networkd.h revision 3333d748facc15f49935b6b793490ba0824976e6
/*-*- 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 <linux/rtnetlink.h>
#include "sd-event.h"
#include "sd-rtnl.h"
#include "sd-dhcp-client.h"
#include "udev.h"
#include "rtnl-util.h"
#include "hashmap.h"
#include "list.h"
typedef struct Bridge Bridge;
typedef struct Network Network;
typedef struct Link Link;
typedef struct Address Address;
typedef struct Route Route;
typedef struct Manager Manager;
typedef struct bridge_join_callback bridge_join_callback;
struct bridge_join_callback {
sd_rtnl_message_handler_t callback;
Link *link;
LIST_FIELDS(bridge_join_callback, callbacks);
};
typedef enum BridgeState {
BRIDGE_STATE_FAILED,
BRIDGE_STATE_CREATING,
BRIDGE_STATE_CREATED,
BRIDGE_STATE_READY,
_BRIDGE_STATE_MAX,
_BRIDGE_STATE_INVALID = -1,
} BridgeState;
struct Bridge {
Manager *manager;
char *filename;
char *description;
char *name;
Link *link;
BridgeState state;
LIST_HEAD(bridge_join_callback, callbacks);
};
struct Network {
Manager *manager;
char *filename;
struct ether_addr *match_mac;
char *match_path;
char *match_driver;
char *match_type;
char *match_name;
char *description;
Bridge *bridge;
bool dhcp;
LIST_HEAD(Address, static_addresses);
LIST_HEAD(Route, static_routes);
Hashmap *addresses_by_section;
Hashmap *routes_by_section;
LIST_FIELDS(Network, networks);
};
struct Address {
Network *network;
uint64_t section;
unsigned char family;
unsigned char prefixlen;
char *label;
struct in_addr netmask;
union {
struct in_addr in;
struct in6_addr in6;
} in_addr;
LIST_FIELDS(Address, static_addresses);
};
struct Route {
Network *network;
uint64_t section;
unsigned char family;
unsigned char dst_family;
unsigned char dst_prefixlen;
union {
struct in_addr in;
struct in6_addr in6;
} in_addr;
union {
struct in_addr in;
struct in6_addr in6;
} dst_addr;
LIST_FIELDS(Route, static_routes);
};
typedef enum LinkState {
LINK_STATE_JOINING_BRIDGE,
LINK_STATE_SETTING_ADDRESSES,
LINK_STATE_SETTING_ROUTES,
LINK_STATE_CONFIGURED,
LINK_STATE_FAILED,
_LINK_STATE_MAX,
_LINK_STATE_INVALID = -1
} LinkState;
struct Link {
Manager *manager;
uint64_t ifindex;
char *ifname;
struct ether_addr mac;
unsigned flags;
Network *network;
Route *dhcp_route;
Address *dhcp_address;
LinkState state;
unsigned addr_messages;
unsigned route_messages;
sd_dhcp_client *dhcp;
};
struct Manager {
sd_rtnl *rtnl;
sd_event *event;
struct udev *udev;
struct udev_monitor *udev_monitor;
sd_event_source *udev_event_source;
Hashmap *links;
Hashmap *bridges;
LIST_HEAD(Network, networks);
usec_t network_dirs_ts_usec;
};
extern const char* const network_dirs[];
/* Manager */
int manager_new(Manager **ret);
void manager_free(Manager *m);
int manager_load_config(Manager *m);
bool manager_should_reload(Manager *m);
int manager_udev_enumerate_links(Manager *m);
int manager_udev_listen(Manager *m);
int manager_rtnl_listen(Manager *m);
DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
#define _cleanup_manager_free_ _cleanup_(manager_freep)
/* Bridge */
int bridge_load(Manager *manager);
void bridge_free(Bridge *bridge);
DEFINE_TRIVIAL_CLEANUP_FUNC(Bridge*, bridge_free);
#define _cleanup_bridge_free_ _cleanup_(bridge_freep)
int bridge_get(Manager *manager, const char *name, Bridge **ret);
int bridge_set_link(Manager *m, Link *link);
int bridge_join(Bridge *bridge, Link *link, sd_rtnl_message_handler_t cb);
/* 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(Manager *manager, struct udev_device *device, Network **ret);
int network_apply(Manager *manager, Network *network, Link *link);
int config_parse_bridge(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);
/* gperf */
const struct ConfigPerfItem* 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);
void route_free(Route *route);
int route_configure(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);
/* 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_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
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_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);
/* Link */
int link_new(Manager *manager, struct udev_device *device, Link **ret);
void link_free(Link *link);
int link_add(Manager *manager, struct udev_device *device, Link **ret);
int link_configure(Link *link);
int link_update(Link *link, sd_rtnl_message *message);
DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free);
#define _cleanup_link_free_ _cleanup_(link_freep)
/* Macros which append INTERFACE= to the message */
#define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%s: " fmt, link->ifname, __VA_ARGS__)
#define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, __VA_ARGS__)
#define log_info_link(link, ...) log_full_link(LOG_INFO, link, __VA_ARGS__)
#define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, __VA_ARGS__)
#define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, __VA_ARGS__)
#define log_error_link(link, ...) log_full_link(LOG_ERR, link, __VA_ARGS__)
#define log_link_full(level, link, message) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%s: " message, link->ifname)
#define log_link_debug(link, ...) log_link_full(LOG_DEBUG, link, __VA_ARGS__)
#define log_link_info(link, ...) log_link_full(LOG_INFO, link, __VA_ARGS__)
#define log_link_notice(link, ...) log_link_full(LOG_NOTICE, link, __VA_ARGS__)
#define log_link_warning(link, ...) log_link_full(LOG_WARNING, link, __VA_ARGS__)
#define log_link_error(link, ...) log_link_full(LOG_ERR, link, __VA_ARGS__)
#define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
/* More macros which append INTERFACE= to the message */
#define log_full_bridge(level, bridge, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", bridge->name, "%s: " fmt, bridge->name, __VA_ARGS__)
#define log_debug_bridge(bridge, ...) log_full_bridge(LOG_DEBUG, bridge, __VA_ARGS__)
#define log_info_bridge(bridge, ...) log_full_bridge(LOG_INFO, bridge, __VA_ARGS__)
#define log_notice_bridge(bridge, ...) log_full_bridge(LOG_NOTICE, bridge, __VA_ARGS__)
#define log_warning_bridge(bridge, ...) log_full_bridge(LOG_WARNING, bridge, __VA_ARGS__)
#define log_error_bridge(bridge, ...) log_full_bridge(LOG_ERR, bridge, __VA_ARGS__)
#define log_bridge_full(level, bridge, message) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", bridge->name, "%s: " message, bridge->name)
#define log_bridge_debug(bridge, ...) log_bridge_full(LOG_DEBUG, bridge, __VA_ARGS__)
#define log_bridge_info(bridge, ...) log_bridge_full(LOG_INFO, bridge, __VA_ARGS__)
#define log_bridge_notice(bridge, ...) log_bridge_full(LOG_NOTICE, bridge, __VA_ARGS__)
#define log_bridge_warning(bridge, ...) log_bridge_full(LOG_WARNING, bridge, __VA_ARGS__)
#define log_bridge_error(bridge, ...) log_bridge_full(LOG_ERR, bridge, __VA_ARGS__)
#define log_struct_bridge(level, bridge, ...) log_struct(level, "INTERFACE=%s", bridge->name, __VA_ARGS__)
#define BRIDGE(bridge) "INTERFACE=%s", bridge->name