route_messages;
235 sd_dhcp_client *dhcp_client;
236 sd_dhcp_lease *dhcp_lease;
238 uint16_t original_mtu;
247 struct udev_monitor *udev_monitor;
248 sd_event_source *udev_event_source;
249 sd_event_source *sigterm_event_source;
250 sd_event_source *sigint_event_source;
256 LIST_HEAD(Network, networks);
257 LIST_HEAD(Address, fallback_dns);
259 usec_t network_dirs_ts_usec;
260 struct kmod_ctx *kmod_ctx;
263 extern const char* const network_dirs[];
267 int manager_new(Manager **ret);
268 void manager_free(Manager *m);
270 int manager_load_config(Manager *m);
271 bool manager_should_reload(Manager *m);
273 int manager_rtnl_enumerate_links(Manager *m);
275 int manager_rtnl_listen(Manager *m);
276 int manager_udev_listen(Manager *m);
277 int manager_bus_listen(Manager *m);
279 int manager_update_resolv_conf(Manager *m);
280 int manager_save(Manager *m);
282 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
283 #define _cleanup_manager_free_ _cleanup_(manager_freep)
287 int netdev_load(Manager *manager);
288 void netdev_drop(NetDev *netdev);
290 NetDev *netdev_unref(NetDev *netdev);
291 NetDev *netdev_ref(NetDev *netdev);
293 DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
294 #define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)
296 int netdev_get(Manager *manager, const char *name, NetDev **ret);
297 int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *newlink);
298 int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb);
299 int netdev_create_tunnel(Link *link, sd_rtnl_message_handler_t callback);
301 const char *netdev_kind_to_string(NetDevKind d) _const_;
302 NetDevKind netdev_kind_from_string(const char *d) _pure_;
304 const char *macvlan_mode_to_string(MacVlanMode d) _const_;
305 MacVlanMode macvlan_mode_from_string(const char *d) _pure_;
307 int config_parse_netdev_kind(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
309 int config_parse_macvlan_mode(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
312 const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, unsigned length);
316 int network_load(Manager *manager);
318 void network_free(Network *network);
320 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
321 #define _cleanup_network_free_ _cleanup_(network_freep)
323 int network_get(Manager *manager, struct udev_device *device,
324 const char *ifname, const struct ether_addr *mac,
326 int network_apply(Manager *manager, Network *network, Link *link);
328 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
329 const char *section, unsigned section_line, const char *lvalue,
330 int ltype, const char *rvalue, void *data, void *userdata);
332 int config_parse_tunnel(const char *unit,
333 const char *filename,
336 unsigned section_line,
343 int config_parse_tunnel_address(const char *unit,
344 const char *filename,
347 unsigned section_line,
355 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
358 int route_new_static(Network *network, unsigned section, Route **ret);
359 int route_new_dynamic(Route **ret);
360 void route_free(Route *route);
361 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
362 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
365 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
366 #define _cleanup_route_free_ _cleanup_(route_freep)
368 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
369 const char *section, unsigned section_line, const char *lvalue,
370 int ltype, const char *rvalue, void *data, void *userdata);
372 int config_parse_destination(const char *unit, const char *filename, unsigned line,
373 const char *section, unsigned section_line, const char *lvalue,
374 int ltype, const char *rvalue, void *data, void *userdata);
377 int address_new_static(Network *network, unsigned section, Address **ret);
378 int address_new_dynamic(Address **ret);
379 void address_free(Address *address);
380 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
381 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
382 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
384 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
385 #define _cleanup_address_free_ _cleanup_(address_freep)
387 int config_parse_dns(const char *unit, const char *filename, unsigned line,
388 const char *section, unsigned section_line, const char *lvalue,
389 int ltype, const char *rvalue, void *data, void *userdata);
391 int config_parse_address(const char *unit, const char *filename, unsigned line,
392 const char *section, unsigned section_line, const char *lvalue,
393 int ltype, const char *rvalue, void *data, void *userdata);
395 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
396 const char *section, unsigned section_line, const char *lvalue,
397 int ltype, const char *rvalue, void *data, void *userdata);
399 int config_parse_label(const char *unit, const char *filename, unsigned line,
400 const char *section, unsigned section_line, const char *lvalue,
401 int ltype, const char *rvalue, void *data, void *userdata);
405 Link *link_unref(Link *link);
406 Link *link_ref(Link *link);
407 int link_get(Manager *m, int ifindex, Link **ret);
408 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
409 void link_drop(Link *link);
411 int link_update(Link *link, sd_rtnl_message *message);
412 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
414 int link_initialized(Link *link, struct udev_device *device);
416 int link_save(Link *link);
418 bool link_has_carrier(unsigned flags, uint8_t operstate);
420 const char* link_state_to_string(LinkState s) _const_;
421 LinkState link_state_from_string(const char *s) _pure_;
423 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
424 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
426 /* Macros which append INTERFACE= to the message */
428 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
429 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
430 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
431 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
432 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
433 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
435 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
437 /* More macros which append INTERFACE= to the message */
439 #define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->ifname, "%*s: " fmt, IFNAMSIZ, netdev->ifname, ##__VA_ARGS__)
440 #define log_debug_netdev(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__)
441 #define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__)
442 #define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__)
443 #define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__)
444 #define log_error_netdev(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__)
446 #define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__)
448 #define NETDEV(netdev) "INTERFACE=%s", netdev->ifname
449 #define ADDRESS_FMT_VAL(address) \
450 (address).s_addr & 0xFF, \
451 ((address).s_addr >> 8) & 0xFF, \
452 ((address).s_addr >> 16) & 0xFF, \
453 (address).s_addr >> 24