1 /* SPDX-License-Identifier: LGPL-2.1+ */
4 #include <netinet/in.h>
5 #include <linux/netdevice.h>
8 #include "alloc-util.h"
9 #include "conf-files.h"
10 #include "conf-parser.h"
11 #include "dns-domain.h"
13 #include "hostname-util.h"
14 #include "in-addr-util.h"
15 #include "networkd-dhcp-server.h"
16 #include "network-internal.h"
17 #include "networkd-manager.h"
18 #include "networkd-network.h"
19 #include "parse-util.h"
20 #include "path-lookup.h"
22 #include "socket-util.h"
23 #include "stat-util.h"
24 #include "string-table.h"
25 #include "string-util.h"
30 /* Let's assume that anything above this number is a user misconfiguration. */
31 #define MAX_NTP_SERVERS 128
33 /* Set defaults following RFC7844 */
34 void network_apply_anonymize_if_set(Network
*network
) {
35 if (!network
->dhcp_anonymize
)
38 SHOULD NOT send the Host Name option */
39 network
->dhcp_send_hostname
= false;
40 /* RFC7844 section 3.:
41 MAY contain the Client Identifier option
43 clients MUST use client identifiers based solely
44 on the link-layer address */
45 /* NOTE: Using MAC, as it does not reveal extra information,
46 * and some servers might not answer if this option is not sent */
47 network
->dhcp_client_identifier
= DHCP_CLIENT_ID_MAC
;
49 SHOULD NOT use the Vendor Class Identifier option */
50 network
->dhcp_vendor_class_identifier
= mfree(network
->dhcp_vendor_class_identifier
);
51 /* RFC7844 section 3.6.:
52 The client intending to protect its privacy SHOULD only request a
53 minimal number of options in the PRL and SHOULD also randomly shuffle
54 the ordering of option codes in the PRL. If this random ordering
55 cannot be implemented, the client MAY order the option codes in the
56 PRL by option code number (lowest to highest).
58 /* NOTE: dhcp_use_mtu is false by default,
59 * though it was not initiallized to any value in network_load_one.
60 * Maybe there should be another var called *send*?
61 * (to use the MTU sent by the server but to do not send
62 * the option in the PRL). */
63 network
->dhcp_use_mtu
= false;
64 /* NOTE: when Anonymize=yes, the PRL route options are sent by default,
65 * but this is needed to use them. */
66 network
->dhcp_use_routes
= true;
67 /* RFC7844 section 3.6.
68 * same comments as previous option */
69 network
->dhcp_use_timezone
= false;
72 static int network_resolve_netdev_one(Network
*network
, const char *name
, NetDevKind kind
, NetDev
**ret_netdev
) {
73 const char *kind_string
;
77 /* For test-networkd-conf, the check must be earlier than the assertions. */
82 assert(network
->manager
);
83 assert(network
->filename
);
86 if (kind
== _NETDEV_KIND_TUNNEL
)
87 kind_string
= "tunnel";
89 kind_string
= netdev_kind_to_string(kind
);
91 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
),
92 "%s: Invalid NetDev kind of %s, ignoring assignment.",
93 network
->filename
, name
);
96 r
= netdev_get(network
->manager
, name
, &netdev
);
98 return log_error_errno(r
, "%s: %s NetDev could not be found, ignoring assignment.",
99 network
->filename
, name
);
101 if (netdev
->kind
!= kind
&& !(kind
== _NETDEV_KIND_TUNNEL
&&
108 NETDEV_KIND_IP6GRETAP
,
112 NETDEV_KIND_ERSPAN
)))
113 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
),
114 "%s: NetDev %s is not a %s, ignoring assignment",
115 network
->filename
, name
, kind_string
);
117 *ret_netdev
= netdev_ref(netdev
);
121 static int network_resolve_stacked_netdevs(Network
*network
) {
128 HASHMAP_FOREACH_KEY(kind
, name
, network
->stacked_netdev_names
, i
) {
129 _cleanup_(netdev_unrefp
) NetDev
*netdev
= NULL
;
131 r
= network_resolve_netdev_one(network
, name
, PTR_TO_INT(kind
), &netdev
);
135 r
= hashmap_ensure_allocated(&network
->stacked_netdevs
, &string_hash_ops
);
139 r
= hashmap_put(network
->stacked_netdevs
, netdev
->ifname
, netdev
);
141 return log_error_errno(r
, "%s: Failed to add NetDev '%s' to network: %m",
142 network
->filename
, (const char *) name
);
150 int network_verify(Network
*network
) {
151 RoutePrefix
*route_prefix
, *route_prefix_next
;
152 RoutingPolicyRule
*rule
, *rule_next
;
153 Neighbor
*neighbor
, *neighbor_next
;
154 AddressLabel
*label
, *label_next
;
155 NextHop
*nexthop
, *nextnop_next
;
156 Address
*address
, *address_next
;
157 Prefix
*prefix
, *prefix_next
;
158 Route
*route
, *route_next
;
159 FdbEntry
*fdb
, *fdb_next
;
164 assert(network
->filename
);
166 if (set_isempty(network
->match_mac
) && set_isempty(network
->match_permanent_mac
) &&
167 strv_isempty(network
->match_path
) && strv_isempty(network
->match_driver
) &&
168 strv_isempty(network
->match_type
) && strv_isempty(network
->match_name
) &&
169 strv_isempty(network
->match_property
) && strv_isempty(network
->match_ssid
) && !network
->conditions
)
170 return log_warning_errno(SYNTHETIC_ERRNO(EINVAL
),
171 "%s: No valid settings found in the [Match] section, ignoring file. "
172 "To match all interfaces, add Name=* in the [Match] section.",
175 /* skip out early if configuration does not match the environment */
176 if (!condition_test_list(network
->conditions
, environ
, NULL
, NULL
, NULL
))
177 return log_debug_errno(SYNTHETIC_ERRNO(EINVAL
),
178 "%s: Conditions in the file do not match the system environment, skipping.",
181 (void) network_resolve_netdev_one(network
, network
->bond_name
, NETDEV_KIND_BOND
, &network
->bond
);
182 (void) network_resolve_netdev_one(network
, network
->bridge_name
, NETDEV_KIND_BRIDGE
, &network
->bridge
);
183 (void) network_resolve_netdev_one(network
, network
->vrf_name
, NETDEV_KIND_VRF
, &network
->vrf
);
184 (void) network_resolve_stacked_netdevs(network
);
186 /* Free unnecessary entries. */
187 network
->bond_name
= mfree(network
->bond_name
);
188 network
->bridge_name
= mfree(network
->bridge_name
);
189 network
->vrf_name
= mfree(network
->vrf_name
);
190 network
->stacked_netdev_names
= hashmap_free_free_key(network
->stacked_netdev_names
);
193 /* Bonding slave does not support addressing. */
194 if (network
->ipv6_accept_ra
> 0) {
195 log_warning("%s: Cannot enable IPv6AcceptRA= when Bond= is specified, disabling IPv6AcceptRA=.",
197 network
->ipv6_accept_ra
= 0;
199 if (network
->link_local
>= 0 && network
->link_local
!= ADDRESS_FAMILY_NO
) {
200 log_warning("%s: Cannot enable LinkLocalAddressing= when Bond= is specified, disabling LinkLocalAddressing=.",
202 network
->link_local
= ADDRESS_FAMILY_NO
;
204 if (network
->dhcp
!= ADDRESS_FAMILY_NO
) {
205 log_warning("%s: Cannot enable DHCP= when Bond= is specified, disabling DHCP=.",
207 network
->dhcp
= ADDRESS_FAMILY_NO
;
209 if (network
->dhcp_server
) {
210 log_warning("%s: Cannot enable DHCPServer= when Bond= is specified, disabling DHCPServer=.",
212 network
->dhcp_server
= false;
214 if (network
->n_static_addresses
> 0) {
215 log_warning("%s: Cannot set addresses when Bond= is specified, ignoring addresses.",
217 while ((address
= network
->static_addresses
))
218 address_free(address
);
220 if (network
->n_static_routes
> 0) {
221 log_warning("%s: Cannot set routes when Bond= is specified, ignoring routes.",
223 while ((route
= network
->static_routes
))
228 if (network
->link_local
< 0)
229 network
->link_local
= network
->bridge
? ADDRESS_FAMILY_NO
: ADDRESS_FAMILY_IPV6
;
231 if (!FLAGS_SET(network
->link_local
, ADDRESS_FAMILY_IPV6
)) {
232 if (network
->ipv6_accept_ra
> 0) {
233 log_warning("%s: IPv6AcceptRA= is enabled by the .network file but IPv6 link local addressing is disabled. "
234 "Disabling IPv6AcceptRA=.", network
->filename
);
235 network
->ipv6_accept_ra
= false;
238 if (FLAGS_SET(network
->dhcp
, ADDRESS_FAMILY_IPV6
)) {
239 log_warning("%s: DHCPv6 client is enabled by the .network file but IPv6 link local addressing is disabled. "
240 "Disabling DHCPv6 client.", network
->filename
);
241 SET_FLAG(network
->dhcp
, ADDRESS_FAMILY_IPV6
, false);
244 if (network
->router_prefix_delegation
!= RADV_PREFIX_DELEGATION_NONE
) {
245 log_warning("%s: IPv6PrefixDelegation= is enabled but IPv6 link local addressing is disabled. "
246 "Disabling IPv6PrefixDelegation=.", network
->filename
);
247 network
->router_prefix_delegation
= RADV_PREFIX_DELEGATION_NONE
;
251 if (FLAGS_SET(network
->link_local
, ADDRESS_FAMILY_FALLBACK_IPV4
) &&
252 !FLAGS_SET(network
->dhcp
, ADDRESS_FAMILY_IPV4
)) {
253 log_warning("%s: fallback assignment of IPv4 link local address is enabled but DHCPv4 is disabled. "
254 "Disabling the fallback assignment.", network
->filename
);
255 SET_FLAG(network
->link_local
, ADDRESS_FAMILY_FALLBACK_IPV4
, false);
258 if (network
->ipv6_accept_ra
< 0 && network
->bridge
)
259 network
->ipv6_accept_ra
= false;
261 /* IPMasquerade=yes implies IPForward=yes */
262 if (network
->ip_masquerade
)
263 network
->ip_forward
|= ADDRESS_FAMILY_IPV4
;
265 if (network
->mtu
> 0 && network
->dhcp_use_mtu
) {
266 log_warning("%s: MTUBytes= in [Link] section and UseMTU= in [DHCP] section are set. "
267 "Disabling UseMTU=.", network
->filename
);
268 network
->dhcp_use_mtu
= false;
271 if (network
->dhcp_use_gateway
< 0)
272 network
->dhcp_use_gateway
= network
->dhcp_use_routes
;
274 if (network
->ignore_carrier_loss
< 0)
275 network
->ignore_carrier_loss
= network
->configure_without_carrier
;
277 if (network
->dhcp_critical
>= 0) {
278 if (network
->keep_configuration
>= 0)
279 log_warning("%s: Both KeepConfiguration= and deprecated CriticalConnection= are set. "
280 "Ignoring CriticalConnection=.", network
->filename
);
281 else if (network
->dhcp_critical
)
282 /* CriticalConnection=yes also preserve foreign static configurations. */
283 network
->keep_configuration
= KEEP_CONFIGURATION_YES
;
285 network
->keep_configuration
= KEEP_CONFIGURATION_NO
;
288 if (network
->keep_configuration
< 0)
289 network
->keep_configuration
= KEEP_CONFIGURATION_NO
;
291 LIST_FOREACH_SAFE(addresses
, address
, address_next
, network
->static_addresses
)
292 if (address_section_verify(address
) < 0)
293 address_free(address
);
295 LIST_FOREACH_SAFE(routes
, route
, route_next
, network
->static_routes
)
296 if (route_section_verify(route
, network
) < 0)
299 LIST_FOREACH_SAFE(nexthops
, nexthop
, nextnop_next
, network
->static_nexthops
)
300 if (nexthop_section_verify(nexthop
) < 0)
301 nexthop_free(nexthop
);
303 LIST_FOREACH_SAFE(static_fdb_entries
, fdb
, fdb_next
, network
->static_fdb_entries
)
304 if (section_is_invalid(fdb
->section
))
307 LIST_FOREACH_SAFE(neighbors
, neighbor
, neighbor_next
, network
->neighbors
)
308 if (neighbor_section_verify(neighbor
) < 0)
309 neighbor_free(neighbor
);
311 LIST_FOREACH_SAFE(labels
, label
, label_next
, network
->address_labels
)
312 if (section_is_invalid(label
->section
))
313 address_label_free(label
);
315 LIST_FOREACH_SAFE(prefixes
, prefix
, prefix_next
, network
->static_prefixes
)
316 if (section_is_invalid(prefix
->section
))
319 LIST_FOREACH_SAFE(route_prefixes
, route_prefix
, route_prefix_next
, network
->static_route_prefixes
)
320 if (section_is_invalid(route_prefix
->section
))
321 route_prefix_free(route_prefix
);
323 LIST_FOREACH_SAFE(rules
, rule
, rule_next
, network
->rules
)
324 if (routing_policy_rule_section_verify(rule
) < 0)
325 routing_policy_rule_free(rule
);
327 bool has_root
= false, has_clsact
= false;
328 ORDERED_HASHMAP_FOREACH(tc
, network
->tc_by_section
, i
)
329 if (traffic_control_section_verify(tc
, &has_root
, &has_clsact
) < 0)
330 traffic_control_free(tc
);
335 int network_load_one(Manager
*manager
, OrderedHashmap
**networks
, const char *filename
) {
336 _cleanup_free_
char *fname
= NULL
, *name
= NULL
;
337 _cleanup_(network_unrefp
) Network
*network
= NULL
;
338 _cleanup_fclose_
FILE *file
= NULL
;
339 const char *dropin_dirname
;
346 file
= fopen(filename
, "re");
354 if (null_or_empty_fd(fileno(file
))) {
355 log_debug("Skipping empty file: %s", filename
);
359 fname
= strdup(filename
);
363 name
= strdup(basename(filename
));
367 d
= strrchr(name
, '.');
373 dropin_dirname
= strjoina(name
, ".network.d");
375 network
= new(Network
, 1);
379 *network
= (Network
) {
380 .filename
= TAKE_PTR(fname
),
381 .name
= TAKE_PTR(name
),
386 .required_for_online
= true,
387 .required_operstate_for_online
= LINK_OPERSTATE_RANGE_DEFAULT
,
388 .dhcp
= ADDRESS_FAMILY_NO
,
390 .dhcp_use_ntp
= true,
391 .dhcp_use_sip
= true,
392 .dhcp_use_dns
= true,
393 .dhcp_use_hostname
= true,
394 .dhcp_use_routes
= true,
395 .dhcp_use_gateway
= -1,
396 /* NOTE: this var might be overwritten by network_apply_anonymize_if_set */
397 .dhcp_send_hostname
= true,
398 .dhcp_send_release
= true,
399 /* To enable/disable RFC7844 Anonymity Profiles */
400 .dhcp_anonymize
= false,
401 .dhcp_route_metric
= DHCP_ROUTE_METRIC
,
402 /* NOTE: this var might be overwritten by network_apply_anonymize_if_set */
403 .dhcp_client_identifier
= DHCP_CLIENT_ID_DUID
,
404 .dhcp_route_table
= RT_TABLE_MAIN
,
405 .dhcp_route_table_set
= false,
406 /* NOTE: from man: UseMTU=... Defaults to false*/
407 .dhcp_use_mtu
= false,
408 /* NOTE: from man: UseTimezone=... Defaults to "no".*/
409 .dhcp_use_timezone
= false,
410 .rapid_commit
= true,
412 .dhcp6_use_ntp
= true,
413 .dhcp6_use_dns
= true,
415 .dhcp6_pd_assign_prefix
= true,
417 .dhcp_server_emit_dns
= true,
418 .dhcp_server_emit_ntp
= true,
419 .dhcp_server_emit_sip
= true,
420 .dhcp_server_emit_router
= true,
421 .dhcp_server_emit_timezone
= true,
423 .router_prefix_subnet_id
= -1,
424 .router_emit_dns
= true,
425 .router_emit_domains
= true,
430 .allow_port_to_be_root
= -1,
432 .multicast_flood
= -1,
433 .multicast_to_unicast
= -1,
434 .neighbor_suppression
= -1,
436 .bridge_proxy_arp
= -1,
437 .bridge_proxy_arp_wifi
= -1,
438 .priority
= LINK_BRIDGE_PORT_PRIORITY_INVALID
,
439 .multicast_router
= _MULTICAST_ROUTER_INVALID
,
441 .lldp_mode
= LLDP_MODE_ROUTERS_ONLY
,
443 .dns_default_route
= -1,
444 .llmnr
= RESOLVE_SUPPORT_YES
,
445 .mdns
= RESOLVE_SUPPORT_NO
,
446 .dnssec_mode
= _DNSSEC_MODE_INVALID
,
447 .dns_over_tls_mode
= _DNS_OVER_TLS_MODE_INVALID
,
449 /* If LinkLocalAddressing= is not set, then set to ADDRESS_FAMILY_IPV6 later. */
450 .link_local
= _ADDRESS_FAMILY_INVALID
,
452 .ipv6_privacy_extensions
= IPV6_PRIVACY_EXTENSIONS_NO
,
453 .ipv6_accept_ra
= -1,
454 .ipv6_dad_transmits
= -1,
455 .ipv6_hop_limit
= -1,
456 .ipv6_proxy_ndp
= -1,
457 .duid
.type
= _DUID_TYPE_INVALID
,
462 .ipv6_accept_ra_use_dns
= true,
463 .ipv6_accept_ra_use_autonomous_prefix
= true,
464 .ipv6_accept_ra_use_onlink_prefix
= true,
465 .ipv6_accept_ra_route_table
= RT_TABLE_MAIN
,
466 .ipv6_accept_ra_route_table_set
= false,
467 .ipv6_accept_ra_start_dhcp6_client
= true,
469 .configure_without_carrier
= false,
470 .ignore_carrier_loss
= -1,
471 .keep_configuration
= _KEEP_CONFIGURATION_INVALID
,
472 .ipv6_address_gen_mode
= _LINK_IPV6_ADDRESS_GEN_MODE_INVALID
,
473 .can_triple_sampling
= -1,
474 .can_termination
= -1,
475 .ip_service_type
= -1,
478 r
= config_parse_many(filename
, NETWORK_DIRS
, dropin_dirname
,
485 "RoutingPolicyRule\0"
488 "DHCP\0" /* compat */
493 "IPv6NDPProxyAddress\0"
497 "IPv6PrefixDelegation\0"
501 "TrafficControlQueueingDiscipline\0"
507 "DeficitRoundRobinScheduler\0"
508 "DeficitRoundRobinSchedulerClass\0"
513 "FairQueueingControlledDelay\0"
514 "GenericRandomEarlyDetection\0"
515 "HeavyHitterFilter\0"
516 "HierarchyTokenBucket\0"
517 "HierarchyTokenBucketClass\0"
520 "StochasticFairBlue\0"
521 "StochasticFairnessQueueing\0"
522 "TokenBucketFilter\0"
523 "TrivialLinkEqualizer\0",
524 config_item_perf_lookup
, network_network_gperf_lookup
,
525 CONFIG_PARSE_WARN
, network
);
529 network_apply_anonymize_if_set(network
);
531 r
= network_add_ipv4ll_route(network
);
533 log_warning_errno(r
, "%s: Failed to add IPv4LL route, ignoring: %m", network
->filename
);
535 r
= network_add_default_route_on_device(network
);
537 log_warning_errno(r
, "%s: Failed to add default route on device, ignoring: %m",
541 if (stat(filename
, &stats
) < 0)
543 network
->timestamp
= timespec_load(&stats
.st_mtim
);
545 if (network_verify(network
) < 0)
546 /* Ignore .network files that do not match the conditions. */
549 r
= ordered_hashmap_ensure_allocated(networks
, &string_hash_ops
);
553 r
= ordered_hashmap_put(*networks
, network
->name
, network
);
561 int network_load(Manager
*manager
, OrderedHashmap
**networks
) {
562 _cleanup_strv_free_
char **files
= NULL
;
568 ordered_hashmap_clear_with_destructor(*networks
, network_unref
);
570 r
= conf_files_list_strv(&files
, ".network", NULL
, 0, NETWORK_DIRS
);
572 return log_error_errno(r
, "Failed to enumerate network files: %m");
574 STRV_FOREACH(f
, files
) {
575 r
= network_load_one(manager
, networks
, *f
);
577 log_error_errno(r
, "Failed to load %s, ignoring: %m", *f
);
583 int network_reload(Manager
*manager
) {
584 OrderedHashmap
*new_networks
= NULL
;
591 r
= network_load(manager
, &new_networks
);
595 ORDERED_HASHMAP_FOREACH(n
, new_networks
, i
) {
596 r
= network_get_by_name(manager
, n
->name
, &old
);
598 continue; /* The .network file is new. */
600 if (n
->timestamp
!= old
->timestamp
)
601 continue; /* The .network file is modified. */
603 if (!streq(n
->filename
, old
->filename
))
606 r
= ordered_hashmap_replace(new_networks
, old
->name
, old
);
614 ordered_hashmap_free_with_destructor(manager
->networks
, network_unref
);
615 manager
->networks
= new_networks
;
620 ordered_hashmap_free_with_destructor(new_networks
, network_unref
);
625 static Network
*network_free(Network
*network
) {
626 IPv6ProxyNDPAddress
*ipv6_proxy_ndp_address
;
627 RoutePrefix
*route_prefix
;
628 RoutingPolicyRule
*rule
;
640 free(network
->filename
);
642 set_free_free(network
->match_mac
);
643 set_free_free(network
->match_permanent_mac
);
644 strv_free(network
->match_path
);
645 strv_free(network
->match_driver
);
646 strv_free(network
->match_type
);
647 strv_free(network
->match_name
);
648 strv_free(network
->match_property
);
649 strv_free(network
->match_wlan_iftype
);
650 strv_free(network
->match_ssid
);
651 set_free_free(network
->match_bssid
);
652 condition_free_list(network
->conditions
);
654 free(network
->description
);
655 free(network
->dhcp_vendor_class_identifier
);
656 free(network
->dhcp_mudurl
);
657 strv_free(network
->dhcp_user_class
);
658 free(network
->dhcp_hostname
);
659 set_free(network
->dhcp_black_listed_ip
);
660 set_free(network
->dhcp_request_options
);
661 set_free(network
->dhcp6_request_options
);
663 free(network
->dhcp6_mudurl
);
664 strv_free(network
->dhcp6_user_class
);
665 strv_free(network
->dhcp6_vendor_class
);
667 if (network
->dhcp_acd
)
668 sd_ipv4acd_unref(network
->dhcp_acd
);
670 strv_free(network
->ntp
);
672 strv_free(network
->sip
);
673 strv_free(network
->smtp
);
674 ordered_set_free_free(network
->search_domains
);
675 ordered_set_free_free(network
->route_domains
);
676 strv_free(network
->bind_carrier
);
678 ordered_set_free_free(network
->router_search_domains
);
679 free(network
->router_dns
);
680 set_free_free(network
->ndisc_black_listed_prefix
);
682 free(network
->bridge_name
);
683 free(network
->bond_name
);
684 free(network
->vrf_name
);
685 hashmap_free_free_key(network
->stacked_netdev_names
);
686 netdev_unref(network
->bridge
);
687 netdev_unref(network
->bond
);
688 netdev_unref(network
->vrf
);
689 hashmap_free_with_destructor(network
->stacked_netdevs
, netdev_unref
);
691 while ((route
= network
->static_routes
))
694 while ((nexthop
= network
->static_nexthops
))
695 nexthop_free(nexthop
);
697 while ((address
= network
->static_addresses
))
698 address_free(address
);
700 while ((fdb_entry
= network
->static_fdb_entries
))
701 fdb_entry_free(fdb_entry
);
703 while ((ipv6_proxy_ndp_address
= network
->ipv6_proxy_ndp_addresses
))
704 ipv6_proxy_ndp_address_free(ipv6_proxy_ndp_address
);
706 while ((neighbor
= network
->neighbors
))
707 neighbor_free(neighbor
);
709 while ((label
= network
->address_labels
))
710 address_label_free(label
);
712 while ((prefix
= network
->static_prefixes
))
715 while ((route_prefix
= network
->static_route_prefixes
))
716 route_prefix_free(route_prefix
);
718 while ((rule
= network
->rules
))
719 routing_policy_rule_free(rule
);
721 hashmap_free(network
->addresses_by_section
);
722 hashmap_free(network
->routes_by_section
);
723 hashmap_free(network
->nexthops_by_section
);
724 hashmap_free(network
->fdb_entries_by_section
);
725 hashmap_free(network
->neighbors_by_section
);
726 hashmap_free(network
->address_labels_by_section
);
727 hashmap_free(network
->prefixes_by_section
);
728 hashmap_free(network
->route_prefixes_by_section
);
729 hashmap_free(network
->rules_by_section
);
730 ordered_hashmap_free_with_destructor(network
->tc_by_section
, traffic_control_free
);
732 if (network
->manager
&&
733 network
->manager
->duids_requesting_uuid
)
734 set_remove(network
->manager
->duids_requesting_uuid
, &network
->duid
);
738 free(network
->dhcp_server_timezone
);
739 free(network
->dhcp_server_dns
);
740 free(network
->dhcp_server_ntp
);
741 free(network
->dhcp_server_sip
);
742 free(network
->dhcp_server_pop3
);
743 free(network
->dhcp_server_smtp
);
744 free(network
->dhcp_server_lpr
);
746 set_free_free(network
->dnssec_negative_trust_anchors
);
748 free(network
->lldp_mud
);
750 ordered_hashmap_free(network
->dhcp_client_send_options
);
751 ordered_hashmap_free(network
->dhcp_client_send_vendor_options
);
752 ordered_hashmap_free(network
->dhcp_server_send_options
);
753 ordered_hashmap_free(network
->dhcp_server_send_vendor_options
);
754 ordered_hashmap_free(network
->ipv6_tokens
);
756 return mfree(network
);
759 DEFINE_TRIVIAL_REF_UNREF_FUNC(Network
, network
, network_free
);
761 int network_get_by_name(Manager
*manager
, const char *name
, Network
**ret
) {
768 network
= ordered_hashmap_get(manager
->networks
, name
);
777 int network_get(Manager
*manager
, unsigned short iftype
, sd_device
*device
,
778 const char *ifname
, char * const *alternative_names
,
779 const struct ether_addr
*address
, const struct ether_addr
*permanent_address
,
780 enum nl80211_iftype wlan_iftype
, const char *ssid
, const struct ether_addr
*bssid
,
788 ORDERED_HASHMAP_FOREACH(network
, manager
->networks
, i
)
789 if (net_match_config(network
->match_mac
, network
->match_permanent_mac
,
790 network
->match_path
, network
->match_driver
,
791 network
->match_type
, network
->match_name
, network
->match_property
,
792 network
->match_wlan_iftype
, network
->match_ssid
, network
->match_bssid
,
793 iftype
, device
, address
, permanent_address
,
794 ifname
, alternative_names
, wlan_iftype
, ssid
, bssid
)) {
795 if (network
->match_name
&& device
) {
797 uint8_t name_assign_type
= NET_NAME_UNKNOWN
;
799 if (sd_device_get_sysattr_value(device
, "name_assign_type", &attr
) >= 0)
800 (void) safe_atou8(attr
, &name_assign_type
);
802 if (name_assign_type
== NET_NAME_ENUM
)
803 log_warning("%s: found matching network '%s', based on potentially unpredictable ifname",
804 ifname
, network
->filename
);
806 log_debug("%s: found matching network '%s'", ifname
, network
->filename
);
808 log_debug("%s: found matching network '%s'", ifname
, network
->filename
);
819 int network_apply(Network
*network
, Link
*link
) {
823 link
->network
= network_ref(network
);
825 if (network
->n_dns
> 0 ||
826 !strv_isempty(network
->ntp
) ||
827 !ordered_set_isempty(network
->search_domains
) ||
828 !ordered_set_isempty(network
->route_domains
))
834 bool network_has_static_ipv6_configurations(Network
*network
) {
842 LIST_FOREACH(addresses
, address
, network
->static_addresses
)
843 if (address
->family
== AF_INET6
)
846 LIST_FOREACH(routes
, route
, network
->static_routes
)
847 if (route
->family
== AF_INET6
)
850 LIST_FOREACH(static_fdb_entries
, fdb
, network
->static_fdb_entries
)
851 if (fdb
->family
== AF_INET6
)
854 LIST_FOREACH(neighbors
, neighbor
, network
->neighbors
)
855 if (neighbor
->family
== AF_INET6
)
858 if (!LIST_IS_EMPTY(network
->address_labels
))
861 if (!LIST_IS_EMPTY(network
->static_prefixes
))
867 int config_parse_stacked_netdev(const char *unit
,
868 const char *filename
,
871 unsigned section_line
,
877 _cleanup_free_
char *name
= NULL
;
878 NetDevKind kind
= ltype
;
887 NETDEV_KIND_VLAN
, NETDEV_KIND_MACVLAN
, NETDEV_KIND_MACVTAP
,
888 NETDEV_KIND_IPVLAN
, NETDEV_KIND_IPVTAP
, NETDEV_KIND_VXLAN
,
889 NETDEV_KIND_L2TP
, NETDEV_KIND_MACSEC
, _NETDEV_KIND_TUNNEL
,
892 if (!ifname_valid(rvalue
)) {
893 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
894 "Invalid netdev name in %s=, ignoring assignment: %s", lvalue
, rvalue
);
898 name
= strdup(rvalue
);
902 r
= hashmap_ensure_allocated(h
, &string_hash_ops
);
906 r
= hashmap_put(*h
, name
, INT_TO_PTR(kind
));
908 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
909 "Cannot add NetDev '%s' to network, ignoring assignment: %m", name
);
911 log_syntax(unit
, LOG_DEBUG
, filename
, line
, r
,
912 "NetDev '%s' specified twice, ignoring.", name
);
919 int config_parse_domains(
921 const char *filename
,
924 unsigned section_line
,
939 if (isempty(rvalue
)) {
940 n
->search_domains
= ordered_set_free_free(n
->search_domains
);
941 n
->route_domains
= ordered_set_free_free(n
->route_domains
);
947 _cleanup_free_
char *w
= NULL
, *normalized
= NULL
;
951 r
= extract_first_word(&p
, &w
, NULL
, 0);
953 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
954 "Failed to extract search or route domain, ignoring: %s", rvalue
);
960 is_route
= w
[0] == '~';
961 domain
= is_route
? w
+ 1 : w
;
963 if (dns_name_is_root(domain
) || streq(domain
, "*")) {
964 /* If the root domain appears as is, or the special token "*" is found, we'll
965 * consider this as routing domain, unconditionally. */
967 domain
= "."; /* make sure we don't allow empty strings, thus write the root
970 r
= dns_name_normalize(domain
, 0, &normalized
);
972 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
973 "'%s' is not a valid domain name, ignoring.", domain
);
979 if (is_localhost(domain
)) {
980 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
981 "'localhost' domain may not be configured as search or route domain, ignoring assignment: %s",
987 OrderedSet
**set
= is_route
? &n
->route_domains
: &n
->search_domains
;
988 r
= ordered_set_ensure_allocated(set
, &string_hash_ops
);
992 r
= ordered_set_put_strdup(*set
, domain
);
1000 int config_parse_ipv6token(
1002 const char *filename
,
1004 const char *section
,
1005 unsigned section_line
,
1012 union in_addr_union buffer
;
1013 struct in6_addr
*token
= data
;
1021 r
= in_addr_from_string(AF_INET6
, rvalue
, &buffer
);
1023 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1024 "Failed to parse IPv6 token, ignoring: %s", rvalue
);
1028 if (in_addr_is_null(AF_INET6
, &buffer
)) {
1029 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1030 "IPv6 token cannot be the ANY address, ignoring: %s", rvalue
);
1034 if ((buffer
.in6
.s6_addr32
[0] | buffer
.in6
.s6_addr32
[1]) != 0) {
1035 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1036 "IPv6 token cannot be longer than 64 bits, ignoring: %s", rvalue
);
1040 *token
= buffer
.in6
;
1045 static const char* const ipv6_privacy_extensions_table
[_IPV6_PRIVACY_EXTENSIONS_MAX
] = {
1046 [IPV6_PRIVACY_EXTENSIONS_NO
] = "no",
1047 [IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC
] = "prefer-public",
1048 [IPV6_PRIVACY_EXTENSIONS_YES
] = "yes",
1051 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(ipv6_privacy_extensions
, IPv6PrivacyExtensions
,
1052 IPV6_PRIVACY_EXTENSIONS_YES
);
1054 int config_parse_ipv6_privacy_extensions(
1056 const char *filename
,
1058 const char *section
,
1059 unsigned section_line
,
1066 IPv6PrivacyExtensions s
, *ipv6_privacy_extensions
= data
;
1071 assert(ipv6_privacy_extensions
);
1073 s
= ipv6_privacy_extensions_from_string(rvalue
);
1075 if (streq(rvalue
, "kernel"))
1076 s
= _IPV6_PRIVACY_EXTENSIONS_INVALID
;
1078 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1079 "Failed to parse IPv6 privacy extensions option, ignoring: %s", rvalue
);
1084 *ipv6_privacy_extensions
= s
;
1089 int config_parse_hostname(
1091 const char *filename
,
1093 const char *section
,
1094 unsigned section_line
,
1101 _cleanup_free_
char *hn
= NULL
;
1102 char **hostname
= data
;
1109 r
= config_parse_string(unit
, filename
, line
, section
, section_line
, lvalue
, ltype
, rvalue
, &hn
, userdata
);
1113 if (!hostname_is_valid(hn
, false)) {
1114 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1115 "Hostname is not valid, ignoring assignment: %s", rvalue
);
1119 r
= dns_name_is_valid(hn
);
1121 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1122 "Failed to check validity of hostname '%s', ignoring assignment: %m", rvalue
);
1126 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1127 "Hostname is not a valid DNS domain name, ignoring assignment: %s", rvalue
);
1131 return free_and_replace(*hostname
, hn
);
1134 int config_parse_timezone(
1136 const char *filename
,
1138 const char *section
,
1139 unsigned section_line
,
1146 _cleanup_free_
char *tz
= NULL
;
1147 char **datap
= data
;
1154 r
= config_parse_string(unit
, filename
, line
, section
, section_line
, lvalue
, ltype
, rvalue
, &tz
, userdata
);
1158 if (!timezone_is_valid(tz
, LOG_ERR
)) {
1159 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1160 "Timezone is not valid, ignoring assignment: %s", rvalue
);
1164 return free_and_replace(*datap
, tz
);
1167 int config_parse_dns(
1169 const char *filename
,
1171 const char *section
,
1172 unsigned section_line
,
1179 Network
*n
= userdata
;
1187 _cleanup_free_
char *w
= NULL
;
1188 union in_addr_union a
;
1189 struct in_addr_data
*m
;
1192 r
= extract_first_word(&rvalue
, &w
, NULL
, 0);
1196 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1197 "Invalid syntax, ignoring: %s", rvalue
);
1203 r
= in_addr_from_string_auto(w
, &family
, &a
);
1205 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1206 "Failed to parse dns server address, ignoring: %s", w
);
1210 m
= reallocarray(n
->dns
, n
->n_dns
+ 1, sizeof(struct in_addr_data
));
1214 m
[n
->n_dns
++] = (struct in_addr_data
) {
1225 int config_parse_dnssec_negative_trust_anchors(
1227 const char *filename
,
1229 const char *section
,
1230 unsigned section_line
,
1237 const char *p
= rvalue
;
1245 if (isempty(rvalue
)) {
1246 n
->dnssec_negative_trust_anchors
= set_free_free(n
->dnssec_negative_trust_anchors
);
1251 _cleanup_free_
char *w
= NULL
;
1253 r
= extract_first_word(&p
, &w
, NULL
, 0);
1255 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1256 "Failed to extract negative trust anchor domain, ignoring: %s", rvalue
);
1262 r
= dns_name_is_valid(w
);
1264 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1265 "%s is not a valid domain name, ignoring.", w
);
1269 r
= set_ensure_allocated(&n
->dnssec_negative_trust_anchors
, &dns_name_hash_ops
);
1273 r
= set_put(n
->dnssec_negative_trust_anchors
, w
);
1283 int config_parse_ntp(
1285 const char *filename
,
1287 const char *section
,
1288 unsigned section_line
,
1302 if (isempty(rvalue
)) {
1308 _cleanup_free_
char *w
= NULL
;
1310 r
= extract_first_word(&rvalue
, &w
, NULL
, 0);
1314 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1315 "Failed to extract NTP server name, ignoring: %s", rvalue
);
1321 r
= dns_name_is_valid_or_address(w
);
1323 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1324 "%s is not a valid domain name or IP address, ignoring.", w
);
1328 if (strv_length(*l
) > MAX_NTP_SERVERS
) {
1329 log_syntax(unit
, LOG_WARNING
, filename
, line
, 0,
1330 "More than %u NTP servers specified, ignoring \"%s\" and any subsequent entries.",
1331 MAX_NTP_SERVERS
, w
);
1335 r
= strv_consume(l
, TAKE_PTR(w
));
1343 int config_parse_required_for_online(
1345 const char *filename
,
1347 const char *section
,
1348 unsigned section_line
,
1355 Network
*network
= data
;
1356 LinkOperationalStateRange range
;
1357 bool required
= true;
1360 if (isempty(rvalue
)) {
1361 network
->required_for_online
= true;
1362 network
->required_operstate_for_online
= LINK_OPERSTATE_RANGE_DEFAULT
;
1366 r
= parse_operational_state_range(rvalue
, &range
);
1368 r
= parse_boolean(rvalue
);
1370 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1371 "Failed to parse %s= setting, ignoring assignment: %s",
1377 range
= LINK_OPERSTATE_RANGE_DEFAULT
;
1380 network
->required_for_online
= required
;
1381 network
->required_operstate_for_online
= range
;
1386 DEFINE_CONFIG_PARSE_ENUM(config_parse_keep_configuration
, keep_configuration
, KeepConfiguration
,
1387 "Failed to parse KeepConfiguration= setting");
1389 static const char* const keep_configuration_table
[_KEEP_CONFIGURATION_MAX
] = {
1390 [KEEP_CONFIGURATION_NO
] = "no",
1391 [KEEP_CONFIGURATION_DHCP_ON_STOP
] = "dhcp-on-stop",
1392 [KEEP_CONFIGURATION_DHCP
] = "dhcp",
1393 [KEEP_CONFIGURATION_STATIC
] = "static",
1394 [KEEP_CONFIGURATION_YES
] = "yes",
1397 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(keep_configuration
, KeepConfiguration
, KEEP_CONFIGURATION_YES
);