src/device.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 <string.h>
  28
  29 #include "connman.h"
  30
  31 static GSList *device_list = NULL;
  32 static gchar **device_filter = NULL;
  33 static gchar **nodevice_filter = NULL;
  34
  35 enum connman_pending_type {
  36         PENDING_NONE    = 0,
  37         PENDING_ENABLE  = 1,
  38         PENDING_DISABLE = 2,
  39 };
  40
  41 struct connman_device {
  42         gint refcount;
  43         enum connman_device_type type;
  44         enum connman_pending_type powered_pending;      /* Indicates a pending
  45                                                         enable/disable request */
  46         connman_bool_t powered;
  47         connman_bool_t scanning;
  48         connman_bool_t disconnected;
  49         connman_bool_t reconnect;
  50         connman_uint16_t scan_interval;
  51         connman_uint16_t backoff_interval;
  52         char *name;
  53         char *node;
  54         char *address;
  55         char *interface;
  56         char *ident;
  57         char *path;
  58         char *devname;
  59         int phyindex;
  60         int index;
  61         unsigned int connections;
  62         guint scan_timeout;
  63         guint pending_timeout;
  64
  65         struct connman_device_driver *driver;
  66         void *driver_data;
  67
  68         char *last_network;
  69         struct connman_network *network;
  70         GHashTable *networks;
  71 };
  72
  73 #define SCAN_INITIAL_DELAY 10
  74
  75 static gboolean device_scan_trigger(gpointer user_data)
  76 {
  77         struct connman_device *device = user_data;
  78
  79         DBG("device %p", device);
  80
  81         if (device->driver == NULL) {
  82                 device->scan_timeout = 0;
  83                 return FALSE;
  84         }
  85
  86         if (device->driver->scan)
  87                 device->driver->scan(device);
  88
  89         return TRUE;
  90 }
  91
  92 static void clear_scan_trigger(struct connman_device *device)
  93 {
  94         if (device->scan_timeout > 0) {
  95                 g_source_remove(device->scan_timeout);
  96                 device->scan_timeout = 0;
  97         }
  98 }
  99
 100 static void reset_scan_trigger(struct connman_device *device)
 101 {
 102         clear_scan_trigger(device);
 103
 104         if (device->scan_interval > 0) {
 105                 guint interval;
 106
 107                 if (g_hash_table_size(device->networks) == 0) {
 108                         if (device->backoff_interval >= device->scan_interval)
 109                                 device->backoff_interval = SCAN_INITIAL_DELAY;
 110                         interval = device->backoff_interval;
 111                 } else
 112                         interval = device->scan_interval;
 113
 114                 DBG("interval %d", interval);
 115
 116                 device->scan_timeout = g_timeout_add_seconds(interval,
 117                                         device_scan_trigger, device);
 118
 119                 device->backoff_interval *= 2;
 120                 if (device->backoff_interval > device->scan_interval)
 121                         device->backoff_interval = device->scan_interval;
 122         }
 123 }
 124
 125 static void force_scan_trigger(struct connman_device *device)
 126 {
 127         clear_scan_trigger(device);
 128
 129         device->scan_timeout = g_timeout_add_seconds(5,
 130                                         device_scan_trigger, device);
 131 }
 132
 133 void connman_device_schedule_scan(struct connman_device *device)
 134 {
 135         reset_scan_trigger(device);
 136 }
 137
 138 static const char *type2description(enum connman_device_type type)
 139 {
 140         switch (type) {
 141         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 142         case CONNMAN_DEVICE_TYPE_VENDOR:
 143                 break;
 144         case CONNMAN_DEVICE_TYPE_ETHERNET:
 145                 return "Ethernet";
 146         case CONNMAN_DEVICE_TYPE_WIFI:
 147                 return "Wireless";
 148         case CONNMAN_DEVICE_TYPE_WIMAX:
 149                 return "WiMAX";
 150         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 151                 return "Bluetooth";
 152         case CONNMAN_DEVICE_TYPE_GPS:
 153                 return "GPS";
 154         case CONNMAN_DEVICE_TYPE_CELLULAR:
 155                 return "Cellular";
 156         case CONNMAN_DEVICE_TYPE_GADGET:
 157                 return "Gadget";
 158
 159         }
 160
 161         return NULL;
 162 }
 163
 164 static const char *type2string(enum connman_device_type type)
 165 {
 166         switch (type) {
 167         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 168         case CONNMAN_DEVICE_TYPE_VENDOR:
 169                 break;
 170         case CONNMAN_DEVICE_TYPE_ETHERNET:
 171                 return "ethernet";
 172         case CONNMAN_DEVICE_TYPE_WIFI:
 173                 return "wifi";
 174         case CONNMAN_DEVICE_TYPE_WIMAX:
 175                 return "wimax";
 176         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 177                 return "bluetooth";
 178         case CONNMAN_DEVICE_TYPE_GPS:
 179                 return "gps";
 180         case CONNMAN_DEVICE_TYPE_CELLULAR:
 181                 return "cellular";
 182         case CONNMAN_DEVICE_TYPE_GADGET:
 183                 return "gadget";
 184
 185         }
 186
 187         return NULL;
 188 }
 189
 190 enum connman_service_type __connman_device_get_service_type(struct connman_device *device)
 191 {
 192         enum connman_device_type type = connman_device_get_type(device);
 193
 194         switch (type) {
 195         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 196         case CONNMAN_DEVICE_TYPE_VENDOR:
 197         case CONNMAN_DEVICE_TYPE_GPS:
 198                 break;
 199         case CONNMAN_DEVICE_TYPE_ETHERNET:
 200                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 201         case CONNMAN_DEVICE_TYPE_WIFI:
 202                 return CONNMAN_SERVICE_TYPE_WIFI;
 203         case CONNMAN_DEVICE_TYPE_WIMAX:
 204                 return CONNMAN_SERVICE_TYPE_WIMAX;
 205         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 206                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 207         case CONNMAN_DEVICE_TYPE_CELLULAR:
 208                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 209         case CONNMAN_DEVICE_TYPE_GADGET:
 210                 return CONNMAN_SERVICE_TYPE_GADGET;
 211
 212         }
 213
 214         return CONNMAN_SERVICE_TYPE_UNKNOWN;
 215 }
 216
 217 static gboolean device_pending_reset(gpointer user_data)
 218 {
 219         struct connman_device *device = user_data;
 220
 221         DBG("device %p", device);
 222
 223         /* Power request timedout, reset power pending state. */
 224         if (device->pending_timeout > 0) {
 225                 g_source_remove(device->pending_timeout);
 226                 device->pending_timeout = 0;
 227                 device->powered_pending = PENDING_NONE;
 228         }
 229
 230         return FALSE;
 231 }
 232
 233 int __connman_device_enable(struct connman_device *device)
 234 {
 235         int err;
 236
 237         DBG("device %p", device);
 238
 239         if (!device->driver || !device->driver->enable)
 240                 return -EOPNOTSUPP;
 241
 242         /* There is an ongoing power disable request. */
 243         if (device->powered_pending == PENDING_DISABLE)
 244                 return -EBUSY;
 245
 246         if (device->powered_pending == PENDING_ENABLE)
 247                 return -EALREADY;
 248
 249         if (device->powered_pending == PENDING_NONE && device->powered == TRUE)
 250                 return -EALREADY;
 251
 252         device->powered_pending = PENDING_ENABLE;
 253
 254         err = device->driver->enable(device);
 255         /*
 256          * device gets enabled right away.
 257          * Invoke the callback
 258          */
 259         if (err == 0) {
 260                 connman_device_set_powered(device, TRUE);
 261                 goto done;
 262         }
 263
 264         if (err == -EALREADY) {
 265                 /* If device is already powered, but connman is not updated */
 266                 connman_device_set_powered(device, TRUE);
 267                 goto done;
 268         }
 269         /*
 270          * if err == -EINPROGRESS, then the DBus call to the respective daemon
 271          * was successful. We set a 4 sec timeout so if the daemon never
 272          * returns a reply, we would reset the pending request.
 273          */
 274         if (err == -EINPROGRESS)
 275                 device->pending_timeout = g_timeout_add_seconds(4,
 276                                         device_pending_reset, device);
 277 done:
 278         return err;
 279 }
 280
 281 int __connman_device_disable(struct connman_device *device)
 282 {
 283         int err;
 284
 285         DBG("device %p", device);
 286
 287         if (!device->driver || !device->driver->disable)
 288                 return -EOPNOTSUPP;
 289
 290         /* Ongoing power enable request */
 291         if (device->powered_pending == PENDING_ENABLE)
 292                 return -EBUSY;
 293
 294         if (device->powered_pending == PENDING_DISABLE)
 295                 return -EALREADY;
 296
 297         if (device->powered_pending == PENDING_NONE && device->powered == FALSE)
 298                 return -EALREADY;
 299
 300         device->reconnect = FALSE;
 301
 302         clear_scan_trigger(device);
 303
 304         err = device->driver->disable(device);
 305         if (err == 0) {
 306                 connman_device_set_powered(device, FALSE);
 307                 goto done;
 308         }
 309
 310         if (err == -EALREADY) {
 311                 connman_device_set_powered(device, FALSE);
 312                 goto done;
 313         }
 314
 315         if (err == -EINPROGRESS)
 316                 device->pending_timeout = g_timeout_add_seconds(4,
 317                                         device_pending_reset, device);
 318 done:
 319         return err;
 320 }
 321
 322 static void probe_driver(struct connman_device_driver *driver)
 323 {
 324         GSList *list;
 325
 326         DBG("driver %p name %s", driver, driver->name);
 327
 328         for (list = device_list; list != NULL; list = list->next) {
 329                 struct connman_device *device = list->data;
 330
 331                 if (device->driver != NULL)
 332                         continue;
 333
 334                 if (driver->type != device->type)
 335                         continue;
 336
 337                 if (driver->probe(device) < 0)
 338                         continue;
 339
 340                 device->driver = driver;
 341
 342                 __connman_technology_add_device(device);
 343         }
 344 }
 345
 346 static void remove_device(struct connman_device *device)
 347 {
 348         DBG("device %p", device);
 349
 350         __connman_device_disable(device);
 351
 352         __connman_technology_remove_device(device);
 353
 354         if (device->driver->remove)
 355                 device->driver->remove(device);
 356
 357         device->driver = NULL;
 358 }
 359
 360 static void remove_driver(struct connman_device_driver *driver)
 361 {
 362         GSList *list;
 363
 364         DBG("driver %p name %s", driver, driver->name);
 365
 366         for (list = device_list; list != NULL; list = list->next) {
 367                 struct connman_device *device = list->data;
 368
 369                 if (device->driver == driver)
 370                         remove_device(device);
 371         }
 372 }
 373
 374 connman_bool_t __connman_device_has_driver(struct connman_device *device)
 375 {
 376         if (device == NULL || device->driver == NULL)
 377                 return FALSE;
 378
 379         return TRUE;
 380 }
 381
 382 static GSList *driver_list = NULL;
 383
 384 static gint compare_priority(gconstpointer a, gconstpointer b)
 385 {
 386         const struct connman_device_driver *driver1 = a;
 387         const struct connman_device_driver *driver2 = b;
 388
 389         return driver2->priority - driver1->priority;
 390 }
 391
 392 /**
 393  * connman_device_driver_register:
 394  * @driver: device driver definition
 395  *
 396  * Register a new device driver
 397  *
 398  * Returns: %0 on success
 399  */
 400 int connman_device_driver_register(struct connman_device_driver *driver)
 401 {
 402         DBG("driver %p name %s", driver, driver->name);
 403
 404         driver_list = g_slist_insert_sorted(driver_list, driver,
 405                                                         compare_priority);
 406         probe_driver(driver);
 407
 408         return 0;
 409 }
 410
 411 /**
 412  * connman_device_driver_unregister:
 413  * @driver: device driver definition
 414  *
 415  * Remove a previously registered device driver
 416  */
 417 void connman_device_driver_unregister(struct connman_device_driver *driver)
 418 {
 419         DBG("driver %p name %s", driver, driver->name);
 420
 421         driver_list = g_slist_remove(driver_list, driver);
 422
 423         remove_driver(driver);
 424 }
 425
 426 static void free_network(gpointer data)
 427 {
 428         struct connman_network *network = data;
 429
 430         DBG("network %p", network);
 431
 432         __connman_network_set_device(network, NULL);
 433
 434         connman_network_unref(network);
 435 }
 436
 437 static void device_destruct(struct connman_device *device)
 438 {
 439         DBG("device %p name %s", device, device->name);
 440
 441         clear_scan_trigger(device);
 442
 443         g_free(device->ident);
 444         g_free(device->node);
 445         g_free(device->name);
 446         g_free(device->address);
 447         g_free(device->interface);
 448         g_free(device->path);
 449         g_free(device->devname);
 450
 451         g_free(device->last_network);
 452
 453         g_hash_table_destroy(device->networks);
 454         device->networks = NULL;
 455
 456         g_free(device);
 457 }
 458
 459 /**
 460  * connman_device_create:
 461  * @node: device node name (for example an address)
 462  * @type: device type
 463  *
 464  * Allocate a new device of given #type and assign the #node name to it.
 465  *
 466  * Returns: a newly-allocated #connman_device structure
 467  */
 468 struct connman_device *connman_device_create(const char *node,
 469                                                 enum connman_device_type type)
 470 {
 471         struct connman_device *device;
 472         connman_bool_t bg_scan;
 473
 474         DBG("node %s type %d", node, type);
 475
 476         device = g_try_new0(struct connman_device, 1);
 477         if (device == NULL)
 478                 return NULL;
 479
 480         DBG("device %p", device);
 481
 482         device->refcount = 1;
 483
 484         bg_scan = connman_setting_get_bool("BackgroundScanning");
 485
 486         device->type = type;
 487         device->name = g_strdup(type2description(device->type));
 488
 489         device->phyindex = -1;
 490
 491         device->backoff_interval = SCAN_INITIAL_DELAY;
 492
 493         switch (type) {
 494         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 495         case CONNMAN_DEVICE_TYPE_ETHERNET:
 496         case CONNMAN_DEVICE_TYPE_WIMAX:
 497         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 498         case CONNMAN_DEVICE_TYPE_CELLULAR:
 499         case CONNMAN_DEVICE_TYPE_GPS:
 500         case CONNMAN_DEVICE_TYPE_GADGET:
 501         case CONNMAN_DEVICE_TYPE_VENDOR:
 502                 device->scan_interval = 0;
 503                 break;
 504         case CONNMAN_DEVICE_TYPE_WIFI:
 505                 if (bg_scan == TRUE)
 506                         device->scan_interval = 300;
 507                 else
 508                         device->scan_interval = 0;
 509                 break;
 510         }
 511
 512         device->networks = g_hash_table_new_full(g_str_hash, g_str_equal,
 513                                                 g_free, free_network);
 514
 515         device_list = g_slist_append(device_list, device);
 516
 517         return device;
 518 }
 519
 520 /**
 521  * connman_device_ref:
 522  * @device: device structure
 523  *
 524  * Increase reference counter of device
 525  */
 526 struct connman_device *connman_device_ref(struct connman_device *device)
 527 {
 528         DBG("%p", device);
 529
 530         g_atomic_int_inc(&device->refcount);
 531
 532         return device;
 533 }
 534
 535 /**
 536  * connman_device_unref:
 537  * @device: device structure
 538  *
 539  * Decrease reference counter of device
 540  */
 541 void connman_device_unref(struct connman_device *device)
 542 {
 543         if (g_atomic_int_dec_and_test(&device->refcount) == FALSE)
 544                 return;
 545
 546         if (device->driver) {
 547                 device->driver->remove(device);
 548                 device->driver = NULL;
 549         }
 550
 551         device_list = g_slist_remove(device_list, device);
 552
 553         device_destruct(device);
 554 }
 555
 556 const char *__connman_device_get_type(struct connman_device *device)
 557 {
 558         return type2string(device->type);
 559 }
 560
 561 /**
 562  * connman_device_get_type:
 563  * @device: device structure
 564  *
 565  * Get type of device
 566  */
 567 enum connman_device_type connman_device_get_type(struct connman_device *device)
 568 {
 569         return device->type;
 570 }
 571
 572 /**
 573  * connman_device_set_index:
 574  * @device: device structure
 575  * @index: index number
 576  *
 577  * Set index number of device
 578  */
 579 void connman_device_set_index(struct connman_device *device, int index)
 580 {
 581         device->index = index;
 582 }
 583
 584 /**
 585  * connman_device_get_index:
 586  * @device: device structure
 587  *
 588  * Get index number of device
 589  */
 590 int connman_device_get_index(struct connman_device *device)
 591 {
 592         return device->index;
 593 }
 594
 595 int __connman_device_get_phyindex(struct connman_device *device)
 596 {
 597         return device->phyindex;
 598 }
 599
 600 void __connman_device_set_phyindex(struct connman_device *device,
 601                                                         int phyindex)
 602 {
 603         device->phyindex = phyindex;
 604 }
 605
 606 /**
 607  * connman_device_set_interface:
 608  * @device: device structure
 609  * @interface: interface name
 610  *
 611  * Set interface name of device
 612  */
 613 void connman_device_set_interface(struct connman_device *device,
 614                                                 const char *interface)
 615 {
 616         g_free(device->devname);
 617         device->devname = g_strdup(interface);
 618
 619         g_free(device->interface);
 620         device->interface = g_strdup(interface);
 621
 622         if (device->name == NULL) {
 623                 const char *str = type2description(device->type);
 624                 if (str != NULL && device->interface != NULL)
 625                         device->name = g_strdup_printf("%s (%s)", str,
 626                                                         device->interface);
 627         }
 628 }
 629
 630 /**
 631  * connman_device_set_ident:
 632  * @device: device structure
 633  * @ident: unique identifier
 634  *
 635  * Set unique identifier of device
 636  */
 637 void connman_device_set_ident(struct connman_device *device,
 638                                                         const char *ident)
 639 {
 640         g_free(device->ident);
 641         device->ident = g_strdup(ident);
 642 }
 643
 644 const char *connman_device_get_ident(struct connman_device *device)
 645 {
 646         return device->ident;
 647 }
 648
 649 /**
 650  * connman_device_set_powered:
 651  * @device: device structure
 652  * @powered: powered state
 653  *
 654  * Change power state of device
 655  */
 656 int connman_device_set_powered(struct connman_device *device,
 657                                                 connman_bool_t powered)
 658 {
 659         enum connman_service_type type;
 660
 661         DBG("driver %p powered %d", device, powered);
 662
 663         if (device->powered == powered)
 664                 return -EALREADY;
 665
 666         if (device->pending_timeout) {
 667                 /* Reset pending request */
 668                 g_source_remove(device->pending_timeout);
 669                 device->pending_timeout = 0;
 670         }
 671
 672         device->powered_pending = PENDING_NONE;
 673
 674         device->powered = powered;
 675
 676         type = __connman_device_get_service_type(device);
 677
 678         if (device->powered == TRUE)
 679                 __connman_technology_enabled(type);
 680         else
 681                 __connman_technology_disabled(type);
 682
 683         if (powered == FALSE) {
 684                 device->connections = 0;
 685                 return 0;
 686         }
 687
 688         connman_device_set_disconnected(device, FALSE);
 689         device->scanning = FALSE;
 690
 691         reset_scan_trigger(device);
 692
 693         if (device->driver && device->driver->scan)
 694                 device->driver->scan(device);
 695
 696         return 0;
 697 }
 698
 699 static int device_scan(struct connman_device *device)
 700 {
 701         if (!device->driver || !device->driver->scan)
 702                 return -EOPNOTSUPP;
 703
 704         if (device->powered == FALSE)
 705                 return -ENOLINK;
 706
 707         reset_scan_trigger(device);
 708
 709         return device->driver->scan(device);
 710 }
 711
 712 int __connman_device_disconnect(struct connman_device *device)
 713 {
 714         GHashTableIter iter;
 715         gpointer key, value;
 716
 717         DBG("device %p", device);
 718
 719         connman_device_set_disconnected(device, TRUE);
 720
 721         g_hash_table_iter_init(&iter, device->networks);
 722
 723         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 724                 struct connman_network *network = value;
 725
 726                 if (connman_network_get_connecting(network) == TRUE) {
 727                         /*
 728                          * Skip network in the process of connecting.
 729                          * This is a workaround for WiFi networks serviced
 730                          * by the supplicant plugin that hold a reference
 731                          * to the network.  If we disconnect the network
 732                          * here then the referenced object will not be
 733                          * registered and usage (like launching DHCP client)
 734                          * will fail.  There is nothing to be gained by
 735                          * removing the network here anyway.
 736                          */
 737                         connman_warn("Skipping disconnect of %s, network is connecting.",
 738                                 connman_network_get_identifier(network));
 739                         continue;
 740                 }
 741
 742                 __connman_network_disconnect(network);
 743         }
 744
 745         return 0;
 746 }
 747
 748 static void mark_network_available(gpointer key, gpointer value,
 749                                                         gpointer user_data)
 750 {
 751         struct connman_network *network = value;
 752
 753         connman_network_set_available(network, TRUE);
 754 }
 755
 756 static void mark_network_unavailable(gpointer key, gpointer value,
 757                                                         gpointer user_data)
 758 {
 759         struct connman_network *network = value;
 760
 761         if (connman_network_get_connected(network) == TRUE)
 762                 return;
 763
 764         connman_network_set_available(network, FALSE);
 765 }
 766
 767 static gboolean remove_unavailable_network(gpointer key, gpointer value,
 768                                                         gpointer user_data)
 769 {
 770         struct connman_network *network = value;
 771
 772         if (connman_network_get_connected(network) == TRUE)
 773                 return FALSE;
 774
 775         if (connman_network_get_available(network) == TRUE)
 776                 return FALSE;
 777
 778         return TRUE;
 779 }
 780
 781 void __connman_device_cleanup_networks(struct connman_device *device)
 782 {
 783         g_hash_table_foreach_remove(device->networks,
 784                                         remove_unavailable_network, NULL);
 785 }
 786
 787 connman_bool_t __connman_device_scanning(struct connman_device *device)
 788 {
 789         return device->scanning;
 790 }
 791
 792 void connman_device_reset_scanning(struct connman_device *device)
 793 {
 794         device->scanning = FALSE;
 795
 796         g_hash_table_foreach(device->networks,
 797                                 mark_network_available, NULL);
 798
 799 }
 800
 801 /**
 802  * connman_device_set_scanning:
 803  * @device: device structure
 804  * @scanning: scanning state
 805  *
 806  * Change scanning state of device
 807  */
 808 int connman_device_set_scanning(struct connman_device *device,
 809                                                 connman_bool_t scanning)
 810 {
 811         DBG("device %p scanning %d", device, scanning);
 812
 813         if (!device->driver || !device->driver->scan)
 814                 return -EINVAL;
 815
 816         if (device->scanning == scanning)
 817                 return -EALREADY;
 818
 819         device->scanning = scanning;
 820
 821         if (scanning == TRUE) {
 822                 reset_scan_trigger(device);
 823
 824                 g_hash_table_foreach(device->networks,
 825                                         mark_network_unavailable, NULL);
 826
 827                 return 0;
 828         }
 829
 830         __connman_device_cleanup_networks(device);
 831
 832         if (device->connections > 0)
 833                 return 0;
 834
 835         __connman_service_auto_connect();
 836
 837         return 0;
 838 }
 839
 840 /**
 841  * connman_device_set_disconnected:
 842  * @device: device structure
 843  * @disconnected: disconnected state
 844  *
 845  * Change disconnected state of device (only for device with networks)
 846  */
 847 int connman_device_set_disconnected(struct connman_device *device,
 848                                                 connman_bool_t disconnected)
 849 {
 850         DBG("device %p disconnected %d", device, disconnected);
 851
 852         if (device->disconnected == disconnected)
 853                 return -EALREADY;
 854
 855         device->disconnected = disconnected;
 856
 857         if (disconnected == TRUE)
 858                 force_scan_trigger(device);
 859
 860         return 0;
 861 }
 862
 863 /**
 864  * connman_device_get_disconnected:
 865  * @device: device structure
 866  *
 867  * Get device disconnected state
 868  */
 869 connman_bool_t connman_device_get_disconnected(struct connman_device *device)
 870 {
 871         return device->disconnected;
 872 }
 873
 874 /**
 875  * connman_device_set_string:
 876  * @device: device structure
 877  * @key: unique identifier
 878  * @value: string value
 879  *
 880  * Set string value for specific key
 881  */
 882 int connman_device_set_string(struct connman_device *device,
 883                                         const char *key, const char *value)
 884 {
 885         DBG("device %p key %s value %s", device, key, value);
 886
 887         if (g_str_equal(key, "Address") == TRUE) {
 888                 g_free(device->address);
 889                 device->address = g_strdup(value);
 890         } else if (g_str_equal(key, "Name") == TRUE) {
 891                 g_free(device->name);
 892                 device->name = g_strdup(value);
 893         } else if (g_str_equal(key, "Node") == TRUE) {
 894                 g_free(device->node);
 895                 device->node = g_strdup(value);
 896         } else if (g_str_equal(key, "Path") == TRUE) {
 897                 g_free(device->path);
 898                 device->path = g_strdup(value);
 899         } else {
 900                 return -EINVAL;
 901         }
 902
 903         return 0;
 904 }
 905
 906 /**
 907  * connman_device_get_string:
 908  * @device: device structure
 909  * @key: unique identifier
 910  *
 911  * Get string value for specific key
 912  */
 913 const char *connman_device_get_string(struct connman_device *device,
 914                                                         const char *key)
 915 {
 916         DBG("device %p key %s", device, key);
 917
 918         if (g_str_equal(key, "Address") == TRUE)
 919                 return device->address;
 920         else if (g_str_equal(key, "Name") == TRUE)
 921                 return device->name;
 922         else if (g_str_equal(key, "Node") == TRUE)
 923                 return device->node;
 924         else if (g_str_equal(key, "Interface") == TRUE)
 925                 return device->interface;
 926         else if (g_str_equal(key, "Path") == TRUE)
 927                 return device->path;
 928
 929         return NULL;
 930 }
 931
 932 void __connman_device_increase_connections(struct connman_device *device)
 933 {
 934         if (device == NULL)
 935                 return;
 936
 937         device->connections++;
 938 }
 939
 940 void __connman_device_decrease_connections(struct connman_device *device)
 941 {
 942         if (device == NULL)
 943                 return;
 944
 945         device->connections--;
 946
 947         if (device->connections == 0)
 948                 device->backoff_interval = SCAN_INITIAL_DELAY;
 949 }
 950
 951 /**
 952  * connman_device_add_network:
 953  * @device: device structure
 954  * @network: network structure
 955  *
 956  * Add new network to the device
 957  */
 958 int connman_device_add_network(struct connman_device *device,
 959                                         struct connman_network *network)
 960 {
 961         const char *identifier = connman_network_get_identifier(network);
 962
 963         DBG("device %p network %p", device, network);
 964
 965         if (identifier == NULL)
 966                 return -EINVAL;
 967
 968         connman_network_ref(network);
 969
 970         __connman_network_set_device(network, device);
 971
 972         g_hash_table_insert(device->networks, g_strdup(identifier),
 973                                                                 network);
 974
 975         return 0;
 976 }
 977
 978 /**
 979  * connman_device_get_network:
 980  * @device: device structure
 981  * @identifier: network identifier
 982  *
 983  * Get network for given identifier
 984  */
 985 struct connman_network *connman_device_get_network(struct connman_device *device,
 986                                                         const char *identifier)
 987 {
 988         DBG("device %p identifier %s", device, identifier);
 989
 990         return g_hash_table_lookup(device->networks, identifier);
 991 }
 992
 993 /**
 994  * connman_device_remove_network:
 995  * @device: device structure
 996  * @identifier: network identifier
 997  *
 998  * Remove network for given identifier
 999  */
1000 int connman_device_remove_network(struct connman_device *device,
1001                                                 struct connman_network *network)
1002 {
1003         const char *identifier;
1004
1005         DBG("device %p network %p", device, network);
1006
1007         if (network == NULL)
1008                 return 0;
1009
1010         identifier = connman_network_get_identifier(network);
1011         g_hash_table_remove(device->networks, identifier);
1012
1013         return 0;
1014 }
1015
1016 void connman_device_remove_all_networks(struct connman_device *device)
1017 {
1018         g_hash_table_remove_all(device->networks);
1019 }
1020
1021 void __connman_device_set_network(struct connman_device *device,
1022                                         struct connman_network *network)
1023 {
1024         const char *name;
1025
1026         if (device == NULL)
1027                 return;
1028
1029         if (device->network == network)
1030                 return;
1031
1032         if (network != NULL) {
1033                 name = connman_network_get_string(network, "Name");
1034                 g_free(device->last_network);
1035                 device->last_network = g_strdup(name);
1036
1037                 device->network = network;
1038         } else {
1039                 g_free(device->last_network);
1040                 device->last_network = NULL;
1041
1042                 device->network = NULL;
1043         }
1044 }
1045
1046 void __connman_device_set_reconnect(struct connman_device *device,
1047                                                 connman_bool_t reconnect)
1048 {
1049         device->reconnect = reconnect;
1050 }
1051
1052 connman_bool_t  __connman_device_get_reconnect(
1053                                 struct connman_device *device)
1054 {
1055         return device->reconnect;
1056 }
1057
1058 static gboolean match_driver(struct connman_device *device,
1059                                         struct connman_device_driver *driver)
1060 {
1061         if (device->type == driver->type ||
1062                         driver->type == CONNMAN_DEVICE_TYPE_UNKNOWN)
1063                 return TRUE;
1064
1065         return FALSE;
1066 }
1067
1068 static int device_probe(struct connman_device *device)
1069 {
1070         GSList *list;
1071
1072         DBG("device %p name %s", device, device->name);
1073
1074         if (device->driver != NULL)
1075                 return -EALREADY;
1076
1077         for (list = driver_list; list; list = list->next) {
1078                 struct connman_device_driver *driver = list->data;
1079
1080                 if (match_driver(device, driver) == FALSE)
1081                         continue;
1082
1083                 DBG("driver %p name %s", driver, driver->name);
1084
1085                 if (driver->probe(device) == 0) {
1086                         device->driver = driver;
1087                         break;
1088                 }
1089         }
1090
1091         if (device->driver == NULL)
1092                 return 0;
1093
1094         return __connman_technology_add_device(device);
1095 }
1096
1097 static void device_remove(struct connman_device *device)
1098 {
1099         DBG("device %p name %s", device, device->name);
1100
1101         if (device->driver == NULL)
1102                 return;
1103
1104         remove_device(device);
1105 }
1106
1107 /**
1108  * connman_device_register:
1109  * @device: device structure
1110  *
1111  * Register device with the system
1112  */
1113 int connman_device_register(struct connman_device *device)
1114 {
1115         return device_probe(device);
1116 }
1117
1118 /**
1119  * connman_device_unregister:
1120  * @device: device structure
1121  *
1122  * Unregister device with the system
1123  */
1124 void connman_device_unregister(struct connman_device *device)
1125 {
1126         device_remove(device);
1127 }
1128
1129 /**
1130  * connman_device_get_data:
1131  * @device: device structure
1132  *
1133  * Get private device data pointer
1134  */
1135 void *connman_device_get_data(struct connman_device *device)
1136 {
1137         return device->driver_data;
1138 }
1139
1140 /**
1141  * connman_device_set_data:
1142  * @device: device structure
1143  * @data: data pointer
1144  *
1145  * Set private device data pointer
1146  */
1147 void connman_device_set_data(struct connman_device *device, void *data)
1148 {
1149         device->driver_data = data;
1150 }
1151
1152 struct connman_device *__connman_device_find_device(
1153                                 enum connman_service_type type)
1154 {
1155         GSList *list;
1156
1157         for (list = device_list; list != NULL; list = list->next) {
1158                 struct connman_device *device = list->data;
1159                 enum connman_service_type service_type =
1160                         __connman_device_get_service_type(device);
1161
1162                 if (service_type != type)
1163                         continue;
1164
1165                 return device;
1166         }
1167
1168         return NULL;
1169 }
1170
1171 int __connman_device_request_scan(enum connman_service_type type)
1172 {
1173         GSList *list;
1174         int err;
1175
1176         switch (type) {
1177         case CONNMAN_SERVICE_TYPE_UNKNOWN:
1178         case CONNMAN_SERVICE_TYPE_SYSTEM:
1179         case CONNMAN_SERVICE_TYPE_ETHERNET:
1180         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
1181         case CONNMAN_SERVICE_TYPE_CELLULAR:
1182         case CONNMAN_SERVICE_TYPE_GPS:
1183         case CONNMAN_SERVICE_TYPE_VPN:
1184         case CONNMAN_SERVICE_TYPE_GADGET:
1185                 return 0;
1186         case CONNMAN_SERVICE_TYPE_WIFI:
1187         case CONNMAN_SERVICE_TYPE_WIMAX:
1188                 break;
1189         }
1190
1191         for (list = device_list; list != NULL; list = list->next) {
1192                 struct connman_device *device = list->data;
1193                 enum connman_service_type service_type =
1194                         __connman_device_get_service_type(device);
1195
1196                 if (service_type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
1197                                 service_type != type) {
1198                         continue;
1199                 }
1200
1201                 err = device_scan(device);
1202                 if (err < 0 && err != -EINPROGRESS) {
1203                         DBG("err %d", err);
1204                         /* XXX maybe only a continue? */
1205                         return err;
1206                 }
1207         }
1208
1209         return 0;
1210 }
1211
1212 connman_bool_t __connman_device_isfiltered(const char *devname)
1213 {
1214         char **pattern;
1215
1216         if (device_filter == NULL)
1217                 goto nodevice;
1218
1219         for (pattern = device_filter; *pattern; pattern++) {
1220                 if (g_pattern_match_simple(*pattern, devname) == FALSE) {
1221                         DBG("ignoring device %s (match)", devname);
1222                         return TRUE;
1223                 }
1224         }
1225
1226 nodevice:
1227         if (g_pattern_match_simple("dummy*", devname) == TRUE) {
1228                 DBG("ignoring dummy networking devices");
1229                 return TRUE;
1230         }
1231
1232         if (nodevice_filter == NULL)
1233                 return FALSE;
1234
1235         for (pattern = nodevice_filter; *pattern; pattern++) {
1236                 if (g_pattern_match_simple(*pattern, devname) == TRUE) {
1237                         DBG("ignoring device %s (no match)", devname);
1238                         return TRUE;
1239                 }
1240         }
1241
1242         return FALSE;
1243 }
1244
1245 int __connman_device_init(const char *device, const char *nodevice)
1246 {
1247         DBG("");
1248
1249         if (device != NULL)
1250                 device_filter = g_strsplit(device, ",", -1);
1251
1252         if (nodevice != NULL)
1253                 nodevice_filter = g_strsplit(nodevice, ",", -1);
1254
1255         return 0;
1256 }
1257
1258 void __connman_device_cleanup(void)
1259 {
1260         DBG("");
1261
1262         g_strfreev(nodevice_filter);
1263         g_strfreev(device_filter);
1264 }