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
45 #define DHCP_STATIC_ROUTE_METRIC 1024
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 struct netdev_enslave_callback netdev_enslave_callback;
57 struct netdev_enslave_callback {
58 sd_rtnl_message_handler_t callback;
61 LIST_FIELDS(netdev_enslave_callback, callbacks);
64 typedef enum MacVlanMode {
65 NETDEV_MACVLAN_MODE_PRIVATE = MACVLAN_MODE_PRIVATE,
66 NETDEV_MACVLAN_MODE_VEPA = MACVLAN_MODE_VEPA,
67 NETDEV_MACVLAN_MODE_BRIDGE = MACVLAN_MODE_BRIDGE,
68 NETDEV_MACVLAN_MODE_PASSTHRU = MACVLAN_MODE_PASSTHRU,
69 _NETDEV_MACVLAN_MODE_MAX,
70 _NETDEV_MACVLAN_MODE_INVALID = -1
73 typedef enum NetDevKind {
88 _NETDEV_KIND_INVALID = -1
91 typedef enum NetDevState {
93 NETDEV_STATE_CREATING,
97 _NETDEV_STATE_INVALID = -1,
107 Condition *match_host;
108 Condition *match_virt;
109 Condition *match_kernel;
110 Condition *match_arch;
118 struct ether_addr *mac;
119 struct ether_addr *mac_peer;
124 int32_t macvlan_mode;
129 bool tunnel_pmtudisc;
137 struct in_addr local;
138 struct in_addr remote;
139 struct in_addr group;
141 LIST_HEAD(netdev_enslave_callback, callbacks);
144 typedef enum DHCPSupport {
150 _DHCP_SUPPORT_INVALID = -1,
158 struct ether_addr *match_mac;
163 Condition *match_host;
164 Condition *match_virt;
165 Condition *match_kernel;
166 Condition *match_arch;
180 bool dhcp_domainname;
188 LIST_HEAD(Address, static_addresses);
189 LIST_HEAD(Route, static_routes);
191 Hashmap *addresses_by_section;
192 Hashmap *routes_by_section;
194 LIST_HEAD(Address, dns);
195 LIST_HEAD(Address, ntp);
197 LIST_FIELDS(Network, networks);
204 unsigned char family;
205 unsigned char prefixlen;
209 struct in_addr broadcast;
210 struct ifa_cacheinfo cinfo;
212 union in_addr_union in_addr;
214 LIST_FIELDS(Address, addresses);
221 unsigned char family;
222 unsigned char dst_prefixlen;
226 union in_addr_union in_addr;
227 union in_addr_union dst_addr;
229 LIST_FIELDS(Route, routes);
232 typedef enum LinkState {
233 LINK_STATE_INITIALIZING,
234 LINK_STATE_ENSLAVING,
235 LINK_STATE_SETTING_ADDRESSES,
236 LINK_STATE_SETTING_ROUTES,
237 LINK_STATE_CONFIGURED,
238 LINK_STATE_UNMANAGED,
242 _LINK_STATE_INVALID = -1
245 typedef enum LinkOperationalState {
246 LINK_OPERSTATE_UNKNOWN,
247 LINK_OPERSTATE_DORMANT,
248 LINK_OPERSTATE_CARRIER,
249 LINK_OPERSTATE_DEGRADED,
250 LINK_OPERSTATE_ROUTABLE,
252 _LINK_OPERSTATE_INVALID = -1
253 } LinkOperationalState;
263 struct ether_addr mac;
264 struct udev_device *udev_device;
267 uint8_t kernel_operstate;
272 LinkOperationalState operstate;
274 unsigned addr_messages;
275 unsigned route_messages;
278 LIST_HEAD(Address, addresses);
280 sd_dhcp_client *dhcp_client;
281 sd_dhcp_lease *dhcp_lease;
283 uint16_t original_mtu;
286 LIST_HEAD(Address, pool_addresses);
288 sd_dhcp_server *dhcp_server;
290 sd_icmp6_nd *icmp6_router_discovery;
291 sd_dhcp6_client *dhcp6_client;
300 union in_addr_union in_addr;
302 LIST_FIELDS(AddressPool, address_pools);
310 struct udev_monitor *udev_monitor;
311 sd_event_source *udev_event_source;
312 sd_event_source *sigterm_event_source;
313 sd_event_source *sigint_event_source;
319 LIST_HEAD(Network, networks);
320 LIST_HEAD(AddressPool, address_pools);
322 usec_t network_dirs_ts_usec;
325 extern const char* const network_dirs[];
329 int manager_new(Manager **ret);
330 void manager_free(Manager *m);
332 int manager_load_config(Manager *m);
333 bool manager_should_reload(Manager *m);
335 int manager_rtnl_enumerate_links(Manager *m);
337 int manager_rtnl_listen(Manager *m);
338 int manager_udev_listen(Manager *m);
339 int manager_bus_listen(Manager *m);
341 int manager_save(Manager *m);
343 int manager_address_pool_acquire(Manager *m, unsigned family, unsigned prefixlen, union in_addr_union *found);
345 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
346 #define _cleanup_manager_free_ _cleanup_(manager_freep)
350 #define VLANID_MAX 4094
352 int netdev_load(Manager *manager);
353 void netdev_drop(NetDev *netdev);
355 NetDev *netdev_unref(NetDev *netdev);
356 NetDev *netdev_ref(NetDev *netdev);
358 DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
359 #define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)
361 int netdev_get(Manager *manager, const char *name, NetDev **ret);
362 int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *newlink);
363 int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb);
364 int netdev_create_tunnel(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
365 int netdev_create_veth(NetDev *netdev, sd_rtnl_message_handler_t callback);
366 int netdev_create_vxlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
367 int netdev_create_vlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
368 int netdev_create_macvlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
369 int netdev_create_dummy(NetDev *netdev, sd_rtnl_message_handler_t callback);
370 int netdev_create_tuntap(NetDev *netdev);
372 const char *netdev_kind_to_string(NetDevKind d) _const_;
373 NetDevKind netdev_kind_from_string(const char *d) _pure_;
375 const char *macvlan_mode_to_string(MacVlanMode d) _const_;
376 MacVlanMode macvlan_mode_from_string(const char *d) _pure_;
378 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);
380 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);
383 const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, unsigned length);
387 int network_load(Manager *manager);
389 void network_free(Network *network);
391 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
392 #define _cleanup_network_free_ _cleanup_(network_freep)
394 int network_get(Manager *manager, struct udev_device *device,
395 const char *ifname, const struct ether_addr *mac,
397 int network_apply(Manager *manager, Network *network, Link *link);
399 int config_parse_netdev(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_tunnel(const char *unit,
404 const char *filename,
407 unsigned section_line,
414 int config_parse_tunnel_address(const char *unit,
415 const char *filename,
418 unsigned section_line,
426 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
429 int route_new_static(Network *network, unsigned section, Route **ret);
430 int route_new_dynamic(Route **ret);
431 void route_free(Route *route);
432 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
433 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
436 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
437 #define _cleanup_route_free_ _cleanup_(route_freep)
439 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
440 const char *section, unsigned section_line, const char *lvalue,
441 int ltype, const char *rvalue, void *data, void *userdata);
443 int config_parse_destination(const char *unit, const char *filename, unsigned line,
444 const char *section, unsigned section_line, const char *lvalue,
445 int ltype, const char *rvalue, void *data, void *userdata);
448 int address_new_static(Network *network, unsigned section, Address **ret);
449 int address_new_dynamic(Address **ret);
450 void address_free(Address *address);
451 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
452 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
453 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
454 bool address_equal(Address *a1, Address *a2);
456 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
457 #define _cleanup_address_free_ _cleanup_(address_freep)
459 int config_parse_dns(const char *unit, const char *filename, unsigned line,
460 const char *section, unsigned section_line, const char *lvalue,
461 int ltype, const char *rvalue, void *data, void *userdata);
463 int config_parse_address(const char *unit, const char *filename, unsigned line,
464 const char *section, unsigned section_line, const char *lvalue,
465 int ltype, const char *rvalue, void *data, void *userdata);
467 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
468 const char *section, unsigned section_line, const char *lvalue,
469 int ltype, const char *rvalue, void *data, void *userdata);
471 int config_parse_label(const char *unit, const char *filename, unsigned line,
472 const char *section, unsigned section_line, const char *lvalue,
473 int ltype, const char *rvalue, void *data, void *userdata);
477 Link *link_unref(Link *link);
478 Link *link_ref(Link *link);
479 int link_get(Manager *m, int ifindex, Link **ret);
480 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
481 void link_drop(Link *link);
483 int link_update(Link *link, sd_rtnl_message *message);
484 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
486 int link_initialized(Link *link, struct udev_device *device);
488 int link_save(Link *link);
490 bool link_has_carrier(unsigned flags, uint8_t operstate);
492 const char* link_state_to_string(LinkState s) _const_;
493 LinkState link_state_from_string(const char *s) _pure_;
495 const char* link_operstate_to_string(LinkOperationalState s) _const_;
496 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
498 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
499 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
503 const char* dhcp_support_to_string(DHCPSupport i) _const_;
504 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
506 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
507 const char *section, unsigned section_line, const char *lvalue,
508 int ltype, const char *rvalue, void *data, void *userdata);
512 int address_pool_new(Manager *m, AddressPool **ret, unsigned family, const union in_addr_union *u, unsigned prefixlen);
513 int address_pool_new_from_string(Manager *m, AddressPool **ret, unsigned family, const char *p, unsigned prefixlen);
514 void address_pool_free(AddressPool *p);
516 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
518 /* Macros which append INTERFACE= to the message */
520 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
521 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
522 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
523 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
524 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
525 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
527 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
529 /* More macros which append INTERFACE= to the message */
531 #define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->ifname, "%-*s: " fmt, IFNAMSIZ, netdev->ifname, ##__VA_ARGS__)
532 #define log_debug_netdev(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__)
533 #define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__)
534 #define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__)
535 #define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__)
536 #define log_error_netdev(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__)
538 #define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__)
540 #define NETDEV(netdev) "INTERFACE=%s", netdev->ifname
541 #define ADDRESS_FMT_VAL(address) \
542 (address).s_addr & 0xFF, \
543 ((address).s_addr >> 8) & 0xFF, \
544 ((address).s_addr >> 16) & 0xFF, \
545 (address).s_addr >> 24