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"
37 #include "rtnl-util.h"
41 #include "condition.h"
42 #include "in-addr-util.h"
44 #define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU
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
;
55 typedef struct FdbEntry FdbEntry
;
57 typedef enum AddressFamilyBoolean
{
58 /* This is a bitmask, though it usually doesn't feel that way! */
59 ADDRESS_FAMILY_NO
= 0,
60 ADDRESS_FAMILY_IPV4
= 1,
61 ADDRESS_FAMILY_IPV6
= 2,
62 ADDRESS_FAMILY_YES
= 3,
63 _ADDRESS_FAMILY_BOOLEAN_MAX
,
64 _ADDRESS_FAMILY_BOOLEAN_INVALID
= -1,
65 } AddressFamilyBoolean
;
67 typedef enum LLMNRSupport
{
70 LLMNR_SUPPORT_RESOLVE
,
72 _LLMNR_SUPPORT_INVALID
= -1,
79 struct ether_addr
*mac_addr
;
82 LIST_FIELDS(FdbEntry
, static_fdb_entries
);
90 struct ether_addr
*match_mac
;
95 char *dhcp_vendor_class_identifier
;
97 Condition
*match_host
;
98 Condition
*match_virt
;
99 Condition
*match_kernel
;
100 Condition
*match_arch
;
105 Hashmap
*stacked_netdevs
;
106 AddressFamilyBoolean dhcp
;
116 unsigned dhcp_route_metric
;
124 AddressFamilyBoolean ip_forward
;
127 struct ether_addr
*mac
;
132 LIST_HEAD(Address
, static_addresses
);
133 LIST_HEAD(Route
, static_routes
);
134 LIST_HEAD(FdbEntry
, static_fdb_entries
);
136 Hashmap
*addresses_by_section
;
137 Hashmap
*routes_by_section
;
138 Hashmap
*fdb_entries_by_section
;
140 bool wildcard_domain
;
141 char **domains
, **dns
, **ntp
;
145 LIST_FIELDS(Network
, networks
);
153 unsigned char prefixlen
;
158 struct in_addr broadcast
;
159 struct ifa_cacheinfo cinfo
;
161 union in_addr_union in_addr
;
162 union in_addr_union in_addr_peer
;
164 bool ip_masquerade_done
;
166 LIST_FIELDS(Address
, addresses
);
174 unsigned char dst_prefixlen
;
175 unsigned char src_prefixlen
;
178 unsigned char protocol
; /* RTPROT_* */
180 union in_addr_union in_addr
;
181 union in_addr_union dst_addr
;
182 union in_addr_union src_addr
;
183 union in_addr_union prefsrc_addr
;
185 LIST_FIELDS(Route
, routes
);
194 union in_addr_union in_addr
;
196 LIST_FIELDS(AddressPool
, address_pools
);
202 sd_event_source
*bus_retry_event_source
;
204 sd_bus_slot
*prepare_for_sleep_slot
;
206 struct udev_monitor
*udev_monitor
;
207 sd_event_source
*udev_event_source
;
215 LIST_HEAD(Network
, networks
);
216 LIST_HEAD(AddressPool
, address_pools
);
218 usec_t network_dirs_ts_usec
;
221 extern const char* const network_dirs
[];
225 int manager_new(Manager
**ret
);
226 void manager_free(Manager
*m
);
228 int manager_load_config(Manager
*m
);
229 bool manager_should_reload(Manager
*m
);
231 int manager_rtnl_enumerate_links(Manager
*m
);
232 int manager_rtnl_enumerate_addresses(Manager
*m
);
234 int manager_save(Manager
*m
);
236 int manager_address_pool_acquire(Manager
*m
, int family
, unsigned prefixlen
, union in_addr_union
*found
);
238 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager
*, manager_free
);
239 #define _cleanup_manager_free_ _cleanup_(manager_freep)
243 int network_load(Manager
*manager
);
245 void network_free(Network
*network
);
247 DEFINE_TRIVIAL_CLEANUP_FUNC(Network
*, network_free
);
248 #define _cleanup_network_free_ _cleanup_(network_freep)
250 int network_get(Manager
*manager
, struct udev_device
*device
,
251 const char *ifname
, const struct ether_addr
*mac
,
253 int network_apply(Manager
*manager
, Network
*network
, Link
*link
);
255 int config_parse_netdev(const char *unit
, const char *filename
, unsigned line
,
256 const char *section
, unsigned section_line
, const char *lvalue
,
257 int ltype
, const char *rvalue
, void *data
, void *userdata
);
259 int config_parse_domains(const char *unit
,
260 const char *filename
,
263 unsigned section_line
,
270 int config_parse_tunnel(const char *unit
,
271 const char *filename
,
274 unsigned section_line
,
281 int config_parse_tunnel_address(const char *unit
,
282 const char *filename
,
285 unsigned section_line
,
292 int config_parse_vxlan_group_address(const char *unit
,
293 const char *filename
,
296 unsigned section_line
,
304 const struct ConfigPerfItem
* network_network_gperf_lookup(const char *key
, unsigned length
);
307 int route_new_static(Network
*network
, unsigned section
, Route
**ret
);
308 int route_new_dynamic(Route
**ret
, unsigned char rtm_protocol
);
309 void route_free(Route
*route
);
310 int route_configure(Route
*route
, Link
*link
, sd_rtnl_message_handler_t callback
);
311 int route_drop(Route
*route
, Link
*link
, sd_rtnl_message_handler_t callback
);
314 DEFINE_TRIVIAL_CLEANUP_FUNC(Route
*, route_free
);
315 #define _cleanup_route_free_ _cleanup_(route_freep)
317 int config_parse_gateway(const char *unit
, const char *filename
, unsigned line
,
318 const char *section
, unsigned section_line
, const char *lvalue
,
319 int ltype
, const char *rvalue
, void *data
, void *userdata
);
321 int config_parse_destination(const char *unit
, const char *filename
, unsigned line
,
322 const char *section
, unsigned section_line
, const char *lvalue
,
323 int ltype
, const char *rvalue
, void *data
, void *userdata
);
325 int config_parse_route_priority(const char *unit
, const char *filename
, unsigned line
,
326 const char *section
, unsigned section_line
, const char *lvalue
,
327 int ltype
, const char *rvalue
, void *data
, void *userdata
);
329 int address_new_static(Network
*network
, unsigned section
, Address
**ret
);
330 int address_new_dynamic(Address
**ret
);
331 void address_free(Address
*address
);
332 int address_configure(Address
*address
, Link
*link
, sd_rtnl_message_handler_t callback
);
333 int address_update(Address
*address
, Link
*link
, sd_rtnl_message_handler_t callback
);
334 int address_drop(Address
*address
, Link
*link
, sd_rtnl_message_handler_t callback
);
335 int address_establish(Address
*address
, Link
*link
);
336 int address_release(Address
*address
, Link
*link
);
337 bool address_equal(Address
*a1
, Address
*a2
);
339 DEFINE_TRIVIAL_CLEANUP_FUNC(Address
*, address_free
);
340 #define _cleanup_address_free_ _cleanup_(address_freep)
342 int config_parse_address(const char *unit
, const char *filename
, unsigned line
,
343 const char *section
, unsigned section_line
, const char *lvalue
,
344 int ltype
, const char *rvalue
, void *data
, void *userdata
);
346 int config_parse_broadcast(const char *unit
, const char *filename
, unsigned line
,
347 const char *section
, unsigned section_line
, const char *lvalue
,
348 int ltype
, const char *rvalue
, void *data
, void *userdata
);
350 int config_parse_label(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 /* Forwarding database table. */
355 int fdb_entry_configure(sd_rtnl
*const rtnl
, FdbEntry
*const fdb_entry
, const int ifindex
);
356 void fdb_entry_free(FdbEntry
*fdb_entry
);
357 int fdb_entry_new_static(Network
*const network
, const unsigned section
, FdbEntry
**ret
);
359 DEFINE_TRIVIAL_CLEANUP_FUNC(FdbEntry
*, fdb_entry_free
);
360 #define _cleanup_fdbentry_free_ _cleanup_(fdb_entry_freep)
362 int config_parse_fdb_hwaddr(const char *unit
, const char *filename
, unsigned line
,
363 const char *section
, unsigned section_line
, const char *lvalue
,
364 int ltype
, const char *rvalue
, void *data
, void *userdata
);
366 int config_parse_fdb_vlan_id(const char *unit
, const char *filename
, unsigned line
,
367 const char *section
, unsigned section_line
, const char *lvalue
,
368 int ltype
, const char *rvalue
, void *data
, void *userdata
);
372 int config_parse_dhcp(const char *unit
, const char *filename
, unsigned line
,
373 const char *section
, unsigned section_line
, const char *lvalue
,
374 int ltype
, const char *rvalue
, void *data
, void *userdata
);
378 const char* llmnr_support_to_string(LLMNRSupport i
) _const_
;
379 LLMNRSupport
llmnr_support_from_string(const char *s
) _pure_
;
381 int config_parse_llmnr(const char *unit
, const char *filename
, unsigned line
,
382 const char *section
, unsigned section_line
, const char *lvalue
,
383 int ltype
, const char *rvalue
, void *data
, void *userdata
);
387 int address_pool_new(Manager
*m
, AddressPool
**ret
, int family
, const union in_addr_union
*u
, unsigned prefixlen
);
388 int address_pool_new_from_string(Manager
*m
, AddressPool
**ret
, int family
, const char *p
, unsigned prefixlen
);
389 void address_pool_free(AddressPool
*p
);
391 int address_pool_acquire(AddressPool
*p
, unsigned prefixlen
, union in_addr_union
*found
);
393 const char *address_family_boolean_to_string(AddressFamilyBoolean b
) _const_
;
394 AddressFamilyBoolean
address_family_boolean_from_string(const char *s
) _const_
;
396 int config_parse_address_family_boolean(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
);