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"
39 #include "socket-util.h"
41 #define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU
42 #define VXLAN_VID_MAX (1u << 24) - 1
44 typedef struct NetDev NetDev;
45 typedef struct Network Network;
46 typedef struct Link Link;
47 typedef struct Address Address;
48 typedef struct Route Route;
49 typedef struct Manager Manager;
51 typedef struct netdev_enslave_callback netdev_enslave_callback;
53 struct netdev_enslave_callback {
54 sd_rtnl_message_handler_t callback;
57 LIST_FIELDS(netdev_enslave_callback, callbacks);
60 typedef enum MacVlanMode {
61 NETDEV_MACVLAN_MODE_PRIVATE = MACVLAN_MODE_PRIVATE,
62 NETDEV_MACVLAN_MODE_VEPA = MACVLAN_MODE_VEPA,
63 NETDEV_MACVLAN_MODE_BRIDGE = MACVLAN_MODE_BRIDGE,
64 NETDEV_MACVLAN_MODE_PASSTHRU = MACVLAN_MODE_PASSTHRU,
65 _NETDEV_MACVLAN_MODE_MAX,
66 _NETDEV_MACVLAN_MODE_INVALID = -1
69 typedef enum NetDevKind {
81 _NETDEV_KIND_INVALID = -1
84 typedef enum NetDevState {
86 NETDEV_STATE_CREATING,
90 _NETDEV_STATE_INVALID = -1,
100 Condition *match_host;
101 Condition *match_virt;
102 Condition *match_kernel;
103 Condition *match_arch;
109 struct ether_addr *mac;
110 struct ether_addr *mac_peer;
115 int32_t macvlan_mode;
120 bool tunnel_pmtudisc;
124 struct in_addr local;
125 struct in_addr remote;
126 struct in_addr group;
128 LIST_HEAD(netdev_enslave_callback, callbacks);
136 struct ether_addr *match_mac;
141 Condition *match_host;
142 Condition *match_virt;
143 Condition *match_kernel;
144 Condition *match_arch;
158 bool dhcp_domainname;
164 LIST_HEAD(Address, static_addresses);
165 LIST_HEAD(Route, static_routes);
167 Hashmap *addresses_by_section;
168 Hashmap *routes_by_section;
170 LIST_HEAD(Address, dns);
171 LIST_HEAD(Address, ntp);
173 LIST_FIELDS(Network, networks);
180 unsigned char family;
181 unsigned char prefixlen;
185 struct in_addr broadcast;
186 struct ifa_cacheinfo cinfo;
188 union in_addr_union in_addr;
190 LIST_FIELDS(Address, addresses);
197 unsigned char family;
198 unsigned char dst_prefixlen;
202 union in_addr_union in_addr;
203 union in_addr_union dst_addr;
205 LIST_FIELDS(Route, routes);
208 typedef enum LinkState {
209 LINK_STATE_INITIALIZING,
210 LINK_STATE_ENSLAVING,
211 LINK_STATE_SETTING_ADDRESSES,
212 LINK_STATE_SETTING_ROUTES,
213 LINK_STATE_CONFIGURED,
214 LINK_STATE_UNMANAGED,
218 _LINK_STATE_INVALID = -1
221 typedef enum LinkOperationalState {
222 LINK_OPERSTATE_UNKNOWN,
223 LINK_OPERSTATE_DORMANT,
224 LINK_OPERSTATE_CARRIER,
225 LINK_OPERSTATE_DEGRADED,
226 LINK_OPERSTATE_ROUTABLE,
228 _LINK_OPERSTATE_INVALID = -1
229 } LinkOperationalState;
239 struct ether_addr mac;
240 struct udev_device *udev_device;
243 uint8_t kernel_operstate;
248 LinkOperationalState operstate;
250 unsigned addr_messages;
251 unsigned route_messages;
254 LIST_HEAD(Address, addresses);
256 sd_dhcp_client *dhcp_client;
257 sd_dhcp_lease *dhcp_lease;
259 uint16_t original_mtu;
262 sd_dhcp_server *dhcp_server;
270 struct udev_monitor *udev_monitor;
271 sd_event_source *udev_event_source;
272 sd_event_source *sigterm_event_source;
273 sd_event_source *sigint_event_source;
279 LIST_HEAD(Network, networks);
281 usec_t network_dirs_ts_usec;
284 extern const char* const network_dirs[];
288 int manager_new(Manager **ret);
289 void manager_free(Manager *m);
291 int manager_load_config(Manager *m);
292 bool manager_should_reload(Manager *m);
294 int manager_rtnl_enumerate_links(Manager *m);
296 int manager_rtnl_listen(Manager *m);
297 int manager_udev_listen(Manager *m);
298 int manager_bus_listen(Manager *m);
300 int manager_save(Manager *m);
302 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
303 #define _cleanup_manager_free_ _cleanup_(manager_freep)
307 int netdev_load(Manager *manager);
308 void netdev_drop(NetDev *netdev);
310 NetDev *netdev_unref(NetDev *netdev);
311 NetDev *netdev_ref(NetDev *netdev);
313 DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
314 #define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)
316 int netdev_get(Manager *manager, const char *name, NetDev **ret);
317 int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *newlink);
318 int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb);
319 int netdev_create_tunnel(Link *link, sd_rtnl_message_handler_t callback);
320 int netdev_create_veth(NetDev *netdev, sd_rtnl_message_handler_t callback);
321 int netdev_create_vxlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
323 const char *netdev_kind_to_string(NetDevKind d) _const_;
324 NetDevKind netdev_kind_from_string(const char *d) _pure_;
326 const char *macvlan_mode_to_string(MacVlanMode d) _const_;
327 MacVlanMode macvlan_mode_from_string(const char *d) _pure_;
329 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);
331 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);
334 const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, unsigned length);
338 int network_load(Manager *manager);
340 void network_free(Network *network);
342 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
343 #define _cleanup_network_free_ _cleanup_(network_freep)
345 int network_get(Manager *manager, struct udev_device *device,
346 const char *ifname, const struct ether_addr *mac,
348 int network_apply(Manager *manager, Network *network, Link *link);
350 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
351 const char *section, unsigned section_line, const char *lvalue,
352 int ltype, const char *rvalue, void *data, void *userdata);
354 int config_parse_tunnel(const char *unit,
355 const char *filename,
358 unsigned section_line,
365 int config_parse_tunnel_address(const char *unit,
366 const char *filename,
369 unsigned section_line,
377 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
380 int route_new_static(Network *network, unsigned section, Route **ret);
381 int route_new_dynamic(Route **ret);
382 void route_free(Route *route);
383 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
384 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
387 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
388 #define _cleanup_route_free_ _cleanup_(route_freep)
390 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
391 const char *section, unsigned section_line, const char *lvalue,
392 int ltype, const char *rvalue, void *data, void *userdata);
394 int config_parse_destination(const char *unit, const char *filename, unsigned line,
395 const char *section, unsigned section_line, const char *lvalue,
396 int ltype, const char *rvalue, void *data, void *userdata);
399 int address_new_static(Network *network, unsigned section, Address **ret);
400 int address_new_dynamic(Address **ret);
401 void address_free(Address *address);
402 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
403 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
404 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
405 bool address_equal(Address *a1, Address *a2);
407 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
408 #define _cleanup_address_free_ _cleanup_(address_freep)
410 int config_parse_dns(const char *unit, const char *filename, unsigned line,
411 const char *section, unsigned section_line, const char *lvalue,
412 int ltype, const char *rvalue, void *data, void *userdata);
414 int config_parse_address(const char *unit, const char *filename, unsigned line,
415 const char *section, unsigned section_line, const char *lvalue,
416 int ltype, const char *rvalue, void *data, void *userdata);
418 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
419 const char *section, unsigned section_line, const char *lvalue,
420 int ltype, const char *rvalue, void *data, void *userdata);
422 int config_parse_label(const char *unit, const char *filename, unsigned line,
423 const char *section, unsigned section_line, const char *lvalue,
424 int ltype, const char *rvalue, void *data, void *userdata);
428 Link *link_unref(Link *link);
429 Link *link_ref(Link *link);
430 int link_get(Manager *m, int ifindex, Link **ret);
431 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
432 void link_drop(Link *link);
434 int link_update(Link *link, sd_rtnl_message *message);
435 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
437 int link_initialized(Link *link, struct udev_device *device);
439 int link_save(Link *link);
441 bool link_has_carrier(unsigned flags, uint8_t operstate);
443 const char* link_state_to_string(LinkState s) _const_;
444 LinkState link_state_from_string(const char *s) _pure_;
446 const char* link_operstate_to_string(LinkOperationalState s) _const_;
447 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
449 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
450 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
452 /* Macros which append INTERFACE= to the message */
454 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
455 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
456 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
457 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
458 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
459 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
461 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
463 /* More macros which append INTERFACE= to the message */
465 #define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->ifname, "%-*s: " fmt, IFNAMSIZ, netdev->ifname, ##__VA_ARGS__)
466 #define log_debug_netdev(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__)
467 #define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__)
468 #define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__)
469 #define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__)
470 #define log_error_netdev(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__)
472 #define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__)
474 #define NETDEV(netdev) "INTERFACE=%s", netdev->ifname
475 #define ADDRESS_FMT_VAL(address) \
476 (address).s_addr & 0xFF, \
477 ((address).s_addr >> 8) & 0xFF, \
478 ((address).s_addr >> 16) & 0xFF, \
479 (address).s_addr >> 24