plugins/ethernet.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2013  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 bool 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 eth_network_probe(struct connman_network *network)
  54 {
  55         DBG("network %p", network);
  56
  57         return 0;
  58 }
  59
  60 static void eth_network_remove(struct connman_network *network)
  61 {
  62         DBG("network %p", network);
  63 }
  64
  65 static int eth_network_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 eth_network_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 eth_network_driver = {
  84         .name           = "cable",
  85         .type           = CONNMAN_NETWORK_TYPE_ETHERNET,
  86         .probe          = eth_network_probe,
  87         .remove         = eth_network_remove,
  88         .connect        = eth_network_connect,
  89         .disconnect     = eth_network_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)
 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)
 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)
 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 eth_dev_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)
 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 eth_dev_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 eth_dev_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 eth_dev_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 eth_dev_driver = {
 221         .name           = "ethernet",
 222         .type           = CONNMAN_DEVICE_TYPE_ETHERNET,
 223         .probe          = eth_dev_probe,
 224         .remove         = eth_dev_remove,
 225         .enable         = eth_dev_enable,
 226         .disable        = eth_dev_disable,
 227 };
 228
 229 static int eth_tech_probe(struct connman_technology *technology)
 230 {
 231         return 0;
 232 }
 233
 234 static void eth_tech_remove(struct connman_technology *technology)
 235 {
 236         DBG("");
 237 }
 238
 239 static GList *eth_interface_list = NULL;
 240
 241 static void eth_tech_add_interface(struct connman_technology *technology,
 242                         int index, const char *name, const char *ident)
 243 {
 244         DBG("index %d name %s ident %s", index, name, ident);
 245
 246         if (g_list_find(eth_interface_list, GINT_TO_POINTER((int)index)))
 247                 return;
 248
 249         eth_interface_list = g_list_prepend(eth_interface_list,
 250                                         (GINT_TO_POINTER((int) index)));
 251 }
 252
 253 static void eth_tech_remove_interface(struct connman_technology *technology,
 254                                                                 int index)
 255 {
 256         DBG("index %d", index);
 257
 258         eth_interface_list = g_list_remove(eth_interface_list,
 259                                         GINT_TO_POINTER((int) index));
 260 }
 261
 262 static void eth_tech_enable_tethering(struct connman_technology *technology,
 263                                                 const char *bridge)
 264 {
 265         GList *list;
 266         struct ethernet_data *ethernet;
 267
 268         for (list = eth_interface_list; list; list = list->next) {
 269                 int index = GPOINTER_TO_INT(list->data);
 270                 struct connman_device *device =
 271                         connman_device_find_by_index(index);
 272
 273                 if (device) {
 274                         ethernet = connman_device_get_data(device);
 275                         if (ethernet)
 276                                 remove_network(device, ethernet);
 277                 }
 278
 279                 connman_technology_tethering_notify(technology, true);
 280
 281                 connman_inet_ifup(index);
 282
 283                 connman_inet_add_to_bridge(index, bridge);
 284
 285                 eth_tethering = true;
 286         }
 287 }
 288
 289 static void eth_tech_disable_tethering(struct connman_technology *technology,
 290                                                 const char *bridge)
 291 {
 292         GList *list;
 293
 294         for (list = eth_interface_list; list; list = list->next) {
 295                 int index = GPOINTER_TO_INT(list->data);
 296                 struct connman_device *device =
 297                         connman_device_find_by_index(index);
 298
 299                 connman_inet_remove_from_bridge(index, bridge);
 300
 301                 connman_technology_tethering_notify(technology, false);
 302
 303                 if (device)
 304                         connman_device_reconnect_service(device);
 305
 306                 eth_tethering = false;
 307         }
 308 }
 309
 310 static int eth_tech_set_tethering(struct connman_technology *technology,
 311                                 const char *identifier, const char *passphrase,
 312                                 const char *bridge, bool enabled, bool hidden)
 313 {
 314         if (!connman_technology_is_tethering_allowed(
 315                         CONNMAN_SERVICE_TYPE_ETHERNET))
 316                 return 0;
 317
 318         DBG("bridge %s enabled %d", bridge, enabled);
 319
 320         if (enabled)
 321                 eth_tech_enable_tethering(technology, bridge);
 322         else
 323                 eth_tech_disable_tethering(technology, bridge);
 324
 325         return 0;
 326 }
 327
 328 static struct connman_technology_driver eth_tech_driver = {
 329         .name                   = "ethernet",
 330         .type                   = CONNMAN_SERVICE_TYPE_ETHERNET,
 331         .probe                  = eth_tech_probe,
 332         .remove                 = eth_tech_remove,
 333         .add_interface          = eth_tech_add_interface,
 334         .remove_interface       = eth_tech_remove_interface,
 335         .set_tethering          = eth_tech_set_tethering,
 336 };
 337
 338 static int ethernet_init(void)
 339 {
 340         int err;
 341
 342         err = connman_technology_driver_register(&eth_tech_driver);
 343         if (err < 0)
 344                 return err;
 345
 346         err = connman_network_driver_register(&eth_network_driver);
 347         if (err < 0)
 348                 return err;
 349
 350         err = connman_device_driver_register(&eth_dev_driver);
 351         if (err < 0) {
 352                 connman_network_driver_unregister(&eth_network_driver);
 353                 return err;
 354         }
 355
 356         return 0;
 357 }
 358
 359 static void ethernet_exit(void)
 360 {
 361         connman_technology_driver_unregister(&eth_tech_driver);
 362
 363         connman_network_driver_unregister(&eth_network_driver);
 364
 365         connman_device_driver_unregister(&eth_dev_driver);
 366 }
 367
 368 CONNMAN_PLUGIN_DEFINE(ethernet, "Ethernet interface plugin", VERSION,
 369                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, ethernet_init, ethernet_exit)