402 lines
13 KiB
C
402 lines
13 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#pragma once
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#include <arpa/inet.h>
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#include "sd-event.h"
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#include "sd-rtnl.h"
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#include "sd-bus.h"
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#include "sd-dhcp-client.h"
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#include "sd-ipv4ll.h"
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#include "udev.h"
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#include "rtnl-util.h"
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#include "hashmap.h"
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#include "list.h"
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#include "condition-util.h"
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typedef struct NetDev NetDev;
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typedef struct Network Network;
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typedef struct Link Link;
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typedef struct Address Address;
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typedef struct Route Route;
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typedef struct Manager Manager;
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typedef struct netdev_enslave_callback netdev_enslave_callback;
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struct netdev_enslave_callback {
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sd_rtnl_message_handler_t callback;
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Link *link;
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LIST_FIELDS(netdev_enslave_callback, callbacks);
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};
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typedef enum MacVlanMode {
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NETDEV_MACVLAN_MODE_PRIVATE = MACVLAN_MODE_PRIVATE,
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NETDEV_MACVLAN_MODE_VEPA = MACVLAN_MODE_VEPA,
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NETDEV_MACVLAN_MODE_BRIDGE = MACVLAN_MODE_BRIDGE,
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NETDEV_MACVLAN_MODE_PASSTHRU = MACVLAN_MODE_PASSTHRU,
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_NETDEV_MACVLAN_MODE_MAX,
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_NETDEV_MACVLAN_MODE_INVALID = -1
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} MacVlanMode;
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typedef enum NetDevKind {
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NETDEV_KIND_BRIDGE,
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NETDEV_KIND_BOND,
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NETDEV_KIND_VLAN,
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NETDEV_KIND_MACVLAN,
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_NETDEV_KIND_MAX,
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_NETDEV_KIND_INVALID = -1
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} NetDevKind;
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typedef enum NetDevState {
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NETDEV_STATE_FAILED,
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NETDEV_STATE_CREATING,
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NETDEV_STATE_READY,
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_NETDEV_STATE_MAX,
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_NETDEV_STATE_INVALID = -1,
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} NetDevState;
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struct NetDev {
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Manager *manager;
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char *filename;
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Condition *match_host;
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Condition *match_virt;
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Condition *match_kernel;
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Condition *match_arch;
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char *description;
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char *name;
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NetDevKind kind;
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uint64_t vlanid;
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int32_t macvlan_mode;
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int ifindex;
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NetDevState state;
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LIST_HEAD(netdev_enslave_callback, callbacks);
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};
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struct Network {
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Manager *manager;
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char *filename;
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struct ether_addr *match_mac;
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char *match_path;
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char *match_driver;
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char *match_type;
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char *match_name;
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Condition *match_host;
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Condition *match_virt;
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Condition *match_kernel;
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Condition *match_arch;
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char *description;
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NetDev *bridge;
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NetDev *bond;
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Hashmap *vlans;
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Hashmap *macvlans;
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bool dhcp;
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bool dhcp_dns;
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bool dhcp_mtu;
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bool dhcp_hostname;
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bool dhcp_domainname;
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bool dhcp_critical;
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bool ipv4ll;
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LIST_HEAD(Address, static_addresses);
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LIST_HEAD(Route, static_routes);
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Address *dns;
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Hashmap *addresses_by_section;
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Hashmap *routes_by_section;
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LIST_FIELDS(Network, networks);
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};
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struct Address {
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Network *network;
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uint64_t section;
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unsigned char family;
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unsigned char prefixlen;
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unsigned char scope;
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char *label;
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struct in_addr broadcast;
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union {
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struct in_addr in;
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struct in6_addr in6;
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} in_addr;
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LIST_FIELDS(Address, static_addresses);
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};
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struct Route {
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Network *network;
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uint64_t section;
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unsigned char family;
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unsigned char dst_prefixlen;
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unsigned char scope;
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uint32_t metrics;
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union {
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struct in_addr in;
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struct in6_addr in6;
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} in_addr;
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union {
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struct in_addr in;
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struct in6_addr in6;
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} dst_addr;
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LIST_FIELDS(Route, static_routes);
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};
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typedef enum LinkState {
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LINK_STATE_ENSLAVING,
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LINK_STATE_SETTING_ADDRESSES,
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LINK_STATE_SETTING_ROUTES,
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LINK_STATE_CONFIGURED,
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LINK_STATE_FAILED,
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_LINK_STATE_MAX,
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_LINK_STATE_INVALID = -1
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} LinkState;
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struct Link {
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Manager *manager;
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uint64_t ifindex;
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char *ifname;
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char *state_file;
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struct ether_addr mac;
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unsigned flags;
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Network *network;
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LinkState state;
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unsigned addr_messages;
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unsigned route_messages;
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unsigned enslaving;
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sd_dhcp_client *dhcp_client;
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sd_dhcp_lease *dhcp_lease;
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uint16_t original_mtu;
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sd_ipv4ll *ipv4ll;
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};
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struct Manager {
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sd_rtnl *rtnl;
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sd_event *event;
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sd_bus *bus;
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struct udev *udev;
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struct udev_monitor *udev_monitor;
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sd_event_source *udev_event_source;
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sd_event_source *sigterm_event_source;
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sd_event_source *sigint_event_source;
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Hashmap *links;
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Hashmap *netdevs;
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LIST_HEAD(Network, networks);
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usec_t network_dirs_ts_usec;
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};
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extern const char* const network_dirs[];
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/* Manager */
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int manager_new(Manager **ret);
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void manager_free(Manager *m);
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int manager_load_config(Manager *m);
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bool manager_should_reload(Manager *m);
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int manager_udev_enumerate_links(Manager *m);
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int manager_udev_listen(Manager *m);
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int manager_rtnl_listen(Manager *m);
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int manager_bus_listen(Manager *m);
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int manager_update_resolv_conf(Manager *m);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
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#define _cleanup_manager_free_ _cleanup_(manager_freep)
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/* NetDev */
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int netdev_load(Manager *manager);
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void netdev_free(NetDev *netdev);
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DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_free);
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#define _cleanup_netdev_free_ _cleanup_(netdev_freep)
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int netdev_get(Manager *manager, const char *name, NetDev **ret);
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int netdev_set_ifindex(NetDev *netdev, int ifindex);
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int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb);
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const char *netdev_kind_to_string(NetDevKind d) _const_;
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NetDevKind netdev_kind_from_string(const char *d) _pure_;
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const char *macvlan_mode_to_string(MacVlanMode d) _const_;
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MacVlanMode macvlan_mode_from_string(const char *d) _pure_;
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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);
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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);
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/* gperf */
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const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, unsigned length);
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/* Network */
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int network_load(Manager *manager);
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void network_free(Network *network);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
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#define _cleanup_network_free_ _cleanup_(network_freep)
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int network_get(Manager *manager, struct udev_device *device, Network **ret);
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int network_apply(Manager *manager, Network *network, Link *link);
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int config_parse_bridge(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_bond(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_vlan(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_macvlan(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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/* gperf */
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const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);
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/* Route */
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int route_new_static(Network *network, unsigned section, Route **ret);
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int route_new_dynamic(Route **ret);
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void route_free(Route *route);
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int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
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int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
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#define _cleanup_route_free_ _cleanup_(route_freep)
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int config_parse_gateway(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_destination(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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/* Address */
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int address_new_static(Network *network, unsigned section, Address **ret);
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int address_new_dynamic(Address **ret);
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void address_free(Address *address);
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int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
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int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
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#define _cleanup_address_free_ _cleanup_(address_freep)
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int config_parse_dns(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_address(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_label(const char *unit, const char *filename, unsigned line,
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const char *section, unsigned section_line, const char *lvalue,
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int ltype, const char *rvalue, void *data, void *userdata);
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/* Link */
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int link_new(Manager *manager, struct udev_device *device, Link **ret);
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void link_free(Link *link);
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int link_get(Manager *m, int ifindex, Link **ret);
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int link_add(Manager *manager, struct udev_device *device, Link **ret);
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int link_configure(Link *link);
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int link_update(Link *link, sd_rtnl_message *message);
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int link_save(Link *link);
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const char* link_state_to_string(LinkState s) _const_;
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LinkState link_state_from_string(const char *s) _pure_;
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DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free);
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#define _cleanup_link_free_ _cleanup_(link_freep)
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/* Macros which append INTERFACE= to the message */
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#define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%s: " fmt, link->ifname, ##__VA_ARGS__)
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#define log_debug_link(link, ...) log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
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#define log_info_link(link, ...) log_full_link(LOG_INFO, link, ##__VA_ARGS__)
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#define log_notice_link(link, ...) log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
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#define log_warning_link(link, ...) log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
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#define log_error_link(link, ...) log_full_link(LOG_ERR, link, ##__VA_ARGS__)
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#define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)
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/* More macros which append INTERFACE= to the message */
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#define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->name, "%s: " fmt, netdev->name, ##__VA_ARGS__)
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#define log_debug_netdev(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__)
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#define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__)
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#define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__)
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#define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__)
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#define log_error_netdev(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__)
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#define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->name, __VA_ARGS__)
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#define NETDEV(netdev) "INTERFACE=%s", netdev->name
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#define ADDRESS_FMT_VAL(address) \
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(address).s_addr & 0xFF, \
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((address).s_addr >> 8) & 0xFF, \
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((address).s_addr >> 16) & 0xFF, \
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(address).s_addr >> 24
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