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 "socket-util.h"
43 #define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU
44 #define VXLAN_VID_MAX (1u << 24) - 1
46 typedef struct NetDev NetDev;
47 typedef struct Network Network;
48 typedef struct Link Link;
49 typedef struct Address Address;
50 typedef struct Route Route;
51 typedef struct Manager Manager;
52 typedef struct AddressPool AddressPool;
54 typedef struct netdev_enslave_callback netdev_enslave_callback;
56 struct netdev_enslave_callback {
57 sd_rtnl_message_handler_t callback;
60 LIST_FIELDS(netdev_enslave_callback, callbacks);
63 typedef enum MacVlanMode {
64 NETDEV_MACVLAN_MODE_PRIVATE = MACVLAN_MODE_PRIVATE,
65 NETDEV_MACVLAN_MODE_VEPA = MACVLAN_MODE_VEPA,
66 NETDEV_MACVLAN_MODE_BRIDGE = MACVLAN_MODE_BRIDGE,
67 NETDEV_MACVLAN_MODE_PASSTHRU = MACVLAN_MODE_PASSTHRU,
68 _NETDEV_MACVLAN_MODE_MAX,
69 _NETDEV_MACVLAN_MODE_INVALID = -1
72 typedef enum NetDevKind {
84 _NETDEV_KIND_INVALID = -1
87 typedef enum NetDevState {
89 NETDEV_STATE_CREATING,
93 _NETDEV_STATE_INVALID = -1,
103 Condition *match_host;
104 Condition *match_virt;
105 Condition *match_kernel;
106 Condition *match_arch;
112 struct ether_addr *mac;
113 struct ether_addr *mac_peer;
118 int32_t macvlan_mode;
123 bool tunnel_pmtudisc;
127 struct in_addr local;
128 struct in_addr remote;
129 struct in_addr group;
131 LIST_HEAD(netdev_enslave_callback, callbacks);
134 typedef enum DHCPSupport {
140 _DHCP_SUPPORT_INVALID = -1,
148 struct ether_addr *match_mac;
153 Condition *match_host;
154 Condition *match_virt;
155 Condition *match_kernel;
156 Condition *match_arch;
170 bool dhcp_domainname;
176 LIST_HEAD(Address, static_addresses);
177 LIST_HEAD(Route, static_routes);
179 Hashmap *addresses_by_section;
180 Hashmap *routes_by_section;
182 LIST_HEAD(Address, dns);
183 LIST_HEAD(Address, ntp);
185 LIST_FIELDS(Network, networks);
192 unsigned char family;
193 unsigned char prefixlen;
197 struct in_addr broadcast;
198 struct ifa_cacheinfo cinfo;
200 union in_addr_union in_addr;
202 LIST_FIELDS(Address, addresses);
209 unsigned char family;
210 unsigned char dst_prefixlen;
214 union in_addr_union in_addr;
215 union in_addr_union dst_addr;
217 LIST_FIELDS(Route, routes);
220 typedef enum LinkState {
221 LINK_STATE_INITIALIZING,
222 LINK_STATE_ENSLAVING,
223 LINK_STATE_SETTING_ADDRESSES,
224 LINK_STATE_SETTING_ROUTES,
225 LINK_STATE_CONFIGURED,
226 LINK_STATE_UNMANAGED,
230 _LINK_STATE_INVALID = -1
233 typedef enum LinkOperationalState {
234 LINK_OPERSTATE_UNKNOWN,
235 LINK_OPERSTATE_DORMANT,
236 LINK_OPERSTATE_CARRIER,
237 LINK_OPERSTATE_DEGRADED,
238 LINK_OPERSTATE_ROUTABLE,
240 _LINK_OPERSTATE_INVALID = -1
241 } LinkOperationalState;
251 struct ether_addr mac;
252 struct udev_device *udev_device;
255 uint8_t kernel_operstate;
260 LinkOperationalState operstate;
262 unsigned addr_messages;
263 unsigned route_messages;
266 LIST_HEAD(Address, addresses);
268 sd_dhcp_client *dhcp_client;
269 sd_dhcp_lease *dhcp_lease;
271 uint16_t original_mtu;
274 LIST_HEAD(Address, pool_addresses);
276 sd_dhcp_server *dhcp_server;
278 sd_icmp6_nd *icmp6_router_discovery;
279 sd_dhcp6_client *dhcp6_client;
288 union in_addr_union in_addr;
290 LIST_FIELDS(AddressPool, address_pools);
298 struct udev_monitor *udev_monitor;
299 sd_event_source *udev_event_source;
300 sd_event_source *sigterm_event_source;
301 sd_event_source *sigint_event_source;
307 LIST_HEAD(Network, networks);
308 LIST_HEAD(AddressPool, address_pools);
310 usec_t network_dirs_ts_usec;
313 extern const char* const network_dirs[];
317 int manager_new(Manager **ret);
318 void manager_free(Manager *m);
320 int manager_load_config(Manager *m);
321 bool manager_should_reload(Manager *m);
323 int manager_rtnl_enumerate_links(Manager *m);
325 int manager_rtnl_listen(Manager *m);
326 int manager_udev_listen(Manager *m);
327 int manager_bus_listen(Manager *m);
329 int manager_save(Manager *m);
331 int manager_address_pool_acquire(Manager *m, unsigned family, unsigned prefixlen, union in_addr_union *found);
333 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
334 #define _cleanup_manager_free_ _cleanup_(manager_freep)
338 int netdev_load(Manager *manager);
339 void netdev_drop(NetDev *netdev);
341 NetDev *netdev_unref(NetDev *netdev);
342 NetDev *netdev_ref(NetDev *netdev);
344 DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
345 #define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)
347 int netdev_get(Manager *manager, const char *name, NetDev **ret);
348 int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *newlink);
349 int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb);
350 int netdev_create_tunnel(Link *link, sd_rtnl_message_handler_t callback);
351 int netdev_create_veth(NetDev *netdev, sd_rtnl_message_handler_t callback);
352 int netdev_create_vxlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
354 const char *netdev_kind_to_string(NetDevKind d) _const_;
355 NetDevKind netdev_kind_from_string(const char *d) _pure_;
357 const char *macvlan_mode_to_string(MacVlanMode d) _const_;
358 MacVlanMode macvlan_mode_from_string(const char *d) _pure_;
360 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);
362 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);
365 const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, unsigned length);
369 int network_load(Manager *manager);
371 void network_free(Network *network);
373 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
374 #define _cleanup_network_free_ _cleanup_(network_freep)
376 int network_get(Manager *manager, struct udev_device *device,
377 const char *ifname, const struct ether_addr *mac,
379 int network_apply(Manager *manager, Network *network, Link *link);
381 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
382 const char *section, unsigned section_line, const char *lvalue,
383 int ltype, const char *rvalue, void *data, void *userdata);
385 int config_parse_tunnel(const char *unit,
386 const char *filename,
389 unsigned section_line,
396 int config_parse_tunnel_address(const char *unit,
397 const char *filename,
400 unsigned section_line,
408 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
411 int route_new_static(Network *network, unsigned section, Route **ret);
412 int route_new_dynamic(Route **ret);
413 void route_free(Route *route);
414 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
415 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
418 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
419 #define _cleanup_route_free_ _cleanup_(route_freep)
421 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
422 const char *section, unsigned section_line, const char *lvalue,
423 int ltype, const char *rvalue, void *data, void *userdata);
425 int config_parse_destination(const char *unit, const char *filename, unsigned line,
426 const char *section, unsigned section_line, const char *lvalue,
427 int ltype, const char *rvalue, void *data, void *userdata);
430 int address_new_static(Network *network, unsigned section, Address **ret);
431 int address_new_dynamic(Address **ret);
432 void address_free(Address *address);
433 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
434 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
435 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
436 bool address_equal(Address *a1, Address *a2);
438 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
439 #define _cleanup_address_free_ _cleanup_(address_freep)
441 int config_parse_dns(const char *unit, const char *filename, unsigned line,
442 const char *section, unsigned section_line, const char *lvalue,
443 int ltype, const char *rvalue, void *data, void *userdata);
445 int config_parse_address(const char *unit, const char *filename, unsigned line,
446 const char *section, unsigned section_line, const char *lvalue,
447 int ltype, const char *rvalue, void *data, void *userdata);
449 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
450 const char *section, unsigned section_line, const char *lvalue,
451 int ltype, const char *rvalue, void *data, void *userdata);
453 int config_parse_label(const char *unit, const char *filename, unsigned line,
454 const char *section, unsigned section_line, const char *lvalue,
455 int ltype, const char *rvalue, void *data, void *userdata);
459 Link *link_unref(Link *link);
460 Link *link_ref(Link *link);
461 int link_get(Manager *m, int ifindex, Link **ret);
462 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
463 void link_drop(Link *link);
465 int link_update(Link *link, sd_rtnl_message *message);
466 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
468 int link_initialized(Link *link, struct udev_device *device);
470 int link_save(Link *link);
472 bool link_has_carrier(unsigned flags, uint8_t operstate);
474 const char* link_state_to_string(LinkState s) _const_;
475 LinkState link_state_from_string(const char *s) _pure_;
477 const char* link_operstate_to_string(LinkOperationalState s) _const_;
478 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
480 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
481 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
485 const char* dhcp_support_to_string(DHCPSupport i) _const_;
486 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
488 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
489 const char *section, unsigned section_line, const char *lvalue,
490 int ltype, const char *rvalue, void *data, void *userdata);
494 int address_pool_new(Manager *m, AddressPool **ret, unsigned family, const union in_addr_union *u, unsigned prefixlen);
495 int address_pool_new_from_string(Manager *m, AddressPool **ret, unsigned family, const char *p, unsigned prefixlen);
496 void address_pool_free(AddressPool *p);
498 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
500 /* Macros which append INTERFACE= to the message */
502 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
503 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
504 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
505 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
506 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
507 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
509 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
511 /* More macros which append INTERFACE= to the message */
513 #define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->ifname, "%-*s: " fmt, IFNAMSIZ, netdev->ifname, ##__VA_ARGS__)
514 #define log_debug_netdev(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__)
515 #define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__)
516 #define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__)
517 #define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__)
518 #define log_error_netdev(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__)
520 #define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__)
522 #define NETDEV(netdev) "INTERFACE=%s", netdev->ifname
523 #define ADDRESS_FMT_VAL(address) \
524 (address).s_addr & 0xFF, \
525 ((address).s_addr >> 8) & 0xFF, \
526 ((address).s_addr >> 16) & 0xFF, \
527 (address).s_addr >> 24