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_route_metric
= DHCP_ROUTE_METRIC
,
413 .dhcp6_use_ntp
= true,
414 .dhcp6_use_dns
= true,
416 .dhcp6_pd_assign_prefix
= true,
418 .dhcp_server_emit_dns
= true,
419 .dhcp_server_emit_ntp
= true,
420 .dhcp_server_emit_sip
= true,
421 .dhcp_server_emit_router
= true,
422 .dhcp_server_emit_timezone
= true,
424 .router_prefix_subnet_id
= -1,
425 .router_emit_dns
= true,
426 .router_emit_domains
= true,
431 .allow_port_to_be_root
= -1,
433 .multicast_flood
= -1,
434 .multicast_to_unicast
= -1,
435 .neighbor_suppression
= -1,
437 .bridge_proxy_arp
= -1,
438 .bridge_proxy_arp_wifi
= -1,
439 .priority
= LINK_BRIDGE_PORT_PRIORITY_INVALID
,
440 .multicast_router
= _MULTICAST_ROUTER_INVALID
,
442 .lldp_mode
= LLDP_MODE_ROUTERS_ONLY
,
444 .dns_default_route
= -1,
445 .llmnr
= RESOLVE_SUPPORT_YES
,
446 .mdns
= RESOLVE_SUPPORT_NO
,
447 .dnssec_mode
= _DNSSEC_MODE_INVALID
,
448 .dns_over_tls_mode
= _DNS_OVER_TLS_MODE_INVALID
,
450 /* If LinkLocalAddressing= is not set, then set to ADDRESS_FAMILY_IPV6 later. */
451 .link_local
= _ADDRESS_FAMILY_INVALID
,
453 .ipv6_privacy_extensions
= IPV6_PRIVACY_EXTENSIONS_NO
,
454 .ipv6_accept_ra
= -1,
455 .ipv6_dad_transmits
= -1,
456 .ipv6_hop_limit
= -1,
457 .ipv6_proxy_ndp
= -1,
458 .duid
.type
= _DUID_TYPE_INVALID
,
463 .ipv6_accept_ra_use_dns
= true,
464 .ipv6_accept_ra_use_autonomous_prefix
= true,
465 .ipv6_accept_ra_use_onlink_prefix
= true,
466 .ipv6_accept_ra_route_table
= RT_TABLE_MAIN
,
467 .ipv6_accept_ra_route_table_set
= false,
468 .ipv6_accept_ra_start_dhcp6_client
= true,
470 .configure_without_carrier
= false,
471 .ignore_carrier_loss
= -1,
472 .keep_configuration
= _KEEP_CONFIGURATION_INVALID
,
473 .ipv6_address_gen_mode
= _LINK_IPV6_ADDRESS_GEN_MODE_INVALID
,
474 .can_triple_sampling
= -1,
475 .can_termination
= -1,
476 .ip_service_type
= -1,
479 r
= config_parse_many(
480 filename
, NETWORK_DIRS
, dropin_dirname
,
487 "RoutingPolicyRule\0"
490 "DHCP\0" /* compat */
495 "IPv6NDPProxyAddress\0"
499 "IPv6PrefixDelegation\0"
503 "TrafficControlQueueingDiscipline\0"
509 "DeficitRoundRobinScheduler\0"
510 "DeficitRoundRobinSchedulerClass\0"
512 "FairQueueingControlledDelay\0"
513 "GenericRandomEarlyDetection\0"
514 "HeavyHitterFilter\0"
515 "HierarchyTokenBucket\0"
516 "HierarchyTokenBucketClass\0"
522 "QuickFairQueueing\0"
523 "QuickFairQueueingClass\0"
524 "StochasticFairBlue\0"
525 "StochasticFairnessQueueing\0"
526 "TokenBucketFilter\0"
527 "TrivialLinkEqualizer\0",
528 config_item_perf_lookup
, network_network_gperf_lookup
,
531 &network
->timestamp
);
535 network_apply_anonymize_if_set(network
);
537 r
= network_add_ipv4ll_route(network
);
539 log_warning_errno(r
, "%s: Failed to add IPv4LL route, ignoring: %m", network
->filename
);
541 r
= network_add_default_route_on_device(network
);
543 log_warning_errno(r
, "%s: Failed to add default route on device, ignoring: %m",
546 if (network_verify(network
) < 0)
547 /* Ignore .network files that do not match the conditions. */
550 r
= ordered_hashmap_ensure_allocated(networks
, &string_hash_ops
);
554 r
= ordered_hashmap_put(*networks
, network
->name
, network
);
562 int network_load(Manager
*manager
, OrderedHashmap
**networks
) {
563 _cleanup_strv_free_
char **files
= NULL
;
569 ordered_hashmap_clear_with_destructor(*networks
, network_unref
);
571 r
= conf_files_list_strv(&files
, ".network", NULL
, 0, NETWORK_DIRS
);
573 return log_error_errno(r
, "Failed to enumerate network files: %m");
575 STRV_FOREACH(f
, files
) {
576 r
= network_load_one(manager
, networks
, *f
);
578 log_error_errno(r
, "Failed to load %s, ignoring: %m", *f
);
584 int network_reload(Manager
*manager
) {
585 OrderedHashmap
*new_networks
= NULL
;
592 r
= network_load(manager
, &new_networks
);
596 ORDERED_HASHMAP_FOREACH(n
, new_networks
, i
) {
597 r
= network_get_by_name(manager
, n
->name
, &old
);
599 continue; /* The .network file is new. */
601 if (n
->timestamp
!= old
->timestamp
)
602 continue; /* The .network file is modified. */
604 if (!streq(n
->filename
, old
->filename
))
607 r
= ordered_hashmap_replace(new_networks
, old
->name
, old
);
615 ordered_hashmap_free_with_destructor(manager
->networks
, network_unref
);
616 manager
->networks
= new_networks
;
621 ordered_hashmap_free_with_destructor(new_networks
, network_unref
);
626 static Network
*network_free(Network
*network
) {
627 IPv6ProxyNDPAddress
*ipv6_proxy_ndp_address
;
628 RoutePrefix
*route_prefix
;
629 RoutingPolicyRule
*rule
;
641 free(network
->filename
);
643 set_free_free(network
->match_mac
);
644 set_free_free(network
->match_permanent_mac
);
645 strv_free(network
->match_path
);
646 strv_free(network
->match_driver
);
647 strv_free(network
->match_type
);
648 strv_free(network
->match_name
);
649 strv_free(network
->match_property
);
650 strv_free(network
->match_wlan_iftype
);
651 strv_free(network
->match_ssid
);
652 set_free_free(network
->match_bssid
);
653 condition_free_list(network
->conditions
);
655 free(network
->description
);
656 free(network
->dhcp_vendor_class_identifier
);
657 free(network
->dhcp_mudurl
);
658 strv_free(network
->dhcp_user_class
);
659 free(network
->dhcp_hostname
);
660 set_free(network
->dhcp_black_listed_ip
);
661 set_free(network
->dhcp_request_options
);
662 set_free(network
->dhcp6_request_options
);
664 free(network
->dhcp6_mudurl
);
665 strv_free(network
->dhcp6_user_class
);
666 strv_free(network
->dhcp6_vendor_class
);
668 if (network
->dhcp_acd
)
669 sd_ipv4acd_unref(network
->dhcp_acd
);
671 strv_free(network
->ntp
);
673 strv_free(network
->sip
);
674 strv_free(network
->smtp
);
675 ordered_set_free_free(network
->search_domains
);
676 ordered_set_free_free(network
->route_domains
);
677 strv_free(network
->bind_carrier
);
679 ordered_set_free_free(network
->router_search_domains
);
680 free(network
->router_dns
);
681 set_free_free(network
->ndisc_black_listed_prefix
);
683 free(network
->bridge_name
);
684 free(network
->bond_name
);
685 free(network
->vrf_name
);
686 hashmap_free_free_key(network
->stacked_netdev_names
);
687 netdev_unref(network
->bridge
);
688 netdev_unref(network
->bond
);
689 netdev_unref(network
->vrf
);
690 hashmap_free_with_destructor(network
->stacked_netdevs
, netdev_unref
);
692 while ((route
= network
->static_routes
))
695 while ((nexthop
= network
->static_nexthops
))
696 nexthop_free(nexthop
);
698 while ((address
= network
->static_addresses
))
699 address_free(address
);
701 while ((fdb_entry
= network
->static_fdb_entries
))
702 fdb_entry_free(fdb_entry
);
704 while ((ipv6_proxy_ndp_address
= network
->ipv6_proxy_ndp_addresses
))
705 ipv6_proxy_ndp_address_free(ipv6_proxy_ndp_address
);
707 while ((neighbor
= network
->neighbors
))
708 neighbor_free(neighbor
);
710 while ((label
= network
->address_labels
))
711 address_label_free(label
);
713 while ((prefix
= network
->static_prefixes
))
716 while ((route_prefix
= network
->static_route_prefixes
))
717 route_prefix_free(route_prefix
);
719 while ((rule
= network
->rules
))
720 routing_policy_rule_free(rule
);
722 hashmap_free(network
->addresses_by_section
);
723 hashmap_free(network
->routes_by_section
);
724 hashmap_free(network
->nexthops_by_section
);
725 hashmap_free(network
->fdb_entries_by_section
);
726 hashmap_free(network
->neighbors_by_section
);
727 hashmap_free(network
->address_labels_by_section
);
728 hashmap_free(network
->prefixes_by_section
);
729 hashmap_free(network
->route_prefixes_by_section
);
730 hashmap_free(network
->rules_by_section
);
731 ordered_hashmap_free_with_destructor(network
->tc_by_section
, traffic_control_free
);
733 if (network
->manager
&&
734 network
->manager
->duids_requesting_uuid
)
735 set_remove(network
->manager
->duids_requesting_uuid
, &network
->duid
);
739 free(network
->dhcp_server_timezone
);
740 free(network
->dhcp_server_dns
);
741 free(network
->dhcp_server_ntp
);
742 free(network
->dhcp_server_sip
);
743 free(network
->dhcp_server_pop3
);
744 free(network
->dhcp_server_smtp
);
745 free(network
->dhcp_server_lpr
);
747 set_free_free(network
->dnssec_negative_trust_anchors
);
749 free(network
->lldp_mud
);
751 ordered_hashmap_free(network
->dhcp_client_send_options
);
752 ordered_hashmap_free(network
->dhcp_client_send_vendor_options
);
753 ordered_hashmap_free(network
->dhcp_server_send_options
);
754 ordered_hashmap_free(network
->dhcp_server_send_vendor_options
);
755 ordered_hashmap_free(network
->ipv6_tokens
);
756 ordered_hashmap_free(network
->dhcp6_client_send_options
);
757 ordered_hashmap_free(network
->dhcp6_client_send_vendor_options
);
759 return mfree(network
);
762 DEFINE_TRIVIAL_REF_UNREF_FUNC(Network
, network
, network_free
);
764 int network_get_by_name(Manager
*manager
, const char *name
, Network
**ret
) {
771 network
= ordered_hashmap_get(manager
->networks
, name
);
780 int network_get(Manager
*manager
, unsigned short iftype
, sd_device
*device
,
781 const char *ifname
, char * const *alternative_names
, const char *driver
,
782 const struct ether_addr
*mac
, const struct ether_addr
*permanent_mac
,
783 enum nl80211_iftype wlan_iftype
, const char *ssid
, const struct ether_addr
*bssid
,
791 ORDERED_HASHMAP_FOREACH(network
, manager
->networks
, i
)
792 if (net_match_config(network
->match_mac
, network
->match_permanent_mac
,
793 network
->match_path
, network
->match_driver
,
794 network
->match_type
, network
->match_name
, network
->match_property
,
795 network
->match_wlan_iftype
, network
->match_ssid
, network
->match_bssid
,
796 device
, mac
, permanent_mac
, driver
, iftype
,
797 ifname
, alternative_names
, wlan_iftype
, ssid
, bssid
)) {
798 if (network
->match_name
&& device
) {
800 uint8_t name_assign_type
= NET_NAME_UNKNOWN
;
802 if (sd_device_get_sysattr_value(device
, "name_assign_type", &attr
) >= 0)
803 (void) safe_atou8(attr
, &name_assign_type
);
805 if (name_assign_type
== NET_NAME_ENUM
)
806 log_warning("%s: found matching network '%s', based on potentially unpredictable ifname",
807 ifname
, network
->filename
);
809 log_debug("%s: found matching network '%s'", ifname
, network
->filename
);
811 log_debug("%s: found matching network '%s'", ifname
, network
->filename
);
822 int network_apply(Network
*network
, Link
*link
) {
826 link
->network
= network_ref(network
);
828 if (network
->n_dns
> 0 ||
829 !strv_isempty(network
->ntp
) ||
830 !ordered_set_isempty(network
->search_domains
) ||
831 !ordered_set_isempty(network
->route_domains
))
837 bool network_has_static_ipv6_configurations(Network
*network
) {
845 LIST_FOREACH(addresses
, address
, network
->static_addresses
)
846 if (address
->family
== AF_INET6
)
849 LIST_FOREACH(routes
, route
, network
->static_routes
)
850 if (route
->family
== AF_INET6
)
853 LIST_FOREACH(static_fdb_entries
, fdb
, network
->static_fdb_entries
)
854 if (fdb
->family
== AF_INET6
)
857 LIST_FOREACH(neighbors
, neighbor
, network
->neighbors
)
858 if (neighbor
->family
== AF_INET6
)
861 if (!LIST_IS_EMPTY(network
->address_labels
))
864 if (!LIST_IS_EMPTY(network
->static_prefixes
))
870 int config_parse_stacked_netdev(const char *unit
,
871 const char *filename
,
874 unsigned section_line
,
880 _cleanup_free_
char *name
= NULL
;
881 NetDevKind kind
= ltype
;
890 NETDEV_KIND_VLAN
, NETDEV_KIND_MACVLAN
, NETDEV_KIND_MACVTAP
,
891 NETDEV_KIND_IPVLAN
, NETDEV_KIND_IPVTAP
, NETDEV_KIND_VXLAN
,
892 NETDEV_KIND_L2TP
, NETDEV_KIND_MACSEC
, _NETDEV_KIND_TUNNEL
,
895 if (!ifname_valid(rvalue
)) {
896 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
897 "Invalid netdev name in %s=, ignoring assignment: %s", lvalue
, rvalue
);
901 name
= strdup(rvalue
);
905 r
= hashmap_ensure_allocated(h
, &string_hash_ops
);
909 r
= hashmap_put(*h
, name
, INT_TO_PTR(kind
));
911 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
912 "Cannot add NetDev '%s' to network, ignoring assignment: %m", name
);
914 log_syntax(unit
, LOG_DEBUG
, filename
, line
, r
,
915 "NetDev '%s' specified twice, ignoring.", name
);
922 int config_parse_domains(
924 const char *filename
,
927 unsigned section_line
,
942 if (isempty(rvalue
)) {
943 n
->search_domains
= ordered_set_free_free(n
->search_domains
);
944 n
->route_domains
= ordered_set_free_free(n
->route_domains
);
950 _cleanup_free_
char *w
= NULL
, *normalized
= NULL
;
954 r
= extract_first_word(&p
, &w
, NULL
, 0);
956 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
957 "Failed to extract search or route domain, ignoring: %s", rvalue
);
963 is_route
= w
[0] == '~';
964 domain
= is_route
? w
+ 1 : w
;
966 if (dns_name_is_root(domain
) || streq(domain
, "*")) {
967 /* If the root domain appears as is, or the special token "*" is found, we'll
968 * consider this as routing domain, unconditionally. */
970 domain
= "."; /* make sure we don't allow empty strings, thus write the root
973 r
= dns_name_normalize(domain
, 0, &normalized
);
975 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
976 "'%s' is not a valid domain name, ignoring.", domain
);
982 if (is_localhost(domain
)) {
983 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
984 "'localhost' domain may not be configured as search or route domain, ignoring assignment: %s",
990 OrderedSet
**set
= is_route
? &n
->route_domains
: &n
->search_domains
;
991 r
= ordered_set_ensure_allocated(set
, &string_hash_ops
);
995 r
= ordered_set_put_strdup(*set
, domain
);
1003 int config_parse_ipv6token(
1005 const char *filename
,
1007 const char *section
,
1008 unsigned section_line
,
1015 union in_addr_union buffer
;
1016 struct in6_addr
*token
= data
;
1024 r
= in_addr_from_string(AF_INET6
, rvalue
, &buffer
);
1026 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1027 "Failed to parse IPv6 token, ignoring: %s", rvalue
);
1031 if (in_addr_is_null(AF_INET6
, &buffer
)) {
1032 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1033 "IPv6 token cannot be the ANY address, ignoring: %s", rvalue
);
1037 if ((buffer
.in6
.s6_addr32
[0] | buffer
.in6
.s6_addr32
[1]) != 0) {
1038 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1039 "IPv6 token cannot be longer than 64 bits, ignoring: %s", rvalue
);
1043 *token
= buffer
.in6
;
1048 static const char* const ipv6_privacy_extensions_table
[_IPV6_PRIVACY_EXTENSIONS_MAX
] = {
1049 [IPV6_PRIVACY_EXTENSIONS_NO
] = "no",
1050 [IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC
] = "prefer-public",
1051 [IPV6_PRIVACY_EXTENSIONS_YES
] = "yes",
1054 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(ipv6_privacy_extensions
, IPv6PrivacyExtensions
,
1055 IPV6_PRIVACY_EXTENSIONS_YES
);
1057 int config_parse_ipv6_privacy_extensions(
1059 const char *filename
,
1061 const char *section
,
1062 unsigned section_line
,
1069 IPv6PrivacyExtensions s
, *ipv6_privacy_extensions
= data
;
1074 assert(ipv6_privacy_extensions
);
1076 s
= ipv6_privacy_extensions_from_string(rvalue
);
1078 if (streq(rvalue
, "kernel"))
1079 s
= _IPV6_PRIVACY_EXTENSIONS_INVALID
;
1081 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1082 "Failed to parse IPv6 privacy extensions option, ignoring: %s", rvalue
);
1087 *ipv6_privacy_extensions
= s
;
1092 int config_parse_hostname(
1094 const char *filename
,
1096 const char *section
,
1097 unsigned section_line
,
1104 _cleanup_free_
char *hn
= NULL
;
1105 char **hostname
= data
;
1112 r
= config_parse_string(unit
, filename
, line
, section
, section_line
, lvalue
, ltype
, rvalue
, &hn
, userdata
);
1116 if (!hostname_is_valid(hn
, false)) {
1117 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1118 "Hostname is not valid, ignoring assignment: %s", rvalue
);
1122 r
= dns_name_is_valid(hn
);
1124 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1125 "Failed to check validity of hostname '%s', ignoring assignment: %m", rvalue
);
1129 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1130 "Hostname is not a valid DNS domain name, ignoring assignment: %s", rvalue
);
1134 return free_and_replace(*hostname
, hn
);
1137 int config_parse_timezone(
1139 const char *filename
,
1141 const char *section
,
1142 unsigned section_line
,
1149 _cleanup_free_
char *tz
= NULL
;
1150 char **datap
= data
;
1157 r
= config_parse_string(unit
, filename
, line
, section
, section_line
, lvalue
, ltype
, rvalue
, &tz
, userdata
);
1161 if (!timezone_is_valid(tz
, LOG_ERR
)) {
1162 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1163 "Timezone is not valid, ignoring assignment: %s", rvalue
);
1167 return free_and_replace(*datap
, tz
);
1170 int config_parse_dns(
1172 const char *filename
,
1174 const char *section
,
1175 unsigned section_line
,
1182 Network
*n
= userdata
;
1190 _cleanup_free_
char *w
= NULL
;
1191 union in_addr_union a
;
1192 struct in_addr_data
*m
;
1195 r
= extract_first_word(&rvalue
, &w
, NULL
, 0);
1199 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1200 "Invalid syntax, ignoring: %s", rvalue
);
1206 r
= in_addr_from_string_auto(w
, &family
, &a
);
1208 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1209 "Failed to parse dns server address, ignoring: %s", w
);
1213 m
= reallocarray(n
->dns
, n
->n_dns
+ 1, sizeof(struct in_addr_data
));
1217 m
[n
->n_dns
++] = (struct in_addr_data
) {
1228 int config_parse_dnssec_negative_trust_anchors(
1230 const char *filename
,
1232 const char *section
,
1233 unsigned section_line
,
1240 const char *p
= rvalue
;
1248 if (isempty(rvalue
)) {
1249 n
->dnssec_negative_trust_anchors
= set_free_free(n
->dnssec_negative_trust_anchors
);
1254 _cleanup_free_
char *w
= NULL
;
1256 r
= extract_first_word(&p
, &w
, NULL
, 0);
1258 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1259 "Failed to extract negative trust anchor domain, ignoring: %s", rvalue
);
1265 r
= dns_name_is_valid(w
);
1267 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1268 "%s is not a valid domain name, ignoring.", w
);
1272 r
= set_ensure_allocated(&n
->dnssec_negative_trust_anchors
, &dns_name_hash_ops
);
1276 r
= set_put(n
->dnssec_negative_trust_anchors
, w
);
1286 int config_parse_ntp(
1288 const char *filename
,
1290 const char *section
,
1291 unsigned section_line
,
1305 if (isempty(rvalue
)) {
1311 _cleanup_free_
char *w
= NULL
;
1313 r
= extract_first_word(&rvalue
, &w
, NULL
, 0);
1317 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1318 "Failed to extract NTP server name, ignoring: %s", rvalue
);
1324 r
= dns_name_is_valid_or_address(w
);
1326 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1327 "%s is not a valid domain name or IP address, ignoring.", w
);
1331 if (strv_length(*l
) > MAX_NTP_SERVERS
) {
1332 log_syntax(unit
, LOG_WARNING
, filename
, line
, 0,
1333 "More than %u NTP servers specified, ignoring \"%s\" and any subsequent entries.",
1334 MAX_NTP_SERVERS
, w
);
1338 r
= strv_consume(l
, TAKE_PTR(w
));
1346 int config_parse_required_for_online(
1348 const char *filename
,
1350 const char *section
,
1351 unsigned section_line
,
1358 Network
*network
= data
;
1359 LinkOperationalStateRange range
;
1360 bool required
= true;
1363 if (isempty(rvalue
)) {
1364 network
->required_for_online
= true;
1365 network
->required_operstate_for_online
= LINK_OPERSTATE_RANGE_DEFAULT
;
1369 r
= parse_operational_state_range(rvalue
, &range
);
1371 r
= parse_boolean(rvalue
);
1373 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1374 "Failed to parse %s= setting, ignoring assignment: %s",
1380 range
= LINK_OPERSTATE_RANGE_DEFAULT
;
1383 network
->required_for_online
= required
;
1384 network
->required_operstate_for_online
= range
;
1389 DEFINE_CONFIG_PARSE_ENUM(config_parse_keep_configuration
, keep_configuration
, KeepConfiguration
,
1390 "Failed to parse KeepConfiguration= setting");
1392 static const char* const keep_configuration_table
[_KEEP_CONFIGURATION_MAX
] = {
1393 [KEEP_CONFIGURATION_NO
] = "no",
1394 [KEEP_CONFIGURATION_DHCP_ON_STOP
] = "dhcp-on-stop",
1395 [KEEP_CONFIGURATION_DHCP
] = "dhcp",
1396 [KEEP_CONFIGURATION_STATIC
] = "static",
1397 [KEEP_CONFIGURATION_YES
] = "yes",
1400 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(keep_configuration
, KeepConfiguration
, KEEP_CONFIGURATION_YES
);