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-rw-r--r--src/network/networkd-network.c1335
1 files changed, 1335 insertions, 0 deletions
diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c
new file mode 100644
index 0000000..799da2d
--- /dev/null
+++ b/src/network/networkd-network.c
@@ -0,0 +1,1335 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <net/if.h>
+#include <netinet/in.h>
+#include <linux/netdevice.h>
+#include <unistd.h>
+
+#include "alloc-util.h"
+#include "conf-files.h"
+#include "conf-parser.h"
+#include "dns-domain.h"
+#include "fd-util.h"
+#include "hostname-util.h"
+#include "in-addr-util.h"
+#include "net-condition.h"
+#include "netdev/macvlan.h"
+#include "networkd-address-label.h"
+#include "networkd-address.h"
+#include "networkd-bridge-fdb.h"
+#include "networkd-bridge-mdb.h"
+#include "networkd-dhcp-common.h"
+#include "networkd-dhcp-server-static-lease.h"
+#include "networkd-dhcp-server.h"
+#include "networkd-ipv6-proxy-ndp.h"
+#include "networkd-manager.h"
+#include "networkd-ndisc.h"
+#include "networkd-neighbor.h"
+#include "networkd-network.h"
+#include "networkd-nexthop.h"
+#include "networkd-radv.h"
+#include "networkd-route.h"
+#include "networkd-routing-policy-rule.h"
+#include "networkd-sriov.h"
+#include "parse-util.h"
+#include "path-lookup.h"
+#include "qdisc.h"
+#include "radv-internal.h"
+#include "set.h"
+#include "socket-util.h"
+#include "stat-util.h"
+#include "string-table.h"
+#include "string-util.h"
+#include "strv.h"
+#include "tclass.h"
+#include "util.h"
+
+/* Let's assume that anything above this number is a user misconfiguration. */
+#define MAX_NTP_SERVERS 128U
+
+static int network_resolve_netdev_one(Network *network, const char *name, NetDevKind kind, NetDev **ret) {
+ const char *kind_string;
+ NetDev *netdev;
+ int r;
+
+ /* For test-networkd-conf, the check must be earlier than the assertions. */
+ if (!name)
+ return 0;
+
+ assert(network);
+ assert(network->manager);
+ assert(network->filename);
+ assert(ret);
+
+ if (kind == _NETDEV_KIND_TUNNEL)
+ kind_string = "tunnel";
+ else {
+ kind_string = netdev_kind_to_string(kind);
+ if (!kind_string)
+ return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
+ "%s: Invalid NetDev kind of %s, ignoring assignment.",
+ network->filename, name);
+ }
+
+ r = netdev_get(network->manager, name, &netdev);
+ if (r < 0)
+ return log_warning_errno(r, "%s: %s NetDev could not be found, ignoring assignment.",
+ network->filename, name);
+
+ if (netdev->kind != kind && !(kind == _NETDEV_KIND_TUNNEL &&
+ IN_SET(netdev->kind,
+ NETDEV_KIND_ERSPAN,
+ NETDEV_KIND_GRE,
+ NETDEV_KIND_GRETAP,
+ NETDEV_KIND_IP6GRE,
+ NETDEV_KIND_IP6GRETAP,
+ NETDEV_KIND_IP6TNL,
+ NETDEV_KIND_IPIP,
+ NETDEV_KIND_SIT,
+ NETDEV_KIND_VTI,
+ NETDEV_KIND_VTI6)))
+ return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
+ "%s: NetDev %s is not a %s, ignoring assignment",
+ network->filename, name, kind_string);
+
+ *ret = netdev_ref(netdev);
+ return 1;
+}
+
+static int network_resolve_stacked_netdevs(Network *network) {
+ void *name, *kind;
+ int r;
+
+ assert(network);
+
+ HASHMAP_FOREACH_KEY(kind, name, network->stacked_netdev_names) {
+ _cleanup_(netdev_unrefp) NetDev *netdev = NULL;
+
+ if (network_resolve_netdev_one(network, name, PTR_TO_INT(kind), &netdev) <= 0)
+ continue;
+
+ r = hashmap_ensure_put(&network->stacked_netdevs, &string_hash_ops, netdev->ifname, netdev);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0)
+ log_warning_errno(r, "%s: Failed to add NetDev '%s' to network, ignoring: %m",
+ network->filename, (const char *) name);
+
+ netdev = NULL;
+ }
+
+ return 0;
+}
+
+int network_verify(Network *network) {
+ int r;
+
+ assert(network);
+ assert(network->manager);
+ assert(network->filename);
+
+ if (net_match_is_empty(&network->match) && !network->conditions)
+ return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
+ "%s: No valid settings found in the [Match] section, ignoring file. "
+ "To match all interfaces, add Name=* in the [Match] section.",
+ network->filename);
+
+ /* skip out early if configuration does not match the environment */
+ if (!condition_test_list(network->conditions, environ, NULL, NULL, NULL))
+ return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
+ "%s: Conditions in the file do not match the system environment, skipping.",
+ network->filename);
+
+ if (network->keep_master) {
+ if (network->batadv_name)
+ log_warning("%s: BatmanAdvanced= set with KeepMaster= enabled, ignoring BatmanAdvanced=.",
+ network->filename);
+ if (network->bond_name)
+ log_warning("%s: Bond= set with KeepMaster= enabled, ignoring Bond=.",
+ network->filename);
+ if (network->bridge_name)
+ log_warning("%s: Bridge= set with KeepMaster= enabled, ignoring Bridge=.",
+ network->filename);
+ if (network->vrf_name)
+ log_warning("%s: VRF= set with KeepMaster= enabled, ignoring VRF=.",
+ network->filename);
+
+ network->batadv_name = mfree(network->batadv_name);
+ network->bond_name = mfree(network->bond_name);
+ network->bridge_name = mfree(network->bridge_name);
+ network->vrf_name = mfree(network->vrf_name);
+ }
+
+ (void) network_resolve_netdev_one(network, network->batadv_name, NETDEV_KIND_BATADV, &network->batadv);
+ (void) network_resolve_netdev_one(network, network->bond_name, NETDEV_KIND_BOND, &network->bond);
+ (void) network_resolve_netdev_one(network, network->bridge_name, NETDEV_KIND_BRIDGE, &network->bridge);
+ (void) network_resolve_netdev_one(network, network->vrf_name, NETDEV_KIND_VRF, &network->vrf);
+ r = network_resolve_stacked_netdevs(network);
+ if (r < 0)
+ return r;
+
+ /* Free unnecessary entries. */
+ network->batadv_name = mfree(network->batadv_name);
+ network->bond_name = mfree(network->bond_name);
+ network->bridge_name = mfree(network->bridge_name);
+ network->vrf_name = mfree(network->vrf_name);
+ network->stacked_netdev_names = hashmap_free_free_key(network->stacked_netdev_names);
+
+ if (network->bond) {
+ /* Bonding slave does not support addressing. */
+ if (network->link_local >= 0 && network->link_local != ADDRESS_FAMILY_NO) {
+ log_warning("%s: Cannot enable LinkLocalAddressing= when Bond= is specified, disabling LinkLocalAddressing=.",
+ network->filename);
+ network->link_local = ADDRESS_FAMILY_NO;
+ }
+ if (network->dhcp_server) {
+ log_warning("%s: Cannot enable DHCPServer= when Bond= is specified, disabling DHCPServer=.",
+ network->filename);
+ network->dhcp_server = false;
+ }
+ if (!ordered_hashmap_isempty(network->addresses_by_section))
+ log_warning("%s: Cannot set addresses when Bond= is specified, ignoring addresses.",
+ network->filename);
+ if (!hashmap_isempty(network->routes_by_section))
+ log_warning("%s: Cannot set routes when Bond= is specified, ignoring routes.",
+ network->filename);
+
+ network->addresses_by_section = ordered_hashmap_free_with_destructor(network->addresses_by_section, address_free);
+ network->routes_by_section = hashmap_free_with_destructor(network->routes_by_section, route_free);
+ }
+
+ if (network->link_local < 0) {
+ network->link_local = ADDRESS_FAMILY_IPV6;
+
+ if (network->keep_master || network->bridge)
+ network->link_local = ADDRESS_FAMILY_NO;
+ else {
+ NetDev *netdev;
+
+ HASHMAP_FOREACH(netdev, network->stacked_netdevs) {
+ MacVlan *m;
+
+ if (netdev->kind == NETDEV_KIND_MACVLAN)
+ m = MACVLAN(netdev);
+ else if (netdev->kind == NETDEV_KIND_MACVTAP)
+ m = MACVTAP(netdev);
+ else
+ continue;
+
+ assert(m);
+
+ if (m->mode == NETDEV_MACVLAN_MODE_PASSTHRU)
+ network->link_local = ADDRESS_FAMILY_NO;
+
+ /* There won't be a passthru MACVLAN/MACVTAP if there's already one in another mode */
+ break;
+ }
+ }
+ }
+
+ if (network->ipv6ll_address_gen_mode == IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_NONE)
+ SET_FLAG(network->link_local, ADDRESS_FAMILY_IPV6, false);
+
+ if (in6_addr_is_set(&network->ipv6ll_stable_secret) &&
+ network->ipv6ll_address_gen_mode < 0)
+ network->ipv6ll_address_gen_mode = IPV6_LINK_LOCAL_ADDRESSS_GEN_MODE_STABLE_PRIVACY;
+
+ /* IPMasquerade implies IPForward */
+ network->ip_forward |= network->ip_masquerade;
+
+ network_adjust_ipv6_proxy_ndp(network);
+ network_adjust_ipv6_accept_ra(network);
+ network_adjust_dhcp(network);
+ network_adjust_radv(network);
+ network_adjust_bridge_vlan(network);
+
+ if (network->mtu > 0 && network->dhcp_use_mtu) {
+ log_warning("%s: MTUBytes= in [Link] section and UseMTU= in [DHCP] section are set. "
+ "Disabling UseMTU=.", network->filename);
+ network->dhcp_use_mtu = false;
+ }
+
+ if (network->dhcp_critical >= 0) {
+ if (network->keep_configuration >= 0) {
+ if (network->manager->keep_configuration < 0)
+ log_warning("%s: Both KeepConfiguration= and deprecated CriticalConnection= are set. "
+ "Ignoring CriticalConnection=.", network->filename);
+ } else if (network->dhcp_critical)
+ /* CriticalConnection=yes also preserve foreign static configurations. */
+ network->keep_configuration = KEEP_CONFIGURATION_YES;
+ else
+ network->keep_configuration = KEEP_CONFIGURATION_NO;
+ }
+
+ if (!strv_isempty(network->bind_carrier)) {
+ if (!IN_SET(network->activation_policy, _ACTIVATION_POLICY_INVALID, ACTIVATION_POLICY_BOUND))
+ log_warning("%s: ActivationPolicy=bound is required with BindCarrier=. "
+ "Setting ActivationPolicy=bound.", network->filename);
+ network->activation_policy = ACTIVATION_POLICY_BOUND;
+ } else if (network->activation_policy == ACTIVATION_POLICY_BOUND) {
+ log_warning("%s: ActivationPolicy=bound requires BindCarrier=. "
+ "Ignoring ActivationPolicy=bound.", network->filename);
+ network->activation_policy = ACTIVATION_POLICY_UP;
+ }
+
+ if (network->activation_policy == _ACTIVATION_POLICY_INVALID)
+ network->activation_policy = ACTIVATION_POLICY_UP;
+
+ if (network->activation_policy == ACTIVATION_POLICY_ALWAYS_UP) {
+ if (network->ignore_carrier_loss_set && network->ignore_carrier_loss_usec < USEC_INFINITY)
+ log_warning("%s: IgnoreCarrierLoss=no or finite timespan conflicts with ActivationPolicy=always-up. "
+ "Setting IgnoreCarrierLoss=yes.", network->filename);
+ network->ignore_carrier_loss_set = true;
+ network->ignore_carrier_loss_usec = USEC_INFINITY;
+ }
+
+ if (!network->ignore_carrier_loss_set) /* Set implied default. */
+ network->ignore_carrier_loss_usec = network->configure_without_carrier ? USEC_INFINITY : 0;
+
+ if (IN_SET(network->activation_policy, ACTIVATION_POLICY_DOWN, ACTIVATION_POLICY_ALWAYS_DOWN, ACTIVATION_POLICY_MANUAL)) {
+ if (network->required_for_online < 0 ||
+ (network->required_for_online == true && network->activation_policy == ACTIVATION_POLICY_ALWAYS_DOWN)) {
+ log_debug("%s: Setting RequiredForOnline=no because ActivationPolicy=%s.", network->filename,
+ activation_policy_to_string(network->activation_policy));
+ network->required_for_online = false;
+ } else if (network->required_for_online == true)
+ log_warning("%s: RequiredForOnline=yes and ActivationPolicy=%s, "
+ "this may cause a delay at boot.", network->filename,
+ activation_policy_to_string(network->activation_policy));
+ }
+
+ if (network->required_for_online < 0)
+ network->required_for_online = true;
+
+ if (network->keep_configuration < 0)
+ network->keep_configuration = KEEP_CONFIGURATION_NO;
+
+ if (network->ipv6_proxy_ndp == 0 && !set_isempty(network->ipv6_proxy_ndp_addresses)) {
+ log_warning("%s: IPv6ProxyNDP= is disabled. Ignoring IPv6ProxyNDPAddress=.", network->filename);
+ network->ipv6_proxy_ndp_addresses = set_free_free(network->ipv6_proxy_ndp_addresses);
+ }
+
+ r = network_drop_invalid_addresses(network);
+ if (r < 0)
+ return r; /* network_drop_invalid_addresses() logs internally. */
+ network_drop_invalid_routes(network);
+ network_drop_invalid_nexthops(network);
+ network_drop_invalid_bridge_fdb_entries(network);
+ network_drop_invalid_bridge_mdb_entries(network);
+ network_drop_invalid_neighbors(network);
+ network_drop_invalid_address_labels(network);
+ network_drop_invalid_prefixes(network);
+ network_drop_invalid_route_prefixes(network);
+ network_drop_invalid_routing_policy_rules(network);
+ network_drop_invalid_qdisc(network);
+ network_drop_invalid_tclass(network);
+ r = sr_iov_drop_invalid_sections(UINT32_MAX, network->sr_iov_by_section);
+ if (r < 0)
+ return r; /* sr_iov_drop_invalid_sections() logs internally. */
+ network_drop_invalid_static_leases(network);
+
+ network_adjust_dhcp_server(network);
+
+ return 0;
+}
+
+int network_load_one(Manager *manager, OrderedHashmap **networks, const char *filename) {
+ _cleanup_free_ char *fname = NULL, *name = NULL;
+ _cleanup_(network_unrefp) Network *network = NULL;
+ const char *dropin_dirname;
+ char *d;
+ int r;
+
+ assert(manager);
+ assert(filename);
+
+ r = null_or_empty_path(filename);
+ if (r < 0)
+ return log_warning_errno(r, "Failed to check if \"%s\" is empty: %m", filename);
+ if (r > 0) {
+ log_debug("Skipping empty file: %s", filename);
+ return 0;
+ }
+
+ fname = strdup(filename);
+ if (!fname)
+ return log_oom();
+
+ name = strdup(basename(filename));
+ if (!name)
+ return log_oom();
+
+ d = strrchr(name, '.');
+ if (!d)
+ return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid file name: %s", filename);
+
+ *d = '\0';
+
+ dropin_dirname = strjoina(name, ".network.d");
+
+ network = new(Network, 1);
+ if (!network)
+ return log_oom();
+
+ *network = (Network) {
+ .filename = TAKE_PTR(fname),
+ .name = TAKE_PTR(name),
+
+ .manager = manager,
+ .n_ref = 1,
+
+ .required_for_online = -1,
+ .required_operstate_for_online = LINK_OPERSTATE_RANGE_DEFAULT,
+ .activation_policy = _ACTIVATION_POLICY_INVALID,
+ .group = -1,
+ .arp = -1,
+ .multicast = -1,
+ .allmulticast = -1,
+ .promiscuous = -1,
+
+ .keep_configuration = manager->keep_configuration,
+
+ .dhcp_duid.type = _DUID_TYPE_INVALID,
+ .dhcp_critical = -1,
+ .dhcp_use_ntp = true,
+ .dhcp_routes_to_ntp = true,
+ .dhcp_use_sip = true,
+ .dhcp_use_dns = true,
+ .dhcp_routes_to_dns = true,
+ .dhcp_use_hostname = true,
+ .dhcp_use_routes = true,
+ .dhcp_use_gateway = -1,
+ .dhcp_send_hostname = true,
+ .dhcp_send_release = true,
+ .dhcp_route_metric = DHCP_ROUTE_METRIC,
+ .dhcp_client_identifier = _DHCP_CLIENT_ID_INVALID,
+ .dhcp_route_table = RT_TABLE_MAIN,
+ .dhcp_ip_service_type = -1,
+ .dhcp_broadcast = -1,
+
+ .dhcp6_use_address = true,
+ .dhcp6_use_pd_prefix = true,
+ .dhcp6_use_dns = true,
+ .dhcp6_use_hostname = true,
+ .dhcp6_use_ntp = true,
+ .dhcp6_use_rapid_commit = true,
+ .dhcp6_duid.type = _DUID_TYPE_INVALID,
+ .dhcp6_client_start_mode = _DHCP6_CLIENT_START_MODE_INVALID,
+
+ .dhcp_pd = -1,
+ .dhcp_pd_announce = true,
+ .dhcp_pd_assign = true,
+ .dhcp_pd_manage_temporary_address = true,
+ .dhcp_pd_subnet_id = -1,
+ .dhcp_pd_route_metric = DHCP6PD_ROUTE_METRIC,
+
+ .dhcp_server_bind_to_interface = true,
+ .dhcp_server_emit[SD_DHCP_LEASE_DNS].emit = true,
+ .dhcp_server_emit[SD_DHCP_LEASE_NTP].emit = true,
+ .dhcp_server_emit[SD_DHCP_LEASE_SIP].emit = true,
+ .dhcp_server_emit_router = true,
+ .dhcp_server_emit_timezone = true,
+
+ .router_lifetime_usec = RADV_DEFAULT_ROUTER_LIFETIME_USEC,
+ .router_dns_lifetime_usec = RADV_DEFAULT_VALID_LIFETIME_USEC,
+ .router_emit_dns = true,
+ .router_emit_domains = true,
+
+ .use_bpdu = -1,
+ .hairpin = -1,
+ .isolated = -1,
+ .fast_leave = -1,
+ .allow_port_to_be_root = -1,
+ .unicast_flood = -1,
+ .multicast_flood = -1,
+ .multicast_to_unicast = -1,
+ .neighbor_suppression = -1,
+ .learning = -1,
+ .bridge_proxy_arp = -1,
+ .bridge_proxy_arp_wifi = -1,
+ .priority = LINK_BRIDGE_PORT_PRIORITY_INVALID,
+ .multicast_router = _MULTICAST_ROUTER_INVALID,
+
+ .lldp_mode = LLDP_MODE_ROUTERS_ONLY,
+ .lldp_multicast_mode = _SD_LLDP_MULTICAST_MODE_INVALID,
+
+ .dns_default_route = -1,
+ .llmnr = RESOLVE_SUPPORT_YES,
+ .mdns = RESOLVE_SUPPORT_NO,
+ .dnssec_mode = _DNSSEC_MODE_INVALID,
+ .dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID,
+
+ /* If LinkLocalAddressing= is not set, then set to ADDRESS_FAMILY_IPV6 later. */
+ .link_local = _ADDRESS_FAMILY_INVALID,
+ .ipv6ll_address_gen_mode = _IPV6_LINK_LOCAL_ADDRESS_GEN_MODE_INVALID,
+
+ .ipv4_accept_local = -1,
+ .ipv4_route_localnet = -1,
+ .ipv6_privacy_extensions = IPV6_PRIVACY_EXTENSIONS_NO,
+ .ipv6_dad_transmits = -1,
+ .ipv6_hop_limit = -1,
+ .ipv6_proxy_ndp = -1,
+ .proxy_arp = -1,
+
+ .ipv6_accept_ra = -1,
+ .ipv6_accept_ra_use_dns = true,
+ .ipv6_accept_ra_use_gateway = true,
+ .ipv6_accept_ra_use_route_prefix = true,
+ .ipv6_accept_ra_use_autonomous_prefix = true,
+ .ipv6_accept_ra_use_onlink_prefix = true,
+ .ipv6_accept_ra_use_mtu = true,
+ .ipv6_accept_ra_route_table = RT_TABLE_MAIN,
+ .ipv6_accept_ra_route_metric = DHCP_ROUTE_METRIC,
+ .ipv6_accept_ra_start_dhcp6_client = IPV6_ACCEPT_RA_START_DHCP6_CLIENT_YES,
+
+ .can_termination = -1,
+
+ .ipoib_mode = _IP_OVER_INFINIBAND_MODE_INVALID,
+ .ipoib_umcast = -1,
+ };
+
+ r = config_parse_many(
+ STRV_MAKE_CONST(filename), NETWORK_DIRS, dropin_dirname,
+ "Match\0"
+ "Link\0"
+ "SR-IOV\0"
+ "Network\0"
+ "Address\0"
+ "Neighbor\0"
+ "IPv6AddressLabel\0"
+ "RoutingPolicyRule\0"
+ "Route\0"
+ "NextHop\0"
+ "DHCP\0" /* compat */
+ "DHCPv4\0"
+ "DHCPv6\0"
+ "DHCPv6PrefixDelegation\0" /* compat */
+ "DHCPPrefixDelegation\0"
+ "DHCPServer\0"
+ "DHCPServerStaticLease\0"
+ "IPv6AcceptRA\0"
+ "IPv6NDPProxyAddress\0"
+ "Bridge\0"
+ "BridgeFDB\0"
+ "BridgeMDB\0"
+ "BridgeVLAN\0"
+ "IPv6SendRA\0"
+ "IPv6PrefixDelegation\0"
+ "IPv6Prefix\0"
+ "IPv6RoutePrefix\0"
+ "LLDP\0"
+ "TrafficControlQueueingDiscipline\0"
+ "CAN\0"
+ "QDisc\0"
+ "BFIFO\0"
+ "CAKE\0"
+ "ControlledDelay\0"
+ "DeficitRoundRobinScheduler\0"
+ "DeficitRoundRobinSchedulerClass\0"
+ "EnhancedTransmissionSelection\0"
+ "FairQueueing\0"
+ "FairQueueingControlledDelay\0"
+ "FlowQueuePIE\0"
+ "GenericRandomEarlyDetection\0"
+ "HeavyHitterFilter\0"
+ "HierarchyTokenBucket\0"
+ "HierarchyTokenBucketClass\0"
+ "NetworkEmulator\0"
+ "PFIFO\0"
+ "PFIFOFast\0"
+ "PFIFOHeadDrop\0"
+ "PIE\0"
+ "QuickFairQueueing\0"
+ "QuickFairQueueingClass\0"
+ "StochasticFairBlue\0"
+ "StochasticFairnessQueueing\0"
+ "TokenBucketFilter\0"
+ "TrivialLinkEqualizer\0",
+ config_item_perf_lookup, network_network_gperf_lookup,
+ CONFIG_PARSE_WARN,
+ network,
+ &network->stats_by_path,
+ NULL);
+ if (r < 0)
+ return r; /* config_parse_many() logs internally. */
+
+ r = network_add_ipv4ll_route(network);
+ if (r < 0)
+ return log_warning_errno(r, "%s: Failed to add IPv4LL route: %m", network->filename);
+
+ r = network_add_default_route_on_device(network);
+ if (r < 0)
+ return log_warning_errno(r, "%s: Failed to add default route on device: %m",
+ network->filename);
+
+ r = network_verify(network);
+ if (r < 0)
+ return r; /* network_verify() logs internally. */
+
+ r = ordered_hashmap_ensure_put(networks, &string_hash_ops, network->name, network);
+ if (r < 0)
+ return log_warning_errno(r, "%s: Failed to store configuration into hashmap: %m", filename);
+
+ TAKE_PTR(network);
+ return 0;
+}
+
+int network_load(Manager *manager, OrderedHashmap **networks) {
+ _cleanup_strv_free_ char **files = NULL;
+ int r;
+
+ assert(manager);
+
+ ordered_hashmap_clear_with_destructor(*networks, network_unref);
+
+ r = conf_files_list_strv(&files, ".network", NULL, 0, NETWORK_DIRS);
+ if (r < 0)
+ return log_error_errno(r, "Failed to enumerate network files: %m");
+
+ STRV_FOREACH(f, files)
+ (void) network_load_one(manager, networks, *f);
+
+ return 0;
+}
+
+int network_reload(Manager *manager) {
+ OrderedHashmap *new_networks = NULL;
+ Network *n, *old;
+ int r;
+
+ assert(manager);
+
+ r = network_load(manager, &new_networks);
+ if (r < 0)
+ goto failure;
+
+ ORDERED_HASHMAP_FOREACH(n, new_networks) {
+ r = network_get_by_name(manager, n->name, &old);
+ if (r < 0) {
+ log_debug("Found new .network file: %s", n->filename);
+ continue;
+ }
+
+ if (!stats_by_path_equal(n->stats_by_path, old->stats_by_path)) {
+ log_debug("Found updated .network file: %s", n->filename);
+ continue;
+ }
+
+ r = ordered_hashmap_replace(new_networks, old->name, old);
+ if (r < 0)
+ goto failure;
+
+ network_ref(old);
+ network_unref(n);
+ }
+
+ ordered_hashmap_free_with_destructor(manager->networks, network_unref);
+ manager->networks = new_networks;
+
+ return manager_build_dhcp_pd_subnet_ids(manager);
+
+failure:
+ ordered_hashmap_free_with_destructor(new_networks, network_unref);
+
+ return r;
+}
+
+int manager_build_dhcp_pd_subnet_ids(Manager *manager) {
+ Network *n;
+ int r;
+
+ assert(manager);
+
+ set_clear(manager->dhcp_pd_subnet_ids);
+
+ ORDERED_HASHMAP_FOREACH(n, manager->networks) {
+ if (n->unmanaged)
+ continue;
+
+ if (!n->dhcp_pd)
+ continue;
+
+ if (n->dhcp_pd_subnet_id < 0)
+ continue;
+
+ r = set_ensure_put(&manager->dhcp_pd_subnet_ids, &uint64_hash_ops, &n->dhcp_pd_subnet_id);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static Network *network_free(Network *network) {
+ if (!network)
+ return NULL;
+
+ free(network->name);
+ free(network->filename);
+ free(network->description);
+ hashmap_free(network->stats_by_path);
+
+ /* conditions */
+ net_match_clear(&network->match);
+ condition_free_list(network->conditions);
+
+ /* link settings */
+ strv_free(network->bind_carrier);
+
+ /* NTP */
+ strv_free(network->ntp);
+
+ /* DNS */
+ for (unsigned i = 0; i < network->n_dns; i++)
+ in_addr_full_free(network->dns[i]);
+ free(network->dns);
+ ordered_set_free(network->search_domains);
+ ordered_set_free(network->route_domains);
+ set_free_free(network->dnssec_negative_trust_anchors);
+
+ /* DHCP server */
+ free(network->dhcp_server_relay_agent_circuit_id);
+ free(network->dhcp_server_relay_agent_remote_id);
+ free(network->dhcp_server_boot_server_name);
+ free(network->dhcp_server_boot_filename);
+ free(network->dhcp_server_timezone);
+ free(network->dhcp_server_uplink_name);
+ for (sd_dhcp_lease_server_type_t t = 0; t < _SD_DHCP_LEASE_SERVER_TYPE_MAX; t++)
+ free(network->dhcp_server_emit[t].addresses);
+ ordered_hashmap_free(network->dhcp_server_send_options);
+ ordered_hashmap_free(network->dhcp_server_send_vendor_options);
+
+ /* DHCP client */
+ free(network->dhcp_vendor_class_identifier);
+ free(network->dhcp_mudurl);
+ free(network->dhcp_hostname);
+ free(network->dhcp_label);
+ set_free(network->dhcp_deny_listed_ip);
+ set_free(network->dhcp_allow_listed_ip);
+ strv_free(network->dhcp_user_class);
+ set_free(network->dhcp_request_options);
+ ordered_hashmap_free(network->dhcp_client_send_options);
+ ordered_hashmap_free(network->dhcp_client_send_vendor_options);
+ free(network->dhcp_netlabel);
+
+ /* DHCPv6 client */
+ free(network->dhcp6_mudurl);
+ strv_free(network->dhcp6_user_class);
+ strv_free(network->dhcp6_vendor_class);
+ set_free(network->dhcp6_request_options);
+ ordered_hashmap_free(network->dhcp6_client_send_options);
+ ordered_hashmap_free(network->dhcp6_client_send_vendor_options);
+ free(network->dhcp6_netlabel);
+
+ /* DHCP PD */
+ free(network->dhcp_pd_uplink_name);
+ set_free(network->dhcp_pd_tokens);
+ free(network->dhcp_pd_netlabel);
+
+ /* Router advertisement */
+ ordered_set_free(network->router_search_domains);
+ free(network->router_dns);
+ free(network->router_uplink_name);
+
+ /* NDisc */
+ set_free(network->ndisc_deny_listed_router);
+ set_free(network->ndisc_allow_listed_router);
+ set_free(network->ndisc_deny_listed_prefix);
+ set_free(network->ndisc_allow_listed_prefix);
+ set_free(network->ndisc_deny_listed_route_prefix);
+ set_free(network->ndisc_allow_listed_route_prefix);
+ set_free(network->ndisc_tokens);
+ free(network->ndisc_netlabel);
+
+ /* LLDP */
+ free(network->lldp_mudurl);
+
+ /* netdev */
+ free(network->batadv_name);
+ free(network->bridge_name);
+ free(network->bond_name);
+ free(network->vrf_name);
+ hashmap_free_free_key(network->stacked_netdev_names);
+ netdev_unref(network->bridge);
+ netdev_unref(network->bond);
+ netdev_unref(network->vrf);
+ hashmap_free_with_destructor(network->stacked_netdevs, netdev_unref);
+
+ /* static configs */
+ set_free_free(network->ipv6_proxy_ndp_addresses);
+ ordered_hashmap_free_with_destructor(network->addresses_by_section, address_free);
+ hashmap_free_with_destructor(network->routes_by_section, route_free);
+ hashmap_free_with_destructor(network->nexthops_by_section, nexthop_free);
+ hashmap_free_with_destructor(network->bridge_fdb_entries_by_section, bridge_fdb_free);
+ hashmap_free_with_destructor(network->bridge_mdb_entries_by_section, bridge_mdb_free);
+ hashmap_free_with_destructor(network->neighbors_by_section, neighbor_free);
+ hashmap_free_with_destructor(network->address_labels_by_section, address_label_free);
+ hashmap_free_with_destructor(network->prefixes_by_section, prefix_free);
+ hashmap_free_with_destructor(network->route_prefixes_by_section, route_prefix_free);
+ hashmap_free_with_destructor(network->rules_by_section, routing_policy_rule_free);
+ hashmap_free_with_destructor(network->dhcp_static_leases_by_section, dhcp_static_lease_free);
+ ordered_hashmap_free_with_destructor(network->sr_iov_by_section, sr_iov_free);
+ hashmap_free_with_destructor(network->qdiscs_by_section, qdisc_free);
+ hashmap_free_with_destructor(network->tclasses_by_section, tclass_free);
+
+ return mfree(network);
+}
+
+DEFINE_TRIVIAL_REF_UNREF_FUNC(Network, network, network_free);
+
+int network_get_by_name(Manager *manager, const char *name, Network **ret) {
+ Network *network;
+
+ assert(manager);
+ assert(name);
+ assert(ret);
+
+ network = ordered_hashmap_get(manager->networks, name);
+ if (!network)
+ return -ENOENT;
+
+ *ret = network;
+
+ return 0;
+}
+
+bool network_has_static_ipv6_configurations(Network *network) {
+ Address *address;
+ Route *route;
+ BridgeFDB *fdb;
+ BridgeMDB *mdb;
+ Neighbor *neighbor;
+
+ assert(network);
+
+ ORDERED_HASHMAP_FOREACH(address, network->addresses_by_section)
+ if (address->family == AF_INET6)
+ return true;
+
+ HASHMAP_FOREACH(route, network->routes_by_section)
+ if (route->family == AF_INET6)
+ return true;
+
+ HASHMAP_FOREACH(fdb, network->bridge_fdb_entries_by_section)
+ if (fdb->family == AF_INET6)
+ return true;
+
+ HASHMAP_FOREACH(mdb, network->bridge_mdb_entries_by_section)
+ if (mdb->family == AF_INET6)
+ return true;
+
+ HASHMAP_FOREACH(neighbor, network->neighbors_by_section)
+ if (neighbor->family == AF_INET6)
+ return true;
+
+ if (!hashmap_isempty(network->address_labels_by_section))
+ return true;
+
+ if (!hashmap_isempty(network->prefixes_by_section))
+ return true;
+
+ if (!hashmap_isempty(network->route_prefixes_by_section))
+ return true;
+
+ return false;
+}
+
+int config_parse_stacked_netdev(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_free_ char *name = NULL;
+ NetDevKind kind = ltype;
+ Hashmap **h = ASSERT_PTR(data);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(IN_SET(kind,
+ NETDEV_KIND_IPOIB,
+ NETDEV_KIND_IPVLAN,
+ NETDEV_KIND_IPVTAP,
+ NETDEV_KIND_MACSEC,
+ NETDEV_KIND_MACVLAN,
+ NETDEV_KIND_MACVTAP,
+ NETDEV_KIND_VLAN,
+ NETDEV_KIND_VXLAN,
+ NETDEV_KIND_XFRM,
+ _NETDEV_KIND_TUNNEL));
+
+ if (!ifname_valid(rvalue)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Invalid netdev name in %s=, ignoring assignment: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ name = strdup(rvalue);
+ if (!name)
+ return log_oom();
+
+ r = hashmap_ensure_put(h, &string_hash_ops, name, INT_TO_PTR(kind));
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0)
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Cannot add NetDev '%s' to network, ignoring assignment: %m", name);
+ else if (r == 0)
+ log_syntax(unit, LOG_DEBUG, filename, line, r,
+ "NetDev '%s' specified twice, ignoring.", name);
+ else
+ TAKE_PTR(name);
+
+ return 0;
+}
+
+int config_parse_domains(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Network *n = ASSERT_PTR(userdata);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ n->search_domains = ordered_set_free(n->search_domains);
+ n->route_domains = ordered_set_free(n->route_domains);
+ return 0;
+ }
+
+ for (const char *p = rvalue;;) {
+ _cleanup_free_ char *w = NULL, *normalized = NULL;
+ const char *domain;
+ bool is_route;
+
+ r = extract_first_word(&p, &w, NULL, 0);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to extract search or route domain, ignoring: %s", rvalue);
+ return 0;
+ }
+ if (r == 0)
+ return 0;
+
+ is_route = w[0] == '~';
+ domain = is_route ? w + 1 : w;
+
+ if (dns_name_is_root(domain) || streq(domain, "*")) {
+ /* If the root domain appears as is, or the special token "*" is found, we'll
+ * consider this as routing domain, unconditionally. */
+ is_route = true;
+ domain = "."; /* make sure we don't allow empty strings, thus write the root
+ * domain as "." */
+ } else {
+ r = dns_name_normalize(domain, 0, &normalized);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "'%s' is not a valid domain name, ignoring.", domain);
+ continue;
+ }
+
+ domain = normalized;
+
+ if (is_localhost(domain)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "'localhost' domain may not be configured as search or route domain, ignoring assignment: %s",
+ domain);
+ continue;
+ }
+ }
+
+ OrderedSet **set = is_route ? &n->route_domains : &n->search_domains;
+ r = ordered_set_put_strdup(set, domain);
+ if (r == -EEXIST)
+ continue;
+ if (r < 0)
+ return log_oom();
+ }
+}
+
+int config_parse_timezone(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ char **tz = ASSERT_PTR(data);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ *tz = mfree(*tz);
+ return 0;
+ }
+
+ r = verify_timezone(rvalue, LOG_WARNING);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Timezone is not valid, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ return free_and_strdup_warn(tz, rvalue);
+}
+
+int config_parse_dns(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Network *n = ASSERT_PTR(userdata);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ for (unsigned i = 0; i < n->n_dns; i++)
+ in_addr_full_free(n->dns[i]);
+ n->dns = mfree(n->dns);
+ n->n_dns = 0;
+ return 0;
+ }
+
+ for (const char *p = rvalue;;) {
+ _cleanup_(in_addr_full_freep) struct in_addr_full *dns = NULL;
+ _cleanup_free_ char *w = NULL;
+ struct in_addr_full **m;
+
+ r = extract_first_word(&p, &w, NULL, 0);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Invalid syntax, ignoring: %s", rvalue);
+ return 0;
+ }
+ if (r == 0)
+ return 0;
+
+ r = in_addr_full_new_from_string(w, &dns);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse dns server address, ignoring: %s", w);
+ continue;
+ }
+
+ if (IN_SET(dns->port, 53, 853))
+ dns->port = 0;
+
+ m = reallocarray(n->dns, n->n_dns + 1, sizeof(struct in_addr_full*));
+ if (!m)
+ return log_oom();
+
+ m[n->n_dns++] = TAKE_PTR(dns);
+ n->dns = m;
+ }
+}
+
+int config_parse_dnssec_negative_trust_anchors(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Set **nta = ASSERT_PTR(data);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ *nta = set_free_free(*nta);
+ return 0;
+ }
+
+ for (const char *p = rvalue;;) {
+ _cleanup_free_ char *w = NULL;
+
+ r = extract_first_word(&p, &w, NULL, 0);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to extract negative trust anchor domain, ignoring: %s", rvalue);
+ return 0;
+ }
+ if (r == 0)
+ return 0;
+
+ r = dns_name_is_valid(w);
+ if (r <= 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "%s is not a valid domain name, ignoring.", w);
+ continue;
+ }
+
+ r = set_ensure_consume(nta, &dns_name_hash_ops, TAKE_PTR(w));
+ if (r < 0)
+ return log_oom();
+ }
+}
+
+int config_parse_ntp(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ char ***l = ASSERT_PTR(data);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ *l = strv_free(*l);
+ return 0;
+ }
+
+ for (const char *p = rvalue;;) {
+ _cleanup_free_ char *w = NULL;
+
+ r = extract_first_word(&p, &w, NULL, 0);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to extract NTP server name, ignoring: %s", rvalue);
+ return 0;
+ }
+ if (r == 0)
+ return 0;
+
+ r = dns_name_is_valid_or_address(w);
+ if (r <= 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "%s is not a valid domain name or IP address, ignoring.", w);
+ continue;
+ }
+
+ if (strv_length(*l) > MAX_NTP_SERVERS) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "More than %u NTP servers specified, ignoring \"%s\" and any subsequent entries.",
+ MAX_NTP_SERVERS, w);
+ return 0;
+ }
+
+ r = strv_consume(l, TAKE_PTR(w));
+ if (r < 0)
+ return log_oom();
+ }
+}
+
+int config_parse_required_for_online(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Network *network = ASSERT_PTR(userdata);
+ LinkOperationalStateRange range;
+ bool required = true;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ network->required_for_online = -1;
+ network->required_operstate_for_online = LINK_OPERSTATE_RANGE_DEFAULT;
+ return 0;
+ }
+
+ r = parse_operational_state_range(rvalue, &range);
+ if (r < 0) {
+ r = parse_boolean(rvalue);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse %s= setting, ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+
+ required = r;
+ range = LINK_OPERSTATE_RANGE_DEFAULT;
+ }
+
+ network->required_for_online = required;
+ network->required_operstate_for_online = range;
+
+ return 0;
+}
+
+int config_parse_link_group(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Network *network = ASSERT_PTR(userdata);
+ int r;
+ int32_t group;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ network->group = -1;
+ return 0;
+ }
+
+ r = safe_atoi32(rvalue, &group);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse Group=, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ if (group < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Value of Group= must be in the range 0…2147483647, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ network->group = group;
+ return 0;
+}
+
+int config_parse_ignore_carrier_loss(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Network *network = ASSERT_PTR(userdata);
+ usec_t usec;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ network->ignore_carrier_loss_set = false;
+ return 0;
+ }
+
+ r = parse_boolean(rvalue);
+ if (r >= 0) {
+ network->ignore_carrier_loss_set = true;
+ network->ignore_carrier_loss_usec = r > 0 ? USEC_INFINITY : 0;
+ return 0;
+ }
+
+ r = parse_sec(rvalue, &usec);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse %s=, ignoring assignment: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ network->ignore_carrier_loss_set = true;
+ network->ignore_carrier_loss_usec = usec;
+ return 0;
+}
+
+DEFINE_CONFIG_PARSE_ENUM(config_parse_required_family_for_online, link_required_address_family, AddressFamily,
+ "Failed to parse RequiredFamilyForOnline= setting");
+
+DEFINE_CONFIG_PARSE_ENUM(config_parse_keep_configuration, keep_configuration, KeepConfiguration,
+ "Failed to parse KeepConfiguration= setting");
+
+static const char* const keep_configuration_table[_KEEP_CONFIGURATION_MAX] = {
+ [KEEP_CONFIGURATION_NO] = "no",
+ [KEEP_CONFIGURATION_DHCP_ON_STOP] = "dhcp-on-stop",
+ [KEEP_CONFIGURATION_DHCP] = "dhcp",
+ [KEEP_CONFIGURATION_STATIC] = "static",
+ [KEEP_CONFIGURATION_YES] = "yes",
+};
+
+DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(keep_configuration, KeepConfiguration, KEEP_CONFIGURATION_YES);
+
+static const char* const activation_policy_table[_ACTIVATION_POLICY_MAX] = {
+ [ACTIVATION_POLICY_UP] = "up",
+ [ACTIVATION_POLICY_ALWAYS_UP] = "always-up",
+ [ACTIVATION_POLICY_MANUAL] = "manual",
+ [ACTIVATION_POLICY_ALWAYS_DOWN] = "always-down",
+ [ACTIVATION_POLICY_DOWN] = "down",
+ [ACTIVATION_POLICY_BOUND] = "bound",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(activation_policy, ActivationPolicy);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_activation_policy, activation_policy, ActivationPolicy, "Failed to parse activation policy");