plugins/ethernet.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2012  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27 #include <net/if.h>
  28
  29 #ifndef IFF_LOWER_UP
  30 #define IFF_LOWER_UP    0x10000
  31 #endif
  32
  33 #include <glib.h>
  34
  35 #define CONNMAN_API_SUBJECT_TO_CHANGE
  36 #include <connman/technology.h>
  37 #include <connman/plugin.h>
  38 #include <connman/device.h>
  39 #include <connman/inet.h>
  40 #include <connman/rtnl.h>
  41 #include <connman/log.h>
  42 #include <connman/setting.h>
  43
  44 static connman_bool_t eth_tethering = FALSE;
  45
  46 struct ethernet_data {
  47         int index;
  48         unsigned flags;
  49         unsigned int watch;
  50         struct connman_network *network;
  51 };
  52
  53 static int cable_probe(struct connman_network *network)
  54 {
  55         DBG("network %p", network);
  56
  57         return 0;
  58 }
  59
  60 static void cable_remove(struct connman_network *network)
  61 {
  62         DBG("network %p", network);
  63 }
  64
  65 static int cable_connect(struct connman_network *network)
  66 {
  67         DBG("network %p", network);
  68
  69         connman_network_set_connected(network, TRUE);
  70
  71         return 0;
  72 }
  73
  74 static int cable_disconnect(struct connman_network *network)
  75 {
  76         DBG("network %p", network);
  77
  78         connman_network_set_connected(network, FALSE);
  79
  80         return 0;
  81 }
  82
  83 static struct connman_network_driver cable_driver = {
  84         .name           = "cable",
  85         .type           = CONNMAN_NETWORK_TYPE_ETHERNET,
  86         .probe          = cable_probe,
  87         .remove         = cable_remove,
  88         .connect        = cable_connect,
  89         .disconnect     = cable_disconnect,
  90 };
  91
  92 static void add_network(struct connman_device *device,
  93                         struct ethernet_data *ethernet)
  94 {
  95         struct connman_network *network;
  96         int index;
  97
  98         network = connman_network_create("carrier",
  99                                         CONNMAN_NETWORK_TYPE_ETHERNET);
 100         if (network == NULL)
 101                 return;
 102
 103         index = connman_device_get_index(device);
 104         connman_network_set_index(network, index);
 105
 106         connman_network_set_name(network, "Wired");
 107
 108         if (connman_device_add_network(device, network) < 0) {
 109                 connman_network_unref(network);
 110                 return;
 111         }
 112
 113         if (eth_tethering == FALSE)
 114                 /*
 115                  * Prevent service from starting the reconnect
 116                  * procedure as we do not want the DHCP client
 117                  * to run when tethering.
 118                  */
 119                 connman_network_set_group(network, "cable");
 120
 121         ethernet->network = network;
 122 }
 123
 124 static void remove_network(struct connman_device *device,
 125                                 struct ethernet_data *ethernet)
 126 {
 127         if (ethernet->network == NULL)
 128                 return;
 129
 130         connman_device_remove_network(device, ethernet->network);
 131         connman_network_unref(ethernet->network);
 132
 133         ethernet->network = NULL;
 134 }
 135
 136 static void ethernet_newlink(unsigned flags, unsigned change, void *user_data)
 137 {
 138         struct connman_device *device = user_data;
 139         struct ethernet_data *ethernet = connman_device_get_data(device);
 140
 141         DBG("index %d flags %d change %d", ethernet->index, flags, change);
 142
 143         if ((ethernet->flags & IFF_UP) != (flags & IFF_UP)) {
 144                 if (flags & IFF_UP) {
 145                         DBG("power on");
 146                         connman_device_set_powered(device, TRUE);
 147                 } else {
 148                         DBG("power off");
 149                         connman_device_set_powered(device, FALSE);
 150                 }
 151         }
 152
 153         if ((ethernet->flags & IFF_LOWER_UP) != (flags & IFF_LOWER_UP)) {
 154                 if (flags & IFF_LOWER_UP) {
 155                         DBG("carrier on");
 156                         add_network(device, ethernet);
 157                 } else {
 158                         DBG("carrier off");
 159                         remove_network(device, ethernet);
 160                 }
 161         }
 162
 163         ethernet->flags = flags;
 164 }
 165
 166 static int ethernet_probe(struct connman_device *device)
 167 {
 168         struct ethernet_data *ethernet;
 169
 170         DBG("device %p", device);
 171
 172         ethernet = g_try_new0(struct ethernet_data, 1);
 173         if (ethernet == NULL)
 174                 return -ENOMEM;
 175
 176         connman_device_set_data(device, ethernet);
 177
 178         ethernet->index = connman_device_get_index(device);
 179         ethernet->flags = 0;
 180
 181         ethernet->watch = connman_rtnl_add_newlink_watch(ethernet->index,
 182                                                 ethernet_newlink, device);
 183
 184         return 0;
 185 }
 186
 187 static void ethernet_remove(struct connman_device *device)
 188 {
 189         struct ethernet_data *ethernet = connman_device_get_data(device);
 190
 191         DBG("device %p", device);
 192
 193         connman_device_set_data(device, NULL);
 194
 195         connman_rtnl_remove_watch(ethernet->watch);
 196
 197         remove_network(device, ethernet);
 198
 199         g_free(ethernet);
 200 }
 201
 202 static int ethernet_enable(struct connman_device *device)
 203 {
 204         struct ethernet_data *ethernet = connman_device_get_data(device);
 205
 206         DBG("device %p", device);
 207
 208         return connman_inet_ifup(ethernet->index);
 209 }
 210
 211 static int ethernet_disable(struct connman_device *device)
 212 {
 213         struct ethernet_data *ethernet = connman_device_get_data(device);
 214
 215         DBG("device %p", device);
 216
 217         return connman_inet_ifdown(ethernet->index);
 218 }
 219
 220 static struct connman_device_driver ethernet_driver = {
 221         .name           = "ethernet",
 222         .type           = CONNMAN_DEVICE_TYPE_ETHERNET,
 223         .probe          = ethernet_probe,
 224         .remove         = ethernet_remove,
 225         .enable         = ethernet_enable,
 226         .disable        = ethernet_disable,
 227 };
 228
 229 static GList *cdc_interface_list = NULL;
 230
 231 static void tech_add_interface(struct connman_technology *technology,
 232                         int index, const char *name, const char *ident)
 233 {
 234         DBG("index %d name %s ident %s", index, name, ident);
 235
 236         if (g_list_find(cdc_interface_list,
 237                         GINT_TO_POINTER((int) index)) != NULL)
 238                 return;
 239
 240         cdc_interface_list = g_list_prepend(cdc_interface_list,
 241                                         (GINT_TO_POINTER((int) index)));
 242 }
 243
 244 static void tech_remove_interface(struct connman_technology *technology,
 245                                                                 int index)
 246 {
 247         DBG("index %d", index);
 248
 249         cdc_interface_list = g_list_remove(cdc_interface_list,
 250                                         GINT_TO_POINTER((int) index));
 251 }
 252
 253 static void enable_tethering(struct connman_technology *technology,
 254                                                 const char *bridge)
 255 {
 256         GList *list;
 257
 258         for (list = cdc_interface_list; list; list = list->next) {
 259                 int index = GPOINTER_TO_INT(list->data);
 260
 261                 connman_technology_tethering_notify(technology, TRUE);
 262
 263                 connman_inet_ifup(index);
 264
 265                 connman_inet_add_to_bridge(index, bridge);
 266         }
 267 }
 268
 269 static void disable_tethering(struct connman_technology *technology,
 270                                                 const char *bridge)
 271 {
 272         GList *list;
 273
 274         for (list = cdc_interface_list; list; list = list->next) {
 275                 int index = GPOINTER_TO_INT(list->data);
 276
 277                 connman_inet_remove_from_bridge(index, bridge);
 278
 279                 connman_inet_ifdown(index);
 280
 281                 connman_technology_tethering_notify(technology, FALSE);
 282         }
 283 }
 284
 285 static int tech_set_tethering(struct connman_technology *technology,
 286                                 const char *identifier, const char *passphrase,
 287                                 const char *bridge, connman_bool_t enabled)
 288 {
 289         DBG("bridge %s enabled %d", bridge, enabled);
 290
 291         if (enabled)
 292                 enable_tethering(technology, bridge);
 293         else
 294                 disable_tethering(technology, bridge);
 295
 296         return 0;
 297 }
 298
 299 static int tech_probe(struct connman_technology *technology)
 300 {
 301         return 0;
 302 }
 303
 304 static void tech_remove(struct connman_technology *technology)
 305 {
 306         g_list_free(cdc_interface_list);
 307
 308         cdc_interface_list = NULL;
 309 }
 310
 311 static struct connman_technology_driver tech_driver = {
 312         .name                   = "cdc_ethernet",
 313         .type                   = CONNMAN_SERVICE_TYPE_GADGET,
 314         .probe                  = tech_probe,
 315         .remove                 = tech_remove,
 316         .add_interface          = tech_add_interface,
 317         .remove_interface       = tech_remove_interface,
 318         .set_tethering          = tech_set_tethering,
 319 };
 320
 321 static int eth_probe(struct connman_technology *technology)
 322 {
 323         return 0;
 324 }
 325
 326 static void eth_remove(struct connman_technology *technology)
 327 {
 328         DBG("");
 329 }
 330
 331 static GList *eth_interface_list = NULL;
 332
 333 static void eth_add_interface(struct connman_technology *technology,
 334                         int index, const char *name, const char *ident)
 335 {
 336         DBG("index %d name %s ident %s", index, name, ident);
 337
 338         if (g_list_find(eth_interface_list,
 339                         GINT_TO_POINTER((int) index)) != NULL)
 340                 return;
 341
 342         eth_interface_list = g_list_prepend(eth_interface_list,
 343                                         (GINT_TO_POINTER((int) index)));
 344 }
 345
 346 static void eth_remove_interface(struct connman_technology *technology,
 347                                                                 int index)
 348 {
 349         DBG("index %d", index);
 350
 351         eth_interface_list = g_list_remove(eth_interface_list,
 352                                         GINT_TO_POINTER((int) index));
 353 }
 354
 355 static void eth_enable_tethering(struct connman_technology *technology,
 356                                                 const char *bridge)
 357 {
 358         GList *list;
 359
 360         for (list = eth_interface_list; list; list = list->next) {
 361                 int index = GPOINTER_TO_INT(list->data);
 362                 struct connman_device *device =
 363                         connman_device_find_by_index(index);
 364
 365                 if (device != NULL)
 366                         connman_device_disconnect_service(device);
 367
 368                 connman_technology_tethering_notify(technology, TRUE);
 369
 370                 connman_inet_ifup(index);
 371
 372                 connman_inet_add_to_bridge(index, bridge);
 373
 374                 eth_tethering = TRUE;
 375         }
 376 }
 377
 378 static void eth_disable_tethering(struct connman_technology *technology,
 379                                                 const char *bridge)
 380 {
 381         GList *list;
 382
 383         for (list = eth_interface_list; list; list = list->next) {
 384                 int index = GPOINTER_TO_INT(list->data);
 385                 struct connman_device *device =
 386                         connman_device_find_by_index(index);
 387
 388                 connman_inet_remove_from_bridge(index, bridge);
 389
 390                 connman_inet_ifdown(index);
 391
 392                 connman_technology_tethering_notify(technology, FALSE);
 393
 394                 if (device != NULL)
 395                         connman_device_reconnect_service(device);
 396
 397                 eth_tethering = FALSE;
 398         }
 399 }
 400
 401 static int eth_set_tethering(struct connman_technology *technology,
 402                                 const char *identifier, const char *passphrase,
 403                                 const char *bridge, connman_bool_t enabled)
 404 {
 405         if (connman_technology_is_tethering_allowed(
 406                                 CONNMAN_SERVICE_TYPE_ETHERNET) == FALSE)
 407                 return 0;
 408
 409         DBG("bridge %s enabled %d", bridge, enabled);
 410
 411         if (enabled)
 412                 eth_enable_tethering(technology, bridge);
 413         else
 414                 eth_disable_tethering(technology, bridge);
 415
 416         return 0;
 417 }
 418
 419 static struct connman_technology_driver eth_driver = {
 420         .name                   = "ethernet",
 421         .type                   = CONNMAN_SERVICE_TYPE_ETHERNET,
 422         .probe                  = eth_probe,
 423         .remove                 = eth_remove,
 424         .add_interface          = eth_add_interface,
 425         .remove_interface       = eth_remove_interface,
 426         .set_tethering          = eth_set_tethering,
 427 };
 428
 429 static int ethernet_init(void)
 430 {
 431         int err;
 432
 433         err = connman_technology_driver_register(&eth_driver);
 434         if (err < 0)
 435                 return err;
 436
 437         err = connman_network_driver_register(&cable_driver);
 438         if (err < 0)
 439                 return err;
 440
 441         err = connman_device_driver_register(&ethernet_driver);
 442         if (err < 0) {
 443                 connman_network_driver_unregister(&cable_driver);
 444                 return err;
 445         }
 446
 447         err = connman_technology_driver_register(&tech_driver);
 448         if (err < 0) {
 449                 connman_device_driver_unregister(&ethernet_driver);
 450                 connman_network_driver_unregister(&cable_driver);
 451                 return err;
 452         }
 453
 454         return 0;
 455 }
 456
 457 static void ethernet_exit(void)
 458 {
 459         connman_technology_driver_unregister(&eth_driver);
 460
 461         connman_technology_driver_unregister(&tech_driver);
 462
 463         connman_network_driver_unregister(&cable_driver);
 464
 465         connman_device_driver_unregister(&ethernet_driver);
 466 }
 467
 468 CONNMAN_PLUGIN_DEFINE(ethernet, "Ethernet interface plugin", VERSION,
 469                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, ethernet_init, ethernet_exit)