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 {
85 _NETDEV_KIND_INVALID = -1
88 typedef enum NetDevState {
90 NETDEV_STATE_CREATING,
94 _NETDEV_STATE_INVALID = -1,
104 Condition *match_host;
105 Condition *match_virt;
106 Condition *match_kernel;
107 Condition *match_arch;
113 struct ether_addr *mac;
114 struct ether_addr *mac_peer;
119 int32_t macvlan_mode;
124 bool tunnel_pmtudisc;
128 struct in_addr local;
129 struct in_addr remote;
130 struct in_addr group;
132 LIST_HEAD(netdev_enslave_callback, callbacks);
135 typedef enum DHCPSupport {
141 _DHCP_SUPPORT_INVALID = -1,
149 struct ether_addr *match_mac;
154 Condition *match_host;
155 Condition *match_virt;
156 Condition *match_kernel;
157 Condition *match_arch;
171 bool dhcp_domainname;
178 LIST_HEAD(Address, static_addresses);
179 LIST_HEAD(Route, static_routes);
181 Hashmap *addresses_by_section;
182 Hashmap *routes_by_section;
184 LIST_HEAD(Address, dns);
185 LIST_HEAD(Address, ntp);
187 LIST_FIELDS(Network, networks);
194 unsigned char family;
195 unsigned char prefixlen;
199 struct in_addr broadcast;
200 struct ifa_cacheinfo cinfo;
202 union in_addr_union in_addr;
204 LIST_FIELDS(Address, addresses);
211 unsigned char family;
212 unsigned char dst_prefixlen;
216 union in_addr_union in_addr;
217 union in_addr_union dst_addr;
219 LIST_FIELDS(Route, routes);
222 typedef enum LinkState {
223 LINK_STATE_INITIALIZING,
224 LINK_STATE_ENSLAVING,
225 LINK_STATE_SETTING_ADDRESSES,
226 LINK_STATE_SETTING_ROUTES,
227 LINK_STATE_CONFIGURED,
228 LINK_STATE_UNMANAGED,
232 _LINK_STATE_INVALID = -1
235 typedef enum LinkOperationalState {
236 LINK_OPERSTATE_UNKNOWN,
237 LINK_OPERSTATE_DORMANT,
238 LINK_OPERSTATE_CARRIER,
239 LINK_OPERSTATE_DEGRADED,
240 LINK_OPERSTATE_ROUTABLE,
242 _LINK_OPERSTATE_INVALID = -1
243 } LinkOperationalState;
253 struct ether_addr mac;
254 struct udev_device *udev_device;
257 uint8_t kernel_operstate;
262 LinkOperationalState operstate;
264 unsigned addr_messages;
265 unsigned route_messages;
268 LIST_HEAD(Address, addresses);
270 sd_dhcp_client *dhcp_client;
271 sd_dhcp_lease *dhcp_lease;
273 uint16_t original_mtu;
276 LIST_HEAD(Address, pool_addresses);
278 sd_dhcp_server *dhcp_server;
280 sd_icmp6_nd *icmp6_router_discovery;
281 sd_dhcp6_client *dhcp6_client;
290 union in_addr_union in_addr;
292 LIST_FIELDS(AddressPool, address_pools);
300 struct udev_monitor *udev_monitor;
301 sd_event_source *udev_event_source;
302 sd_event_source *sigterm_event_source;
303 sd_event_source *sigint_event_source;
309 LIST_HEAD(Network, networks);
310 LIST_HEAD(AddressPool, address_pools);
312 usec_t network_dirs_ts_usec;
315 extern const char* const network_dirs[];
319 int manager_new(Manager **ret);
320 void manager_free(Manager *m);
322 int manager_load_config(Manager *m);
323 bool manager_should_reload(Manager *m);
325 int manager_rtnl_enumerate_links(Manager *m);
327 int manager_rtnl_listen(Manager *m);
328 int manager_udev_listen(Manager *m);
329 int manager_bus_listen(Manager *m);
331 int manager_save(Manager *m);
333 int manager_address_pool_acquire(Manager *m, unsigned family, unsigned prefixlen, union in_addr_union *found);
335 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
336 #define _cleanup_manager_free_ _cleanup_(manager_freep)
340 int netdev_load(Manager *manager);
341 void netdev_drop(NetDev *netdev);
343 NetDev *netdev_unref(NetDev *netdev);
344 NetDev *netdev_ref(NetDev *netdev);
346 DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
347 #define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)
349 int netdev_get(Manager *manager, const char *name, NetDev **ret);
350 int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *newlink);
351 int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb);
352 int netdev_create_tunnel(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
353 int netdev_create_veth(NetDev *netdev, sd_rtnl_message_handler_t callback);
354 int netdev_create_vxlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
356 const char *netdev_kind_to_string(NetDevKind d) _const_;
357 NetDevKind netdev_kind_from_string(const char *d) _pure_;
359 const char *macvlan_mode_to_string(MacVlanMode d) _const_;
360 MacVlanMode macvlan_mode_from_string(const char *d) _pure_;
362 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);
364 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);
367 const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, unsigned length);
371 int network_load(Manager *manager);
373 void network_free(Network *network);
375 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
376 #define _cleanup_network_free_ _cleanup_(network_freep)
378 int network_get(Manager *manager, struct udev_device *device,
379 const char *ifname, const struct ether_addr *mac,
381 int network_apply(Manager *manager, Network *network, Link *link);
383 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
384 const char *section, unsigned section_line, const char *lvalue,
385 int ltype, const char *rvalue, void *data, void *userdata);
387 int config_parse_tunnel(const char *unit,
388 const char *filename,
391 unsigned section_line,
398 int config_parse_tunnel_address(const char *unit,
399 const char *filename,
402 unsigned section_line,
410 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
413 int route_new_static(Network *network, unsigned section, Route **ret);
414 int route_new_dynamic(Route **ret);
415 void route_free(Route *route);
416 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
417 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
420 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
421 #define _cleanup_route_free_ _cleanup_(route_freep)
423 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
424 const char *section, unsigned section_line, const char *lvalue,
425 int ltype, const char *rvalue, void *data, void *userdata);
427 int config_parse_destination(const char *unit, const char *filename, unsigned line,
428 const char *section, unsigned section_line, const char *lvalue,
429 int ltype, const char *rvalue, void *data, void *userdata);
432 int address_new_static(Network *network, unsigned section, Address **ret);
433 int address_new_dynamic(Address **ret);
434 void address_free(Address *address);
435 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
436 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
437 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
438 bool address_equal(Address *a1, Address *a2);
440 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
441 #define _cleanup_address_free_ _cleanup_(address_freep)
443 int config_parse_dns(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);
447 int config_parse_address(const char *unit, const char *filename, unsigned line,
448 const char *section, unsigned section_line, const char *lvalue,
449 int ltype, const char *rvalue, void *data, void *userdata);
451 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
452 const char *section, unsigned section_line, const char *lvalue,
453 int ltype, const char *rvalue, void *data, void *userdata);
455 int config_parse_label(const char *unit, const char *filename, unsigned line,
456 const char *section, unsigned section_line, const char *lvalue,
457 int ltype, const char *rvalue, void *data, void *userdata);
461 Link *link_unref(Link *link);
462 Link *link_ref(Link *link);
463 int link_get(Manager *m, int ifindex, Link **ret);
464 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
465 void link_drop(Link *link);
467 int link_update(Link *link, sd_rtnl_message *message);
468 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
470 int link_initialized(Link *link, struct udev_device *device);
472 int link_save(Link *link);
474 bool link_has_carrier(unsigned flags, uint8_t operstate);
476 const char* link_state_to_string(LinkState s) _const_;
477 LinkState link_state_from_string(const char *s) _pure_;
479 const char* link_operstate_to_string(LinkOperationalState s) _const_;
480 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
482 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
483 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
487 const char* dhcp_support_to_string(DHCPSupport i) _const_;
488 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
490 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
491 const char *section, unsigned section_line, const char *lvalue,
492 int ltype, const char *rvalue, void *data, void *userdata);
496 int address_pool_new(Manager *m, AddressPool **ret, unsigned family, const union in_addr_union *u, unsigned prefixlen);
497 int address_pool_new_from_string(Manager *m, AddressPool **ret, unsigned family, const char *p, unsigned prefixlen);
498 void address_pool_free(AddressPool *p);
500 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
502 /* Macros which append INTERFACE= to the message */
504 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
505 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
506 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
507 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
508 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
509 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
511 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
513 /* More macros which append INTERFACE= to the message */
515 #define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->ifname, "%-*s: " fmt, IFNAMSIZ, netdev->ifname, ##__VA_ARGS__)
516 #define log_debug_netdev(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__)
517 #define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__)
518 #define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__)
519 #define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__)
520 #define log_error_netdev(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__)
522 #define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__)
524 #define NETDEV(netdev) "INTERFACE=%s", netdev->ifname
525 #define ADDRESS_FMT_VAL(address) \
526 (address).s_addr & 0xFF, \
527 ((address).s_addr >> 8) & 0xFF, \
528 ((address).s_addr >> 16) & 0xFF, \
529 (address).s_addr >> 24