X-Git-Url: https://git.stricted.de/?a=blobdiff_plain;f=net%2Fbluetooth%2Fhci_core.c;h=45e2d2a72b15cb257bcccd8a93178a9da881c39e;hb=650f726d16a3f25153d785b531516f6e90d2014f;hp=845da3ee56a0d3966bdeb5ab627ef3dc49c8dead;hpb=7400c12eb069df781894a94dfa5c865f3fe3e2d4;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 845da3ee56a0..45e2d2a72b15 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -55,7 +55,7 @@
 
 #define AUTO_OFF_TIMEOUT 2000
 
-int enable_hs;
+bool enable_hs;
 
 static void hci_rx_work(struct work_struct *work);
 static void hci_cmd_work(struct work_struct *work);
@@ -355,72 +355,199 @@ struct hci_dev *hci_dev_get(int index)
 }
 
 /* ---- Inquiry support ---- */
-static void inquiry_cache_flush(struct hci_dev *hdev)
+
+bool hci_discovery_active(struct hci_dev *hdev)
 {
-	struct inquiry_cache *cache = &hdev->inq_cache;
-	struct inquiry_entry *next  = cache->list, *e;
+	struct discovery_state *discov = &hdev->discovery;
+
+	if (discov->state == DISCOVERY_INQUIRY ||
+					discov->state == DISCOVERY_RESOLVING)
+		return true;
+
+	return false;
+}
+
+void hci_discovery_set_state(struct hci_dev *hdev, int state)
+{
+	BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state);
+
+	if (hdev->discovery.state == state)
+		return;
+
+	switch (state) {
+	case DISCOVERY_STOPPED:
+		mgmt_discovering(hdev, 0);
+		break;
+	case DISCOVERY_STARTING:
+		break;
+	case DISCOVERY_INQUIRY:
+		mgmt_discovering(hdev, 1);
+		break;
+	case DISCOVERY_RESOLVING:
+		break;
+	case DISCOVERY_STOPPING:
+		break;
+	}
+
+	hdev->discovery.state = state;
+}
 
-	BT_DBG("cache %p", cache);
+static void inquiry_cache_flush(struct hci_dev *hdev)
+{
+	struct discovery_state *cache = &hdev->discovery;
+	struct inquiry_entry *p, *n;
 
-	cache->list = NULL;
-	while ((e = next)) {
-		next = e->next;
-		kfree(e);
+	list_for_each_entry_safe(p, n, &cache->all, all) {
+		list_del(&p->all);
+		kfree(p);
 	}
+
+	INIT_LIST_HEAD(&cache->unknown);
+	INIT_LIST_HEAD(&cache->resolve);
+	cache->state = DISCOVERY_STOPPED;
 }
 
 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr)
 {
-	struct inquiry_cache *cache = &hdev->inq_cache;
+	struct discovery_state *cache = &hdev->discovery;
+	struct inquiry_entry *e;
+
+	BT_DBG("cache %p, %s", cache, batostr(bdaddr));
+
+	list_for_each_entry(e, &cache->all, all) {
+		if (!bacmp(&e->data.bdaddr, bdaddr))
+			return e;
+	}
+
+	return NULL;
+}
+
+struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
+							bdaddr_t *bdaddr)
+{
+	struct discovery_state *cache = &hdev->discovery;
 	struct inquiry_entry *e;
 
 	BT_DBG("cache %p, %s", cache, batostr(bdaddr));
 
-	for (e = cache->list; e; e = e->next)
+	list_for_each_entry(e, &cache->unknown, list) {
+		if (!bacmp(&e->data.bdaddr, bdaddr))
+			return e;
+	}
+
+	return NULL;
+}
+
+struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
+							bdaddr_t *bdaddr,
+							int state)
+{
+	struct discovery_state *cache = &hdev->discovery;
+	struct inquiry_entry *e;
+
+	BT_DBG("cache %p bdaddr %s state %d", cache, batostr(bdaddr), state);
+
+	list_for_each_entry(e, &cache->resolve, list) {
+		if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state)
+			return e;
 		if (!bacmp(&e->data.bdaddr, bdaddr))
+			return e;
+	}
+
+	return NULL;
+}
+
+void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
+						struct inquiry_entry *ie)
+{
+	struct discovery_state *cache = &hdev->discovery;
+	struct list_head *pos = &cache->resolve;
+	struct inquiry_entry *p;
+
+	list_del(&ie->list);
+
+	list_for_each_entry(p, &cache->resolve, list) {
+		if (p->name_state != NAME_PENDING &&
+				abs(p->data.rssi) >= abs(ie->data.rssi))
 			break;
-	return e;
+		pos = &p->list;
+	}
+
+	list_add(&ie->list, pos);
 }
 
-void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data)
+bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
+							bool name_known)
 {
-	struct inquiry_cache *cache = &hdev->inq_cache;
+	struct discovery_state *cache = &hdev->discovery;
 	struct inquiry_entry *ie;
 
 	BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr));
 
 	ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr);
-	if (!ie) {
-		/* Entry not in the cache. Add new one. */
-		ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC);
-		if (!ie)
-			return;
+	if (ie) {
+		if (ie->name_state == NAME_NEEDED &&
+						data->rssi != ie->data.rssi) {
+			ie->data.rssi = data->rssi;
+			hci_inquiry_cache_update_resolve(hdev, ie);
+		}
 
-		ie->next = cache->list;
-		cache->list = ie;
+		goto update;
+	}
+
+	/* Entry not in the cache. Add new one. */
+	ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC);
+	if (!ie)
+		return false;
+
+	list_add(&ie->all, &cache->all);
+
+	if (name_known) {
+		ie->name_state = NAME_KNOWN;
+	} else {
+		ie->name_state = NAME_NOT_KNOWN;
+		list_add(&ie->list, &cache->unknown);
+	}
+
+update:
+	if (name_known && ie->name_state != NAME_KNOWN &&
+					ie->name_state != NAME_PENDING) {
+		ie->name_state = NAME_KNOWN;
+		list_del(&ie->list);
 	}
 
 	memcpy(&ie->data, data, sizeof(*data));
 	ie->timestamp = jiffies;
 	cache->timestamp = jiffies;
+
+	if (ie->name_state == NAME_NOT_KNOWN)
+		return false;
+
+	return true;
 }
 
 static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf)
 {
-	struct inquiry_cache *cache = &hdev->inq_cache;
+	struct discovery_state *cache = &hdev->discovery;
 	struct inquiry_info *info = (struct inquiry_info *) buf;
 	struct inquiry_entry *e;
 	int copied = 0;
 
-	for (e = cache->list; e && copied < num; e = e->next, copied++) {
+	list_for_each_entry(e, &cache->all, all) {
 		struct inquiry_data *data = &e->data;
+
+		if (copied >= num)
+			break;
+
 		bacpy(&info->bdaddr, &data->bdaddr);
 		info->pscan_rep_mode	= data->pscan_rep_mode;
 		info->pscan_period_mode	= data->pscan_period_mode;
 		info->pscan_mode	= data->pscan_mode;
 		memcpy(info->dev_class, data->dev_class, 3);
 		info->clock_offset	= data->clock_offset;
+
 		info++;
+		copied++;
 	}
 
 	BT_DBG("cache %p, copied %d", cache, copied);
@@ -567,7 +694,7 @@ int hci_dev_open(__u16 dev)
 		hci_dev_hold(hdev);
 		set_bit(HCI_UP, &hdev->flags);
 		hci_notify(hdev, HCI_DEV_UP);
-		if (!test_bit(HCI_SETUP, &hdev->flags)) {
+		if (!test_bit(HCI_SETUP, &hdev->dev_flags)) {
 			hci_dev_lock(hdev);
 			mgmt_powered(hdev, 1);
 			hci_dev_unlock(hdev);
@@ -621,10 +748,10 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 		hdev->discov_timeout = 0;
 	}
 
-	if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->flags))
+	if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags))
 		cancel_delayed_work(&hdev->power_off);
 
-	if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->flags))
+	if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags))
 		cancel_delayed_work(&hdev->service_cache);
 
 	hci_dev_lock(hdev);
@@ -846,11 +973,11 @@ int hci_get_dev_list(void __user *arg)
 
 	read_lock(&hci_dev_list_lock);
 	list_for_each_entry(hdev, &hci_dev_list, list) {
-		if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->flags))
+		if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags))
 			cancel_delayed_work(&hdev->power_off);
 
-		if (!test_bit(HCI_MGMT, &hdev->flags))
-			set_bit(HCI_PAIRABLE, &hdev->flags);
+		if (!test_bit(HCI_MGMT, &hdev->dev_flags))
+			set_bit(HCI_PAIRABLE, &hdev->dev_flags);
 
 		(dr + n)->dev_id  = hdev->id;
 		(dr + n)->dev_opt = hdev->flags;
@@ -882,11 +1009,11 @@ int hci_get_dev_info(void __user *arg)
 	if (!hdev)
 		return -ENODEV;
 
-	if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->flags))
+	if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags))
 		cancel_delayed_work_sync(&hdev->power_off);
 
-	if (!test_bit(HCI_MGMT, &hdev->flags))
-		set_bit(HCI_PAIRABLE, &hdev->flags);
+	if (!test_bit(HCI_MGMT, &hdev->dev_flags))
+		set_bit(HCI_PAIRABLE, &hdev->dev_flags);
 
 	strcpy(di.name, hdev->name);
 	di.bdaddr   = hdev->bdaddr;
@@ -966,11 +1093,11 @@ static void hci_power_on(struct work_struct *work)
 	if (hci_dev_open(hdev->id) < 0)
 		return;
 
-	if (test_bit(HCI_AUTO_OFF, &hdev->flags))
+	if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags))
 		schedule_delayed_work(&hdev->power_off,
 					msecs_to_jiffies(AUTO_OFF_TIMEOUT));
 
-	if (test_and_clear_bit(HCI_SETUP, &hdev->flags))
+	if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags))
 		mgmt_index_added(hdev);
 }
 
@@ -981,7 +1108,7 @@ static void hci_power_off(struct work_struct *work)
 
 	BT_DBG("%s", hdev->name);
 
-	clear_bit(HCI_AUTO_OFF, &hdev->flags);
+	clear_bit(HCI_AUTO_OFF, &hdev->dev_flags);
 
 	hci_dev_close(hdev->id);
 }
@@ -1426,7 +1553,7 @@ int hci_add_adv_entry(struct hci_dev *hdev,
 	if (hci_find_adv_entry(hdev, &ev->bdaddr))
 		return 0;
 
-	entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
+	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
 	if (!entry)
 		return -ENOMEM;
 
@@ -1447,10 +1574,9 @@ int hci_register_dev(struct hci_dev *hdev)
 	struct list_head *head = &hci_dev_list, *p;
 	int i, id, error;
 
-	BT_DBG("%p name %s bus %d owner %p", hdev, hdev->name,
-						hdev->bus, hdev->owner);
+	BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
 
-	if (!hdev->open || !hdev->close || !hdev->destruct)
+	if (!hdev->open || !hdev->close)
 		return -EINVAL;
 
 	/* Do not allow HCI_AMP devices to register at index 0,
@@ -1471,7 +1597,6 @@ int hci_register_dev(struct hci_dev *hdev)
 	hdev->id = id;
 	list_add_tail(&hdev->list, head);
 
-	atomic_set(&hdev->refcnt, 1);
 	mutex_init(&hdev->lock);
 
 	hdev->flags = 0;
@@ -1502,7 +1627,7 @@ int hci_register_dev(struct hci_dev *hdev)
 	init_waitqueue_head(&hdev->req_wait_q);
 	mutex_init(&hdev->req_lock);
 
-	inquiry_cache_init(hdev);
+	discovery_init(hdev);
 
 	hci_conn_hash_init(hdev);
 
@@ -1550,11 +1675,12 @@ int hci_register_dev(struct hci_dev *hdev)
 		}
 	}
 
-	set_bit(HCI_AUTO_OFF, &hdev->flags);
-	set_bit(HCI_SETUP, &hdev->flags);
+	set_bit(HCI_AUTO_OFF, &hdev->dev_flags);
+	set_bit(HCI_SETUP, &hdev->dev_flags);
 	schedule_work(&hdev->power_on);
 
 	hci_notify(hdev, HCI_DEV_REG);
+	hci_dev_hold(hdev);
 
 	return id;
 
@@ -1586,7 +1712,7 @@ void hci_unregister_dev(struct hci_dev *hdev)
 		kfree_skb(hdev->reassembly[i]);
 
 	if (!test_bit(HCI_INIT, &hdev->flags) &&
-					!test_bit(HCI_SETUP, &hdev->flags)) {
+				!test_bit(HCI_SETUP, &hdev->dev_flags)) {
 		hci_dev_lock(hdev);
 		mgmt_index_removed(hdev);
 		hci_dev_unlock(hdev);
@@ -1617,7 +1743,7 @@ void hci_unregister_dev(struct hci_dev *hdev)
 	hci_adv_entries_clear(hdev);
 	hci_dev_unlock(hdev);
 
-	__hci_dev_put(hdev);
+	hci_dev_put(hdev);
 }
 EXPORT_SYMBOL(hci_unregister_dev);
 
@@ -2249,7 +2375,8 @@ static inline void hci_sched_acl(struct hci_dev *hdev)
 	if (!test_bit(HCI_RAW, &hdev->flags)) {
 		/* ACL tx timeout must be longer than maximum
 		 * link supervision timeout (40.9 seconds) */
-		if (!hdev->acl_cnt && time_after(jiffies, hdev->acl_last_tx + HZ * 45))
+		if (!hdev->acl_cnt && time_after(jiffies, hdev->acl_last_tx +
+					msecs_to_jiffies(HCI_ACL_TX_TIMEOUT)))
 			hci_link_tx_to(hdev, ACL_LINK);
 	}
 
@@ -2567,6 +2694,8 @@ int hci_do_inquiry(struct hci_dev *hdev, u8 length)
 	if (test_bit(HCI_INQUIRY, &hdev->flags))
 		return -EINPROGRESS;
 
+	inquiry_cache_flush(hdev);
+
 	memset(&cp, 0, sizeof(cp));
 	memcpy(&cp.lap, lap, sizeof(cp.lap));
 	cp.length  = length;