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418f2dc75564330d4ff6c86193f4a3c8ffbb1f1b
systemd/src/network/networkd-network.c
Yu Watanabe 418f2dc755 network: introduce network- and protocol-independent default for UseDomains= 
Follow-up for fb57300743.

Prompted by #32273.
2024-04-20 12:01:53 +09:00

1086 lines
42 KiB
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/* Make sure the net/if.h header is included before any linux/ one */
#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-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"
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 (!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(network->addresses_by_section);
network->routes_by_section = hashmap_free(network->routes_by_section);
}
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;
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;
network_adjust_ipv6_proxy_ndp(network);
network_adjust_ndisc(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);
r = network_drop_invalid_nexthops(network);
if (r < 0)
return r;
network_drop_invalid_bridge_fdb_entries(network);
network_drop_invalid_bridge_mdb_entries(network);
r = network_drop_invalid_neighbors(network);
if (r < 0)
return r;
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);
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_INVALID,
.activation_policy = _ACTIVATION_POLICY_INVALID,
.group = -1,
.arp = -1,
.multicast = -1,
.allmulticast = -1,
.promiscuous = -1,
.keep_configuration = manager->keep_configuration,
.use_domains = _USE_DOMAINS_INVALID,
.compat_dhcp_use_domains = _USE_DOMAINS_INVALID,
.compat_dhcp_use_dns = -1,
.compat_dhcp_use_ntp = -1,
.dhcp_duid.type = _DUID_TYPE_INVALID,
.dhcp_critical = -1,
.dhcp_use_ntp = -1,
.dhcp_routes_to_ntp = true,
.dhcp_use_sip = true,
.dhcp_use_captive_portal = true,
.dhcp_use_dns = -1,
.dhcp_routes_to_dns = true,
.dhcp_use_domains = _USE_DOMAINS_INVALID,
.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_use_rapid_commit = -1,
.dhcp_client_identifier = _DHCP_CLIENT_ID_INVALID,
.dhcp_route_table = RT_TABLE_MAIN,
.dhcp_ip_service_type = -1,
.dhcp_broadcast = -1,
.dhcp_ipv6_only_mode = -1,
.dhcp6_use_address = true,
.dhcp6_use_pd_prefix = true,
.dhcp6_use_dns = -1,
.dhcp6_use_domains = _USE_DOMAINS_INVALID,
.dhcp6_use_hostname = true,
.dhcp6_use_ntp = -1,
.dhcp6_use_captive_portal = true,
.dhcp6_use_rapid_commit = true,
.dhcp6_send_hostname = true,
.dhcp6_duid.type = _DUID_TYPE_INVALID,
.dhcp6_client_start_mode = _DHCP6_CLIENT_START_MODE_INVALID,
.dhcp6_send_release = true,
.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,
.dhcp_server_rapid_commit = true,
.dhcp_server_persist_leases = -1,
.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,
.bridge_vlan_pvid = BRIDGE_VLAN_KEEP_PVID,
.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,
.ip_forwarding = { -1, -1, },
.ipv4_accept_local = -1,
.ipv4_route_localnet = -1,
.ipv6_privacy_extensions = _IPV6_PRIVACY_EXTENSIONS_INVALID,
.ipv6_dad_transmits = -1,
.ipv6_proxy_ndp = -1,
.proxy_arp = -1,
.proxy_arp_pvlan = -1,
.ipv4_rp_filter = _IP_REVERSE_PATH_FILTER_INVALID,
.ndisc = -1,
.ndisc_use_redirect = true,
.ndisc_use_dns = -1,
.ndisc_use_gateway = true,
.ndisc_use_captive_portal = true,
.ndisc_use_route_prefix = true,
.ndisc_use_autonomous_prefix = true,
.ndisc_use_onlink_prefix = true,
.ndisc_use_mtu = true,
.ndisc_use_hop_limit = true,
.ndisc_use_reachable_time = true,
.ndisc_use_retransmission_time = true,
.ndisc_use_domains = _USE_DOMAINS_INVALID,
.ndisc_route_table = RT_TABLE_MAIN,
.ndisc_route_metric_high = IPV6RA_ROUTE_METRIC_HIGH,
.ndisc_route_metric_medium = IPV6RA_ROUTE_METRIC_MEDIUM,
.ndisc_route_metric_low = IPV6RA_ROUTE_METRIC_LOW,
.ndisc_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, /* root = */ NULL,
"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"
"IPv6PREF64Prefix\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,
&network->dropins);
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;
r = manager_build_dhcp_pd_subnet_ids(manager);
if (r < 0)
return r;
r = manager_build_nexthop_ids(manager);
if (r < 0)
return r;
return 0;
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);
strv_free(network->dropins);
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);
nft_set_context_clear(&network->dhcp_nft_set_context);
/* DHCPv6 client */
free(network->dhcp6_mudurl);
free(network->dhcp6_hostname);
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);
nft_set_context_clear(&network->dhcp6_nft_set_context);
/* DHCP PD */
free(network->dhcp_pd_uplink_name);
set_free(network->dhcp_pd_tokens);
free(network->dhcp_pd_netlabel);
nft_set_context_clear(&network->dhcp_pd_nft_set_context);
/* 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);
nft_set_context_clear(&network->ndisc_nft_set_context);
/* 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(network->addresses_by_section);
hashmap_free(network->routes_by_section);
ordered_hashmap_free(network->nexthops_by_section);
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);
ordered_hashmap_free(network->neighbors_by_section);
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->pref64_prefixes_by_section, pref64_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;
ORDERED_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;
if (!hashmap_isempty(network->pref64_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_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);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
network->required_for_online = -1;
network->required_operstate_for_online = LINK_OPERSTATE_RANGE_INVALID;
return 0;
}
r = parse_operational_state_range(rvalue, &network->required_operstate_for_online);
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;
}
network->required_for_online = r;
network->required_operstate_for_online = LINK_OPERSTATE_RANGE_DEFAULT;
return 0;
}
network->required_for_online = true;
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");
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