chiark / gitweb /
networkd: make metric of routes configurable
[elogind.git] / src / network / networkd.h
index 4f44f78655597265a47a0f0e411d498dfd6292b4..aca3b8dd24a7264b50742ed1d41387bea6cf0fb5 100644 (file)
 #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 "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 "in-addr-util.h"
 
-typedef struct Bridge Bridge;
+#define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU
+#define VXLAN_VID_MAX (1u << 24) - 1
+#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 bridge_join_callback bridge_join_callback;
+typedef struct netdev_enslave_callback netdev_enslave_callback;
 
-struct bridge_join_callback {
+struct netdev_enslave_callback {
         sd_rtnl_message_handler_t callback;
         Link *link;
 
-        LIST_FIELDS(bridge_join_callback, callbacks);
+        LIST_FIELDS(netdev_enslave_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 {
+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 BondMode {
+        NETDEV_BOND_MODE_BALANCE_RR,
+        NETDEV_BOND_MODE_ACTIVE_BACKUP,
+        NETDEV_BOND_MODE_BALANCE_XOR,
+        NETDEV_BOND_MODE_BROADCAST,
+        NETDEV_BOND_MODE_802_3AD,
+        NETDEV_BOND_MODE_BALANCE_TLB,
+        NETDEV_BOND_MODE_BALANCE_ALB,
+        _NETDEV_BOND_MODE_MAX,
+        _NETDEV_BOND_MODE_INVALID = -1
+} BondMode;
+
+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_TUN,
+        NETDEV_KIND_TAP,
+        _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;
 
-        char *description;
-        char *name;
+        Condition *match_host;
+        Condition *match_virt;
+        Condition *match_kernel;
+        Condition *match_arch;
 
-        Link *link;
-        BridgeState state;
+        char *description;
+        char *ifname;
+        char *ifname_peer;
+        char *user_name;
+        char *group_name;
+        size_t mtu;
+        struct ether_addr *mac;
+        struct ether_addr *mac_peer;
+        NetDevKind kind;
+
+        uint64_t vlanid;
+        uint64_t vxlanid;
+        int32_t macvlan_mode;
+        int32_t bond_mode;
+
+        int ifindex;
+        NetDevState state;
+
+        bool tunnel_pmtudisc;
+        bool learning;
+        bool one_queue;
+        bool multi_queue;
+        bool packet_info;
+
+        unsigned ttl;
+        unsigned tos;
+        unsigned char family;
+        union in_addr_union local;
+        union in_addr_union remote;
+        union in_addr_union group;
 
-        LIST_HEAD(bridge_join_callback, callbacks);
+        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;
 
@@ -82,10 +175,30 @@ struct Network {
         char *match_driver;
         char *match_type;
         char *match_name;
+        Condition *match_host;
+        Condition *match_virt;
+        Condition *match_kernel;
+        Condition *match_arch;
 
         char *description;
-        Bridge *bridge;
-        bool dhcp;
+        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);
@@ -93,6 +206,9 @@ struct Network {
         Hashmap *addresses_by_section;
         Hashmap *routes_by_section;
 
+        LIST_HEAD(Address, dns);
+        LIST_HEAD(Address, ntp);
+
         LIST_FIELDS(Network, networks);
 };
 
@@ -102,16 +218,16 @@ struct Address {
 
         unsigned char family;
         unsigned char prefixlen;
+        unsigned char scope;
         char *label;
 
-        struct in_addr netmask;
+        struct in_addr broadcast;
+        struct ifa_cacheinfo cinfo;
 
-        union {
-                struct in_addr in;
-                struct in6_addr in6;
-        } in_addr;
+        union in_addr_union in_addr;
+        union in_addr_union in_addr_peer;
 
-        LIST_FIELDS(Address, static_addresses);
+        LIST_FIELDS(Address, addresses);
 };
 
 struct Route {
@@ -119,64 +235,105 @@ struct Route {
         uint64_t section;
 
         unsigned char family;
-        unsigned char dst_family;
         unsigned char dst_prefixlen;
+        unsigned char scope;
+        uint32_t metrics;
 
-        union {
-                struct in_addr in;
-                struct in6_addr in6;
-        } in_addr;
-
-        union {
-                struct in_addr in;
-                struct in6_addr in6;
-        } dst_addr;
+        union in_addr_union in_addr;
+        union in_addr_union dst_addr;
 
-        LIST_FIELDS(Route, static_routes);
+        LIST_FIELDS(Route, routes);
 };
 
 typedef enum LinkState {
-        LINK_STATE_JOINING_BRIDGE,
+        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;
 
-        Route *dhcp_route;
-        Address *dhcp_address;
-
         LinkState state;
+        LinkOperationalState operstate;
 
         unsigned addr_messages;
         unsigned route_messages;
+        unsigned enslaving;
 
-        sd_dhcp_client *dhcp;
+        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 *bridges;
+        Hashmap *netdevs;
         LIST_HEAD(Network, networks);
+        LIST_HEAD(AddressPool, address_pools);
 
         usec_t network_dirs_ts_usec;
 };
@@ -191,26 +348,62 @@ 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_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)
 
-/* Bridge */
+/* NetDev */
+
+#define VLANID_MAX 4094
+
+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_vlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
+int netdev_create_macvlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback);
+int netdev_create_dummy(NetDev *netdev, sd_rtnl_message_handler_t callback);
+int netdev_create_tuntap(NetDev *netdev);
+int netdev_create_bond(NetDev *netdev, sd_rtnl_message_handler_t callback);
+
 
-int bridge_load(Manager *manager);
+const char *netdev_kind_to_string(NetDevKind d) _const_;
+NetDevKind netdev_kind_from_string(const char *d) _pure_;
 
-void bridge_free(Bridge *bridge);
+const char *macvlan_mode_to_string(MacVlanMode d) _const_;
+MacVlanMode macvlan_mode_from_string(const char *d) _pure_;
 
-DEFINE_TRIVIAL_CLEANUP_FUNC(Bridge*, bridge_free);
-#define _cleanup_bridge_free_ _cleanup_(bridge_freep)
+const char *bond_mode_to_string(BondMode d) _const_;
+BondMode bond_mode_from_string(const char *d) _pure_;
 
-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);
+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);
+
+int config_parse_bond_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 */
 
@@ -221,22 +414,47 @@ 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_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_bridge(const char *unit, const char *filename, unsigned line,
+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);
 
-/* gperf */
+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);
 
-const struct ConfigPerfItem* network_gperf_lookup(const char *key, unsigned length);
+/* 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)
@@ -249,39 +467,83 @@ int config_parse_destination(const char *unit, const char *filename, unsigned li
                              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);
+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 */
 
-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);
+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);
 
-DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free);
-#define _cleanup_link_free_ _cleanup_(link_freep)
+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, link->ifname, ##__VA_ARGS__)
+#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__)
@@ -292,16 +554,16 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free);
 
 /* 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_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_bridge(level, bridge, ...) log_struct(level, "INTERFACE=%s", bridge->name, __VA_ARGS__)
+#define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__)
 
-#define BRIDGE(bridge) "INTERFACE=%s", bridge->name
+#define NETDEV(netdev) "INTERFACE=%s", netdev->ifname
 #define ADDRESS_FMT_VAL(address)            \
         (address).s_addr & 0xFF,            \
         ((address).s_addr >> 8) & 0xFF,     \