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"
516 "FairQueueingControlledDelay\0"
517 "GenericRandomEarlyDetection\0"
518 "HeavyHitterFilter\0"
519 "HierarchyTokenBucket\0"
520 "HierarchyTokenBucketClass\0"
526 "QuickFairQueueing\0"
527 "QuickFairQueueingClass\0"
528 "StochasticFairBlue\0"
529 "StochasticFairnessQueueing\0"
530 "TokenBucketFilter\0"
531 "TrivialLinkEqualizer\0",
532 config_item_perf_lookup
, network_network_gperf_lookup
,
535 &network
->timestamp
);
539 network_apply_anonymize_if_set(network
);
541 r
= network_add_ipv4ll_route(network
);
543 log_warning_errno(r
, "%s: Failed to add IPv4LL route, ignoring: %m", network
->filename
);
545 r
= network_add_default_route_on_device(network
);
547 log_warning_errno(r
, "%s: Failed to add default route on device, ignoring: %m",
550 if (network_verify(network
) < 0)
551 /* Ignore .network files that do not match the conditions. */
554 r
= ordered_hashmap_ensure_allocated(networks
, &string_hash_ops
);
558 r
= ordered_hashmap_put(*networks
, network
->name
, network
);
566 int network_load(Manager
*manager
, OrderedHashmap
**networks
) {
567 _cleanup_strv_free_
char **files
= NULL
;
573 ordered_hashmap_clear_with_destructor(*networks
, network_unref
);
575 r
= conf_files_list_strv(&files
, ".network", NULL
, 0, NETWORK_DIRS
);
577 return log_error_errno(r
, "Failed to enumerate network files: %m");
579 STRV_FOREACH(f
, files
) {
580 r
= network_load_one(manager
, networks
, *f
);
582 log_error_errno(r
, "Failed to load %s, ignoring: %m", *f
);
588 int network_reload(Manager
*manager
) {
589 OrderedHashmap
*new_networks
= NULL
;
596 r
= network_load(manager
, &new_networks
);
600 ORDERED_HASHMAP_FOREACH(n
, new_networks
, i
) {
601 r
= network_get_by_name(manager
, n
->name
, &old
);
603 continue; /* The .network file is new. */
605 if (n
->timestamp
!= old
->timestamp
)
606 continue; /* The .network file is modified. */
608 if (!streq(n
->filename
, old
->filename
))
611 r
= ordered_hashmap_replace(new_networks
, old
->name
, old
);
619 ordered_hashmap_free_with_destructor(manager
->networks
, network_unref
);
620 manager
->networks
= new_networks
;
625 ordered_hashmap_free_with_destructor(new_networks
, network_unref
);
630 static Network
*network_free(Network
*network
) {
631 IPv6ProxyNDPAddress
*ipv6_proxy_ndp_address
;
632 RoutePrefix
*route_prefix
;
633 RoutingPolicyRule
*rule
;
645 free(network
->filename
);
647 set_free_free(network
->match_mac
);
648 set_free_free(network
->match_permanent_mac
);
649 strv_free(network
->match_path
);
650 strv_free(network
->match_driver
);
651 strv_free(network
->match_type
);
652 strv_free(network
->match_name
);
653 strv_free(network
->match_property
);
654 strv_free(network
->match_wlan_iftype
);
655 strv_free(network
->match_ssid
);
656 set_free_free(network
->match_bssid
);
657 condition_free_list(network
->conditions
);
659 free(network
->description
);
660 free(network
->dhcp_vendor_class_identifier
);
661 free(network
->dhcp_mudurl
);
662 strv_free(network
->dhcp_user_class
);
663 free(network
->dhcp_hostname
);
664 set_free(network
->dhcp_black_listed_ip
);
665 set_free(network
->dhcp_request_options
);
666 set_free(network
->dhcp6_request_options
);
668 free(network
->dhcp6_mudurl
);
669 strv_free(network
->dhcp6_user_class
);
670 strv_free(network
->dhcp6_vendor_class
);
672 if (network
->dhcp_acd
)
673 sd_ipv4acd_unref(network
->dhcp_acd
);
675 strv_free(network
->ntp
);
677 ordered_set_free_free(network
->search_domains
);
678 ordered_set_free_free(network
->route_domains
);
679 strv_free(network
->bind_carrier
);
681 ordered_set_free_free(network
->router_search_domains
);
682 free(network
->router_dns
);
683 set_free_free(network
->ndisc_black_listed_prefix
);
685 free(network
->bridge_name
);
686 free(network
->bond_name
);
687 free(network
->vrf_name
);
688 hashmap_free_free_key(network
->stacked_netdev_names
);
689 netdev_unref(network
->bridge
);
690 netdev_unref(network
->bond
);
691 netdev_unref(network
->vrf
);
692 hashmap_free_with_destructor(network
->stacked_netdevs
, netdev_unref
);
694 while ((route
= network
->static_routes
))
697 while ((nexthop
= network
->static_nexthops
))
698 nexthop_free(nexthop
);
700 while ((address
= network
->static_addresses
))
701 address_free(address
);
703 while ((fdb_entry
= network
->static_fdb_entries
))
704 fdb_entry_free(fdb_entry
);
706 while ((ipv6_proxy_ndp_address
= network
->ipv6_proxy_ndp_addresses
))
707 ipv6_proxy_ndp_address_free(ipv6_proxy_ndp_address
);
709 while ((neighbor
= network
->neighbors
))
710 neighbor_free(neighbor
);
712 while ((label
= network
->address_labels
))
713 address_label_free(label
);
715 while ((prefix
= network
->static_prefixes
))
718 while ((route_prefix
= network
->static_route_prefixes
))
719 route_prefix_free(route_prefix
);
721 while ((rule
= network
->rules
))
722 routing_policy_rule_free(rule
);
724 hashmap_free(network
->addresses_by_section
);
725 hashmap_free(network
->routes_by_section
);
726 hashmap_free(network
->nexthops_by_section
);
727 hashmap_free(network
->fdb_entries_by_section
);
728 hashmap_free(network
->neighbors_by_section
);
729 hashmap_free(network
->address_labels_by_section
);
730 hashmap_free(network
->prefixes_by_section
);
731 hashmap_free(network
->route_prefixes_by_section
);
732 hashmap_free(network
->rules_by_section
);
733 ordered_hashmap_free_with_destructor(network
->tc_by_section
, traffic_control_free
);
735 if (network
->manager
&&
736 network
->manager
->duids_requesting_uuid
)
737 set_remove(network
->manager
->duids_requesting_uuid
, &network
->duid
);
741 free(network
->dhcp_server_timezone
);
743 for (sd_dhcp_lease_server_type t
= 0; t
< _SD_DHCP_LEASE_SERVER_TYPE_MAX
; t
++)
744 free(network
->dhcp_server_emit
[t
].addresses
);
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
);
755 ordered_hashmap_free(network
->dhcp6_client_send_options
);
756 ordered_hashmap_free(network
->dhcp6_client_send_vendor_options
);
758 return mfree(network
);
761 DEFINE_TRIVIAL_REF_UNREF_FUNC(Network
, network
, network_free
);
763 int network_get_by_name(Manager
*manager
, const char *name
, Network
**ret
) {
770 network
= ordered_hashmap_get(manager
->networks
, name
);
779 int network_get(Manager
*manager
, unsigned short iftype
, sd_device
*device
,
780 const char *ifname
, char * const *alternative_names
, const char *driver
,
781 const struct ether_addr
*mac
, const struct ether_addr
*permanent_mac
,
782 enum nl80211_iftype wlan_iftype
, const char *ssid
, const struct ether_addr
*bssid
,
790 ORDERED_HASHMAP_FOREACH(network
, manager
->networks
, i
)
791 if (net_match_config(network
->match_mac
, network
->match_permanent_mac
,
792 network
->match_path
, network
->match_driver
,
793 network
->match_type
, network
->match_name
, network
->match_property
,
794 network
->match_wlan_iftype
, network
->match_ssid
, network
->match_bssid
,
795 device
, mac
, permanent_mac
, driver
, iftype
,
796 ifname
, alternative_names
, wlan_iftype
, ssid
, bssid
)) {
797 if (network
->match_name
&& device
) {
799 uint8_t name_assign_type
= NET_NAME_UNKNOWN
;
801 if (sd_device_get_sysattr_value(device
, "name_assign_type", &attr
) >= 0)
802 (void) safe_atou8(attr
, &name_assign_type
);
804 if (name_assign_type
== NET_NAME_ENUM
)
805 log_warning("%s: found matching network '%s', based on potentially unpredictable ifname",
806 ifname
, network
->filename
);
808 log_debug("%s: found matching network '%s'", ifname
, network
->filename
);
810 log_debug("%s: found matching network '%s'", ifname
, network
->filename
);
821 int network_apply(Network
*network
, Link
*link
) {
825 link
->network
= network_ref(network
);
827 if (network
->n_dns
> 0 ||
828 !strv_isempty(network
->ntp
) ||
829 !ordered_set_isempty(network
->search_domains
) ||
830 !ordered_set_isempty(network
->route_domains
))
836 bool network_has_static_ipv6_configurations(Network
*network
) {
844 LIST_FOREACH(addresses
, address
, network
->static_addresses
)
845 if (address
->family
== AF_INET6
)
848 LIST_FOREACH(routes
, route
, network
->static_routes
)
849 if (route
->family
== AF_INET6
)
852 LIST_FOREACH(static_fdb_entries
, fdb
, network
->static_fdb_entries
)
853 if (fdb
->family
== AF_INET6
)
856 LIST_FOREACH(neighbors
, neighbor
, network
->neighbors
)
857 if (neighbor
->family
== AF_INET6
)
860 if (!LIST_IS_EMPTY(network
->address_labels
))
863 if (!LIST_IS_EMPTY(network
->static_prefixes
))
869 int config_parse_stacked_netdev(const char *unit
,
870 const char *filename
,
873 unsigned section_line
,
879 _cleanup_free_
char *name
= NULL
;
880 NetDevKind kind
= ltype
;
889 NETDEV_KIND_VLAN
, NETDEV_KIND_MACVLAN
, NETDEV_KIND_MACVTAP
,
890 NETDEV_KIND_IPVLAN
, NETDEV_KIND_IPVTAP
, NETDEV_KIND_VXLAN
,
891 NETDEV_KIND_L2TP
, NETDEV_KIND_MACSEC
, _NETDEV_KIND_TUNNEL
,
894 if (!ifname_valid(rvalue
)) {
895 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
896 "Invalid netdev name in %s=, ignoring assignment: %s", lvalue
, rvalue
);
900 name
= strdup(rvalue
);
904 r
= hashmap_ensure_allocated(h
, &string_hash_ops
);
908 r
= hashmap_put(*h
, name
, INT_TO_PTR(kind
));
910 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
911 "Cannot add NetDev '%s' to network, ignoring assignment: %m", name
);
913 log_syntax(unit
, LOG_DEBUG
, filename
, line
, r
,
914 "NetDev '%s' specified twice, ignoring.", name
);
921 int config_parse_domains(
923 const char *filename
,
926 unsigned section_line
,
941 if (isempty(rvalue
)) {
942 n
->search_domains
= ordered_set_free_free(n
->search_domains
);
943 n
->route_domains
= ordered_set_free_free(n
->route_domains
);
949 _cleanup_free_
char *w
= NULL
, *normalized
= NULL
;
953 r
= extract_first_word(&p
, &w
, NULL
, 0);
955 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
956 "Failed to extract search or route domain, ignoring: %s", rvalue
);
962 is_route
= w
[0] == '~';
963 domain
= is_route
? w
+ 1 : w
;
965 if (dns_name_is_root(domain
) || streq(domain
, "*")) {
966 /* If the root domain appears as is, or the special token "*" is found, we'll
967 * consider this as routing domain, unconditionally. */
969 domain
= "."; /* make sure we don't allow empty strings, thus write the root
972 r
= dns_name_normalize(domain
, 0, &normalized
);
974 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
975 "'%s' is not a valid domain name, ignoring.", domain
);
981 if (is_localhost(domain
)) {
982 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
983 "'localhost' domain may not be configured as search or route domain, ignoring assignment: %s",
989 OrderedSet
**set
= is_route
? &n
->route_domains
: &n
->search_domains
;
990 r
= ordered_set_ensure_allocated(set
, &string_hash_ops
);
994 r
= ordered_set_put_strdup(*set
, domain
);
1002 int config_parse_ipv6token(
1004 const char *filename
,
1006 const char *section
,
1007 unsigned section_line
,
1014 union in_addr_union buffer
;
1015 struct in6_addr
*token
= data
;
1023 r
= in_addr_from_string(AF_INET6
, rvalue
, &buffer
);
1025 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1026 "Failed to parse IPv6 token, ignoring: %s", rvalue
);
1030 if (in_addr_is_null(AF_INET6
, &buffer
)) {
1031 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1032 "IPv6 token cannot be the ANY address, ignoring: %s", rvalue
);
1036 if ((buffer
.in6
.s6_addr32
[0] | buffer
.in6
.s6_addr32
[1]) != 0) {
1037 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1038 "IPv6 token cannot be longer than 64 bits, ignoring: %s", rvalue
);
1042 *token
= buffer
.in6
;
1047 static const char* const ipv6_privacy_extensions_table
[_IPV6_PRIVACY_EXTENSIONS_MAX
] = {
1048 [IPV6_PRIVACY_EXTENSIONS_NO
] = "no",
1049 [IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC
] = "prefer-public",
1050 [IPV6_PRIVACY_EXTENSIONS_YES
] = "yes",
1053 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(ipv6_privacy_extensions
, IPv6PrivacyExtensions
,
1054 IPV6_PRIVACY_EXTENSIONS_YES
);
1056 int config_parse_ipv6_privacy_extensions(
1058 const char *filename
,
1060 const char *section
,
1061 unsigned section_line
,
1068 IPv6PrivacyExtensions s
, *ipv6_privacy_extensions
= data
;
1073 assert(ipv6_privacy_extensions
);
1075 s
= ipv6_privacy_extensions_from_string(rvalue
);
1077 if (streq(rvalue
, "kernel"))
1078 s
= _IPV6_PRIVACY_EXTENSIONS_INVALID
;
1080 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1081 "Failed to parse IPv6 privacy extensions option, ignoring: %s", rvalue
);
1086 *ipv6_privacy_extensions
= s
;
1091 int config_parse_hostname(
1093 const char *filename
,
1095 const char *section
,
1096 unsigned section_line
,
1103 _cleanup_free_
char *hn
= NULL
;
1104 char **hostname
= data
;
1111 r
= config_parse_string(unit
, filename
, line
, section
, section_line
, lvalue
, ltype
, rvalue
, &hn
, userdata
);
1115 if (!hostname_is_valid(hn
, false)) {
1116 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1117 "Hostname is not valid, ignoring assignment: %s", rvalue
);
1121 r
= dns_name_is_valid(hn
);
1123 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1124 "Failed to check validity of hostname '%s', ignoring assignment: %m", rvalue
);
1128 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1129 "Hostname is not a valid DNS domain name, ignoring assignment: %s", rvalue
);
1133 return free_and_replace(*hostname
, hn
);
1136 int config_parse_timezone(
1138 const char *filename
,
1140 const char *section
,
1141 unsigned section_line
,
1148 _cleanup_free_
char *tz
= NULL
;
1149 char **datap
= data
;
1156 r
= config_parse_string(unit
, filename
, line
, section
, section_line
, lvalue
, ltype
, rvalue
, &tz
, userdata
);
1160 if (!timezone_is_valid(tz
, LOG_ERR
)) {
1161 log_syntax(unit
, LOG_ERR
, filename
, line
, 0,
1162 "Timezone is not valid, ignoring assignment: %s", rvalue
);
1166 return free_and_replace(*datap
, tz
);
1169 int config_parse_dns(
1171 const char *filename
,
1173 const char *section
,
1174 unsigned section_line
,
1181 Network
*n
= userdata
;
1189 _cleanup_free_
char *w
= NULL
;
1190 union in_addr_union a
;
1191 struct in_addr_data
*m
;
1194 r
= extract_first_word(&rvalue
, &w
, NULL
, 0);
1198 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1199 "Invalid syntax, ignoring: %s", rvalue
);
1205 r
= in_addr_from_string_auto(w
, &family
, &a
);
1207 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1208 "Failed to parse dns server address, ignoring: %s", w
);
1212 m
= reallocarray(n
->dns
, n
->n_dns
+ 1, sizeof(struct in_addr_data
));
1216 m
[n
->n_dns
++] = (struct in_addr_data
) {
1227 int config_parse_dnssec_negative_trust_anchors(
1229 const char *filename
,
1231 const char *section
,
1232 unsigned section_line
,
1239 const char *p
= rvalue
;
1247 if (isempty(rvalue
)) {
1248 n
->dnssec_negative_trust_anchors
= set_free_free(n
->dnssec_negative_trust_anchors
);
1253 _cleanup_free_
char *w
= NULL
;
1255 r
= extract_first_word(&p
, &w
, NULL
, 0);
1257 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1258 "Failed to extract negative trust anchor domain, ignoring: %s", rvalue
);
1264 r
= dns_name_is_valid(w
);
1266 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1267 "%s is not a valid domain name, ignoring.", w
);
1271 r
= set_ensure_allocated(&n
->dnssec_negative_trust_anchors
, &dns_name_hash_ops
);
1275 r
= set_put(n
->dnssec_negative_trust_anchors
, w
);
1285 int config_parse_ntp(
1287 const char *filename
,
1289 const char *section
,
1290 unsigned section_line
,
1304 if (isempty(rvalue
)) {
1310 _cleanup_free_
char *w
= NULL
;
1312 r
= extract_first_word(&rvalue
, &w
, NULL
, 0);
1316 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1317 "Failed to extract NTP server name, ignoring: %s", rvalue
);
1323 r
= dns_name_is_valid_or_address(w
);
1325 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1326 "%s is not a valid domain name or IP address, ignoring.", w
);
1330 if (strv_length(*l
) > MAX_NTP_SERVERS
) {
1331 log_syntax(unit
, LOG_WARNING
, filename
, line
, 0,
1332 "More than %u NTP servers specified, ignoring \"%s\" and any subsequent entries.",
1333 MAX_NTP_SERVERS
, w
);
1337 r
= strv_consume(l
, TAKE_PTR(w
));
1345 int config_parse_required_for_online(
1347 const char *filename
,
1349 const char *section
,
1350 unsigned section_line
,
1357 Network
*network
= data
;
1358 LinkOperationalStateRange range
;
1359 bool required
= true;
1362 if (isempty(rvalue
)) {
1363 network
->required_for_online
= true;
1364 network
->required_operstate_for_online
= LINK_OPERSTATE_RANGE_DEFAULT
;
1368 r
= parse_operational_state_range(rvalue
, &range
);
1370 r
= parse_boolean(rvalue
);
1372 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
1373 "Failed to parse %s= setting, ignoring assignment: %s",
1379 range
= LINK_OPERSTATE_RANGE_DEFAULT
;
1382 network
->required_for_online
= required
;
1383 network
->required_operstate_for_online
= range
;
1388 DEFINE_CONFIG_PARSE_ENUM(config_parse_keep_configuration
, keep_configuration
, KeepConfiguration
,
1389 "Failed to parse KeepConfiguration= setting");
1391 static const char* const keep_configuration_table
[_KEEP_CONFIGURATION_MAX
] = {
1392 [KEEP_CONFIGURATION_NO
] = "no",
1393 [KEEP_CONFIGURATION_DHCP_ON_STOP
] = "dhcp-on-stop",
1394 [KEEP_CONFIGURATION_DHCP
] = "dhcp",
1395 [KEEP_CONFIGURATION_STATIC
] = "static",
1396 [KEEP_CONFIGURATION_YES
] = "yes",
1399 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(keep_configuration
, KeepConfiguration
, KEEP_CONFIGURATION_YES
);