459 lines
16 KiB
C
459 lines
16 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-netlink.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 "netlink-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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typedef enum DCHPClientIdentifier {
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DHCP_CLIENT_ID_MAC,
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DHCP_CLIENT_ID_DUID,
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_DHCP_CLIENT_ID_MAX,
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_DHCP_CLIENT_ID_INVALID = -1,
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} DCHPClientIdentifier;
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typedef enum IPv6PrivacyExtensions {
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/* The values map to the kernel's /proc/sys/net/ipv6/conf/xxx/use_tempaddr values */
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IPV6_PRIVACY_EXTENSIONS_NO,
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IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC,
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IPV6_PRIVACY_EXTENSIONS_YES, /* aka prefer-temporary */
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_IPV6_PRIVACY_EXTENSIONS_MAX,
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_IPV6_PRIVACY_EXTENSIONS_INVALID = -1,
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} IPv6PrivacyExtensions;
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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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DCHPClientIdentifier dhcp_client_identifier;
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char *dhcp_vendor_class_identifier;
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char *hostname;
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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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union in_addr_union ipv6_token;
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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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IPv6PrivacyExtensions ipv6_privacy_extensions;
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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, **bind_carrier;
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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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uint32_t 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_netlink *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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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_netlink_message_handler_t callback);
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int route_drop(Route *route, Link *link, sd_netlink_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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int config_parse_route_scope(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_netlink_message_handler_t callback);
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int address_update(Address *address, Link *link, sd_netlink_message_handler_t callback);
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int address_drop(Address *address, Link *link, sd_netlink_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(Link *const link, FdbEntry *const fdb_entry);
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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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int config_parse_dhcp_client_identifier(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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/* IPv6 support */
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int config_parse_ipv6token(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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/* IPForwarding parser */
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int config_parse_address_family_boolean_with_kernel(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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/* Operational 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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/* IPv6 privacy extensions support */
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const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
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IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
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int config_parse_ipv6_privacy_extensions(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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/* Hostname */
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int config_parse_hostname(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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