d0d6a4cd70
This allows both IPv4 and IPv6 link-local addresses to be enabled or disabled. By default we still enable IPv6LL and disable IPv4LL. The old config option is kept for backwards compatibility, but removed from the documentation.
434 lines
15 KiB
C
434 lines
15 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#pragma once
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#include <arpa/inet.h>
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#include "sd-event.h"
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#include "sd-rtnl.h"
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#include "sd-bus.h"
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#include "sd-dhcp-client.h"
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#include "sd-dhcp-server.h"
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#include "sd-ipv4ll.h"
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#include "sd-icmp6-nd.h"
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#include "sd-dhcp6-client.h"
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#include "udev.h"
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#include "sd-lldp.h"
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#include "rtnl-util.h"
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#include "hashmap.h"
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#include "list.h"
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#include "set.h"
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#include "condition.h"
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#include "in-addr-util.h"
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#define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU
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#define DHCP_ROUTE_METRIC 1024
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#define IPV4LL_ROUTE_METRIC 2048
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typedef struct NetDev NetDev;
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typedef struct Network Network;
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typedef struct Link Link;
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typedef struct Address Address;
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typedef struct Route Route;
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typedef struct Manager Manager;
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typedef struct AddressPool AddressPool;
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typedef struct FdbEntry FdbEntry;
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typedef enum AddressFamilyBoolean {
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/* This is a bitmask, though it usually doesn't feel that way! */
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ADDRESS_FAMILY_NO = 0,
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ADDRESS_FAMILY_IPV4 = 1,
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ADDRESS_FAMILY_IPV6 = 2,
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ADDRESS_FAMILY_YES = 3,
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_ADDRESS_FAMILY_BOOLEAN_MAX,
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_ADDRESS_FAMILY_BOOLEAN_INVALID = -1,
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} AddressFamilyBoolean;
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typedef enum LLMNRSupport {
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LLMNR_SUPPORT_NO,
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LLMNR_SUPPORT_YES,
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LLMNR_SUPPORT_RESOLVE,
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_LLMNR_SUPPORT_MAX,
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_LLMNR_SUPPORT_INVALID = -1,
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} LLMNRSupport;
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typedef enum LinkOperationalState {
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LINK_OPERSTATE_OFF,
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LINK_OPERSTATE_NO_CARRIER,
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LINK_OPERSTATE_DORMANT,
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LINK_OPERSTATE_CARRIER,
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LINK_OPERSTATE_DEGRADED,
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LINK_OPERSTATE_ROUTABLE,
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_LINK_OPERSTATE_MAX,
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_LINK_OPERSTATE_INVALID = -1
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} LinkOperationalState;
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struct FdbEntry {
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Network *network;
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unsigned section;
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struct ether_addr *mac_addr;
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uint16_t vlan_id;
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LIST_FIELDS(FdbEntry, static_fdb_entries);
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};
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struct Network {
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Manager *manager;
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char *filename;
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char *name;
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struct ether_addr *match_mac;
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char *match_path;
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char *match_driver;
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char *match_type;
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char *match_name;
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Condition *match_host;
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Condition *match_virt;
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Condition *match_kernel;
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Condition *match_arch;
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char *description;
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NetDev *bridge;
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NetDev *bond;
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Hashmap *stacked_netdevs;
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AddressFamilyBoolean dhcp;
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char *dhcp_vendor_class_identifier;
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bool dhcp_dns;
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bool dhcp_ntp;
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bool dhcp_mtu;
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bool dhcp_hostname;
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bool dhcp_domains;
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bool dhcp_sendhost;
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bool dhcp_broadcast;
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bool dhcp_critical;
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bool dhcp_routes;
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unsigned dhcp_route_metric;
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AddressFamilyBoolean link_local;
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bool ipv4ll_route;
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bool dhcp_server;
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unsigned cost;
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AddressFamilyBoolean ip_forward;
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bool ip_masquerade;
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struct ether_addr *mac;
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unsigned mtu;
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bool lldp;
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LIST_HEAD(Address, static_addresses);
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LIST_HEAD(Route, static_routes);
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LIST_HEAD(FdbEntry, static_fdb_entries);
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Hashmap *addresses_by_section;
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Hashmap *routes_by_section;
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Hashmap *fdb_entries_by_section;
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bool wildcard_domain;
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char **domains, **dns, **ntp;
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LLMNRSupport llmnr;
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LIST_FIELDS(Network, networks);
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};
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struct Address {
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Network *network;
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unsigned section;
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int family;
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unsigned char prefixlen;
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unsigned char scope;
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unsigned char flags;
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char *label;
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struct in_addr broadcast;
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struct ifa_cacheinfo cinfo;
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union in_addr_union in_addr;
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union in_addr_union in_addr_peer;
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bool ip_masquerade_done;
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LIST_FIELDS(Address, addresses);
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};
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struct Route {
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Network *network;
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unsigned section;
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int family;
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unsigned char dst_prefixlen;
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unsigned char src_prefixlen;
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unsigned char scope;
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uint32_t metrics;
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unsigned char protocol; /* RTPROT_* */
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union in_addr_union in_addr;
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union in_addr_union dst_addr;
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union in_addr_union src_addr;
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union in_addr_union prefsrc_addr;
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LIST_FIELDS(Route, routes);
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};
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struct AddressPool {
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Manager *manager;
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int family;
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unsigned prefixlen;
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union in_addr_union in_addr;
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LIST_FIELDS(AddressPool, address_pools);
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};
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struct Manager {
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sd_rtnl *rtnl;
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sd_event *event;
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sd_event_source *bus_retry_event_source;
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sd_bus *bus;
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sd_bus_slot *prepare_for_sleep_slot;
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struct udev *udev;
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struct udev_monitor *udev_monitor;
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sd_event_source *udev_event_source;
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bool enumerating;
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char *state_file;
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LinkOperationalState operational_state;
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Hashmap *links;
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Hashmap *netdevs;
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Hashmap *networks_by_name;
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LIST_HEAD(Network, networks);
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LIST_HEAD(AddressPool, address_pools);
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usec_t network_dirs_ts_usec;
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};
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extern const char* const network_dirs[];
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/* Manager */
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extern const sd_bus_vtable manager_vtable[];
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int manager_new(Manager **ret);
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void manager_free(Manager *m);
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int manager_connect_bus(Manager *m);
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int manager_run(Manager *m);
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int manager_load_config(Manager *m);
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bool manager_should_reload(Manager *m);
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int manager_rtnl_enumerate_links(Manager *m);
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int manager_rtnl_enumerate_addresses(Manager *m);
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int manager_send_changed(Manager *m, const char *property, ...) _sentinel_;
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int manager_save(Manager *m);
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int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
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#define _cleanup_manager_free_ _cleanup_(manager_freep)
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/* Network */
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int network_load(Manager *manager);
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void network_free(Network *network);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
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#define _cleanup_network_free_ _cleanup_(network_freep)
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int network_get_by_name(Manager *manager, const char *name, Network **ret);
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int network_get(Manager *manager, struct udev_device *device,
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const char *ifname, const struct ether_addr *mac,
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Network **ret);
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int network_apply(Manager *manager, Network *network, Link *link);
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int config_parse_netdev(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_domains(const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata);
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int config_parse_tunnel(const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata);
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int config_parse_tunnel_address(const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata);
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int config_parse_vxlan_group_address(const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata);
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extern const sd_bus_vtable network_vtable[];
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int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
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int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
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/* gperf */
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const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
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/* Route */
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int route_new_static(Network *network, unsigned section, Route **ret);
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int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
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void route_free(Route *route);
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int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
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int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
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#define _cleanup_route_free_ _cleanup_(route_freep)
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int config_parse_gateway(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_destination(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_route_priority(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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/* Address */
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int address_new_static(Network *network, unsigned section, Address **ret);
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int address_new_dynamic(Address **ret);
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void address_free(Address *address);
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int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
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int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
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int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
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int address_establish(Address *address, Link *link);
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int address_release(Address *address, Link *link);
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bool address_equal(Address *a1, Address *a2);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
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#define _cleanup_address_free_ _cleanup_(address_freep)
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int config_parse_address(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_label(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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/* Forwarding database table. */
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int fdb_entry_configure(sd_rtnl *const rtnl, FdbEntry *const fdb_entry, const int ifindex);
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void fdb_entry_free(FdbEntry *fdb_entry);
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int fdb_entry_new_static(Network *const network, const unsigned section, FdbEntry **ret);
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DEFINE_TRIVIAL_CLEANUP_FUNC(FdbEntry*, fdb_entry_free);
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#define _cleanup_fdbentry_free_ _cleanup_(fdb_entry_freep)
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int config_parse_fdb_hwaddr(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_fdb_vlan_id(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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/* DHCP support */
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int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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/* IPv4LL support (legacy) */
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int config_parse_ipv4ll(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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/* LLMNR support */
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const char* llmnr_support_to_string(LLMNRSupport i) _const_;
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LLMNRSupport llmnr_support_from_string(const char *s) _pure_;
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int config_parse_llmnr(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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/* Address Pool */
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int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
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int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
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void address_pool_free(AddressPool *p);
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int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
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const char *address_family_boolean_to_string(AddressFamilyBoolean b) _const_;
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AddressFamilyBoolean address_family_boolean_from_string(const char *s) _const_;
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int config_parse_address_family_boolean(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);
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/* Opeartional State */
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const char* link_operstate_to_string(LinkOperationalState s) _const_;
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LinkOperationalState link_operstate_from_string(const char *s) _pure_;
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