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 BondMode {
74 NETDEV_BOND_MODE_BALANCE_RR,
75 NETDEV_BOND_MODE_ACTIVE_BACKUP,
76 NETDEV_BOND_MODE_BALANCE_XOR,
77 NETDEV_BOND_MODE_BROADCAST,
78 NETDEV_BOND_MODE_802_3AD,
79 NETDEV_BOND_MODE_BALANCE_TLB,
80 NETDEV_BOND_MODE_BALANCE_ALB,
81 _NETDEV_BOND_MODE_MAX,
82 _NETDEV_BOND_MODE_INVALID = -1
85 typedef enum NetDevKind {
100 _NETDEV_KIND_INVALID = -1
103 typedef enum NetDevState {
105 NETDEV_STATE_CREATING,
109 _NETDEV_STATE_INVALID = -1,
119 Condition *match_host;
120 Condition *match_virt;
121 Condition *match_kernel;
122 Condition *match_arch;
130 struct ether_addr *mac;
131 struct ether_addr *mac_peer;
136 int32_t macvlan_mode;
142 bool tunnel_pmtudisc;
150 unsigned char family;
151 union in_addr_union local;
152 union in_addr_union remote;
153 union in_addr_union group;
155 LIST_HEAD(netdev_enslave_callback, callbacks);
158 typedef enum DHCPSupport {
164 _DHCP_SUPPORT_INVALID = -1,
172 struct ether_addr *match_mac;
177 Condition *match_host;
178 Condition *match_virt;
179 Condition *match_kernel;
180 Condition *match_arch;
194 bool dhcp_domainname;
202 LIST_HEAD(Address, static_addresses);
203 LIST_HEAD(Route, static_routes);
205 Hashmap *addresses_by_section;
206 Hashmap *routes_by_section;
208 LIST_HEAD(Address, dns);
209 LIST_HEAD(Address, ntp);
211 LIST_FIELDS(Network, networks);
218 unsigned char family;
219 unsigned char prefixlen;
223 struct in_addr broadcast;
224 struct ifa_cacheinfo cinfo;
226 union in_addr_union in_addr;
227 union in_addr_union in_addr_peer;
229 LIST_FIELDS(Address, addresses);
236 unsigned char family;
237 unsigned char dst_prefixlen;
241 union in_addr_union in_addr;
242 union in_addr_union dst_addr;
244 LIST_FIELDS(Route, routes);
247 typedef enum LinkState {
248 LINK_STATE_INITIALIZING,
249 LINK_STATE_ENSLAVING,
250 LINK_STATE_SETTING_ADDRESSES,
251 LINK_STATE_SETTING_ROUTES,
252 LINK_STATE_CONFIGURED,
253 LINK_STATE_UNMANAGED,
257 _LINK_STATE_INVALID = -1
260 typedef enum LinkOperationalState {
261 LINK_OPERSTATE_UNKNOWN,
262 LINK_OPERSTATE_DORMANT,
263 LINK_OPERSTATE_CARRIER,
264 LINK_OPERSTATE_DEGRADED,
265 LINK_OPERSTATE_ROUTABLE,
267 _LINK_OPERSTATE_INVALID = -1
268 } LinkOperationalState;
278 struct ether_addr mac;
279 struct udev_device *udev_device;
282 uint8_t kernel_operstate;
287 LinkOperationalState operstate;
289 unsigned addr_messages;
290 unsigned route_messages;
293 LIST_HEAD(Address, addresses);
295 sd_dhcp_client *dhcp_client;
296 sd_dhcp_lease *dhcp_lease;
298 uint16_t original_mtu;
301 LIST_HEAD(Address, pool_addresses);
303 sd_dhcp_server *dhcp_server;
305 sd_icmp6_nd *icmp6_router_discovery;
306 sd_dhcp6_client *dhcp6_client;
315 union in_addr_union in_addr;
317 LIST_FIELDS(AddressPool, address_pools);
325 struct udev_monitor *udev_monitor;
326 sd_event_source *udev_event_source;
327 sd_event_source *sigterm_event_source;
328 sd_event_source *sigint_event_source;
334 LIST_HEAD(Network, networks);
335 LIST_HEAD(AddressPool, address_pools);
337 usec_t network_dirs_ts_usec;
340 extern const char* const network_dirs[];
344 int manager_new(Manager **ret);
345 void manager_free(Manager *m);
347 int manager_load_config(Manager *m);
348 bool manager_should_reload(Manager *m);
350 int manager_rtnl_enumerate_links(Manager *m);
352 int manager_rtnl_listen(Manager *m);
353 int manager_udev_listen(Manager *m);
354 int manager_bus_listen(Manager *m);
356 int manager_save(Manager *m);
358 int manager_address_pool_acquire(Manager *m, unsigned family, unsigned prefixlen, union in_addr_union *found);
360 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
361 #define _cleanup_manager_free_ _cleanup_(manager_freep)
365 #define VLANID_MAX 4094
367 int netdev_load(Manager *manager);
368 void netdev_drop(NetDev *netdev);
370 NetDev *netdev_unref(NetDev *netdev);
371 NetDev *netdev_ref(NetDev *netdev);
373 DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
374 #define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)
376 int netdev_get(Manager *manager, const char *name, NetDev **ret);
377 int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *newlink);
378 int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb);
379 int netdev_create_tunnel(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
380 int netdev_create_veth(NetDev *netdev, sd_rtnl_message_handler_t callback);
381 int netdev_create_vxlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
382 int netdev_create_vlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
383 int netdev_create_macvlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
384 int netdev_create_dummy(NetDev *netdev, sd_rtnl_message_handler_t callback);
385 int netdev_create_tuntap(NetDev *netdev);
386 int netdev_create_bond(NetDev *netdev, sd_rtnl_message_handler_t callback);
389 const char *netdev_kind_to_string(NetDevKind d) _const_;
390 NetDevKind netdev_kind_from_string(const char *d) _pure_;
392 const char *macvlan_mode_to_string(MacVlanMode d) _const_;
393 MacVlanMode macvlan_mode_from_string(const char *d) _pure_;
395 const char *bond_mode_to_string(BondMode d) _const_;
396 BondMode bond_mode_from_string(const char *d) _pure_;
398 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);
400 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);
402 int config_parse_bond_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);
405 const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, unsigned length);
409 int network_load(Manager *manager);
411 void network_free(Network *network);
413 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
414 #define _cleanup_network_free_ _cleanup_(network_freep)
416 int network_get(Manager *manager, struct udev_device *device,
417 const char *ifname, const struct ether_addr *mac,
419 int network_apply(Manager *manager, Network *network, Link *link);
421 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
422 const char *section, unsigned section_line, const char *lvalue,
423 int ltype, const char *rvalue, void *data, void *userdata);
425 int config_parse_tunnel(const char *unit,
426 const char *filename,
429 unsigned section_line,
436 int config_parse_tunnel_address(const char *unit,
437 const char *filename,
440 unsigned section_line,
448 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
451 int route_new_static(Network *network, unsigned section, Route **ret);
452 int route_new_dynamic(Route **ret);
453 void route_free(Route *route);
454 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
455 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
458 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
459 #define _cleanup_route_free_ _cleanup_(route_freep)
461 int config_parse_gateway(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_destination(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);
470 int address_new_static(Network *network, unsigned section, Address **ret);
471 int address_new_dynamic(Address **ret);
472 void address_free(Address *address);
473 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
474 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
475 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
476 bool address_equal(Address *a1, Address *a2);
478 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
479 #define _cleanup_address_free_ _cleanup_(address_freep)
481 int config_parse_dns(const char *unit, const char *filename, unsigned line,
482 const char *section, unsigned section_line, const char *lvalue,
483 int ltype, const char *rvalue, void *data, void *userdata);
485 int config_parse_address(const char *unit, const char *filename, unsigned line,
486 const char *section, unsigned section_line, const char *lvalue,
487 int ltype, const char *rvalue, void *data, void *userdata);
489 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
490 const char *section, unsigned section_line, const char *lvalue,
491 int ltype, const char *rvalue, void *data, void *userdata);
493 int config_parse_label(const char *unit, const char *filename, unsigned line,
494 const char *section, unsigned section_line, const char *lvalue,
495 int ltype, const char *rvalue, void *data, void *userdata);
499 Link *link_unref(Link *link);
500 Link *link_ref(Link *link);
501 int link_get(Manager *m, int ifindex, Link **ret);
502 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
503 void link_drop(Link *link);
505 int link_update(Link *link, sd_rtnl_message *message);
506 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
508 int link_initialized(Link *link, struct udev_device *device);
510 int link_save(Link *link);
512 bool link_has_carrier(unsigned flags, uint8_t operstate);
514 const char* link_state_to_string(LinkState s) _const_;
515 LinkState link_state_from_string(const char *s) _pure_;
517 const char* link_operstate_to_string(LinkOperationalState s) _const_;
518 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
520 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
521 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
525 const char* dhcp_support_to_string(DHCPSupport i) _const_;
526 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
528 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
529 const char *section, unsigned section_line, const char *lvalue,
530 int ltype, const char *rvalue, void *data, void *userdata);
534 int address_pool_new(Manager *m, AddressPool **ret, unsigned family, const union in_addr_union *u, unsigned prefixlen);
535 int address_pool_new_from_string(Manager *m, AddressPool **ret, unsigned family, const char *p, unsigned prefixlen);
536 void address_pool_free(AddressPool *p);
538 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
540 /* Macros which append INTERFACE= to the message */
542 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
543 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
544 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
545 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
546 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
547 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
549 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
551 /* More macros which append INTERFACE= to the message */
553 #define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->ifname, "%-*s: " fmt, IFNAMSIZ, netdev->ifname, ##__VA_ARGS__)
554 #define log_debug_netdev(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__)
555 #define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__)
556 #define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__)
557 #define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__)
558 #define log_error_netdev(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__)
560 #define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__)
562 #define NETDEV(netdev) "INTERFACE=%s", netdev->ifname
563 #define ADDRESS_FMT_VAL(address) \
564 (address).s_addr & 0xFF, \
565 ((address).s_addr >> 8) & 0xFF, \
566 ((address).s_addr >> 16) & 0xFF, \
567 (address).s_addr >> 24