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 "in-addr-util.h"
43 #define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU
44 #define VXLAN_VID_MAX (1u << 24) - 1
45 #define DHCP_ROUTE_METRIC 1024
46 #define IPV4LL_ROUTE_METRIC 2048
48 typedef struct NetDev NetDev;
49 typedef struct Network Network;
50 typedef struct Link Link;
51 typedef struct Address Address;
52 typedef struct Route Route;
53 typedef struct Manager Manager;
54 typedef struct AddressPool AddressPool;
56 typedef struct netdev_join_callback netdev_join_callback;
58 struct netdev_join_callback {
59 sd_rtnl_message_handler_t callback;
62 LIST_FIELDS(netdev_join_callback, callbacks);
65 typedef enum MacVlanMode {
66 NETDEV_MACVLAN_MODE_PRIVATE = MACVLAN_MODE_PRIVATE,
67 NETDEV_MACVLAN_MODE_VEPA = MACVLAN_MODE_VEPA,
68 NETDEV_MACVLAN_MODE_BRIDGE = MACVLAN_MODE_BRIDGE,
69 NETDEV_MACVLAN_MODE_PASSTHRU = MACVLAN_MODE_PASSTHRU,
70 _NETDEV_MACVLAN_MODE_MAX,
71 _NETDEV_MACVLAN_MODE_INVALID = -1
74 typedef enum BondMode {
75 NETDEV_BOND_MODE_BALANCE_RR,
76 NETDEV_BOND_MODE_ACTIVE_BACKUP,
77 NETDEV_BOND_MODE_BALANCE_XOR,
78 NETDEV_BOND_MODE_BROADCAST,
79 NETDEV_BOND_MODE_802_3AD,
80 NETDEV_BOND_MODE_BALANCE_TLB,
81 NETDEV_BOND_MODE_BALANCE_ALB,
82 _NETDEV_BOND_MODE_MAX,
83 _NETDEV_BOND_MODE_INVALID = -1
86 typedef enum NetDevKind {
101 _NETDEV_KIND_INVALID = -1
104 typedef enum NetDevState {
106 NETDEV_STATE_CREATING,
110 _NETDEV_STATE_INVALID = -1,
120 Condition *match_host;
121 Condition *match_virt;
122 Condition *match_kernel;
123 Condition *match_arch;
131 struct ether_addr *mac;
132 struct ether_addr *mac_peer;
137 int32_t macvlan_mode;
143 bool tunnel_pmtudisc;
151 unsigned char family;
152 union in_addr_union local;
153 union in_addr_union remote;
154 union in_addr_union group;
156 LIST_HEAD(netdev_join_callback, callbacks);
159 typedef enum DHCPSupport {
165 _DHCP_SUPPORT_INVALID = -1,
173 struct ether_addr *match_mac;
178 char *dhcp_vendor_class_identifier;
180 Condition *match_host;
181 Condition *match_virt;
182 Condition *match_kernel;
183 Condition *match_arch;
197 bool dhcp_domainname;
205 LIST_HEAD(Address, static_addresses);
206 LIST_HEAD(Route, static_routes);
208 Hashmap *addresses_by_section;
209 Hashmap *routes_by_section;
211 LIST_HEAD(Address, dns);
212 LIST_HEAD(Address, ntp);
214 LIST_FIELDS(Network, networks);
221 unsigned char family;
222 unsigned char prefixlen;
226 struct in_addr broadcast;
227 struct ifa_cacheinfo cinfo;
229 union in_addr_union in_addr;
230 union in_addr_union in_addr_peer;
232 LIST_FIELDS(Address, addresses);
239 unsigned char family;
240 unsigned char dst_prefixlen;
244 union in_addr_union in_addr;
245 union in_addr_union dst_addr;
247 LIST_FIELDS(Route, routes);
250 typedef enum LinkState {
251 LINK_STATE_INITIALIZING,
252 LINK_STATE_ENSLAVING,
253 LINK_STATE_SETTING_ADDRESSES,
254 LINK_STATE_SETTING_ROUTES,
255 LINK_STATE_CONFIGURED,
256 LINK_STATE_UNMANAGED,
260 _LINK_STATE_INVALID = -1
263 typedef enum LinkOperationalState {
264 LINK_OPERSTATE_UNKNOWN,
265 LINK_OPERSTATE_DORMANT,
266 LINK_OPERSTATE_CARRIER,
267 LINK_OPERSTATE_DEGRADED,
268 LINK_OPERSTATE_ROUTABLE,
270 _LINK_OPERSTATE_INVALID = -1
271 } LinkOperationalState;
281 struct ether_addr mac;
282 struct udev_device *udev_device;
285 uint8_t kernel_operstate;
290 LinkOperationalState operstate;
292 unsigned addr_messages;
293 unsigned route_messages;
296 LIST_HEAD(Address, addresses);
298 sd_dhcp_client *dhcp_client;
299 sd_dhcp_lease *dhcp_lease;
301 uint16_t original_mtu;
304 LIST_HEAD(Address, pool_addresses);
306 sd_dhcp_server *dhcp_server;
308 sd_icmp6_nd *icmp6_router_discovery;
309 sd_dhcp6_client *dhcp6_client;
318 union in_addr_union in_addr;
320 LIST_FIELDS(AddressPool, address_pools);
328 struct udev_monitor *udev_monitor;
329 sd_event_source *udev_event_source;
330 sd_event_source *sigterm_event_source;
331 sd_event_source *sigint_event_source;
337 LIST_HEAD(Network, networks);
338 LIST_HEAD(AddressPool, address_pools);
340 usec_t network_dirs_ts_usec;
343 extern const char* const network_dirs[];
347 int manager_new(Manager **ret);
348 void manager_free(Manager *m);
350 int manager_load_config(Manager *m);
351 bool manager_should_reload(Manager *m);
353 int manager_rtnl_enumerate_links(Manager *m);
355 int manager_rtnl_listen(Manager *m);
356 int manager_udev_listen(Manager *m);
357 int manager_bus_listen(Manager *m);
359 int manager_save(Manager *m);
361 int manager_address_pool_acquire(Manager *m, unsigned family, unsigned prefixlen, union in_addr_union *found);
363 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
364 #define _cleanup_manager_free_ _cleanup_(manager_freep)
368 #define VLANID_MAX 4094
370 int netdev_load(Manager *manager);
371 void netdev_drop(NetDev *netdev);
373 NetDev *netdev_unref(NetDev *netdev);
374 NetDev *netdev_ref(NetDev *netdev);
376 DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
377 #define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)
379 int netdev_get(Manager *manager, const char *name, NetDev **ret);
380 int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *newlink);
381 int netdev_join(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb);
382 int netdev_create_tunnel(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
383 int netdev_create_veth(NetDev *netdev, sd_rtnl_message_handler_t callback);
384 int netdev_create_vxlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
385 int netdev_create_vlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
386 int netdev_create_macvlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
387 int netdev_create_dummy(NetDev *netdev, sd_rtnl_message_handler_t callback);
388 int netdev_create_tuntap(NetDev *netdev);
389 int netdev_create_bond(NetDev *netdev, sd_rtnl_message_handler_t callback);
390 int netdev_create_bridge(NetDev *netdev, sd_rtnl_message_handler_t callback);
393 const char *netdev_kind_to_string(NetDevKind d) _const_;
394 NetDevKind netdev_kind_from_string(const char *d) _pure_;
396 const char *macvlan_mode_to_string(MacVlanMode d) _const_;
397 MacVlanMode macvlan_mode_from_string(const char *d) _pure_;
399 const char *bond_mode_to_string(BondMode d) _const_;
400 BondMode bond_mode_from_string(const char *d) _pure_;
402 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);
404 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);
406 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);
409 const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, unsigned length);
413 int network_load(Manager *manager);
415 void network_free(Network *network);
417 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
418 #define _cleanup_network_free_ _cleanup_(network_freep)
420 int network_get(Manager *manager, struct udev_device *device,
421 const char *ifname, const struct ether_addr *mac,
423 int network_apply(Manager *manager, Network *network, Link *link);
425 int config_parse_netdev(const char *unit, const char *filename, unsigned line,
426 const char *section, unsigned section_line, const char *lvalue,
427 int ltype, const char *rvalue, void *data, void *userdata);
429 int config_parse_tunnel(const char *unit,
430 const char *filename,
433 unsigned section_line,
440 int config_parse_tunnel_address(const char *unit,
441 const char *filename,
444 unsigned section_line,
452 const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
455 int route_new_static(Network *network, unsigned section, Route **ret);
456 int route_new_dynamic(Route **ret);
457 void route_free(Route *route);
458 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
459 int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
462 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
463 #define _cleanup_route_free_ _cleanup_(route_freep)
465 int config_parse_gateway(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_destination(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_route_priority(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);
477 int address_new_static(Network *network, unsigned section, Address **ret);
478 int address_new_dynamic(Address **ret);
479 void address_free(Address *address);
480 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
481 int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
482 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
483 bool address_equal(Address *a1, Address *a2);
485 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
486 #define _cleanup_address_free_ _cleanup_(address_freep)
488 int config_parse_dns(const char *unit, const char *filename, unsigned line,
489 const char *section, unsigned section_line, const char *lvalue,
490 int ltype, const char *rvalue, void *data, void *userdata);
492 int config_parse_address(const char *unit, const char *filename, unsigned line,
493 const char *section, unsigned section_line, const char *lvalue,
494 int ltype, const char *rvalue, void *data, void *userdata);
496 int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
497 const char *section, unsigned section_line, const char *lvalue,
498 int ltype, const char *rvalue, void *data, void *userdata);
500 int config_parse_label(const char *unit, const char *filename, unsigned line,
501 const char *section, unsigned section_line, const char *lvalue,
502 int ltype, const char *rvalue, void *data, void *userdata);
506 Link *link_unref(Link *link);
507 Link *link_ref(Link *link);
508 int link_get(Manager *m, int ifindex, Link **ret);
509 int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
510 void link_drop(Link *link);
512 int link_update(Link *link, sd_rtnl_message *message);
513 int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);
515 int link_initialized(Link *link, struct udev_device *device);
517 int link_save(Link *link);
519 bool link_has_carrier(unsigned flags, uint8_t operstate);
521 const char* link_state_to_string(LinkState s) _const_;
522 LinkState link_state_from_string(const char *s) _pure_;
524 const char* link_operstate_to_string(LinkOperationalState s) _const_;
525 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
527 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
528 #define _cleanup_link_unref_ _cleanup_(link_unrefp)
532 const char* dhcp_support_to_string(DHCPSupport i) _const_;
533 DHCPSupport dhcp_support_from_string(const char *s) _pure_;
535 int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
536 const char *section, unsigned section_line, const char *lvalue,
537 int ltype, const char *rvalue, void *data, void *userdata);
541 int address_pool_new(Manager *m, AddressPool **ret, unsigned family, const union in_addr_union *u, unsigned prefixlen);
542 int address_pool_new_from_string(Manager *m, AddressPool **ret, unsigned family, const char *p, unsigned prefixlen);
543 void address_pool_free(AddressPool *p);
545 int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
547 /* Macros which append INTERFACE= to the message */
549 #define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%-*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
550 #define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
551 #define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
552 #define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
553 #define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
554 #define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
556 #define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
558 /* More macros which append INTERFACE= to the message */
560 #define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->ifname, "%-*s: " fmt, IFNAMSIZ, netdev->ifname, ##__VA_ARGS__)
561 #define log_debug_netdev(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__)
562 #define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__)
563 #define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__)
564 #define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__)
565 #define log_error_netdev(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__)
567 #define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__)
569 #define NETDEV(netdev) "INTERFACE=%s", netdev->ifname
570 #define ADDRESS_FMT_VAL(address) \
571 (address).s_addr & 0xFF, \
572 ((address).s_addr >> 8) & 0xFF, \
573 ((address).s_addr >> 16) & 0xFF, \
574 (address).s_addr >> 24