/*-*- 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; 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; struct ether_addr *match_mac; char *match_path; char *match_driver; char *match_type; char *match_name; char *dhcp_vendor_class_identifier; Condition *match_host; Condition *match_virt; Condition *match_kernel; Condition *match_arch; char *description; NetDev *bridge; NetDev *bond; Hashmap *stacked_netdevs; AddressFamilyBoolean dhcp; 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; bool ipv4ll; bool ipv4ll_route; 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_bus *bus; struct udev *udev; struct udev_monitor *udev_monitor; sd_event_source *udev_event_source; char *state_file; Hashmap *links; Hashmap *netdevs; LIST_HEAD(Network, networks); LIST_HEAD(AddressPool, address_pools); 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_rtnl_enumerate_links(Manager *m); int manager_rtnl_enumerate_addresses(Manager *m); int manager_rtnl_listen(Manager *m); int manager_udev_listen(Manager *m); int manager_bus_listen(Manager *m); 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(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); /* 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); /* 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(sd_rtnl *const rtnl, FdbEntry *const fdb_entry, const int ifindex); 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); /* 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);