plugins/ethernet.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  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
  43 struct ethernet_data {
  44         int index;
  45         unsigned flags;
  46         unsigned int watch;
  47         struct connman_network *network;
  48 };
  49
  50 static int cable_probe(struct connman_network *network)
  51 {
  52         DBG("network %p", network);
  53
  54         return 0;
  55 }
  56
  57 static void cable_remove(struct connman_network *network)
  58 {
  59         DBG("network %p", network);
  60 }
  61
  62 static int cable_connect(struct connman_network *network)
  63 {
  64         DBG("network %p", network);
  65
  66         return 0;
  67 }
  68
  69 static int cable_disconnect(struct connman_network *network)
  70 {
  71         DBG("network %p", network);
  72
  73         return 0;
  74 }
  75
  76 static struct connman_network_driver cable_driver = {
  77         .name           = "cable",
  78         .type           = CONNMAN_NETWORK_TYPE_ETHERNET,
  79         .probe          = cable_probe,
  80         .remove         = cable_remove,
  81         .connect        = cable_connect,
  82         .disconnect     = cable_disconnect,
  83 };
  84
  85 static void add_network(struct connman_device *device)
  86 {
  87         struct connman_network *network;
  88         int index;
  89
  90         network = connman_network_create("carrier",
  91                                         CONNMAN_NETWORK_TYPE_ETHERNET);
  92         if (network == NULL)
  93                 return;
  94
  95         connman_network_register(network);
  96
  97         index = connman_device_get_index(device);
  98         connman_network_set_index(network, index);
  99
 100         connman_network_set_name(network, "Wired");
 101
 102         if (connman_device_add_network(device, network) < 0) {
 103                 connman_network_unregister(network);
 104                 connman_network_unref(network);
 105                 return;
 106         }
 107
 108         connman_network_set_available(network, TRUE);
 109
 110         connman_network_set_group(network, "cable");
 111
 112         connman_network_set_connected(network, TRUE);
 113 }
 114
 115 static void ethernet_newlink(unsigned flags, unsigned change, void *user_data)
 116 {
 117         struct connman_device *device = user_data;
 118         struct ethernet_data *ethernet = connman_device_get_data(device);
 119
 120         DBG("index %d flags %d change %d", ethernet->index, flags, change);
 121
 122         if ((ethernet->flags & IFF_UP) != (flags & IFF_UP)) {
 123                 if (flags & IFF_UP) {
 124                         DBG("power on");
 125                         connman_device_set_powered(device, TRUE);
 126                 } else {
 127                         DBG("power off");
 128                         connman_device_set_powered(device, FALSE);
 129                 }
 130         }
 131
 132         if ((ethernet->flags & IFF_LOWER_UP) != (flags & IFF_LOWER_UP)) {
 133                 if (flags & IFF_LOWER_UP) {
 134                         DBG("carrier on");
 135                         add_network(device);
 136                 } else {
 137                         DBG("carrier off");
 138                         connman_device_remove_all_networks(device);
 139                 }
 140         }
 141
 142         ethernet->flags = flags;
 143 }
 144
 145 static int ethernet_probe(struct connman_device *device)
 146 {
 147         struct ethernet_data *ethernet;
 148
 149         DBG("device %p", device);
 150
 151         ethernet = g_try_new0(struct ethernet_data, 1);
 152         if (ethernet == NULL)
 153                 return -ENOMEM;
 154
 155         connman_device_set_data(device, ethernet);
 156
 157         ethernet->index = connman_device_get_index(device);
 158         ethernet->flags = 0;
 159
 160         ethernet->watch = connman_rtnl_add_newlink_watch(ethernet->index,
 161                                                 ethernet_newlink, device);
 162
 163         return 0;
 164 }
 165
 166 static void ethernet_remove(struct connman_device *device)
 167 {
 168         struct ethernet_data *ethernet = connman_device_get_data(device);
 169
 170         DBG("device %p", device);
 171
 172         connman_device_set_data(device, NULL);
 173
 174         connman_rtnl_remove_watch(ethernet->watch);
 175
 176         connman_device_remove_all_networks(device);
 177
 178         g_free(ethernet);
 179 }
 180
 181 static int ethernet_enable(struct connman_device *device)
 182 {
 183         struct ethernet_data *ethernet = connman_device_get_data(device);
 184
 185         DBG("device %p", device);
 186
 187         return connman_inet_ifup(ethernet->index);
 188 }
 189
 190 static int ethernet_disable(struct connman_device *device)
 191 {
 192         struct ethernet_data *ethernet = connman_device_get_data(device);
 193
 194         DBG("device %p", device);
 195
 196         return connman_inet_ifdown(ethernet->index);
 197 }
 198
 199 static struct connman_device_driver ethernet_driver = {
 200         .name           = "ethernet",
 201         .type           = CONNMAN_DEVICE_TYPE_ETHERNET,
 202         .probe          = ethernet_probe,
 203         .remove         = ethernet_remove,
 204         .enable         = ethernet_enable,
 205         .disable        = ethernet_disable,
 206 };
 207
 208 static GList *cdc_interface_list = NULL;
 209
 210 static void tech_add_interface(struct connman_technology *technology,
 211                         int index, const char *name, const char *ident)
 212 {
 213         DBG("index %d name %s ident %s", index, name, ident);
 214
 215         if (g_list_find(cdc_interface_list,
 216                         GINT_TO_POINTER((int) index)) != NULL)
 217                 return;
 218
 219         cdc_interface_list = g_list_prepend(cdc_interface_list,
 220                                         (GINT_TO_POINTER((int) index)));
 221 }
 222
 223 static void tech_remove_interface(struct connman_technology *technology,
 224                                                                 int index)
 225 {
 226         DBG("index %d", index);
 227
 228         cdc_interface_list = g_list_remove(cdc_interface_list,
 229                                         GINT_TO_POINTER((int) index));
 230 }
 231
 232 static void enable_tethering(struct connman_technology *technology,
 233                                                 const char *bridge)
 234 {
 235         GList *list;
 236
 237         for (list = cdc_interface_list; list; list = list->next) {
 238                 int index = GPOINTER_TO_INT(list->data);
 239
 240                 connman_technology_tethering_notify(technology, TRUE);
 241
 242                 connman_inet_ifup(index);
 243
 244                 connman_inet_add_to_bridge(index, bridge);
 245         }
 246 }
 247
 248 static void disable_tethering(struct connman_technology *technology,
 249                                                 const char *bridge)
 250 {
 251         GList *list;
 252
 253         for (list = cdc_interface_list; list; list = list->next) {
 254                 int index = GPOINTER_TO_INT(list->data);
 255
 256                 connman_inet_remove_from_bridge(index, bridge);
 257
 258                 connman_inet_ifdown(index);
 259
 260                 connman_technology_tethering_notify(technology, FALSE);
 261         }
 262 }
 263
 264 static int tech_set_tethering(struct connman_technology *technology,
 265                                 const char *identifier, const char *passphrase,
 266                                 const char *bridge, connman_bool_t enabled)
 267 {
 268         DBG("bridge %s enabled %d", bridge, enabled);
 269
 270         if (enabled)
 271                 enable_tethering(technology, bridge);
 272         else
 273                 disable_tethering(technology, bridge);
 274
 275         return 0;
 276 }
 277
 278 static int tech_probe(struct connman_technology *technology)
 279 {
 280         return 0;
 281 }
 282
 283 static void tech_remove(struct connman_technology *technology)
 284 {
 285         g_list_free(cdc_interface_list);
 286
 287         cdc_interface_list = NULL;
 288 }
 289
 290 static struct connman_technology_driver tech_driver = {
 291         .name                   = "cdc_ethernet",
 292         .type                   = CONNMAN_SERVICE_TYPE_GADGET,
 293         .probe                  = tech_probe,
 294         .remove                 = tech_remove,
 295         .add_interface          = tech_add_interface,
 296         .remove_interface       = tech_remove_interface,
 297         .set_tethering          = tech_set_tethering,
 298 };
 299
 300 static int ethernet_init(void)
 301 {
 302         int err;
 303
 304         err = connman_network_driver_register(&cable_driver);
 305         if (err < 0)
 306                 return err;
 307
 308         err = connman_device_driver_register(&ethernet_driver);
 309         if (err < 0) {
 310                 connman_network_driver_unregister(&cable_driver);
 311                 return err;
 312         }
 313
 314         err = connman_technology_driver_register(&tech_driver);
 315         if (err < 0) {
 316                 connman_device_driver_unregister(&ethernet_driver);
 317                 connman_network_driver_unregister(&cable_driver);
 318                 return err;
 319         }
 320
 321         return 0;
 322 }
 323
 324 static void ethernet_exit(void)
 325 {
 326         connman_technology_driver_unregister(&tech_driver);
 327
 328         connman_network_driver_unregister(&cable_driver);
 329
 330         connman_device_driver_unregister(&ethernet_driver);
 331 }
 332
 333 CONNMAN_PLUGIN_DEFINE(ethernet, "Ethernet interface plugin", VERSION,
 334                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, ethernet_init, ethernet_exit)