/*-*- 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-bus.h" #include "sd-dhcp-client.h" #include "udev.h" #include "rtnl-util.h" #include "hashmap.h" #include "list.h" 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 netdev_enslave_callback netdev_enslave_callback; struct netdev_enslave_callback { sd_rtnl_message_handler_t callback; Link *link; LIST_FIELDS(netdev_enslave_callback, callbacks); }; typedef enum NetdevKind { NETDEV_KIND_BRIDGE, NETDEV_KIND_BOND, NETDEV_KIND_VLAN, _NETDEV_KIND_MAX, _NETDEV_KIND_INVALID = -1 } NetdevKind; typedef enum NetdevState { NETDEV_STATE_FAILED, NETDEV_STATE_CREATING, NETDEV_STATE_READY, _NETDEV_STATE_MAX, _NETDEV_STATE_INVALID = -1, } NetdevState; struct Netdev { Manager *manager; char *filename; char *description; char *name; NetdevKind kind; int vlanid; Link *link; NetdevState state; LIST_HEAD(netdev_enslave_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; Netdev *bridge; Netdev *bond; Netdev *vlan; bool dhcp; bool dhcp_dns; bool dhcp_mtu; bool dhcp_hostname; bool dhcp_domainname; LIST_HEAD(Address, static_addresses); LIST_HEAD(Route, static_routes); Address *dns; 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_ENSLAVING, 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; Address *dns; uint16_t original_mtu; LinkState state; unsigned addr_messages; unsigned route_messages; unsigned enslaving; sd_dhcp_client *dhcp; }; struct Manager { sd_rtnl *rtnl; sd_event *event; sd_bus *bus; struct udev *udev; struct udev_monitor *udev_monitor; sd_event_source *udev_event_source; Hashmap *links; Hashmap *netdevs; 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); int manager_bus_listen(Manager *m); int manager_update_resolv_conf(Manager *m); DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free); #define _cleanup_manager_free_ _cleanup_(manager_freep) /* Netdev */ int netdev_load(Manager *manager); void netdev_free(Netdev *netdev); DEFINE_TRIVIAL_CLEANUP_FUNC(Netdev*, netdev_free); #define _cleanup_netdev_free_ _cleanup_(netdev_freep) int netdev_get(Manager *manager, const char *name, Netdev **ret); int netdev_set_link(Manager *m, NetdevKind kind, Link *link); int netdev_enslave(Netdev *netdev, Link *link, sd_rtnl_message_handler_t cb); const char *netdev_kind_to_string(NetdevKind d) _const_; NetdevKind netdev_kind_from_string(const char *d) _pure_; int config_parse_netdev_kind(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 */ 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); int config_parse_bond(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_vlan(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_dns(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_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_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__) /* More macros which append INTERFACE= to the message */ #define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->name, "%s: " fmt, netdev->name, ##__VA_ARGS__) #define log_debug_netdev(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__) #define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__) #define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__) #define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__) #define log_error_netdev(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__) #define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->name, __VA_ARGS__) #define NETDEV(netdev) "INTERFACE=%s", netdev->name #define ADDRESS_FMT_VAL(address) \ (address).s_addr & 0xFF, \ ((address).s_addr >> 8) & 0xFF, \ ((address).s_addr >> 16) & 0xFF, \ (address).s_addr >> 24