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"
34 #include "rtnl-util.h"
38 #include "condition-util.h"
40 #define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU
41 #define VXLAN_VID_MAX (1u << 24) - 1
43 typedef struct NetDev NetDev;
44 typedef struct Network Network;
45 typedef struct Link Link;
46 typedef struct Address Address;
47 typedef struct Route Route;
48 typedef struct Manager Manager;
50 typedef struct netdev_enslave_callback netdev_enslave_callback;
52 struct netdev_enslave_callback {
53 sd_rtnl_message_handler_t callback;
56 LIST_FIELDS(netdev_enslave_callback, callbacks);
59 typedef enum MacVlanMode {
60 NETDEV_MACVLAN_MODE_PRIVATE = MACVLAN_MODE_PRIVATE,
61 NETDEV_MACVLAN_MODE_VEPA = MACVLAN_MODE_VEPA,
62 NETDEV_MACVLAN_MODE_BRIDGE = MACVLAN_MODE_BRIDGE,
63 NETDEV_MACVLAN_MODE_PASSTHRU = MACVLAN_MODE_PASSTHRU,
64 _NETDEV_MACVLAN_MODE_MAX,
65 _NETDEV_MACVLAN_MODE_INVALID = -1
68 typedef enum NetDevKind {
80 _NETDEV_KIND_INVALID = -1
83 typedef enum NetDevState {
85 NETDEV_STATE_CREATING,
89 _NETDEV_STATE_INVALID = -1,
99 Condition *match_host;
100 Condition *match_virt;
101 Condition *match_kernel;
102 Condition *match_arch;
108 struct ether_addr *mac;
109 struct ether_addr *mac_peer;
114 int32_t macvlan_mode;
119 bool tunnel_pmtudisc;
123 struct in_addr local;
124 struct in_addr remote;
125 struct in_addr group;
127 LIST_HEAD(netdev_enslave_callback, callbacks);
135 struct ether_addr *match_mac;
140 Condition *match_host;
141 Condition *match_virt;
142 Condition *match_kernel;
143 Condition *match_arch;
157 bool dhcp_domainname;
163 LIST_HEAD(Address, static_addresses);
164 LIST_HEAD(Route, static_routes);
166 Hashmap *addresses_by_section;
167 Hashmap *routes_by_section;
169 LIST_HEAD(Address, dns);
170 LIST_HEAD(Address, ntp);
172 LIST_FIELDS(Network, networks);
179 unsigned char family;
180 unsigned char prefixlen;
184 struct in_addr broadcast;
185 struct ifa_cacheinfo cinfo;
192 LIST_FIELDS(Address, addresses);
199 unsigned char family;
200 unsigned char dst_prefixlen;
214 LIST_FIELDS(Route, routes);
217 typedef enum LinkState {
218 LINK_STATE_INITIALIZING,
219 LINK_STATE_ENSLAVING,
220 LINK_STATE_SETTING_ADDRESSES,
221 LINK_STATE_SETTING_ROUTES,
222 LINK_STATE_CONFIGURED,
223 LINK_STATE_UNMANAGED,
227 _LINK_STATE_INVALID = -1
230 typedef enum LinkOperationalState {
231 LINK_OPERSTATE_UNKNOWN,
232 LINK_OPERSTATE_DORMANT,
233 LINK_OPERSTATE_CARRIER,
234 LINK_OPERSTATE_DEGRADED,
235 LINK_OPERSTATE_ROUTABLE,
237 _LINK_OPERSTATE_INVALID = -1
238 } LinkOperationalState;
248 struct ether_addr mac;
249 struct udev_device *udev_device;
252 uint8_t kernel_operstate;
257 LinkOperationalState operstate;
259 unsigned addr_messages;
260 unsigned route_messages;
263 LIST_HEAD(Address, addresses);
265 sd_dhcp_client *dhcp_client;
266 sd_dhcp_lease *dhcp_lease;
268 uint16_t original_mtu;
271 sd_dhcp_server *dhcp_server;
279 struct udev_monitor *udev_monitor;
280 sd_event_source *udev_event_source;
281 sd_event_source *sigterm_event_source;
282 sd_event_source *sigint_event_source;
288 LIST_HEAD(Network, networks);
290 usec_t network_dirs_ts_usec;
293 extern const char* const network_dirs[];
297 int manager_new(Manager **ret);
298 void manager_free(Manager *m);
300 int manager_load_config(Manager *m);
301 bool manager_should_reload(Manager *m);
303 int manager_rtnl_enumerate_links(Manager *m);
305 int manager_rtnl_listen(Manager *m);
306 int manager_udev_listen(Manager *m);
307 int manager_bus_listen(Manager *m);
309 int manager_save(Manager *m);
311 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
312 #define _cleanup_manager_free_ _cleanup_(manager_freep)
316 int netdev_load(Manager *manager);
317 void netdev_drop(NetDev *netdev);
319 NetDev *netdev_unref(NetDev *netdev);
320 NetDev *netdev_ref(NetDev *netdev);
322 DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
323 #define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)
325 int netdev_get(Manager *manager, const char *name, NetDev **ret);
326 int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *newlink);
327 int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb);
328 int netdev_create_tunnel(Link *link, sd_rtnl_message_handler_t callback);
329 int netdev_create_veth(NetDev *netdev, sd_rtnl_message_handler_t callback);
330 int netdev_create_vxlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
332 const char *netdev_kind_to_string(NetDevKind d) _const_;
333 NetDevKind netdev_kind_from_string(const char *d) _pure_;
335 const char *macvlan_mode_to_string(MacVlanMode d) _const_;
336 MacVlanMode macvlan_mode_from_string(const char *d) _pure_;
338 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);
340 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);
343 const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, unsigned length);
347 int network_load(Manager *manager);
349 void network_free(Network *network);
351 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
352 #define _cleanup_network_free_ _cleanup_(network_freep)
354 int network_get(Manager *manager, struct udev_device *device,
355 const char *ifname, const struct ether_addr *mac,
357 int network_apply(Manager *manager, Network *network, Link *link);
359 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
360 const char *section, unsigned section_line, const char *lvalue,
361 int ltype, const char *rvalue, void *data, void *userdata);
363 int config_parse_tunnel(const char *unit,
364 const char *filename,
367 unsigned section_line,
374 int config_parse_tunnel_address(const char *unit,
375 const char *filename,
378 unsigned section_line,
386 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
389 int route_new_static(Network *network, unsigned section, Route **ret);
390 int route_new_dynamic(Route **ret);
391 void route_free(Route *route);
392 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
393 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
396 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
397 #define _cleanup_route_free_ _cleanup_(route_freep)
399 int config_parse_gateway(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);
403 int config_parse_destination(const char *unit, const char *filename, unsigned line,
404 const char *section, unsigned section_line, const char *lvalue,
405 int ltype, const char *rvalue, void *data, void *userdata);
408 int address_new_static(Network *network, unsigned section, Address **ret);
409 int address_new_dynamic(Address **ret);
410 void address_free(Address *address);
411 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
412 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
413 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
414 bool address_equal(Address *a1, Address *a2);
416 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
417 #define _cleanup_address_free_ _cleanup_(address_freep)
419 int config_parse_dns(const char *unit, const char *filename, unsigned line,
420 const char *section, unsigned section_line, const char *lvalue,
421 int ltype, const char *rvalue, void *data, void *userdata);
423 int config_parse_address(const char *unit, const char *filename, unsigned line,
424 const char *section, unsigned section_line, const char *lvalue,
425 int ltype, const char *rvalue, void *data, void *userdata);
427 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
428 const char *section, unsigned section_line, const char *lvalue,
429 int ltype, const char *rvalue, void *data, void *userdata);
431 int config_parse_label(const char *unit, const char *filename, unsigned line,
432 const char *section, unsigned section_line, const char *lvalue,
433 int ltype, const char *rvalue, void *data, void *userdata);
437 Link *link_unref(Link *link);
438 Link *link_ref(Link *link);
439 int link_get(Manager *m, int ifindex, Link **ret);
440 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
441 void link_drop(Link *link);
443 int link_update(Link *link, sd_rtnl_message *message);
444 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
446 int link_initialized(Link *link, struct udev_device *device);
448 int link_save(Link *link);
450 bool link_has_carrier(unsigned flags, uint8_t operstate);
452 const char* link_state_to_string(LinkState s) _const_;
453 LinkState link_state_from_string(const char *s) _pure_;
455 const char* link_operstate_to_string(LinkOperationalState s) _const_;
456 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
458 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
459 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
461 /* Macros which append INTERFACE= to the message */
463 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
464 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
465 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
466 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
467 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
468 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
470 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
472 /* More macros which append INTERFACE= to the message */
474 #define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->ifname, "%-*s: " fmt, IFNAMSIZ, netdev->ifname, ##__VA_ARGS__)
475 #define log_debug_netdev(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__)
476 #define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__)
477 #define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__)
478 #define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__)
479 #define log_error_netdev(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__)
481 #define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__)
483 #define NETDEV(netdev) "INTERFACE=%s", netdev->ifname
484 #define ADDRESS_FMT_VAL(address) \
485 (address).s_addr & 0xFF, \
486 ((address).s_addr >> 8) & 0xFF, \
487 ((address).s_addr >> 16) & 0xFF, \
488 (address).s_addr >> 24