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_wlan_iftype
) &&
170 strv_isempty(network
->match_ssid
) && !network
->conditions
)
171 return log_warning_errno(SYNTHETIC_ERRNO(EINVAL
),
172 "%s: No valid settings found in the [Match] section, ignoring file. "
173 "To match all interfaces, add Name=* in the [Match] section.",
176 /* skip out early if configuration does not match the environment */
177 if (!condition_test_list(network
->conditions
, environ
, NULL
, NULL
, NULL
))
178 return log_debug_errno(SYNTHETIC_ERRNO(EINVAL
),
179 "%s: Conditions in the file do not match the system environment, skipping.",
182 (void) network_resolve_netdev_one(network
, network
->bond_name
, NETDEV_KIND_BOND
, &network
->bond
);
183 (void) network_resolve_netdev_one(network
, network
->bridge_name
, NETDEV_KIND_BRIDGE
, &network
->bridge
);
184 (void) network_resolve_netdev_one(network
, network
->vrf_name
, NETDEV_KIND_VRF
, &network
->vrf
);
185 (void) network_resolve_stacked_netdevs(network
);
187 /* Free unnecessary entries. */
188 network
->bond_name
= mfree(network
->bond_name
);
189 network
->bridge_name
= mfree(network
->bridge_name
);
190 network
->vrf_name
= mfree(network
->vrf_name
);
191 network
->stacked_netdev_names
= hashmap_free_free_key(network
->stacked_netdev_names
);
194 /* Bonding slave does not support addressing. */
195 if (network
->ipv6_accept_ra
> 0) {
196 log_warning("%s: Cannot enable IPv6AcceptRA= when Bond= is specified, disabling IPv6AcceptRA=.",
198 network
->ipv6_accept_ra
= 0;
200 if (network
->link_local
>= 0 && network
->link_local
!= ADDRESS_FAMILY_NO
) {
201 log_warning("%s: Cannot enable LinkLocalAddressing= when Bond= is specified, disabling LinkLocalAddressing=.",
203 network
->link_local
= ADDRESS_FAMILY_NO
;
205 if (network
->dhcp
!= ADDRESS_FAMILY_NO
) {
206 log_warning("%s: Cannot enable DHCP= when Bond= is specified, disabling DHCP=.",
208 network
->dhcp
= ADDRESS_FAMILY_NO
;
210 if (network
->dhcp_server
) {
211 log_warning("%s: Cannot enable DHCPServer= when Bond= is specified, disabling DHCPServer=.",
213 network
->dhcp_server
= false;
215 if (network
->n_static_addresses
> 0) {
216 log_warning("%s: Cannot set addresses when Bond= is specified, ignoring addresses.",
218 while ((address
= network
->static_addresses
))
219 address_free(address
);
221 if (network
->n_static_routes
> 0) {
222 log_warning("%s: Cannot set routes when Bond= is specified, ignoring routes.",
224 while ((route
= network
->static_routes
))
229 if (network
->link_local
< 0)
230 network
->link_local
= network
->bridge
? ADDRESS_FAMILY_NO
: ADDRESS_FAMILY_IPV6
;
232 if (!FLAGS_SET(network
->link_local
, ADDRESS_FAMILY_IPV6
)) {
233 if (network
->ipv6_accept_ra
> 0) {
234 log_warning("%s: IPv6AcceptRA= is enabled by the .network file but IPv6 link local addressing is disabled. "
235 "Disabling IPv6AcceptRA=.", network
->filename
);
236 network
->ipv6_accept_ra
= false;
239 if (FLAGS_SET(network
->dhcp
, ADDRESS_FAMILY_IPV6
)) {
240 log_warning("%s: DHCPv6 client is enabled by the .network file but IPv6 link local addressing is disabled. "
241 "Disabling DHCPv6 client.", network
->filename
);
242 SET_FLAG(network
->dhcp
, ADDRESS_FAMILY_IPV6
, false);
245 if (network
->router_prefix_delegation
!= RADV_PREFIX_DELEGATION_NONE
) {
246 log_warning("%s: IPv6PrefixDelegation= is enabled but IPv6 link local addressing is disabled. "
247 "Disabling IPv6PrefixDelegation=.", network
->filename
);
248 network
->router_prefix_delegation
= RADV_PREFIX_DELEGATION_NONE
;
252 if (FLAGS_SET(network
->link_local
, ADDRESS_FAMILY_FALLBACK_IPV4
) &&
253 !FLAGS_SET(network
->dhcp
, ADDRESS_FAMILY_IPV4
)) {
254 log_warning("%s: fallback assignment of IPv4 link local address is enabled but DHCPv4 is disabled. "
255 "Disabling the fallback assignment.", network
->filename
);
256 SET_FLAG(network
->link_local
, ADDRESS_FAMILY_FALLBACK_IPV4
, false);
259 if (network
->ipv6_accept_ra
< 0 && network
->bridge
)
260 network
->ipv6_accept_ra
= false;
262 /* IPMasquerade=yes implies IPForward=yes */
263 if (network
->ip_masquerade
)
264 network
->ip_forward
|= ADDRESS_FAMILY_IPV4
;
266 if (network
->mtu
> 0 && network
->dhcp_use_mtu
) {
267 log_warning("%s: MTUBytes= in [Link] section and UseMTU= in [DHCP] section are set. "
268 "Disabling UseMTU=.", network
->filename
);
269 network
->dhcp_use_mtu
= false;
272 if (network
->dhcp_use_gateway
< 0)
273 network
->dhcp_use_gateway
= network
->dhcp_use_routes
;
275 if (network
->ignore_carrier_loss
< 0)
276 network
->ignore_carrier_loss
= network
->configure_without_carrier
;
278 if (network
->dhcp_critical
>= 0) {
279 if (network
->keep_configuration
>= 0)
280 log_warning("%s: Both KeepConfiguration= and deprecated CriticalConnection= are set. "
281 "Ignoring CriticalConnection=.", network
->filename
);
282 else if (network
->dhcp_critical
)
283 /* CriticalConnection=yes also preserve foreign static configurations. */
284 network
->keep_configuration
= KEEP_CONFIGURATION_YES
;
286 network
->keep_configuration
= KEEP_CONFIGURATION_NO
;
289 if (network
->keep_configuration
< 0)
290 network
->keep_configuration
= KEEP_CONFIGURATION_NO
;
292 LIST_FOREACH_SAFE(addresses
, address
, address_next
, network
->static_addresses
)
293 if (address_section_verify(address
) < 0)
294 address_free(address
);
296 LIST_FOREACH_SAFE(routes
, route
, route_next
, network
->static_routes
)
297 if (route_section_verify(route
, network
) < 0)
300 LIST_FOREACH_SAFE(nexthops
, nexthop
, nextnop_next
, network
->static_nexthops
)
301 if (nexthop_section_verify(nexthop
) < 0)
302 nexthop_free(nexthop
);
304 LIST_FOREACH_SAFE(static_fdb_entries
, fdb
, fdb_next
, network
->static_fdb_entries
)
305 if (section_is_invalid(fdb
->section
))
308 LIST_FOREACH_SAFE(neighbors
, neighbor
, neighbor_next
, network
->neighbors
)
309 if (neighbor_section_verify(neighbor
) < 0)
310 neighbor_free(neighbor
);
312 LIST_FOREACH_SAFE(labels
, label
, label_next
, network
->address_labels
)
313 if (section_is_invalid(label
->section
))
314 address_label_free(label
);
316 LIST_FOREACH_SAFE(prefixes
, prefix
, prefix_next
, network
->static_prefixes
)
317 if (section_is_invalid(prefix
->section
))
320 LIST_FOREACH_SAFE(route_prefixes
, route_prefix
, route_prefix_next
, network
->static_route_prefixes
)
321 if (section_is_invalid(route_prefix
->section
))
322 route_prefix_free(route_prefix
);
324 LIST_FOREACH_SAFE(rules
, rule
, rule_next
, network
->rules
)
325 if (routing_policy_rule_section_verify(rule
) < 0)
326 routing_policy_rule_free(rule
);
328 bool has_root
= false, has_clsact
= false;
329 ORDERED_HASHMAP_FOREACH(tc
, network
->tc_by_section
, i
)
330 if (traffic_control_section_verify(tc
, &has_root
, &has_clsact
) < 0)
331 traffic_control_free(tc
);
336 int network_load_one(Manager
*manager
, OrderedHashmap
**networks
, const char *filename
) {
337 _cleanup_free_
char *fname
= NULL
, *name
= NULL
;
338 _cleanup_(network_unrefp
) Network
*network
= NULL
;
339 _cleanup_fclose_
FILE *file
= NULL
;
340 const char *dropin_dirname
;
347 file
= fopen(filename
, "re");
355 if (null_or_empty_fd(fileno(file
))) {
356 log_debug("Skipping empty file: %s", filename
);
360 fname
= strdup(filename
);
364 name
= strdup(basename(filename
));
368 d
= strrchr(name
, '.');
374 dropin_dirname
= strjoina(name
, ".network.d");
376 network
= new(Network
, 1);
380 *network
= (Network
) {
381 .filename
= TAKE_PTR(fname
),
382 .name
= TAKE_PTR(name
),
387 .required_for_online
= true,
388 .required_operstate_for_online
= LINK_OPERSTATE_RANGE_DEFAULT
,
389 .dhcp
= ADDRESS_FAMILY_NO
,
391 .dhcp_use_ntp
= true,
392 .dhcp_use_sip
= true,
393 .dhcp_use_dns
= true,
394 .dhcp_use_hostname
= true,
395 .dhcp_use_routes
= true,
396 .dhcp_use_gateway
= -1,
397 /* NOTE: this var might be overwritten by network_apply_anonymize_if_set */
398 .dhcp_send_hostname
= true,
399 .dhcp_send_release
= true,
400 /* To enable/disable RFC7844 Anonymity Profiles */
401 .dhcp_anonymize
= false,
402 .dhcp_route_metric
= DHCP_ROUTE_METRIC
,
403 /* NOTE: this var might be overwritten by network_apply_anonymize_if_set */
404 .dhcp_client_identifier
= DHCP_CLIENT_ID_DUID
,
405 .dhcp_route_table
= RT_TABLE_MAIN
,
406 .dhcp_route_table_set
= false,
407 /* NOTE: from man: UseMTU=... Defaults to false*/
408 .dhcp_use_mtu
= false,
409 /* NOTE: from man: UseTimezone=... Defaults to "no".*/
410 .dhcp_use_timezone
= false,
411 .rapid_commit
= true,
413 .dhcp6_route_metric
= DHCP_ROUTE_METRIC
,
414 .dhcp6_use_ntp
= true,
415 .dhcp6_use_dns
= true,
417 .dhcp6_pd_assign_prefix
= true,
419 .dhcp_server_emit
[SD_DHCP_LEASE_DNS
].emit
= true,
420 .dhcp_server_emit
[SD_DHCP_LEASE_NTP
].emit
= true,
421 .dhcp_server_emit
[SD_DHCP_LEASE_SIP
].emit
= true,
423 .dhcp_server_emit_router
= true,
424 .dhcp_server_emit_timezone
= true,
426 .router_prefix_subnet_id
= -1,
427 .router_emit_dns
= true,
428 .router_emit_domains
= true,
433 .allow_port_to_be_root
= -1,
435 .multicast_flood
= -1,
436 .multicast_to_unicast
= -1,
437 .neighbor_suppression
= -1,
439 .bridge_proxy_arp
= -1,
440 .bridge_proxy_arp_wifi
= -1,
441 .priority
= LINK_BRIDGE_PORT_PRIORITY_INVALID
,
442 .multicast_router
= _MULTICAST_ROUTER_INVALID
,
444 .lldp_mode
= LLDP_MODE_ROUTERS_ONLY
,
446 .dns_default_route
= -1,
447 .llmnr
= RESOLVE_SUPPORT_YES
,
448 .mdns
= RESOLVE_SUPPORT_NO
,
449 .dnssec_mode
= _DNSSEC_MODE_INVALID
,
450 .dns_over_tls_mode
= _DNS_OVER_TLS_MODE_INVALID
,
452 /* If LinkLocalAddressing= is not set, then set to ADDRESS_FAMILY_IPV6 later. */
453 .link_local
= _ADDRESS_FAMILY_INVALID
,
455 .ipv4_accept_local
= -1,
457 .ipv6_privacy_extensions
= IPV6_PRIVACY_EXTENSIONS_NO
,
458 .ipv6_accept_ra
= -1,
459 .ipv6_dad_transmits
= -1,
460 .ipv6_hop_limit
= -1,
461 .ipv6_proxy_ndp
= -1,
462 .duid
.type
= _DUID_TYPE_INVALID
,
467 .ipv6_accept_ra_use_dns
= true,
468 .ipv6_accept_ra_use_autonomous_prefix
= true,
469 .ipv6_accept_ra_use_onlink_prefix
= true,
470 .ipv6_accept_ra_route_table
= RT_TABLE_MAIN
,
471 .ipv6_accept_ra_route_table_set
= false,
472 .ipv6_accept_ra_start_dhcp6_client
= true,
474 .configure_without_carrier
= false,
475 .ignore_carrier_loss
= -1,
476 .keep_configuration
= _KEEP_CONFIGURATION_INVALID
,
477 .ipv6_address_gen_mode
= _LINK_IPV6_ADDRESS_GEN_MODE_INVALID
,
478 .can_triple_sampling
= -1,
479 .can_termination
= -1,
480 .ip_service_type
= -1,
483 r
= config_parse_many(
484 filename
, NETWORK_DIRS
, dropin_dirname
,
491 "RoutingPolicyRule\0"
494 "DHCP\0" /* compat */
499 "IPv6NDPProxyAddress\0"
503 "IPv6PrefixDelegation\0"
507 "TrafficControlQueueingDiscipline\0"
513 "DeficitRoundRobinScheduler\0"
514 "DeficitRoundRobinSchedulerClass\0"
515 "EnhancedTransmissionSelection\0"
517 "FairQueueingControlledDelay\0"
518 "GenericRandomEarlyDetection\0"
519 "HeavyHitterFilter\0"
520 "HierarchyTokenBucket\0"
521 "HierarchyTokenBucketClass\0"
527 "QuickFairQueueing\0"
528 "QuickFairQueueingClass\0"
529 "StochasticFairBlue\0"
530 "StochasticFairnessQueueing\0"
531 "TokenBucketFilter\0"
532 "TrivialLinkEqualizer\0",
533 config_item_perf_lookup
, network_network_gperf_lookup
,
536 &network
->timestamp
);
540 network_apply_anonymize_if_set(network
);
542 r
= network_add_ipv4ll_route(network
);
544 log_warning_errno(r
, "%s: Failed to add IPv4LL route, ignoring: %m", network
->filename
);
546 r
= network_add_default_route_on_device(network
);
548 log_warning_errno(r
, "%s: Failed to add default route on device, ignoring: %m",
551 if (network_verify(network
) < 0)
552 /* Ignore .network files that do not match the conditions. */
555 r
= ordered_hashmap_ensure_allocated(networks
, &string_hash_ops
);
559 r
= ordered_hashmap_put(*networks
, network
->name
, network
);
567 int network_load(Manager
*manager
, OrderedHashmap
**networks
) {
568 _cleanup_strv_free_
char **files
= NULL
;
574 ordered_hashmap_clear_with_destructor(*networks
, network_unref
);
576 r
= conf_files_list_strv(&files
, ".network", NULL
, 0, NETWORK_DIRS
);
578 return log_error_errno(r
, "Failed to enumerate network files: %m");
580 STRV_FOREACH(f
, files
) {
581 r
= network_load_one(manager
, networks
, *f
);
583 log_error_errno(r
, "Failed to load %s, ignoring: %m", *f
);
589 int network_reload(Manager
*manager
) {
590 OrderedHashmap
*new_networks
= NULL
;
597 r
= network_load(manager
, &new_networks
);
601 ORDERED_HASHMAP_FOREACH(n
, new_networks
, i
) {
602 r
= network_get_by_name(manager
, n
->name
, &old
);
604 continue; /* The .network file is new. */
606 if (n
->timestamp
!= old
->timestamp
)
607 continue; /* The .network file is modified. */
609 if (!streq(n
->filename
, old
->filename
))
612 r
= ordered_hashmap_replace(new_networks
, old
->name
, old
);
620 ordered_hashmap_free_with_destructor(manager
->networks
, network_unref
);
621 manager
->networks
= new_networks
;
626 ordered_hashmap_free_with_destructor(new_networks
, network_unref
);
631 static Network
*network_free(Network
*network
) {
632 IPv6ProxyNDPAddress
*ipv6_proxy_ndp_address
;
633 RoutePrefix
*route_prefix
;
634 RoutingPolicyRule
*rule
;
646 free(network
->filename
);
648 set_free_free(network
->match_mac
);
649 set_free_free(network
->match_permanent_mac
);
650 strv_free(network
->match_path
);
651 strv_free(network
->match_driver
);
652 strv_free(network
->match_type
);
653 strv_free(network
->match_name
);
654 strv_free(network
->match_property
);
655 strv_free(network
->match_wlan_iftype
);
656 strv_free(network
->match_ssid
);
657 set_free_free(network
->match_bssid
);
658 condition_free_list(network
->conditions
);
660 free(network
->description
);
661 free(network
->dhcp_vendor_class_identifier
);
662 free(network
->dhcp_mudurl
);
663 strv_free(network
->dhcp_user_class
);
664 free(network
->dhcp_hostname
);
665 set_free(network
->dhcp_black_listed_ip
);
666 set_free(network
->dhcp_request_options
);
667 set_free(network
->dhcp6_request_options
);
669 free(network
->dhcp6_mudurl
);
670 strv_free(network
->dhcp6_user_class
);
671 strv_free(network
->dhcp6_vendor_class
);
673 if (network
->dhcp_acd
)
674 sd_ipv4acd_unref(network
->dhcp_acd
);
676 strv_free(network
->ntp
);
678 ordered_set_free_free(network
->search_domains
);
679 ordered_set_free_free(network
->route_domains
);
680 strv_free(network
->bind_carrier
);
682 ordered_set_free_free(network
->router_search_domains
);
683 free(network
->router_dns
);
684 set_free_free(network
->ndisc_black_listed_prefix
);
686 free(network
->bridge_name
);
687 free(network
->bond_name
);
688 free(network
->vrf_name
);
689 hashmap_free_free_key(network
->stacked_netdev_names
);
690 netdev_unref(network
->bridge
);
691 netdev_unref(network
->bond
);
692 netdev_unref(network
->vrf
);
693 hashmap_free_with_destructor(network
->stacked_netdevs
, netdev_unref
);
695 while ((route
= network
->static_routes
))
698 while ((nexthop
= network
->static_nexthops
))
699 nexthop_free(nexthop
);
701 while ((address
= network
->static_addresses
))
702 address_free(address
);
704 while ((fdb_entry
= network
->static_fdb_entries
))
705 fdb_entry_free(fdb_entry
);
707 while ((ipv6_proxy_ndp_address
= network
->ipv6_proxy_ndp_addresses
))
708 ipv6_proxy_ndp_address_free(ipv6_proxy_ndp_address
);
710 while ((neighbor
= network
->neighbors
))
711 neighbor_free(neighbor
);
713 while ((label
= network
->address_labels
))
714 address_label_free(label
);
716 while ((prefix
= network
->static_prefixes
))
719 while ((route_prefix
= network
->static_route_prefixes
))
720 route_prefix_free(route_prefix
);
722 while ((rule
= network
->rules
))
723 routing_policy_rule_free(rule
);
725 hashmap_free(network
->addresses_by_section
);
726 hashmap_free(network
->routes_by_section
);
727 hashmap_free(network
->nexthops_by_section
);
728 hashmap_free(network
->fdb_entries_by_section
);
729 hashmap_free(network
->neighbors_by_section
);
730 hashmap_free(network
->address_labels_by_section
);
731 hashmap_free(network
->prefixes_by_section
);
732 hashmap_free(network
->route_prefixes_by_section
);
733 hashmap_free(network
->rules_by_section
);
734 ordered_hashmap_free_with_destructor(network
->tc_by_section
, traffic_control_free
);
736 if (network
->manager
&&
737 network
->manager
->duids_requesting_uuid
)
738 set_remove(network
->manager
->duids_requesting_uuid
, &network
->duid
);
742 free(network
->dhcp_server_timezone
);
744 for (sd_dhcp_lease_server_type t
= 0; t
< _SD_DHCP_LEASE_SERVER_TYPE_MAX
; t
++)
745 free(network
->dhcp_server_emit
[t
].addresses
);
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_consume(&n
->dnssec_negative_trust_anchors
, &dns_name_hash_ops
, TAKE_PTR(w
));
1280 int config_parse_ntp(
1282 const char *filename
,
1284 const char *section
,
1285 unsigned section_line
,
1299 if (isempty(rvalue
)) {
1305 _cleanup_free_
char *w
= NULL
;
1307 r
= extract_first_word(&rvalue
, &w
, NULL
, 0);
1311 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1312 "Failed to extract NTP server name, ignoring: %s", rvalue
);
1318 r
= dns_name_is_valid_or_address(w
);
1320 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1321 "%s is not a valid domain name or IP address, ignoring.", w
);
1325 if (strv_length(*l
) > MAX_NTP_SERVERS
) {
1326 log_syntax(unit
, LOG_WARNING
, filename
, line
, 0,
1327 "More than %u NTP servers specified, ignoring \"%s\" and any subsequent entries.",
1328 MAX_NTP_SERVERS
, w
);
1332 r
= strv_consume(l
, TAKE_PTR(w
));
1340 int config_parse_required_for_online(
1342 const char *filename
,
1344 const char *section
,
1345 unsigned section_line
,
1352 Network
*network
= data
;
1353 LinkOperationalStateRange range
;
1354 bool required
= true;
1357 if (isempty(rvalue
)) {
1358 network
->required_for_online
= true;
1359 network
->required_operstate_for_online
= LINK_OPERSTATE_RANGE_DEFAULT
;
1363 r
= parse_operational_state_range(rvalue
, &range
);
1365 r
= parse_boolean(rvalue
);
1367 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1368 "Failed to parse %s= setting, ignoring assignment: %s",
1374 range
= LINK_OPERSTATE_RANGE_DEFAULT
;
1377 network
->required_for_online
= required
;
1378 network
->required_operstate_for_online
= range
;
1383 DEFINE_CONFIG_PARSE_ENUM(config_parse_keep_configuration
, keep_configuration
, KeepConfiguration
,
1384 "Failed to parse KeepConfiguration= setting");
1386 static const char* const keep_configuration_table
[_KEEP_CONFIGURATION_MAX
] = {
1387 [KEEP_CONFIGURATION_NO
] = "no",
1388 [KEEP_CONFIGURATION_DHCP_ON_STOP
] = "dhcp-on-stop",
1389 [KEEP_CONFIGURATION_DHCP
] = "dhcp",
1390 [KEEP_CONFIGURATION_STATIC
] = "static",
1391 [KEEP_CONFIGURATION_YES
] = "yes",
1394 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(keep_configuration
, KeepConfiguration
, KEEP_CONFIGURATION_YES
);