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_JOIN_BRIDGE,
 137         LINK_STATE_BRIDGE_JOINED,
 138         LINK_STATE_SET_ADDRESSES,
 139         LINK_STATE_ADDRESSES_SET,
 140         LINK_STATE_SET_ROUTES,
 141         LINK_STATE_CONFIGURED,
 142         LINK_STATE_FAILED,
 143         _LINK_STATE_MAX,
 144         _LINK_STATE_INVALID = -1
 145 } LinkState;
 146
 147 struct Link {
 148         Manager *manager;
 149
 150         uint64_t ifindex;
 151         char *ifname;
 152         struct ether_addr mac;
 153
 154         unsigned flags;
 155
 156         Network *network;
 157
 158         LinkState state;
 159
 160         unsigned rtnl_messages;
 161 };
 162
 163 struct Manager {
 164         sd_rtnl *rtnl;
 165         sd_event *event;
 166         struct udev *udev;
 167         struct udev_monitor *udev_monitor;
 168         sd_event_source *udev_event_source;
 169
 170         Hashmap *links;
 171         Hashmap *bridges;
 172         LIST_HEAD(Network, networks);
 173
 174         char **network_dirs;
 175         usec_t network_dirs_ts_usec;
 176 };
 177
 178 /* Manager */
 179
 180 int manager_new(Manager **ret);
 181 void manager_free(Manager *m);
 182
 183 int manager_load_config(Manager *m);
 184 bool manager_should_reload(Manager *m);
 185
 186 int manager_udev_enumerate_links(Manager *m);
 187 int manager_udev_listen(Manager *m);
 188
 189 int manager_rtnl_listen(Manager *m);
 190
 191 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
 192 #define _cleanup_manager_free_ _cleanup_(manager_freep)
 193
 194 /* Bridge */
 195
 196 int bridge_load(Manager *manager);
 197
 198 void bridge_free(Bridge *bridge);
 199
 200 DEFINE_TRIVIAL_CLEANUP_FUNC(Bridge*, bridge_free);
 201 #define _cleanup_bridge_free_ _cleanup_(bridge_freep)
 202
 203 int bridge_get(Manager *manager, const char *name, Bridge **ret);
 204 int bridge_set_link(Manager *m, Link *link);
 205 int bridge_join(Bridge *bridge, Link *link, sd_rtnl_message_handler_t cb);
 206
 207 /* Network */
 208
 209 int network_load(Manager *manager);
 210
 211 void network_free(Network *network);
 212
 213 DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
 214 #define _cleanup_network_free_ _cleanup_(network_freep)
 215
 216 int network_get(Manager *manager, struct udev_device *device, Network **ret);
 217 int network_apply(Manager *manager, Network *network, Link *link);
 218
 219 int config_parse_bridge(const char *unit, const char *filename, unsigned line,
 220                         const char *section, unsigned section_line, const char *lvalue,
 221                         int ltype, const char *rvalue, void *data, void *userdata);
 222
 223 /* gperf */
 224
 225 const struct ConfigPerfItem* network_gperf_lookup(const char *key, unsigned length);
 226
 227 /* Route */
 228 int route_new(Network *network, unsigned section, Route **ret);
 229 void route_free(Route *route);
 230 int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
 231
 232 DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
 233 #define _cleanup_route_free_ _cleanup_(route_freep)
 234
 235 int config_parse_gateway(const char *unit, const char *filename, unsigned line,
 236                          const char *section, unsigned section_line, const char *lvalue,
 237                          int ltype, const char *rvalue, void *data, void *userdata);
 238
 239 int config_parse_destination(const char *unit, const char *filename, unsigned line,
 240                              const char *section, unsigned section_line, const char *lvalue,
 241                              int ltype, const char *rvalue, void *data, void *userdata);
 242
 243 /* Address */
 244 int address_new(Network *network, unsigned section, Address **ret);
 245 void address_free(Address *address);
 246 int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
 247
 248 DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
 249 #define _cleanup_address_free_ _cleanup_(address_freep)
 250
 251 int config_parse_address(const char *unit, const char *filename, unsigned line,
 252                          const char *section, unsigned section_line, const char *lvalue,
 253                          int ltype, const char *rvalue, void *data, void *userdata);
 254
 255 int config_parse_label(const char *unit, const char *filename, unsigned line,
 256                        const char *section, unsigned section_line, const char *lvalue,
 257                        int ltype, const char *rvalue, void *data, void *userdata);
 258
 259 /* Link */
 260
 261 int link_new(Manager *manager, struct udev_device *device, Link **ret);
 262 void link_free(Link *link);
 263 int link_add(Manager *manager, struct udev_device *device);
 264 int link_configure(Link *link);
 265
 266 int link_update(Link *link, sd_rtnl_message *message);
 267
 268 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free);
 269 #define _cleanup_link_free_ _cleanup_(link_freep)