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