/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2013 Tom Gundersen 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 . ***/ #pragma once #include #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 "rtnl-util.h" #include "hashmap.h" #include "list.h" #include "set.h" #include "condition-util.h" #include "socket-util.h" #define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU #define VXLAN_VID_MAX (1u << 24) - 1 #define DHCP_STATIC_ROUTE_METRIC 1024 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 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 MacVlanMode { NETDEV_MACVLAN_MODE_PRIVATE = MACVLAN_MODE_PRIVATE, NETDEV_MACVLAN_MODE_VEPA = MACVLAN_MODE_VEPA, NETDEV_MACVLAN_MODE_BRIDGE = MACVLAN_MODE_BRIDGE, NETDEV_MACVLAN_MODE_PASSTHRU = MACVLAN_MODE_PASSTHRU, _NETDEV_MACVLAN_MODE_MAX, _NETDEV_MACVLAN_MODE_INVALID = -1 } MacVlanMode; typedef enum NetDevKind { NETDEV_KIND_BRIDGE, NETDEV_KIND_BOND, NETDEV_KIND_VLAN, NETDEV_KIND_MACVLAN, NETDEV_KIND_VXLAN, NETDEV_KIND_IPIP, NETDEV_KIND_GRE, NETDEV_KIND_SIT, NETDEV_KIND_VETH, NETDEV_KIND_VTI, NETDEV_KIND_DUMMY, _NETDEV_KIND_MAX, _NETDEV_KIND_INVALID = -1 } NetDevKind; typedef enum NetDevState { NETDEV_STATE_FAILED, NETDEV_STATE_CREATING, NETDEV_STATE_READY, NETDEV_STATE_LINGER, _NETDEV_STATE_MAX, _NETDEV_STATE_INVALID = -1, } NetDevState; struct NetDev { Manager *manager; int n_ref; char *filename; Condition *match_host; Condition *match_virt; Condition *match_kernel; Condition *match_arch; char *description; char *ifname; char *ifname_peer; size_t mtu; struct ether_addr *mac; struct ether_addr *mac_peer; NetDevKind kind; uint64_t vlanid; uint64_t vxlanid; int32_t macvlan_mode; int ifindex; NetDevState state; bool tunnel_pmtudisc; bool learning; unsigned ttl; unsigned tos; struct in_addr local; struct in_addr remote; struct in_addr group; LIST_HEAD(netdev_enslave_callback, callbacks); }; typedef enum DHCPSupport { DHCP_SUPPORT_NONE, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V4, DHCP_SUPPORT_V6, _DHCP_SUPPORT_MAX, _DHCP_SUPPORT_INVALID = -1, } DHCPSupport; struct Network { Manager *manager; char *filename; 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; NetDev *tunnel; Hashmap *vlans; Hashmap *macvlans; Hashmap *vxlans; DHCPSupport dhcp; bool dhcp_dns; bool dhcp_ntp; bool dhcp_mtu; bool dhcp_hostname; bool dhcp_domainname; bool dhcp_sendhost; bool dhcp_critical; bool dhcp_routes; bool ipv4ll; bool dhcp_server; LIST_HEAD(Address, static_addresses); LIST_HEAD(Route, static_routes); Hashmap *addresses_by_section; Hashmap *routes_by_section; LIST_HEAD(Address, dns); LIST_HEAD(Address, ntp); LIST_FIELDS(Network, networks); }; struct Address { Network *network; uint64_t section; unsigned char family; unsigned char prefixlen; unsigned char scope; char *label; struct in_addr broadcast; struct ifa_cacheinfo cinfo; union in_addr_union in_addr; LIST_FIELDS(Address, addresses); }; struct Route { Network *network; uint64_t section; unsigned char family; unsigned char dst_prefixlen; unsigned char scope; uint32_t metrics; union in_addr_union in_addr; union in_addr_union dst_addr; LIST_FIELDS(Route, routes); }; typedef enum LinkState { LINK_STATE_INITIALIZING, LINK_STATE_ENSLAVING, LINK_STATE_SETTING_ADDRESSES, LINK_STATE_SETTING_ROUTES, LINK_STATE_CONFIGURED, LINK_STATE_UNMANAGED, LINK_STATE_FAILED, LINK_STATE_LINGER, _LINK_STATE_MAX, _LINK_STATE_INVALID = -1 } LinkState; typedef enum LinkOperationalState { LINK_OPERSTATE_UNKNOWN, LINK_OPERSTATE_DORMANT, LINK_OPERSTATE_CARRIER, LINK_OPERSTATE_DEGRADED, LINK_OPERSTATE_ROUTABLE, _LINK_OPERSTATE_MAX, _LINK_OPERSTATE_INVALID = -1 } LinkOperationalState; struct Link { Manager *manager; int n_ref; uint64_t ifindex; char *ifname; char *state_file; struct ether_addr mac; struct udev_device *udev_device; unsigned flags; uint8_t kernel_operstate; Network *network; LinkState state; LinkOperationalState operstate; unsigned addr_messages; unsigned route_messages; unsigned enslaving; LIST_HEAD(Address, addresses); sd_dhcp_client *dhcp_client; sd_dhcp_lease *dhcp_lease; char *lease_file; uint16_t original_mtu; sd_ipv4ll *ipv4ll; LIST_HEAD(Address, pool_addresses); sd_dhcp_server *dhcp_server; sd_icmp6_nd *icmp6_router_discovery; sd_dhcp6_client *dhcp6_client; }; struct AddressPool { Manager *manager; unsigned 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; sd_event_source *sigterm_event_source; sd_event_source *sigint_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_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, unsigned family, unsigned prefixlen, union in_addr_union *found); DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free); #define _cleanup_manager_free_ _cleanup_(manager_freep) /* NetDev */ int netdev_load(Manager *manager); void netdev_drop(NetDev *netdev); NetDev *netdev_unref(NetDev *netdev); NetDev *netdev_ref(NetDev *netdev); DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref); #define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp) int netdev_get(Manager *manager, const char *name, NetDev **ret); int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *newlink); int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb); int netdev_create_tunnel(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback); int netdev_create_veth(NetDev *netdev, sd_rtnl_message_handler_t callback); int netdev_create_vxlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback); int netdev_create_dummy(NetDev *netdev, sd_rtnl_message_handler_t callback); const char *netdev_kind_to_string(NetDevKind d) _const_; NetDevKind netdev_kind_from_string(const char *d) _pure_; const char *macvlan_mode_to_string(MacVlanMode d) _const_; MacVlanMode macvlan_mode_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); int config_parse_macvlan_mode(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_netdev_gperf_lookup(const char *key, unsigned length); /* 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_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); /* 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); 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); /* 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); bool address_equal(Address *a1, Address *a2); 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_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); /* Link */ Link *link_unref(Link *link); Link *link_ref(Link *link); int link_get(Manager *m, int ifindex, Link **ret); int link_add(Manager *manager, sd_rtnl_message *message, Link **ret); void link_drop(Link *link); int link_update(Link *link, sd_rtnl_message *message); int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata); int link_initialized(Link *link, struct udev_device *device); int link_save(Link *link); bool link_has_carrier(unsigned flags, uint8_t operstate); const char* link_state_to_string(LinkState s) _const_; LinkState link_state_from_string(const char *s) _pure_; const char* link_operstate_to_string(LinkOperationalState s) _const_; LinkOperationalState link_operstate_from_string(const char *s) _pure_; DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref); #define _cleanup_link_unref_ _cleanup_(link_unrefp) /* DHCP support */ const char* dhcp_support_to_string(DHCPSupport i) _const_; DHCPSupport dhcp_support_from_string(const char *s) _pure_; 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); /* Address Pool */ int address_pool_new(Manager *m, AddressPool **ret, unsigned family, const union in_addr_union *u, unsigned prefixlen); int address_pool_new_from_string(Manager *m, AddressPool **ret, unsigned 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); /* 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, IFNAMSIZ, 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->ifname, "%-*s: " fmt, IFNAMSIZ, netdev->ifname, ##__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->ifname, __VA_ARGS__) #define NETDEV(netdev) "INTERFACE=%s", netdev->ifname #define ADDRESS_FMT_VAL(address) \ (address).s_addr & 0xFF, \ ((address).s_addr >> 8) & 0xFF, \ ((address).s_addr >> 16) & 0xFF, \ (address).s_addr >> 24