device: Combine multiple if statements into one block of code
[framework/connectivity/connman.git] / src / device.c
index cdd9118..d06bffd 100644 (file)
@@ -2,7 +2,7 @@
  *
  *  Connection Manager
  *
- *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
+ *  Copyright (C) 2007-2012  Intel Corporation. All rights reserved.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2 as
@@ -39,7 +39,7 @@ enum connman_pending_type {
 };
 
 struct connman_device {
-       gint refcount;
+       int refcount;
        enum connman_device_type type;
        enum connman_pending_type powered_pending;      /* Indicates a pending
                                                        enable/disable request */
@@ -47,8 +47,6 @@ struct connman_device {
        connman_bool_t scanning;
        connman_bool_t disconnected;
        connman_bool_t reconnect;
-       connman_uint16_t scan_interval;
-       connman_uint16_t backoff_interval;
        char *name;
        char *node;
        char *address;
@@ -58,8 +56,6 @@ struct connman_device {
        char *devname;
        int phyindex;
        int index;
-       unsigned int connections;
-       guint scan_timeout;
        guint pending_timeout;
 
        struct connman_device_driver *driver;
@@ -70,71 +66,14 @@ struct connman_device {
        GHashTable *networks;
 };
 
-#define SCAN_INITIAL_DELAY 10
-
-static gboolean device_scan_trigger(gpointer user_data)
+static void clear_pending_trigger(struct connman_device *device)
 {
-       struct connman_device *device = user_data;
-
-       DBG("device %p", device);
-
-       if (device->driver == NULL) {
-               device->scan_timeout = 0;
-               return FALSE;
-       }
-
-       if (device->driver->scan)
-               device->driver->scan(device);
-
-       return TRUE;
-}
-
-static void clear_scan_trigger(struct connman_device *device)
-{
-       if (device->scan_timeout > 0) {
-               g_source_remove(device->scan_timeout);
-               device->scan_timeout = 0;
-       }
-}
-
-static void reset_scan_trigger(struct connman_device *device)
-{
-       clear_scan_trigger(device);
-
-       if (device->scan_interval > 0) {
-               guint interval;
-
-               if (g_hash_table_size(device->networks) == 0) {
-                       if (device->backoff_interval >= device->scan_interval)
-                               device->backoff_interval = SCAN_INITIAL_DELAY;
-                       interval = device->backoff_interval;
-               } else
-                       interval = device->scan_interval;
-
-               DBG("interval %d", interval);
-
-               device->scan_timeout = g_timeout_add_seconds(interval,
-                                       device_scan_trigger, device);
-
-               device->backoff_interval *= 2;
-               if (device->backoff_interval > device->scan_interval)
-                       device->backoff_interval = device->scan_interval;
+       if (device->pending_timeout > 0) {
+               g_source_remove(device->pending_timeout);
+               device->pending_timeout = 0;
        }
 }
 
-static void force_scan_trigger(struct connman_device *device)
-{
-       clear_scan_trigger(device);
-
-       device->scan_timeout = g_timeout_add_seconds(5,
-                                       device_scan_trigger, device);
-}
-
-void connman_device_schedule_scan(struct connman_device *device)
-{
-       reset_scan_trigger(device);
-}
-
 static const char *type2description(enum connman_device_type type)
 {
        switch (type) {
@@ -221,11 +160,8 @@ static gboolean device_pending_reset(gpointer user_data)
        DBG("device %p", device);
 
        /* Power request timedout, reset power pending state. */
-       if (device->pending_timeout > 0) {
-               g_source_remove(device->pending_timeout);
-               device->pending_timeout = 0;
-               device->powered_pending = PENDING_NONE;
-       }
+       device->pending_timeout = 0;
+       device->powered_pending = PENDING_NONE;
 
        return FALSE;
 }
@@ -297,17 +233,21 @@ int __connman_device_disable(struct connman_device *device)
        if (device->powered_pending == PENDING_NONE && device->powered == FALSE)
                return -EALREADY;
 
+       device->powered_pending = PENDING_DISABLE;
        device->reconnect = FALSE;
 
-       clear_scan_trigger(device);
+       if (device->network) {
+               struct connman_service *service =
+                       __connman_service_lookup_from_network(device->network);
 
-       err = device->driver->disable(device);
-       if (err == 0) {
-               connman_device_set_powered(device, FALSE);
-               goto done;
+               if (service != NULL)
+                       __connman_service_disconnect(service);
+               else
+                       connman_network_set_connected(device->network, FALSE);
        }
 
-       if (err == -EALREADY) {
+       err = device->driver->disable(device);
+       if (err == 0 || err == -EALREADY) {
                connman_device_set_powered(device, FALSE);
                goto done;
        }
@@ -438,7 +378,7 @@ static void device_destruct(struct connman_device *device)
 {
        DBG("device %p name %s", device, device->name);
 
-       clear_scan_trigger(device);
+       clear_pending_trigger(device);
 
        g_free(device->ident);
        g_free(device->node);
@@ -469,7 +409,6 @@ struct connman_device *connman_device_create(const char *node,
                                                enum connman_device_type type)
 {
        struct connman_device *device;
-       connman_bool_t bg_scan;
 
        DBG("node %s type %d", node, type);
 
@@ -481,34 +420,11 @@ struct connman_device *connman_device_create(const char *node,
 
        device->refcount = 1;
 
-       bg_scan = connman_setting_get_bool("BackgroundScanning");
-
        device->type = type;
        device->name = g_strdup(type2description(device->type));
 
        device->phyindex = -1;
 
-       device->backoff_interval = SCAN_INITIAL_DELAY;
-
-       switch (type) {
-       case CONNMAN_DEVICE_TYPE_UNKNOWN:
-       case CONNMAN_DEVICE_TYPE_ETHERNET:
-       case CONNMAN_DEVICE_TYPE_WIMAX:
-       case CONNMAN_DEVICE_TYPE_BLUETOOTH:
-       case CONNMAN_DEVICE_TYPE_CELLULAR:
-       case CONNMAN_DEVICE_TYPE_GPS:
-       case CONNMAN_DEVICE_TYPE_GADGET:
-       case CONNMAN_DEVICE_TYPE_VENDOR:
-               device->scan_interval = 0;
-               break;
-       case CONNMAN_DEVICE_TYPE_WIFI:
-               if (bg_scan == TRUE)
-                       device->scan_interval = 300;
-               else
-                       device->scan_interval = 0;
-               break;
-       }
-
        device->networks = g_hash_table_new_full(g_str_hash, g_str_equal,
                                                g_free, free_network);
 
@@ -523,11 +439,13 @@ struct connman_device *connman_device_create(const char *node,
  *
  * Increase reference counter of device
  */
-struct connman_device *connman_device_ref(struct connman_device *device)
+struct connman_device *connman_device_ref_debug(struct connman_device *device,
+                               const char *file, int line, const char *caller)
 {
-       DBG("%p", device);
+       DBG("%p ref %d by %s:%d:%s()", device, device->refcount + 1,
+               file, line, caller);
 
-       g_atomic_int_inc(&device->refcount);
+       __sync_fetch_and_add(&device->refcount, 1);
 
        return device;
 }
@@ -538,9 +456,13 @@ struct connman_device *connman_device_ref(struct connman_device *device)
  *
  * Decrease reference counter of device
  */
-void connman_device_unref(struct connman_device *device)
+void connman_device_unref_debug(struct connman_device *device,
+                               const char *file, int line, const char *caller)
 {
-       if (g_atomic_int_dec_and_test(&device->refcount) == FALSE)
+       DBG("%p ref %d by %s:%d:%s()", device, device->refcount - 1,
+               file, line, caller);
+
+       if (__sync_fetch_and_sub(&device->refcount, 1) != 1)
                return;
 
        if (device->driver) {
@@ -663,31 +585,27 @@ int connman_device_set_powered(struct connman_device *device,
        if (device->powered == powered)
                return -EALREADY;
 
-       /* Reset pending request */
-       g_source_remove(device->pending_timeout);
-       device->pending_timeout = 0;
+       clear_pending_trigger(device);
+
        device->powered_pending = PENDING_NONE;
 
        device->powered = powered;
 
        type = __connman_device_get_service_type(device);
 
-       if (device->powered == TRUE)
-               __connman_technology_enabled(type);
-       else
+       if (device->powered == FALSE) {
                __connman_technology_disabled(type);
-
-       if (powered == FALSE) {
-               device->connections = 0;
                return 0;
        }
 
+       __connman_technology_enabled(type);
+
        connman_device_set_disconnected(device, FALSE);
        device->scanning = FALSE;
 
-       reset_scan_trigger(device);
-
-       if (device->driver && device->driver->scan)
+       if (device->driver && device->driver->scan_fast)
+               device->driver->scan_fast(device);
+       else if (device->driver && device->driver->scan)
                device->driver->scan(device);
 
        return 0;
@@ -701,8 +619,6 @@ static int device_scan(struct connman_device *device)
        if (device->powered == FALSE)
                return -ENOLINK;
 
-       reset_scan_trigger(device);
-
        return device->driver->scan(device);
 }
 
@@ -781,7 +697,7 @@ void __connman_device_cleanup_networks(struct connman_device *device)
                                        remove_unavailable_network, NULL);
 }
 
-connman_bool_t __connman_device_scanning(struct connman_device *device)
+connman_bool_t connman_device_get_scanning(struct connman_device *device)
 {
        return device->scanning;
 }
@@ -792,7 +708,6 @@ void connman_device_reset_scanning(struct connman_device *device)
 
        g_hash_table_foreach(device->networks,
                                mark_network_available, NULL);
-
 }
 
 /**
@@ -816,7 +731,7 @@ int connman_device_set_scanning(struct connman_device *device,
        device->scanning = scanning;
 
        if (scanning == TRUE) {
-               reset_scan_trigger(device);
+               __connman_technology_scan_started(device);
 
                g_hash_table_foreach(device->networks,
                                        mark_network_unavailable, NULL);
@@ -826,8 +741,7 @@ int connman_device_set_scanning(struct connman_device *device,
 
        __connman_device_cleanup_networks(device);
 
-       if (device->connections > 0)
-               return 0;
+       __connman_technology_scan_stopped(device);
 
        __connman_service_auto_connect();
 
@@ -851,9 +765,6 @@ int connman_device_set_disconnected(struct connman_device *device,
 
        device->disconnected = disconnected;
 
-       if (disconnected == TRUE)
-               force_scan_trigger(device);
-
        return 0;
 }
 
@@ -926,25 +837,6 @@ const char *connman_device_get_string(struct connman_device *device,
        return NULL;
 }
 
-void __connman_device_increase_connections(struct connman_device *device)
-{
-       if (device == NULL)
-               return;
-
-       device->connections++;
-}
-
-void __connman_device_decrease_connections(struct connman_device *device)
-{
-       if (device == NULL)
-               return;
-
-       device->connections--;
-
-       if (device->connections == 0)
-               device->backoff_interval = SCAN_INITIAL_DELAY;
-}
-
 /**
  * connman_device_add_network:
  * @device: device structure
@@ -966,7 +858,7 @@ int connman_device_add_network(struct connman_device *device,
 
        __connman_network_set_device(network, device);
 
-       g_hash_table_insert(device->networks, g_strdup(identifier),
+       g_hash_table_replace(device->networks, g_strdup(identifier),
                                                                network);
 
        return 0;
@@ -1062,7 +954,13 @@ static gboolean match_driver(struct connman_device *device,
        return FALSE;
 }
 
-static int device_probe(struct connman_device *device)
+/**
+ * connman_device_register:
+ * @device: device structure
+ *
+ * Register device with the system
+ */
+int connman_device_register(struct connman_device *device)
 {
        GSList *list;
 
@@ -1091,27 +989,6 @@ static int device_probe(struct connman_device *device)
        return __connman_technology_add_device(device);
 }
 
-static void device_remove(struct connman_device *device)
-{
-       DBG("device %p name %s", device, device->name);
-
-       if (device->driver == NULL)
-               return;
-
-       remove_device(device);
-}
-
-/**
- * connman_device_register:
- * @device: device structure
- *
- * Register device with the system
- */
-int connman_device_register(struct connman_device *device)
-{
-       return device_probe(device);
-}
-
 /**
  * connman_device_unregister:
  * @device: device structure
@@ -1120,7 +997,12 @@ int connman_device_register(struct connman_device *device)
  */
 void connman_device_unregister(struct connman_device *device)
 {
-       device_remove(device);
+       DBG("device %p name %s", device, device->name);
+
+       if (device->driver == NULL)
+               return;
+
+       remove_device(device);
 }
 
 /**
@@ -1167,6 +1049,8 @@ struct connman_device *__connman_device_find_device(
 
 int __connman_device_request_scan(enum connman_service_type type)
 {
+       connman_bool_t success = FALSE;
+       int last_err = -ENOSYS;
        GSList *list;
        int err;
 
@@ -1179,7 +1063,7 @@ int __connman_device_request_scan(enum connman_service_type type)
        case CONNMAN_SERVICE_TYPE_GPS:
        case CONNMAN_SERVICE_TYPE_VPN:
        case CONNMAN_SERVICE_TYPE_GADGET:
-               return 0;
+               return -EOPNOTSUPP;
        case CONNMAN_SERVICE_TYPE_WIFI:
        case CONNMAN_SERVICE_TYPE_WIMAX:
                break;
@@ -1196,14 +1080,36 @@ int __connman_device_request_scan(enum connman_service_type type)
                }
 
                err = device_scan(device);
-               if (err < 0 && err != -EINPROGRESS) {
-                       DBG("err %d", err);
-                       /* XXX maybe only a continue? */
-                       return err;
+               if (err == 0 || err == -EALREADY || err == -EINPROGRESS) {
+                       success = TRUE;
+               } else {
+                       last_err = err;
+                       DBG("device %p err %d", device, err);
                }
        }
 
-       return 0;
+       if (success == TRUE)
+               return 0;
+
+       return last_err;
+}
+
+int __connman_device_request_hidden_scan(struct connman_device *device,
+                               const char *ssid, unsigned int ssid_len,
+                               const char *identity, const char *passphrase,
+                               void *user_data)
+{
+       DBG("device %p", device);
+
+       if (device == NULL || device->driver == NULL ||
+                       device->driver->scan_hidden == NULL)
+               return -EINVAL;
+
+       if (device->scanning == TRUE)
+               return -EALREADY;
+
+       return device->driver->scan_hidden(device, ssid, ssid_len,
+                                       identity, passphrase, user_data);
 }
 
 connman_bool_t __connman_device_isfiltered(const char *devname)