src/network/networkd.h

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2013 Tom Gundersen <teg@jklm.no>
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #pragma once
  23
  24 #include <arpa/inet.h>
  25 #include <linux/rtnetlink.h>
  26
  27 #include "sd-event.h"
  28 #include "sd-rtnl.h"
  29 #include "udev.h"
  30
  31 #include "rtnl-util.h"
  32 #include "hashmap.h"
  33 #include "list.h"
  34
  35 typedef struct Bridge Bridge;
  36 typedef struct Network Network;
  37 typedef struct Link Link;
  38 typedef struct Address Address;
  39 typedef struct Route Route;
  40 typedef struct Manager Manager;
  41
  42 typedef struct bridge_join_callback bridge_join_callback;
  43
  44 struct bridge_join_callback {
  45         sd_rtnl_message_handler_t callback;
  46         Link *link;
  47
  48         LIST_FIELDS(bridge_join_callback, callbacks);
  49 };
  50
  51 typedef enum BridgeState {
  52         BRIDGE_STATE_FAILED,
  53         BRIDGE_STATE_CREATING,
  54         BRIDGE_STATE_CREATED,
  55         BRIDGE_STATE_READY,
  56         _BRIDGE_STATE_MAX,
  57         _BRIDGE_STATE_INVALID = -1,
  58 } BridgeState;
  59
  60 struct Bridge {
  61         Manager *manager;
  62
  63         char *filename;
  64
  65         char *description;
  66         char *name;
  67
  68         Link *link;
  69         BridgeState state;
  70
  71         LIST_HEAD(bridge_join_callback, callbacks);
  72 };
  73
  74 struct Network {
  75         Manager *manager;
  76
  77         char *filename;
  78
  79         struct ether_addr *match_mac;
  80         char *match_path;
  81         char *match_driver;
  82         char *match_type;
  83         char *match_name;
  84
  85         char *description;
  86         Bridge *bridge;
  87
  88         LIST_HEAD(Address, addresses);
  89         LIST_HEAD(Route, routes);
  90
  91         Hashmap *addresses_by_section;
  92         Hashmap *routes_by_section;
  93
  94         LIST_FIELDS(Network, networks);
  95 };
  96
  97 struct Address {
  98         Network *network;
  99         uint64_t section;
 100
 101         unsigned char family;
 102         unsigned char prefixlen;
 103         char *label;
 104
 105         struct in_addr netmask;
 106
 107         union {
 108                 struct in_addr in;
 109                 struct in6_addr in6;
 110         } in_addr;
 111
 112         LIST_FIELDS(Address, addresses);
 113 };
 114
 115 struct Route {
 116         Network *network;
 117         uint64_t section;
 118
 119         unsigned char family;
 120         unsigned char dst_prefixlen;
 121
 122         union {
 123                 struct in_addr in;
 124                 struct in6_addr in6;
 125         } in_addr;
 126
 127         union {
 128                 struct in_addr in;
 129                 struct in6_addr in6;
 130         } dst_addr;
 131
 132         LIST_FIELDS(Route, routes);
 133 };
 134
 135 typedef enum LinkState {
 136         LINK_STATE_JOINING_BRIDGE,
 137         LINK_STATE_SETTING_ADDRESSES,
 138         LINK_STATE_SETTING_ROUTES,
 139         LINK_STATE_CONFIGURED,
 140         LINK_STATE_FAILED,
 141         _LINK_STATE_MAX,
 142         _LINK_STATE_INVALID = -1
 143 } LinkState;
 144
 145 struct Link {
 146         Manager *manager;
 147
 148         uint64_t ifindex;
 149         char *ifname;
 150         struct ether_addr mac;
 151
 152         unsigned flags;
 153
 154         Network *network;
 155
 156         LinkState state;
 157
 158         unsigned rtnl_messages;
 159 };
 160
 161 struct Manager {
 162         sd_rtnl *rtnl;
 163         sd_event *event;
 164         struct udev *udev;
 165         struct udev_monitor *udev_monitor;
 166         sd_event_source *udev_event_source;
 167
 168         Hashmap *links;
 169         Hashmap *bridges;
 170         LIST_HEAD(Network, networks);
 171
 172         char **network_dirs;
 173         usec_t network_dirs_ts_usec;
 174 };
 175
 176 /* Manager */
 177
 178 int manager_new(Manager **ret);
 179 void manager_free(Manager *m);
 180
 181 int manager_load_config(Manager *m);
 182 bool manager_should_reload(Manager *m);
 183
 184 int manager_udev_enumerate_links(Manager *m);
 185 int manager_udev_listen(Manager *m);
 186
 187 int manager_rtnl_listen(Manager *m);
 188
 189 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
 190 #define _cleanup_manager_free_ _cleanup_(manager_freep)
 191
 192 /* Bridge */
 193
 194 int bridge_load(Manager *manager);
 195
 196 void bridge_free(Bridge *bridge);
 197
 198 DEFINE_TRIVIAL_CLEANUP_FUNC(Bridge*, bridge_free);
 199 #define _cleanup_bridge_free_ _cleanup_(bridge_freep)
 200
 201 int bridge_get(Manager *manager, const char *name, Bridge **ret);
 202 int bridge_set_link(Manager *m, Link *link);
 203 int bridge_join(Bridge *bridge, Link *link, sd_rtnl_message_handler_t cb);
 204
 205 /* Network */
 206
 207 int network_load(Manager *manager);
 208
 209 void network_free(Network *network);
 210
 211 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
 212 #define _cleanup_network_free_ _cleanup_(network_freep)
 213
 214 int network_get(Manager *manager, struct udev_device *device, Network **ret);
 215 int network_apply(Manager *manager, Network *network, Link *link);
 216
 217 int config_parse_bridge(const char *unit, const char *filename, unsigned line,
 218                         const char *section, unsigned section_line, const char *lvalue,
 219                         int ltype, const char *rvalue, void *data, void *userdata);
 220
 221 /* gperf */
 222
 223 const struct ConfigPerfItem* network_gperf_lookup(const char *key, unsigned length);
 224
 225 /* Route */
 226 int route_new(Network *network, unsigned section, Route **ret);
 227 void route_free(Route *route);
 228 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
 229
 230 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
 231 #define _cleanup_route_free_ _cleanup_(route_freep)
 232
 233 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
 234                          const char *section, unsigned section_line, const char *lvalue,
 235                          int ltype, const char *rvalue, void *data, void *userdata);
 236
 237 int config_parse_destination(const char *unit, const char *filename, unsigned line,
 238                              const char *section, unsigned section_line, const char *lvalue,
 239                              int ltype, const char *rvalue, void *data, void *userdata);
 240
 241 /* Address */
 242 int address_new(Network *network, unsigned section, Address **ret);
 243 void address_free(Address *address);
 244 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
 245 int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
 246
 247 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
 248 #define _cleanup_address_free_ _cleanup_(address_freep)
 249
 250 int config_parse_address(const char *unit, const char *filename, unsigned line,
 251                          const char *section, unsigned section_line, const char *lvalue,
 252                          int ltype, const char *rvalue, void *data, void *userdata);
 253
 254 int config_parse_label(const char *unit, const char *filename, unsigned line,
 255                        const char *section, unsigned section_line, const char *lvalue,
 256                        int ltype, const char *rvalue, void *data, void *userdata);
 257
 258 /* Link */
 259
 260 int link_new(Manager *manager, struct udev_device *device, Link **ret);
 261 void link_free(Link *link);
 262 int link_add(Manager *manager, struct udev_device *device);
 263 int link_configure(Link *link);
 264
 265 int link_update(Link *link, sd_rtnl_message *message);
 266
 267 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free);
 268 #define _cleanup_link_free_ _cleanup_(link_freep)