networkd.h revision ea6ec096db5f9f3562b9bbf438da7fe21411c74d
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2013 Tom Gundersen <teg@jklm.no>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#pragma once
#include <arpa/inet.h>
#include "sd-event.h"
#include "sd-rtnl.h"
#include "sd-bus.h"
#include "sd-dhcp-client.h"
#include "sd-dhcp-server.h"
#include "sd-ipv4ll.h"
#include "sd-icmp6-nd.h"
#include "sd-dhcp6-client.h"
#include "udev.h"
#include "sd-lldp.h"
#include "rtnl-util.h"
#include "hashmap.h"
#include "list.h"
#include "set.h"
#include "condition.h"
#include "in-addr-util.h"
#define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU
#define DHCP_ROUTE_METRIC 1024
#define IPV4LL_ROUTE_METRIC 2048
typedef struct NetDev NetDev;
typedef struct Network Network;
typedef struct Link Link;
typedef struct Address Address;
typedef struct Route Route;
typedef struct Manager Manager;
typedef struct AddressPool AddressPool;
typedef struct FdbEntry FdbEntry;
typedef enum AddressFamilyBoolean {
/* This is a bitmask, though it usually doesn't feel that way! */
ADDRESS_FAMILY_NO = 0,
ADDRESS_FAMILY_IPV4 = 1,
ADDRESS_FAMILY_IPV6 = 2,
ADDRESS_FAMILY_YES = 3,
_ADDRESS_FAMILY_BOOLEAN_MAX,
_ADDRESS_FAMILY_BOOLEAN_INVALID = -1,
} AddressFamilyBoolean;
typedef enum LLMNRSupport {
LLMNR_SUPPORT_NO,
LLMNR_SUPPORT_YES,
LLMNR_SUPPORT_RESOLVE,
_LLMNR_SUPPORT_MAX,
_LLMNR_SUPPORT_INVALID = -1,
} LLMNRSupport;
typedef enum LinkOperationalState {
LINK_OPERSTATE_OFF,
LINK_OPERSTATE_NO_CARRIER,
LINK_OPERSTATE_DORMANT,
LINK_OPERSTATE_CARRIER,
LINK_OPERSTATE_DEGRADED,
LINK_OPERSTATE_ROUTABLE,
_LINK_OPERSTATE_MAX,
_LINK_OPERSTATE_INVALID = -1
} LinkOperationalState;
struct FdbEntry {
Network *network;
unsigned section;
struct ether_addr *mac_addr;
uint16_t vlan_id;
LIST_FIELDS(FdbEntry, static_fdb_entries);
};
struct Network {
Manager *manager;
char *filename;
char *name;
struct ether_addr *match_mac;
char *match_path;
char *match_driver;
char *match_type;
char *match_name;
Condition *match_host;
Condition *match_virt;
Condition *match_kernel;
Condition *match_arch;
char *description;
NetDev *bridge;
NetDev *bond;
Hashmap *stacked_netdevs;
AddressFamilyBoolean dhcp;
char *dhcp_vendor_class_identifier;
bool dhcp_dns;
bool dhcp_ntp;
bool dhcp_mtu;
bool dhcp_hostname;
bool dhcp_domains;
bool dhcp_sendhost;
bool dhcp_broadcast;
bool dhcp_critical;
bool dhcp_routes;
unsigned dhcp_route_metric;
AddressFamilyBoolean link_local;
bool ipv4ll_route;
union in_addr_union ipv6_token;
bool dhcp_server;
unsigned cost;
AddressFamilyBoolean ip_forward;
bool ip_masquerade;
struct ether_addr *mac;
unsigned mtu;
bool lldp;
LIST_HEAD(Address, static_addresses);
LIST_HEAD(Route, static_routes);
LIST_HEAD(FdbEntry, static_fdb_entries);
Hashmap *addresses_by_section;
Hashmap *routes_by_section;
Hashmap *fdb_entries_by_section;
bool wildcard_domain;
char **domains, **dns, **ntp;
LLMNRSupport llmnr;
LIST_FIELDS(Network, networks);
};
struct Address {
Network *network;
unsigned section;
int family;
unsigned char prefixlen;
unsigned char scope;
unsigned char flags;
char *label;
struct in_addr broadcast;
struct ifa_cacheinfo cinfo;
union in_addr_union in_addr;
union in_addr_union in_addr_peer;
bool ip_masquerade_done;
LIST_FIELDS(Address, addresses);
};
struct Route {
Network *network;
unsigned section;
int family;
unsigned char dst_prefixlen;
unsigned char src_prefixlen;
unsigned char scope;
uint32_t metrics;
unsigned char protocol; /* RTPROT_* */
union in_addr_union in_addr;
union in_addr_union dst_addr;
union in_addr_union src_addr;
union in_addr_union prefsrc_addr;
LIST_FIELDS(Route, routes);
};
struct AddressPool {
Manager *manager;
int family;
unsigned prefixlen;
union in_addr_union in_addr;
LIST_FIELDS(AddressPool, address_pools);
};
struct Manager {
sd_rtnl *rtnl;
sd_event *event;
sd_event_source *bus_retry_event_source;
sd_bus *bus;
sd_bus_slot *prepare_for_sleep_slot;
struct udev *udev;
struct udev_monitor *udev_monitor;
sd_event_source *udev_event_source;
bool enumerating;
char *state_file;
LinkOperationalState operational_state;
Hashmap *links;
Hashmap *netdevs;
Hashmap *networks_by_name;
LIST_HEAD(Network, networks);
LIST_HEAD(AddressPool, address_pools);
usec_t network_dirs_ts_usec;
};
extern const char* const network_dirs[];
/* Manager */
extern const sd_bus_vtable manager_vtable[];
int manager_new(Manager **ret);
void manager_free(Manager *m);
int manager_connect_bus(Manager *m);
int manager_run(Manager *m);
int manager_load_config(Manager *m);
bool manager_should_reload(Manager *m);
int manager_rtnl_enumerate_links(Manager *m);
int manager_rtnl_enumerate_addresses(Manager *m);
int manager_send_changed(Manager *m, const char *property, ...) _sentinel_;
int manager_save(Manager *m);
int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found);
DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
#define _cleanup_manager_free_ _cleanup_(manager_freep)
/* Network */
int network_load(Manager *manager);
void network_free(Network *network);
DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
#define _cleanup_network_free_ _cleanup_(network_freep)
int network_get_by_name(Manager *manager, const char *name, Network **ret);
int network_get(Manager *manager, struct udev_device *device,
const char *ifname, const struct ether_addr *mac,
Network **ret);
int network_apply(Manager *manager, Network *network, Link *link);
int config_parse_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);
int config_parse_domains(const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata);
int config_parse_tunnel(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);
int config_parse_tunnel_address(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);
int config_parse_vxlan_group_address(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);
extern const sd_bus_vtable network_vtable[];
int network_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
int network_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
/* gperf */
const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
/* Route */
int route_new_static(Network *network, unsigned section, Route **ret);
int route_new_dynamic(Route **ret, unsigned char rtm_protocol);
void route_free(Route *route);
int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
#define _cleanup_route_free_ _cleanup_(route_freep)
int config_parse_gateway(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);
int config_parse_destination(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);
int config_parse_route_priority(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);
int config_parse_route_scope(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);
/* Address */
int address_new_static(Network *network, unsigned section, Address **ret);
int address_new_dynamic(Address **ret);
void address_free(Address *address);
int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
int address_establish(Address *address, Link *link);
int address_release(Address *address, Link *link);
bool address_equal(Address *a1, Address *a2);
DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
#define _cleanup_address_free_ _cleanup_(address_freep)
int config_parse_address(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);
int config_parse_broadcast(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);
int config_parse_label(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);
/* Forwarding database table. */
int fdb_entry_configure(Link *link, FdbEntry *const fdb_entry);
void fdb_entry_free(FdbEntry *fdb_entry);
int fdb_entry_new_static(Network *const network, const unsigned section, FdbEntry **ret);
DEFINE_TRIVIAL_CLEANUP_FUNC(FdbEntry*, fdb_entry_free);
#define _cleanup_fdbentry_free_ _cleanup_(fdb_entry_freep)
int config_parse_fdb_hwaddr(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);
int config_parse_fdb_vlan_id(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);
/* DHCP support */
int config_parse_dhcp(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);
/* IPv4LL support (legacy) */
int config_parse_ipv4ll(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);
/* IPv6 support */
int config_parse_token(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);
/* LLMNR support */
const char* llmnr_support_to_string(LLMNRSupport i) _const_;
LLMNRSupport llmnr_support_from_string(const char *s) _pure_;
int config_parse_llmnr(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);
/* Address Pool */
int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
void address_pool_free(AddressPool *p);
int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);
const char *address_family_boolean_to_string(AddressFamilyBoolean b) _const_;
AddressFamilyBoolean address_family_boolean_from_string(const char *s) _const_;
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);
/* Opeartional State */
const char* link_operstate_to_string(LinkOperationalState s) _const_;
LinkOperationalState link_operstate_from_string(const char *s) _pure_;