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 unsigned char family;
138 union in_addr_union local;
139 union in_addr_union remote;
140 union in_addr_union group;
142 LIST_HEAD(netdev_enslave_callback, callbacks);
145 typedef enum DHCPSupport {
151 _DHCP_SUPPORT_INVALID = -1,
159 struct ether_addr *match_mac;
164 Condition *match_host;
165 Condition *match_virt;
166 Condition *match_kernel;
167 Condition *match_arch;
181 bool dhcp_domainname;
189 LIST_HEAD(Address, static_addresses);
190 LIST_HEAD(Route, static_routes);
192 Hashmap *addresses_by_section;
193 Hashmap *routes_by_section;
195 LIST_HEAD(Address, dns);
196 LIST_HEAD(Address, ntp);
198 LIST_FIELDS(Network, networks);
205 unsigned char family;
206 unsigned char prefixlen;
210 struct in_addr broadcast;
211 struct ifa_cacheinfo cinfo;
213 union in_addr_union in_addr;
214 union in_addr_union in_addr_peer;
216 LIST_FIELDS(Address, addresses);
223 unsigned char family;
224 unsigned char dst_prefixlen;
228 union in_addr_union in_addr;
229 union in_addr_union dst_addr;
231 LIST_FIELDS(Route, routes);
234 typedef enum LinkState {
235 LINK_STATE_INITIALIZING,
236 LINK_STATE_ENSLAVING,
237 LINK_STATE_SETTING_ADDRESSES,
238 LINK_STATE_SETTING_ROUTES,
239 LINK_STATE_CONFIGURED,
240 LINK_STATE_UNMANAGED,
244 _LINK_STATE_INVALID = -1
247 typedef enum LinkOperationalState {
248 LINK_OPERSTATE_UNKNOWN,
249 LINK_OPERSTATE_DORMANT,
250 LINK_OPERSTATE_CARRIER,
251 LINK_OPERSTATE_DEGRADED,
252 LINK_OPERSTATE_ROUTABLE,
254 _LINK_OPERSTATE_INVALID = -1
255 } LinkOperationalState;
265 struct ether_addr mac;
266 struct udev_device *udev_device;
269 uint8_t kernel_operstate;
274 LinkOperationalState operstate;
276 unsigned addr_messages;
277 unsigned route_messages;
280 LIST_HEAD(Address, addresses);
282 sd_dhcp_client *dhcp_client;
283 sd_dhcp_lease *dhcp_lease;
285 uint16_t original_mtu;
288 LIST_HEAD(Address, pool_addresses);
290 sd_dhcp_server *dhcp_server;
292 sd_icmp6_nd *icmp6_router_discovery;
293 sd_dhcp6_client *dhcp6_client;
302 union in_addr_union in_addr;
304 LIST_FIELDS(AddressPool, address_pools);
312 struct udev_monitor *udev_monitor;
313 sd_event_source *udev_event_source;
314 sd_event_source *sigterm_event_source;
315 sd_event_source *sigint_event_source;
321 LIST_HEAD(Network, networks);
322 LIST_HEAD(AddressPool, address_pools);
324 usec_t network_dirs_ts_usec;
327 extern const char* const network_dirs[];
331 int manager_new(Manager **ret);
332 void manager_free(Manager *m);
334 int manager_load_config(Manager *m);
335 bool manager_should_reload(Manager *m);
337 int manager_rtnl_enumerate_links(Manager *m);
339 int manager_rtnl_listen(Manager *m);
340 int manager_udev_listen(Manager *m);
341 int manager_bus_listen(Manager *m);
343 int manager_save(Manager *m);
345 int manager_address_pool_acquire(Manager *m, unsigned family, unsigned prefixlen, union in_addr_union *found);
347 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
348 #define _cleanup_manager_free_ _cleanup_(manager_freep)
352 #define VLANID_MAX 4094
354 int netdev_load(Manager *manager);
355 void netdev_drop(NetDev *netdev);
357 NetDev *netdev_unref(NetDev *netdev);
358 NetDev *netdev_ref(NetDev *netdev);
360 DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
361 #define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)
363 int netdev_get(Manager *manager, const char *name, NetDev **ret);
364 int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *newlink);
365 int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb);
366 int netdev_create_tunnel(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
367 int netdev_create_veth(NetDev *netdev, sd_rtnl_message_handler_t callback);
368 int netdev_create_vxlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
369 int netdev_create_vlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
370 int netdev_create_macvlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
371 int netdev_create_dummy(NetDev *netdev, sd_rtnl_message_handler_t callback);
372 int netdev_create_tuntap(NetDev *netdev);
374 const char *netdev_kind_to_string(NetDevKind d) _const_;
375 NetDevKind netdev_kind_from_string(const char *d) _pure_;
377 const char *macvlan_mode_to_string(MacVlanMode d) _const_;
378 MacVlanMode macvlan_mode_from_string(const char *d) _pure_;
380 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);
382 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);
385 const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, unsigned length);
389 int network_load(Manager *manager);
391 void network_free(Network *network);
393 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
394 #define _cleanup_network_free_ _cleanup_(network_freep)
396 int network_get(Manager *manager, struct udev_device *device,
397 const char *ifname, const struct ether_addr *mac,
399 int network_apply(Manager *manager, Network *network, Link *link);
401 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
402 const char *section, unsigned section_line, const char *lvalue,
403 int ltype, const char *rvalue, void *data, void *userdata);
405 int config_parse_tunnel(const char *unit,
406 const char *filename,
409 unsigned section_line,
416 int config_parse_tunnel_address(const char *unit,
417 const char *filename,
420 unsigned section_line,
428 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
431 int route_new_static(Network *network, unsigned section, Route **ret);
432 int route_new_dynamic(Route **ret);
433 void route_free(Route *route);
434 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
435 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
438 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
439 #define _cleanup_route_free_ _cleanup_(route_freep)
441 int config_parse_gateway(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_destination(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);
450 int address_new_static(Network *network, unsigned section, Address **ret);
451 int address_new_dynamic(Address **ret);
452 void address_free(Address *address);
453 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
454 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
455 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
456 bool address_equal(Address *a1, Address *a2);
458 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
459 #define _cleanup_address_free_ _cleanup_(address_freep)
461 int config_parse_dns(const char *unit, const char *filename, unsigned line,
462 const char *section, unsigned section_line, const char *lvalue,
463 int ltype, const char *rvalue, void *data, void *userdata);
465 int config_parse_address(const char *unit, const char *filename, unsigned line,
466 const char *section, unsigned section_line, const char *lvalue,
467 int ltype, const char *rvalue, void *data, void *userdata);
469 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
470 const char *section, unsigned section_line, const char *lvalue,
471 int ltype, const char *rvalue, void *data, void *userdata);
473 int config_parse_label(const char *unit, const char *filename, unsigned line,
474 const char *section, unsigned section_line, const char *lvalue,
475 int ltype, const char *rvalue, void *data, void *userdata);
479 Link *link_unref(Link *link);
480 Link *link_ref(Link *link);
481 int link_get(Manager *m, int ifindex, Link **ret);
482 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
483 void link_drop(Link *link);
485 int link_update(Link *link, sd_rtnl_message *message);
486 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
488 int link_initialized(Link *link, struct udev_device *device);
490 int link_save(Link *link);
492 bool link_has_carrier(unsigned flags, uint8_t operstate);
494 const char* link_state_to_string(LinkState s) _const_;
495 LinkState link_state_from_string(const char *s) _pure_;
497 const char* link_operstate_to_string(LinkOperationalState s) _const_;
498 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
500 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
501 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
505 const char* dhcp_support_to_string(DHCPSupport i) _const_;
506 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
508 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
509 const char *section, unsigned section_line, const char *lvalue,
510 int ltype, const char *rvalue, void *data, void *userdata);
514 int address_pool_new(Manager *m, AddressPool **ret, unsigned family, const union in_addr_union *u, unsigned prefixlen);
515 int address_pool_new_from_string(Manager *m, AddressPool **ret, unsigned family, const char *p, unsigned prefixlen);
516 void address_pool_free(AddressPool *p);
518 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
520 /* Macros which append INTERFACE= to the message */
522 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
523 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
524 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
525 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
526 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
527 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
529 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
531 /* More macros which append INTERFACE= to the message */
533 #define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->ifname, "%-*s: " fmt, IFNAMSIZ, netdev->ifname, ##__VA_ARGS__)
534 #define log_debug_netdev(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__)
535 #define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__)
536 #define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__)
537 #define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__)
538 #define log_error_netdev(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__)
540 #define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__)
542 #define NETDEV(netdev) "INTERFACE=%s", netdev->ifname
543 #define ADDRESS_FMT_VAL(address) \
544 (address).s_addr & 0xFF, \
545 ((address).s_addr >> 8) & 0xFF, \
546 ((address).s_addr >> 16) & 0xFF, \
547 (address).s_addr >> 24