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;
215 LIST_FIELDS(Address, addresses);
222 unsigned char family;
223 unsigned char dst_prefixlen;
227 union in_addr_union in_addr;
228 union in_addr_union dst_addr;
230 LIST_FIELDS(Route, routes);
233 typedef enum LinkState {
234 LINK_STATE_INITIALIZING,
235 LINK_STATE_ENSLAVING,
236 LINK_STATE_SETTING_ADDRESSES,
237 LINK_STATE_SETTING_ROUTES,
238 LINK_STATE_CONFIGURED,
239 LINK_STATE_UNMANAGED,
243 _LINK_STATE_INVALID = -1
246 typedef enum LinkOperationalState {
247 LINK_OPERSTATE_UNKNOWN,
248 LINK_OPERSTATE_DORMANT,
249 LINK_OPERSTATE_CARRIER,
250 LINK_OPERSTATE_DEGRADED,
251 LINK_OPERSTATE_ROUTABLE,
253 _LINK_OPERSTATE_INVALID = -1
254 } LinkOperationalState;
264 struct ether_addr mac;
265 struct udev_device *udev_device;
268 uint8_t kernel_operstate;
273 LinkOperationalState operstate;
275 unsigned addr_messages;
276 unsigned route_messages;
279 LIST_HEAD(Address, addresses);
281 sd_dhcp_client *dhcp_client;
282 sd_dhcp_lease *dhcp_lease;
284 uint16_t original_mtu;
287 LIST_HEAD(Address, pool_addresses);
289 sd_dhcp_server *dhcp_server;
291 sd_icmp6_nd *icmp6_router_discovery;
292 sd_dhcp6_client *dhcp6_client;
301 union in_addr_union in_addr;
303 LIST_FIELDS(AddressPool, address_pools);
311 struct udev_monitor *udev_monitor;
312 sd_event_source *udev_event_source;
313 sd_event_source *sigterm_event_source;
314 sd_event_source *sigint_event_source;
320 LIST_HEAD(Network, networks);
321 LIST_HEAD(AddressPool, address_pools);
323 usec_t network_dirs_ts_usec;
326 extern const char* const network_dirs[];
330 int manager_new(Manager **ret);
331 void manager_free(Manager *m);
333 int manager_load_config(Manager *m);
334 bool manager_should_reload(Manager *m);
336 int manager_rtnl_enumerate_links(Manager *m);
338 int manager_rtnl_listen(Manager *m);
339 int manager_udev_listen(Manager *m);
340 int manager_bus_listen(Manager *m);
342 int manager_save(Manager *m);
344 int manager_address_pool_acquire(Manager *m, unsigned family, unsigned prefixlen, union in_addr_union *found);
346 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
347 #define _cleanup_manager_free_ _cleanup_(manager_freep)
351 #define VLANID_MAX 4094
353 int netdev_load(Manager *manager);
354 void netdev_drop(NetDev *netdev);
356 NetDev *netdev_unref(NetDev *netdev);
357 NetDev *netdev_ref(NetDev *netdev);
359 DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
360 #define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)
362 int netdev_get(Manager *manager, const char *name, NetDev **ret);
363 int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *newlink);
364 int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb);
365 int netdev_create_tunnel(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
366 int netdev_create_veth(NetDev *netdev, sd_rtnl_message_handler_t callback);
367 int netdev_create_vxlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
368 int netdev_create_vlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
369 int netdev_create_macvlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
370 int netdev_create_dummy(NetDev *netdev, sd_rtnl_message_handler_t callback);
371 int netdev_create_tuntap(NetDev *netdev);
373 const char *netdev_kind_to_string(NetDevKind d) _const_;
374 NetDevKind netdev_kind_from_string(const char *d) _pure_;
376 const char *macvlan_mode_to_string(MacVlanMode d) _const_;
377 MacVlanMode macvlan_mode_from_string(const char *d) _pure_;
379 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);
381 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);
384 const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, unsigned length);
388 int network_load(Manager *manager);
390 void network_free(Network *network);
392 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
393 #define _cleanup_network_free_ _cleanup_(network_freep)
395 int network_get(Manager *manager, struct udev_device *device,
396 const char *ifname, const struct ether_addr *mac,
398 int network_apply(Manager *manager, Network *network, Link *link);
400 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
401 const char *section, unsigned section_line, const char *lvalue,
402 int ltype, const char *rvalue, void *data, void *userdata);
404 int config_parse_tunnel(const char *unit,
405 const char *filename,
408 unsigned section_line,
415 int config_parse_tunnel_address(const char *unit,
416 const char *filename,
419 unsigned section_line,
427 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
430 int route_new_static(Network *network, unsigned section, Route **ret);
431 int route_new_dynamic(Route **ret);
432 void route_free(Route *route);
433 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
434 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
437 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
438 #define _cleanup_route_free_ _cleanup_(route_freep)
440 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
441 const char *section, unsigned section_line, const char *lvalue,
442 int ltype, const char *rvalue, void *data, void *userdata);
444 int config_parse_destination(const char *unit, const char *filename, unsigned line,
445 const char *section, unsigned section_line, const char *lvalue,
446 int ltype, const char *rvalue, void *data, void *userdata);
449 int address_new_static(Network *network, unsigned section, Address **ret);
450 int address_new_dynamic(Address **ret);
451 void address_free(Address *address);
452 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
453 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
454 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
455 bool address_equal(Address *a1, Address *a2);
457 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
458 #define _cleanup_address_free_ _cleanup_(address_freep)
460 int config_parse_dns(const char *unit, const char *filename, unsigned line,
461 const char *section, unsigned section_line, const char *lvalue,
462 int ltype, const char *rvalue, void *data, void *userdata);
464 int config_parse_address(const char *unit, const char *filename, unsigned line,
465 const char *section, unsigned section_line, const char *lvalue,
466 int ltype, const char *rvalue, void *data, void *userdata);
468 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
469 const char *section, unsigned section_line, const char *lvalue,
470 int ltype, const char *rvalue, void *data, void *userdata);
472 int config_parse_label(const char *unit, const char *filename, unsigned line,
473 const char *section, unsigned section_line, const char *lvalue,
474 int ltype, const char *rvalue, void *data, void *userdata);
478 Link *link_unref(Link *link);
479 Link *link_ref(Link *link);
480 int link_get(Manager *m, int ifindex, Link **ret);
481 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
482 void link_drop(Link *link);
484 int link_update(Link *link, sd_rtnl_message *message);
485 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
487 int link_initialized(Link *link, struct udev_device *device);
489 int link_save(Link *link);
491 bool link_has_carrier(unsigned flags, uint8_t operstate);
493 const char* link_state_to_string(LinkState s) _const_;
494 LinkState link_state_from_string(const char *s) _pure_;
496 const char* link_operstate_to_string(LinkOperationalState s) _const_;
497 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
499 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
500 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
504 const char* dhcp_support_to_string(DHCPSupport i) _const_;
505 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
507 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
508 const char *section, unsigned section_line, const char *lvalue,
509 int ltype, const char *rvalue, void *data, void *userdata);
513 int address_pool_new(Manager *m, AddressPool **ret, unsigned family, const union in_addr_union *u, unsigned prefixlen);
514 int address_pool_new_from_string(Manager *m, AddressPool **ret, unsigned family, const char *p, unsigned prefixlen);
515 void address_pool_free(AddressPool *p);
517 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
519 /* Macros which append INTERFACE= to the message */
521 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
522 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
523 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
524 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
525 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
526 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
528 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
530 /* More macros which append INTERFACE= to the message */
532 #define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->ifname, "%-*s: " fmt, IFNAMSIZ, netdev->ifname, ##__VA_ARGS__)
533 #define log_debug_netdev(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__)
534 #define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__)
535 #define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__)
536 #define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__)
537 #define log_error_netdev(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__)
539 #define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__)
541 #define NETDEV(netdev) "INTERFACE=%s", netdev->ifname
542 #define ADDRESS_FMT_VAL(address) \
543 (address).s_addr & 0xFF, \
544 ((address).s_addr >> 8) & 0xFF, \
545 ((address).s_addr >> 16) & 0xFF, \
546 (address).s_addr >> 24