X-Git-Url: https://git.stricted.de/?a=blobdiff_plain;f=net%2Fbluetooth%2Fhci_core.c;h=29a9b01c3b9ba505f2d38340968275812198a322;hb=4aab14e5504e84c42534378f91e836e6f55d0886;hp=b84458dcc2261259d83e1bad2aecef95ed622113;hpb=3298758385bbffa792f009fd965e02203aaf82a2;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index b84458dcc226..29a9b01c3b9b 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1,6 +1,7 @@
 /*
    BlueZ - Bluetooth protocol stack for Linux
    Copyright (C) 2000-2001 Qualcomm Incorporated
+   Copyright (C) 2011 ProFUSION Embedded Systems
 
    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
 
@@ -54,11 +55,11 @@
 
 #define AUTO_OFF_TIMEOUT 2000
 
-static void hci_cmd_task(unsigned long arg);
-static void hci_rx_task(unsigned long arg);
-static void hci_tx_task(unsigned long arg);
+bool enable_hs;
 
-static DEFINE_RWLOCK(hci_task_lock);
+static void hci_rx_work(struct work_struct *work);
+static void hci_cmd_work(struct work_struct *work);
+static void hci_tx_work(struct work_struct *work);
 
 /* HCI device list */
 LIST_HEAD(hci_dev_list);
@@ -68,10 +69,6 @@ DEFINE_RWLOCK(hci_dev_list_lock);
 LIST_HEAD(hci_cb_list);
 DEFINE_RWLOCK(hci_cb_list_lock);
 
-/* HCI protocols */
-#define HCI_MAX_PROTO	2
-struct hci_proto *hci_proto[HCI_MAX_PROTO];
-
 /* HCI notifiers list */
 static ATOMIC_NOTIFIER_HEAD(hci_notifier);
 
@@ -190,33 +187,20 @@ static void hci_reset_req(struct hci_dev *hdev, unsigned long opt)
 	hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL);
 }
 
-static void hci_init_req(struct hci_dev *hdev, unsigned long opt)
+static void bredr_init(struct hci_dev *hdev)
 {
 	struct hci_cp_delete_stored_link_key cp;
-	struct sk_buff *skb;
 	__le16 param;
 	__u8 flt_type;
 
-	BT_DBG("%s %ld", hdev->name, opt);
-
-	/* Driver initialization */
-
-	/* Special commands */
-	while ((skb = skb_dequeue(&hdev->driver_init))) {
-		bt_cb(skb)->pkt_type = HCI_COMMAND_PKT;
-		skb->dev = (void *) hdev;
-
-		skb_queue_tail(&hdev->cmd_q, skb);
-		tasklet_schedule(&hdev->cmd_task);
-	}
-	skb_queue_purge(&hdev->driver_init);
+	hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED;
 
 	/* Mandatory initialization */
 
 	/* Reset */
 	if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) {
-			set_bit(HCI_RESET, &hdev->flags);
-			hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL);
+		set_bit(HCI_RESET, &hdev->flags);
+		hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL);
 	}
 
 	/* Read Local Supported Features */
@@ -228,18 +212,6 @@ static void hci_init_req(struct hci_dev *hdev, unsigned long opt)
 	/* Read Buffer Size (ACL mtu, max pkt, etc.) */
 	hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL);
 
-#if 0
-	/* Host buffer size */
-	{
-		struct hci_cp_host_buffer_size cp;
-		cp.acl_mtu = cpu_to_le16(HCI_MAX_ACL_SIZE);
-		cp.sco_mtu = HCI_MAX_SCO_SIZE;
-		cp.acl_max_pkt = cpu_to_le16(0xffff);
-		cp.sco_max_pkt = cpu_to_le16(0xffff);
-		hci_send_cmd(hdev, HCI_OP_HOST_BUFFER_SIZE, sizeof(cp), &cp);
-	}
-#endif
-
 	/* Read BD Address */
 	hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL);
 
@@ -267,6 +239,51 @@ static void hci_init_req(struct hci_dev *hdev, unsigned long opt)
 	hci_send_cmd(hdev, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp);
 }
 
+static void amp_init(struct hci_dev *hdev)
+{
+	hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED;
+
+	/* Reset */
+	hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL);
+
+	/* Read Local Version */
+	hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL);
+}
+
+static void hci_init_req(struct hci_dev *hdev, unsigned long opt)
+{
+	struct sk_buff *skb;
+
+	BT_DBG("%s %ld", hdev->name, opt);
+
+	/* Driver initialization */
+
+	/* Special commands */
+	while ((skb = skb_dequeue(&hdev->driver_init))) {
+		bt_cb(skb)->pkt_type = HCI_COMMAND_PKT;
+		skb->dev = (void *) hdev;
+
+		skb_queue_tail(&hdev->cmd_q, skb);
+		queue_work(hdev->workqueue, &hdev->cmd_work);
+	}
+	skb_queue_purge(&hdev->driver_init);
+
+	switch (hdev->dev_type) {
+	case HCI_BREDR:
+		bredr_init(hdev);
+		break;
+
+	case HCI_AMP:
+		amp_init(hdev);
+		break;
+
+	default:
+		BT_ERR("Unknown device type %d", hdev->dev_type);
+		break;
+	}
+
+}
+
 static void hci_le_init_req(struct hci_dev *hdev, unsigned long opt)
 {
 	BT_DBG("%s", hdev->name);
@@ -319,8 +336,7 @@ static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt)
  * Device is held on return. */
 struct hci_dev *hci_dev_get(int index)
 {
-	struct hci_dev *hdev = NULL;
-	struct list_head *p;
+	struct hci_dev *hdev = NULL, *d;
 
 	BT_DBG("%d", index);
 
@@ -328,8 +344,7 @@ struct hci_dev *hci_dev_get(int index)
 		return NULL;
 
 	read_lock(&hci_dev_list_lock);
-	list_for_each(p, &hci_dev_list) {
-		struct hci_dev *d = list_entry(p, struct hci_dev, list);
+	list_for_each_entry(d, &hci_dev_list, list) {
 		if (d->id == index) {
 			hdev = hci_dev_hold(d);
 			break;
@@ -340,72 +355,207 @@ 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;
 
-	BT_DBG("cache %p", cache);
+	switch (discov->state) {
+	case DISCOVERY_INQUIRY:
+	case DISCOVERY_LE_SCAN:
+	case DISCOVERY_RESOLVING:
+		return true;
 
-	cache->list = NULL;
-	while ((e = next)) {
-		next = e->next;
-		kfree(e);
+	default:
+		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:
+		hdev->discovery.type = 0;
+
+		if (hdev->discovery.state != DISCOVERY_STARTING)
+			mgmt_discovering(hdev, 0);
+		break;
+	case DISCOVERY_STARTING:
+		break;
+	case DISCOVERY_INQUIRY:
+	case DISCOVERY_LE_SCAN:
+		mgmt_discovering(hdev, 1);
+		break;
+	case DISCOVERY_RESOLVING:
+		break;
+	case DISCOVERY_STOPPING:
+		break;
+	}
+
+	hdev->discovery.state = state;
+}
+
+static void inquiry_cache_flush(struct hci_dev *hdev)
+{
+	struct discovery_state *cache = &hdev->discovery;
+	struct inquiry_entry *p, *n;
+
+	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);
+		}
+
+		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);
+	}
 
-		ie->next = cache->list;
-		cache->list = ie;
+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);
@@ -445,14 +595,14 @@ int hci_inquiry(void __user *arg)
 	if (!hdev)
 		return -ENODEV;
 
-	hci_dev_lock_bh(hdev);
+	hci_dev_lock(hdev);
 	if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX ||
 				inquiry_cache_empty(hdev) ||
 				ir.flags & IREQ_CACHE_FLUSH) {
 		inquiry_cache_flush(hdev);
 		do_inquiry = 1;
 	}
-	hci_dev_unlock_bh(hdev);
+	hci_dev_unlock(hdev);
 
 	timeo = ir.length * msecs_to_jiffies(2000);
 
@@ -474,9 +624,9 @@ int hci_inquiry(void __user *arg)
 		goto done;
 	}
 
-	hci_dev_lock_bh(hdev);
+	hci_dev_lock(hdev);
 	ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf);
-	hci_dev_unlock_bh(hdev);
+	hci_dev_unlock(hdev);
 
 	BT_DBG("num_rsp %d", ir.num_rsp);
 
@@ -523,8 +673,9 @@ int hci_dev_open(__u16 dev)
 	if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
 		set_bit(HCI_RAW, &hdev->flags);
 
-	/* Treat all non BR/EDR controllers as raw devices for now */
-	if (hdev->dev_type != HCI_BREDR)
+	/* Treat all non BR/EDR controllers as raw devices if
+	   enable_hs is not set */
+	if (hdev->dev_type != HCI_BREDR && !enable_hs)
 		set_bit(HCI_RAW, &hdev->flags);
 
 	if (hdev->open(hdev)) {
@@ -551,13 +702,16 @@ 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))
-			mgmt_powered(hdev->id, 1);
+		if (!test_bit(HCI_SETUP, &hdev->dev_flags)) {
+			hci_dev_lock(hdev);
+			mgmt_powered(hdev, 1);
+			hci_dev_unlock(hdev);
+		}
 	} else {
 		/* Init failed, cleanup */
-		tasklet_kill(&hdev->rx_task);
-		tasklet_kill(&hdev->tx_task);
-		tasklet_kill(&hdev->cmd_task);
+		flush_work(&hdev->tx_work);
+		flush_work(&hdev->cmd_work);
+		flush_work(&hdev->rx_work);
 
 		skb_queue_purge(&hdev->cmd_q);
 		skb_queue_purge(&hdev->rx_q);
@@ -584,6 +738,8 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 {
 	BT_DBG("%s %p", hdev->name, hdev);
 
+	cancel_work_sync(&hdev->le_scan);
+
 	hci_req_cancel(hdev, ENODEV);
 	hci_req_lock(hdev);
 
@@ -593,14 +749,27 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 		return 0;
 	}
 
-	/* Kill RX and TX tasks */
-	tasklet_kill(&hdev->rx_task);
-	tasklet_kill(&hdev->tx_task);
+	/* Flush RX and TX works */
+	flush_work(&hdev->tx_work);
+	flush_work(&hdev->rx_work);
+
+	if (hdev->discov_timeout > 0) {
+		cancel_delayed_work(&hdev->discov_off);
+		hdev->discov_timeout = 0;
+	}
+
+	if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags))
+		cancel_delayed_work(&hdev->power_off);
 
-	hci_dev_lock_bh(hdev);
+	if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags))
+		cancel_delayed_work(&hdev->service_cache);
+
+	cancel_delayed_work_sync(&hdev->le_scan_disable);
+
+	hci_dev_lock(hdev);
 	inquiry_cache_flush(hdev);
 	hci_conn_hash_flush(hdev);
-	hci_dev_unlock_bh(hdev);
+	hci_dev_unlock(hdev);
 
 	hci_notify(hdev, HCI_DEV_DOWN);
 
@@ -610,15 +779,16 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 	/* Reset device */
 	skb_queue_purge(&hdev->cmd_q);
 	atomic_set(&hdev->cmd_cnt, 1);
-	if (!test_bit(HCI_RAW, &hdev->flags)) {
+	if (!test_bit(HCI_RAW, &hdev->flags) &&
+				test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) {
 		set_bit(HCI_INIT, &hdev->flags);
 		__hci_request(hdev, hci_reset_req, 0,
 					msecs_to_jiffies(250));
 		clear_bit(HCI_INIT, &hdev->flags);
 	}
 
-	/* Kill cmd task */
-	tasklet_kill(&hdev->cmd_task);
+	/* flush cmd  work */
+	flush_work(&hdev->cmd_work);
 
 	/* Drop queues */
 	skb_queue_purge(&hdev->rx_q);
@@ -636,7 +806,9 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 	 * and no tasks are scheduled. */
 	hdev->close(hdev);
 
-	mgmt_powered(hdev->id, 0);
+	hci_dev_lock(hdev);
+	mgmt_powered(hdev, 0);
+	hci_dev_unlock(hdev);
 
 	/* Clear flags */
 	hdev->flags = 0;
@@ -670,7 +842,6 @@ int hci_dev_reset(__u16 dev)
 		return -ENODEV;
 
 	hci_req_lock(hdev);
-	tasklet_disable(&hdev->tx_task);
 
 	if (!test_bit(HCI_UP, &hdev->flags))
 		goto done;
@@ -679,10 +850,10 @@ int hci_dev_reset(__u16 dev)
 	skb_queue_purge(&hdev->rx_q);
 	skb_queue_purge(&hdev->cmd_q);
 
-	hci_dev_lock_bh(hdev);
+	hci_dev_lock(hdev);
 	inquiry_cache_flush(hdev);
 	hci_conn_hash_flush(hdev);
-	hci_dev_unlock_bh(hdev);
+	hci_dev_unlock(hdev);
 
 	if (hdev->flush)
 		hdev->flush(hdev);
@@ -695,7 +866,6 @@ int hci_dev_reset(__u16 dev)
 					msecs_to_jiffies(HCI_INIT_TIMEOUT));
 
 done:
-	tasklet_enable(&hdev->tx_task);
 	hci_req_unlock(hdev);
 	hci_dev_put(hdev);
 	return ret;
@@ -794,9 +964,9 @@ int hci_dev_cmd(unsigned int cmd, void __user *arg)
 
 int hci_get_dev_list(void __user *arg)
 {
+	struct hci_dev *hdev;
 	struct hci_dev_list_req *dl;
 	struct hci_dev_req *dr;
-	struct list_head *p;
 	int n = 0, size, err;
 	__u16 dev_num;
 
@@ -814,16 +984,13 @@ int hci_get_dev_list(void __user *arg)
 
 	dr = dl->dev_req;
 
-	read_lock_bh(&hci_dev_list_lock);
-	list_for_each(p, &hci_dev_list) {
-		struct hci_dev *hdev;
-
-		hdev = list_entry(p, struct hci_dev, list);
-
-		hci_del_off_timer(hdev);
+	read_lock(&hci_dev_list_lock);
+	list_for_each_entry(hdev, &hci_dev_list, list) {
+		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;
@@ -831,7 +998,7 @@ int hci_get_dev_list(void __user *arg)
 		if (++n >= dev_num)
 			break;
 	}
-	read_unlock_bh(&hci_dev_list_lock);
+	read_unlock(&hci_dev_list_lock);
 
 	dl->dev_num = n;
 	size = sizeof(*dl) + n * sizeof(*dr);
@@ -855,10 +1022,11 @@ int hci_get_dev_info(void __user *arg)
 	if (!hdev)
 		return -ENODEV;
 
-	hci_del_off_timer(hdev);
+	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;
@@ -912,6 +1080,7 @@ struct hci_dev *hci_alloc_dev(void)
 	if (!hdev)
 		return NULL;
 
+	hci_init_sysfs(hdev);
 	skb_queue_head_init(&hdev->driver_init);
 
 	return hdev;
@@ -937,40 +1106,42 @@ 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))
-		mod_timer(&hdev->off_timer,
-				jiffies + msecs_to_jiffies(AUTO_OFF_TIMEOUT));
+	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))
-		mgmt_index_added(hdev->id);
+	if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags))
+		mgmt_index_added(hdev);
 }
 
 static void hci_power_off(struct work_struct *work)
 {
-	struct hci_dev *hdev = container_of(work, struct hci_dev, power_off);
+	struct hci_dev *hdev = container_of(work, struct hci_dev,
+							power_off.work);
 
 	BT_DBG("%s", hdev->name);
 
+	clear_bit(HCI_AUTO_OFF, &hdev->dev_flags);
+
 	hci_dev_close(hdev->id);
 }
 
-static void hci_auto_off(unsigned long data)
+static void hci_discov_off(struct work_struct *work)
 {
-	struct hci_dev *hdev = (struct hci_dev *) data;
+	struct hci_dev *hdev;
+	u8 scan = SCAN_PAGE;
+
+	hdev = container_of(work, struct hci_dev, discov_off.work);
 
 	BT_DBG("%s", hdev->name);
 
-	clear_bit(HCI_AUTO_OFF, &hdev->flags);
+	hci_dev_lock(hdev);
 
-	queue_work(hdev->workqueue, &hdev->power_off);
-}
+	hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan);
 
-void hci_del_off_timer(struct hci_dev *hdev)
-{
-	BT_DBG("%s", hdev->name);
+	hdev->discov_timeout = 0;
 
-	clear_bit(HCI_AUTO_OFF, &hdev->flags);
-	del_timer(&hdev->off_timer);
+	hci_dev_unlock(hdev);
 }
 
 int hci_uuids_clear(struct hci_dev *hdev)
@@ -1005,18 +1176,25 @@ int hci_link_keys_clear(struct hci_dev *hdev)
 	return 0;
 }
 
-struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr)
+int hci_smp_ltks_clear(struct hci_dev *hdev)
 {
-	struct list_head *p;
+	struct smp_ltk *k, *tmp;
 
-	list_for_each(p, &hdev->link_keys) {
-		struct link_key *k;
+	list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) {
+		list_del(&k->list);
+		kfree(k);
+	}
 
-		k = list_entry(p, struct link_key, list);
+	return 0;
+}
+
+struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr)
+{
+	struct link_key *k;
 
+	list_for_each_entry(k, &hdev->link_keys, list)
 		if (bacmp(bdaddr, &k->bdaddr) == 0)
 			return k;
-	}
 
 	return NULL;
 }
@@ -1057,41 +1235,35 @@ static int hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn,
 	return 0;
 }
 
-struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8])
+struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8])
 {
-	struct link_key *k;
+	struct smp_ltk *k;
 
-	list_for_each_entry(k, &hdev->link_keys, list) {
-		struct key_master_id *id;
-
-		if (k->type != HCI_LK_SMP_LTK)
-			continue;
-
-		if (k->dlen != sizeof(*id))
+	list_for_each_entry(k, &hdev->long_term_keys, list) {
+		if (k->ediv != ediv ||
+				memcmp(rand, k->rand, sizeof(k->rand)))
 			continue;
 
-		id = (void *) &k->data;
-		if (id->ediv == ediv &&
-				(memcmp(rand, id->rand, sizeof(id->rand)) == 0))
-			return k;
+		return k;
 	}
 
 	return NULL;
 }
 EXPORT_SYMBOL(hci_find_ltk);
 
-struct link_key *hci_find_link_key_type(struct hci_dev *hdev,
-					bdaddr_t *bdaddr, u8 type)
+struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
+								u8 addr_type)
 {
-	struct link_key *k;
+	struct smp_ltk *k;
 
-	list_for_each_entry(k, &hdev->link_keys, list)
-		if (k->type == type && bacmp(bdaddr, &k->bdaddr) == 0)
+	list_for_each_entry(k, &hdev->long_term_keys, list)
+		if (addr_type == k->bdaddr_type &&
+					bacmp(bdaddr, &k->bdaddr) == 0)
 			return k;
 
 	return NULL;
 }
-EXPORT_SYMBOL(hci_find_link_key_type);
+EXPORT_SYMBOL(hci_find_ltk_by_addr);
 
 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 				bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len)
@@ -1138,7 +1310,7 @@ int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 
 	persistent = hci_persistent_key(hdev, conn, type, old_key_type);
 
-	mgmt_new_key(hdev->id, key, persistent);
+	mgmt_new_link_key(hdev, key, persistent);
 
 	if (!persistent) {
 		list_del(&key->list);
@@ -1148,40 +1320,39 @@ int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 	return 0;
 }
 
-int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr,
-			u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16])
+int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
+				int new_key, u8 authenticated, u8 tk[16],
+				u8 enc_size, u16 ediv, u8 rand[8])
 {
-	struct link_key *key, *old_key;
-	struct key_master_id *id;
-	u8 old_key_type;
+	struct smp_ltk *key, *old_key;
 
-	BT_DBG("%s addr %s", hdev->name, batostr(bdaddr));
+	if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK))
+		return 0;
 
-	old_key = hci_find_link_key_type(hdev, bdaddr, HCI_LK_SMP_LTK);
-	if (old_key) {
+	old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type);
+	if (old_key)
 		key = old_key;
-		old_key_type = old_key->type;
-	} else {
-		key = kzalloc(sizeof(*key) + sizeof(*id), GFP_ATOMIC);
+	else {
+		key = kzalloc(sizeof(*key), GFP_ATOMIC);
 		if (!key)
 			return -ENOMEM;
-		list_add(&key->list, &hdev->link_keys);
-		old_key_type = 0xff;
+		list_add(&key->list, &hdev->long_term_keys);
 	}
 
-	key->dlen = sizeof(*id);
-
 	bacpy(&key->bdaddr, bdaddr);
-	memcpy(key->val, ltk, sizeof(key->val));
-	key->type = HCI_LK_SMP_LTK;
-	key->pin_len = key_size;
+	key->bdaddr_type = addr_type;
+	memcpy(key->val, tk, sizeof(key->val));
+	key->authenticated = authenticated;
+	key->ediv = ediv;
+	key->enc_size = enc_size;
+	key->type = type;
+	memcpy(key->rand, rand, sizeof(key->rand));
 
-	id = (void *) &key->data;
-	id->ediv = ediv;
-	memcpy(id->rand, rand, sizeof(id->rand));
+	if (!new_key)
+		return 0;
 
-	if (new_key)
-		mgmt_new_key(hdev->id, key, old_key_type);
+	if (type & HCI_SMP_LTK)
+		mgmt_new_ltk(hdev, key, 1);
 
 	return 0;
 }
@@ -1202,6 +1373,23 @@ int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr)
 	return 0;
 }
 
+int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr)
+{
+	struct smp_ltk *k, *tmp;
+
+	list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) {
+		if (bacmp(bdaddr, &k->bdaddr))
+			continue;
+
+		BT_DBG("%s removing %s", hdev->name, batostr(bdaddr));
+
+		list_del(&k->list);
+		kfree(k);
+	}
+
+	return 0;
+}
+
 /* HCI command timer function */
 static void hci_cmd_timer(unsigned long arg)
 {
@@ -1209,7 +1397,7 @@ static void hci_cmd_timer(unsigned long arg)
 
 	BT_ERR("%s command tx timeout", hdev->name);
 	atomic_set(&hdev->cmd_cnt, 1);
-	tasklet_schedule(&hdev->cmd_task);
+	queue_work(hdev->workqueue, &hdev->cmd_work);
 }
 
 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
@@ -1279,16 +1467,11 @@ int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
 						bdaddr_t *bdaddr)
 {
-	struct list_head *p;
-
-	list_for_each(p, &hdev->blacklist) {
-		struct bdaddr_list *b;
-
-		b = list_entry(p, struct bdaddr_list, list);
+	struct bdaddr_list *b;
 
+	list_for_each_entry(b, &hdev->blacklist, list)
 		if (bacmp(bdaddr, &b->bdaddr) == 0)
 			return b;
-	}
 
 	return NULL;
 }
@@ -1309,7 +1492,7 @@ int hci_blacklist_clear(struct hci_dev *hdev)
 	return 0;
 }
 
-int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr)
+int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
 {
 	struct bdaddr_list *entry;
 
@@ -1327,31 +1510,30 @@ int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr)
 
 	list_add(&entry->list, &hdev->blacklist);
 
-	return mgmt_device_blocked(hdev->id, bdaddr);
+	return mgmt_device_blocked(hdev, bdaddr, type);
 }
 
-int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr)
+int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
 {
 	struct bdaddr_list *entry;
 
-	if (bacmp(bdaddr, BDADDR_ANY) == 0) {
+	if (bacmp(bdaddr, BDADDR_ANY) == 0)
 		return hci_blacklist_clear(hdev);
-	}
 
 	entry = hci_blacklist_lookup(hdev, bdaddr);
-	if (!entry) {
+	if (!entry)
 		return -ENOENT;
-	}
 
 	list_del(&entry->list);
 	kfree(entry);
 
-	return mgmt_device_unblocked(hdev->id, bdaddr);
+	return mgmt_device_unblocked(hdev, bdaddr, type);
 }
 
-static void hci_clear_adv_cache(unsigned long arg)
+static void hci_clear_adv_cache(struct work_struct *work)
 {
-	struct hci_dev *hdev = (void *) arg;
+	struct hci_dev *hdev = container_of(work, struct hci_dev,
+							adv_work.work);
 
 	hci_dev_lock(hdev);
 
@@ -1406,7 +1588,7 @@ 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;
 
@@ -1421,19 +1603,124 @@ int hci_add_adv_entry(struct hci_dev *hdev,
 	return 0;
 }
 
+static void le_scan_param_req(struct hci_dev *hdev, unsigned long opt)
+{
+	struct le_scan_params *param =  (struct le_scan_params *) opt;
+	struct hci_cp_le_set_scan_param cp;
+
+	memset(&cp, 0, sizeof(cp));
+	cp.type = param->type;
+	cp.interval = cpu_to_le16(param->interval);
+	cp.window = cpu_to_le16(param->window);
+
+	hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp);
+}
+
+static void le_scan_enable_req(struct hci_dev *hdev, unsigned long opt)
+{
+	struct hci_cp_le_set_scan_enable cp;
+
+	memset(&cp, 0, sizeof(cp));
+	cp.enable = 1;
+
+	hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+}
+
+static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval,
+						u16 window, int timeout)
+{
+	long timeo = msecs_to_jiffies(3000);
+	struct le_scan_params param;
+	int err;
+
+	BT_DBG("%s", hdev->name);
+
+	if (test_bit(HCI_LE_SCAN, &hdev->dev_flags))
+		return -EINPROGRESS;
+
+	param.type = type;
+	param.interval = interval;
+	param.window = window;
+
+	hci_req_lock(hdev);
+
+	err = __hci_request(hdev, le_scan_param_req, (unsigned long) &param,
+									timeo);
+	if (!err)
+		err = __hci_request(hdev, le_scan_enable_req, 0, timeo);
+
+	hci_req_unlock(hdev);
+
+	if (err < 0)
+		return err;
+
+	schedule_delayed_work(&hdev->le_scan_disable,
+						msecs_to_jiffies(timeout));
+
+	return 0;
+}
+
+static void le_scan_disable_work(struct work_struct *work)
+{
+	struct hci_dev *hdev = container_of(work, struct hci_dev,
+						le_scan_disable.work);
+	struct hci_cp_le_set_scan_enable cp;
+
+	BT_DBG("%s", hdev->name);
+
+	memset(&cp, 0, sizeof(cp));
+
+	hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+}
+
+static void le_scan_work(struct work_struct *work)
+{
+	struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan);
+	struct le_scan_params *param = &hdev->le_scan_params;
+
+	BT_DBG("%s", hdev->name);
+
+	hci_do_le_scan(hdev, param->type, param->interval,
+					param->window, param->timeout);
+}
+
+int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
+								int timeout)
+{
+	struct le_scan_params *param = &hdev->le_scan_params;
+
+	BT_DBG("%s", hdev->name);
+
+	if (work_busy(&hdev->le_scan))
+		return -EINPROGRESS;
+
+	param->type = type;
+	param->interval = interval;
+	param->window = window;
+	param->timeout = timeout;
+
+	queue_work(system_long_wq, &hdev->le_scan);
+
+	return 0;
+}
+
 /* Register HCI device */
 int hci_register_dev(struct hci_dev *hdev)
 {
 	struct list_head *head = &hci_dev_list, *p;
-	int i, id = 0;
+	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;
 
-	write_lock_bh(&hci_dev_list_lock);
+	/* Do not allow HCI_AMP devices to register at index 0,
+	 * so the index can be used as the AMP controller ID.
+	 */
+	id = (hdev->dev_type == HCI_BREDR) ? 0 : 1;
+
+	write_lock(&hci_dev_list_lock);
 
 	/* Find first available device id */
 	list_for_each(p, &hci_dev_list) {
@@ -1444,12 +1731,12 @@ int hci_register_dev(struct hci_dev *hdev)
 
 	sprintf(hdev->name, "hci%d", id);
 	hdev->id = id;
-	list_add(&hdev->list, head);
+	list_add_tail(&hdev->list, head);
 
-	atomic_set(&hdev->refcnt, 1);
-	spin_lock_init(&hdev->lock);
+	mutex_init(&hdev->lock);
 
 	hdev->flags = 0;
+	hdev->dev_flags = 0;
 	hdev->pkt_type  = (HCI_DM1 | HCI_DH1 | HCI_HV1);
 	hdev->esco_type = (ESCO_HV1);
 	hdev->link_mode = (HCI_LM_ACCEPT);
@@ -1459,9 +1746,10 @@ int hci_register_dev(struct hci_dev *hdev)
 	hdev->sniff_max_interval = 800;
 	hdev->sniff_min_interval = 80;
 
-	tasklet_init(&hdev->cmd_task, hci_cmd_task, (unsigned long) hdev);
-	tasklet_init(&hdev->rx_task, hci_rx_task, (unsigned long) hdev);
-	tasklet_init(&hdev->tx_task, hci_tx_task, (unsigned long) hdev);
+	INIT_WORK(&hdev->rx_work, hci_rx_work);
+	INIT_WORK(&hdev->cmd_work, hci_cmd_work);
+	INIT_WORK(&hdev->tx_work, hci_tx_work);
+
 
 	skb_queue_head_init(&hdev->rx_q);
 	skb_queue_head_init(&hdev->cmd_q);
@@ -1475,37 +1763,49 @@ 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);
 
+	INIT_LIST_HEAD(&hdev->mgmt_pending);
+
 	INIT_LIST_HEAD(&hdev->blacklist);
 
 	INIT_LIST_HEAD(&hdev->uuids);
 
 	INIT_LIST_HEAD(&hdev->link_keys);
+	INIT_LIST_HEAD(&hdev->long_term_keys);
 
 	INIT_LIST_HEAD(&hdev->remote_oob_data);
 
 	INIT_LIST_HEAD(&hdev->adv_entries);
-	setup_timer(&hdev->adv_timer, hci_clear_adv_cache,
-						(unsigned long) hdev);
 
+	INIT_DELAYED_WORK(&hdev->adv_work, hci_clear_adv_cache);
 	INIT_WORK(&hdev->power_on, hci_power_on);
-	INIT_WORK(&hdev->power_off, hci_power_off);
-	setup_timer(&hdev->off_timer, hci_auto_off, (unsigned long) hdev);
+	INIT_DELAYED_WORK(&hdev->power_off, hci_power_off);
+
+	INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off);
 
 	memset(&hdev->stat, 0, sizeof(struct hci_dev_stats));
 
 	atomic_set(&hdev->promisc, 0);
 
-	write_unlock_bh(&hci_dev_list_lock);
+	INIT_WORK(&hdev->le_scan, le_scan_work);
 
-	hdev->workqueue = create_singlethread_workqueue(hdev->name);
-	if (!hdev->workqueue)
-		goto nomem;
+	INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work);
 
-	hci_register_sysfs(hdev);
+	write_unlock(&hci_dev_list_lock);
+
+	hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND |
+							WQ_MEM_RECLAIM, 1);
+	if (!hdev->workqueue) {
+		error = -ENOMEM;
+		goto err;
+	}
+
+	error = hci_add_sysfs(hdev);
+	if (error < 0)
+		goto err_wqueue;
 
 	hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev,
 				RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, hdev);
@@ -1516,33 +1816,36 @@ int hci_register_dev(struct hci_dev *hdev)
 		}
 	}
 
-	set_bit(HCI_AUTO_OFF, &hdev->flags);
-	set_bit(HCI_SETUP, &hdev->flags);
-	queue_work(hdev->workqueue, &hdev->power_on);
+	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;
 
-nomem:
-	write_lock_bh(&hci_dev_list_lock);
+err_wqueue:
+	destroy_workqueue(hdev->workqueue);
+err:
+	write_lock(&hci_dev_list_lock);
 	list_del(&hdev->list);
-	write_unlock_bh(&hci_dev_list_lock);
+	write_unlock(&hci_dev_list_lock);
 
-	return -ENOMEM;
+	return error;
 }
 EXPORT_SYMBOL(hci_register_dev);
 
 /* Unregister HCI device */
-int hci_unregister_dev(struct hci_dev *hdev)
+void hci_unregister_dev(struct hci_dev *hdev)
 {
 	int i;
 
 	BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
 
-	write_lock_bh(&hci_dev_list_lock);
+	write_lock(&hci_dev_list_lock);
 	list_del(&hdev->list);
-	write_unlock_bh(&hci_dev_list_lock);
+	write_unlock(&hci_dev_list_lock);
 
 	hci_dev_do_close(hdev);
 
@@ -1550,8 +1853,15 @@ int 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))
-		mgmt_index_removed(hdev->id);
+				!test_bit(HCI_SETUP, &hdev->dev_flags)) {
+		hci_dev_lock(hdev);
+		mgmt_index_removed(hdev);
+		hci_dev_unlock(hdev);
+	}
+
+	/* mgmt_index_removed should take care of emptying the
+	 * pending list */
+	BUG_ON(!list_empty(&hdev->mgmt_pending));
 
 	hci_notify(hdev, HCI_DEV_UNREG);
 
@@ -1560,24 +1870,22 @@ int hci_unregister_dev(struct hci_dev *hdev)
 		rfkill_destroy(hdev->rfkill);
 	}
 
-	hci_unregister_sysfs(hdev);
+	hci_del_sysfs(hdev);
 
-	hci_del_off_timer(hdev);
-	del_timer(&hdev->adv_timer);
+	cancel_delayed_work_sync(&hdev->adv_work);
 
 	destroy_workqueue(hdev->workqueue);
 
-	hci_dev_lock_bh(hdev);
+	hci_dev_lock(hdev);
 	hci_blacklist_clear(hdev);
 	hci_uuids_clear(hdev);
 	hci_link_keys_clear(hdev);
+	hci_smp_ltks_clear(hdev);
 	hci_remote_oob_data_clear(hdev);
 	hci_adv_entries_clear(hdev);
-	hci_dev_unlock_bh(hdev);
-
-	__hci_dev_put(hdev);
+	hci_dev_unlock(hdev);
 
-	return 0;
+	hci_dev_put(hdev);
 }
 EXPORT_SYMBOL(hci_unregister_dev);
 
@@ -1613,9 +1921,8 @@ int hci_recv_frame(struct sk_buff *skb)
 	/* Time stamp */
 	__net_timestamp(skb);
 
-	/* Queue frame for rx task */
 	skb_queue_tail(&hdev->rx_q, skb);
-	tasklet_schedule(&hdev->rx_task);
+	queue_work(hdev->workqueue, &hdev->rx_work);
 
 	return 0;
 }
@@ -1787,59 +2094,13 @@ EXPORT_SYMBOL(hci_recv_stream_fragment);
 
 /* ---- Interface to upper protocols ---- */
 
-/* Register/Unregister protocols.
- * hci_task_lock is used to ensure that no tasks are running. */
-int hci_register_proto(struct hci_proto *hp)
-{
-	int err = 0;
-
-	BT_DBG("%p name %s id %d", hp, hp->name, hp->id);
-
-	if (hp->id >= HCI_MAX_PROTO)
-		return -EINVAL;
-
-	write_lock_bh(&hci_task_lock);
-
-	if (!hci_proto[hp->id])
-		hci_proto[hp->id] = hp;
-	else
-		err = -EEXIST;
-
-	write_unlock_bh(&hci_task_lock);
-
-	return err;
-}
-EXPORT_SYMBOL(hci_register_proto);
-
-int hci_unregister_proto(struct hci_proto *hp)
-{
-	int err = 0;
-
-	BT_DBG("%p name %s id %d", hp, hp->name, hp->id);
-
-	if (hp->id >= HCI_MAX_PROTO)
-		return -EINVAL;
-
-	write_lock_bh(&hci_task_lock);
-
-	if (hci_proto[hp->id])
-		hci_proto[hp->id] = NULL;
-	else
-		err = -ENOENT;
-
-	write_unlock_bh(&hci_task_lock);
-
-	return err;
-}
-EXPORT_SYMBOL(hci_unregister_proto);
-
 int hci_register_cb(struct hci_cb *cb)
 {
 	BT_DBG("%p name %s", cb, cb->name);
 
-	write_lock_bh(&hci_cb_list_lock);
+	write_lock(&hci_cb_list_lock);
 	list_add(&cb->list, &hci_cb_list);
-	write_unlock_bh(&hci_cb_list_lock);
+	write_unlock(&hci_cb_list_lock);
 
 	return 0;
 }
@@ -1849,9 +2110,9 @@ int hci_unregister_cb(struct hci_cb *cb)
 {
 	BT_DBG("%p name %s", cb, cb->name);
 
-	write_lock_bh(&hci_cb_list_lock);
+	write_lock(&hci_cb_list_lock);
 	list_del(&cb->list);
-	write_unlock_bh(&hci_cb_list_lock);
+	write_unlock(&hci_cb_list_lock);
 
 	return 0;
 }
@@ -1912,7 +2173,7 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param)
 		hdev->init_last_cmd = opcode;
 
 	skb_queue_tail(&hdev->cmd_q, skb);
-	tasklet_schedule(&hdev->cmd_task);
+	queue_work(hdev->workqueue, &hdev->cmd_work);
 
 	return 0;
 }
@@ -1948,23 +2209,18 @@ static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags)
 	hdr->dlen   = cpu_to_le16(len);
 }
 
-void hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags)
+static void hci_queue_acl(struct hci_conn *conn, struct sk_buff_head *queue,
+				struct sk_buff *skb, __u16 flags)
 {
 	struct hci_dev *hdev = conn->hdev;
 	struct sk_buff *list;
 
-	BT_DBG("%s conn %p flags 0x%x", hdev->name, conn, flags);
-
-	skb->dev = (void *) hdev;
-	bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
-	hci_add_acl_hdr(skb, conn->handle, flags);
-
 	list = skb_shinfo(skb)->frag_list;
 	if (!list) {
 		/* Non fragmented */
 		BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len);
 
-		skb_queue_tail(&conn->data_q, skb);
+		skb_queue_tail(queue, skb);
 	} else {
 		/* Fragmented */
 		BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len);
@@ -1972,9 +2228,9 @@ void hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags)
 		skb_shinfo(skb)->frag_list = NULL;
 
 		/* Queue all fragments atomically */
-		spin_lock_bh(&conn->data_q.lock);
+		spin_lock(&queue->lock);
 
-		__skb_queue_tail(&conn->data_q, skb);
+		__skb_queue_tail(queue, skb);
 
 		flags &= ~ACL_START;
 		flags |= ACL_CONT;
@@ -1987,13 +2243,27 @@ void hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags)
 
 			BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len);
 
-			__skb_queue_tail(&conn->data_q, skb);
+			__skb_queue_tail(queue, skb);
 		} while (list);
 
-		spin_unlock_bh(&conn->data_q.lock);
+		spin_unlock(&queue->lock);
 	}
+}
+
+void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags)
+{
+	struct hci_conn *conn = chan->conn;
+	struct hci_dev *hdev = conn->hdev;
 
-	tasklet_schedule(&hdev->tx_task);
+	BT_DBG("%s chan %p flags 0x%x", hdev->name, chan, flags);
+
+	skb->dev = (void *) hdev;
+	bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
+	hci_add_acl_hdr(skb, conn->handle, flags);
+
+	hci_queue_acl(conn, &chan->data_q, skb, flags);
+
+	queue_work(hdev->workqueue, &hdev->tx_work);
 }
 EXPORT_SYMBOL(hci_send_acl);
 
@@ -2016,7 +2286,7 @@ void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb)
 	bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 
 	skb_queue_tail(&conn->data_q, skb);
-	tasklet_schedule(&hdev->tx_task);
+	queue_work(hdev->workqueue, &hdev->tx_work);
 }
 EXPORT_SYMBOL(hci_send_sco);
 
@@ -2026,16 +2296,15 @@ EXPORT_SYMBOL(hci_send_sco);
 static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int *quote)
 {
 	struct hci_conn_hash *h = &hdev->conn_hash;
-	struct hci_conn *conn = NULL;
+	struct hci_conn *conn = NULL, *c;
 	int num = 0, min = ~0;
-	struct list_head *p;
 
 	/* We don't have to lock device here. Connections are always
 	 * added and removed with TX task disabled. */
-	list_for_each(p, &h->list) {
-		struct hci_conn *c;
-		c = list_entry(p, struct hci_conn, list);
 
+	rcu_read_lock();
+
+	list_for_each_entry_rcu(c, &h->list, list) {
 		if (c->type != type || skb_queue_empty(&c->data_q))
 			continue;
 
@@ -2053,6 +2322,8 @@ static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int
 			break;
 	}
 
+	rcu_read_unlock();
+
 	if (conn) {
 		int cnt, q;
 
@@ -2084,53 +2355,270 @@ static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int
 static inline void hci_link_tx_to(struct hci_dev *hdev, __u8 type)
 {
 	struct hci_conn_hash *h = &hdev->conn_hash;
-	struct list_head *p;
-	struct hci_conn  *c;
+	struct hci_conn *c;
 
 	BT_ERR("%s link tx timeout", hdev->name);
 
+	rcu_read_lock();
+
 	/* Kill stalled connections */
-	list_for_each(p, &h->list) {
-		c = list_entry(p, struct hci_conn, list);
+	list_for_each_entry_rcu(c, &h->list, list) {
 		if (c->type == type && c->sent) {
 			BT_ERR("%s killing stalled connection %s",
 				hdev->name, batostr(&c->dst));
 			hci_acl_disconn(c, 0x13);
 		}
 	}
+
+	rcu_read_unlock();
 }
 
-static inline void hci_sched_acl(struct hci_dev *hdev)
+static inline struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type,
+						int *quote)
 {
+	struct hci_conn_hash *h = &hdev->conn_hash;
+	struct hci_chan *chan = NULL;
+	int num = 0, min = ~0, cur_prio = 0;
 	struct hci_conn *conn;
-	struct sk_buff *skb;
-	int quote;
+	int cnt, q, conn_num = 0;
 
 	BT_DBG("%s", hdev->name);
 
-	if (!hci_conn_num(hdev, ACL_LINK))
-		return;
+	rcu_read_lock();
+
+	list_for_each_entry_rcu(conn, &h->list, list) {
+		struct hci_chan *tmp;
+
+		if (conn->type != type)
+			continue;
+
+		if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG)
+			continue;
+
+		conn_num++;
+
+		list_for_each_entry_rcu(tmp, &conn->chan_list, list) {
+			struct sk_buff *skb;
+
+			if (skb_queue_empty(&tmp->data_q))
+				continue;
+
+			skb = skb_peek(&tmp->data_q);
+			if (skb->priority < cur_prio)
+				continue;
+
+			if (skb->priority > cur_prio) {
+				num = 0;
+				min = ~0;
+				cur_prio = skb->priority;
+			}
+
+			num++;
+
+			if (conn->sent < min) {
+				min  = conn->sent;
+				chan = tmp;
+			}
+		}
+
+		if (hci_conn_num(hdev, type) == conn_num)
+			break;
+	}
+
+	rcu_read_unlock();
+
+	if (!chan)
+		return NULL;
+
+	switch (chan->conn->type) {
+	case ACL_LINK:
+		cnt = hdev->acl_cnt;
+		break;
+	case SCO_LINK:
+	case ESCO_LINK:
+		cnt = hdev->sco_cnt;
+		break;
+	case LE_LINK:
+		cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt;
+		break;
+	default:
+		cnt = 0;
+		BT_ERR("Unknown link type");
+	}
+
+	q = cnt / num;
+	*quote = q ? q : 1;
+	BT_DBG("chan %p quote %d", chan, *quote);
+	return chan;
+}
+
+static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type)
+{
+	struct hci_conn_hash *h = &hdev->conn_hash;
+	struct hci_conn *conn;
+	int num = 0;
 
+	BT_DBG("%s", hdev->name);
+
+	rcu_read_lock();
+
+	list_for_each_entry_rcu(conn, &h->list, list) {
+		struct hci_chan *chan;
+
+		if (conn->type != type)
+			continue;
+
+		if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG)
+			continue;
+
+		num++;
+
+		list_for_each_entry_rcu(chan, &conn->chan_list, list) {
+			struct sk_buff *skb;
+
+			if (chan->sent) {
+				chan->sent = 0;
+				continue;
+			}
+
+			if (skb_queue_empty(&chan->data_q))
+				continue;
+
+			skb = skb_peek(&chan->data_q);
+			if (skb->priority >= HCI_PRIO_MAX - 1)
+				continue;
+
+			skb->priority = HCI_PRIO_MAX - 1;
+
+			BT_DBG("chan %p skb %p promoted to %d", chan, skb,
+								skb->priority);
+		}
+
+		if (hci_conn_num(hdev, type) == num)
+			break;
+	}
+
+	rcu_read_unlock();
+
+}
+
+static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb)
+{
+	/* Calculate count of blocks used by this packet */
+	return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len);
+}
+
+static inline void __check_timeout(struct hci_dev *hdev, unsigned int cnt)
+{
 	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 (!cnt && time_after(jiffies, hdev->acl_last_tx +
+					msecs_to_jiffies(HCI_ACL_TX_TIMEOUT)))
 			hci_link_tx_to(hdev, ACL_LINK);
 	}
+}
 
-	while (hdev->acl_cnt && (conn = hci_low_sent(hdev, ACL_LINK, &quote))) {
-		while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
-			BT_DBG("skb %p len %d", skb, skb->len);
+static inline void hci_sched_acl_pkt(struct hci_dev *hdev)
+{
+	unsigned int cnt = hdev->acl_cnt;
+	struct hci_chan *chan;
+	struct sk_buff *skb;
+	int quote;
 
-			hci_conn_enter_active_mode(conn, bt_cb(skb)->force_active);
+	__check_timeout(hdev, cnt);
+
+	while (hdev->acl_cnt &&
+			(chan = hci_chan_sent(hdev, ACL_LINK, &quote))) {
+		u32 priority = (skb_peek(&chan->data_q))->priority;
+		while (quote-- && (skb = skb_peek(&chan->data_q))) {
+			BT_DBG("chan %p skb %p len %d priority %u", chan, skb,
+					skb->len, skb->priority);
+
+			/* Stop if priority has changed */
+			if (skb->priority < priority)
+				break;
+
+			skb = skb_dequeue(&chan->data_q);
+
+			hci_conn_enter_active_mode(chan->conn,
+						bt_cb(skb)->force_active);
 
 			hci_send_frame(skb);
 			hdev->acl_last_tx = jiffies;
 
 			hdev->acl_cnt--;
-			conn->sent++;
+			chan->sent++;
+			chan->conn->sent++;
+		}
+	}
+
+	if (cnt != hdev->acl_cnt)
+		hci_prio_recalculate(hdev, ACL_LINK);
+}
+
+static inline void hci_sched_acl_blk(struct hci_dev *hdev)
+{
+	unsigned int cnt = hdev->block_cnt;
+	struct hci_chan *chan;
+	struct sk_buff *skb;
+	int quote;
+
+	__check_timeout(hdev, cnt);
+
+	while (hdev->block_cnt > 0 &&
+			(chan = hci_chan_sent(hdev, ACL_LINK, &quote))) {
+		u32 priority = (skb_peek(&chan->data_q))->priority;
+		while (quote > 0 && (skb = skb_peek(&chan->data_q))) {
+			int blocks;
+
+			BT_DBG("chan %p skb %p len %d priority %u", chan, skb,
+						skb->len, skb->priority);
+
+			/* Stop if priority has changed */
+			if (skb->priority < priority)
+				break;
+
+			skb = skb_dequeue(&chan->data_q);
+
+			blocks = __get_blocks(hdev, skb);
+			if (blocks > hdev->block_cnt)
+				return;
+
+			hci_conn_enter_active_mode(chan->conn,
+						bt_cb(skb)->force_active);
+
+			hci_send_frame(skb);
+			hdev->acl_last_tx = jiffies;
+
+			hdev->block_cnt -= blocks;
+			quote -= blocks;
+
+			chan->sent += blocks;
+			chan->conn->sent += blocks;
 		}
 	}
+
+	if (cnt != hdev->block_cnt)
+		hci_prio_recalculate(hdev, ACL_LINK);
+}
+
+static inline void hci_sched_acl(struct hci_dev *hdev)
+{
+	BT_DBG("%s", hdev->name);
+
+	if (!hci_conn_num(hdev, ACL_LINK))
+		return;
+
+	switch (hdev->flow_ctl_mode) {
+	case HCI_FLOW_CTL_MODE_PACKET_BASED:
+		hci_sched_acl_pkt(hdev);
+		break;
+
+	case HCI_FLOW_CTL_MODE_BLOCK_BASED:
+		hci_sched_acl_blk(hdev);
+		break;
+	}
 }
 
 /* Schedule SCO */
@@ -2182,9 +2670,9 @@ static inline void hci_sched_esco(struct hci_dev *hdev)
 
 static inline void hci_sched_le(struct hci_dev *hdev)
 {
-	struct hci_conn *conn;
+	struct hci_chan *chan;
 	struct sk_buff *skb;
-	int quote, cnt;
+	int quote, cnt, tmp;
 
 	BT_DBG("%s", hdev->name);
 
@@ -2200,30 +2688,42 @@ static inline void hci_sched_le(struct hci_dev *hdev)
 	}
 
 	cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt;
-	while (cnt && (conn = hci_low_sent(hdev, LE_LINK, &quote))) {
-		while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
-			BT_DBG("skb %p len %d", skb, skb->len);
+	tmp = cnt;
+	while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, &quote))) {
+		u32 priority = (skb_peek(&chan->data_q))->priority;
+		while (quote-- && (skb = skb_peek(&chan->data_q))) {
+			BT_DBG("chan %p skb %p len %d priority %u", chan, skb,
+					skb->len, skb->priority);
+
+			/* Stop if priority has changed */
+			if (skb->priority < priority)
+				break;
+
+			skb = skb_dequeue(&chan->data_q);
 
 			hci_send_frame(skb);
 			hdev->le_last_tx = jiffies;
 
 			cnt--;
-			conn->sent++;
+			chan->sent++;
+			chan->conn->sent++;
 		}
 	}
+
 	if (hdev->le_pkts)
 		hdev->le_cnt = cnt;
 	else
 		hdev->acl_cnt = cnt;
+
+	if (cnt != tmp)
+		hci_prio_recalculate(hdev, LE_LINK);
 }
 
-static void hci_tx_task(unsigned long arg)
+static void hci_tx_work(struct work_struct *work)
 {
-	struct hci_dev *hdev = (struct hci_dev *) arg;
+	struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work);
 	struct sk_buff *skb;
 
-	read_lock(&hci_task_lock);
-
 	BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt,
 		hdev->sco_cnt, hdev->le_cnt);
 
@@ -2240,8 +2740,6 @@ static void hci_tx_task(unsigned long arg)
 	/* Send next queued raw (unknown type) packet */
 	while ((skb = skb_dequeue(&hdev->raw_q)))
 		hci_send_frame(skb);
-
-	read_unlock(&hci_task_lock);
 }
 
 /* ----- HCI RX task (incoming data processing) ----- */
@@ -2268,16 +2766,11 @@ static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb)
 	hci_dev_unlock(hdev);
 
 	if (conn) {
-		register struct hci_proto *hp;
-
-		hci_conn_enter_active_mode(conn, bt_cb(skb)->force_active);
+		hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF);
 
 		/* Send to upper protocol */
-		hp = hci_proto[HCI_PROTO_L2CAP];
-		if (hp && hp->recv_acldata) {
-			hp->recv_acldata(conn, skb, flags);
-			return;
-		}
+		l2cap_recv_acldata(conn, skb, flags);
+		return;
 	} else {
 		BT_ERR("%s ACL packet for unknown connection handle %d",
 			hdev->name, handle);
@@ -2306,14 +2799,9 @@ static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb)
 	hci_dev_unlock(hdev);
 
 	if (conn) {
-		register struct hci_proto *hp;
-
 		/* Send to upper protocol */
-		hp = hci_proto[HCI_PROTO_SCO];
-		if (hp && hp->recv_scodata) {
-			hp->recv_scodata(conn, skb);
-			return;
-		}
+		sco_recv_scodata(conn, skb);
+		return;
 	} else {
 		BT_ERR("%s SCO packet for unknown connection handle %d",
 			hdev->name, handle);
@@ -2322,15 +2810,13 @@ static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb)
 	kfree_skb(skb);
 }
 
-static void hci_rx_task(unsigned long arg)
+static void hci_rx_work(struct work_struct *work)
 {
-	struct hci_dev *hdev = (struct hci_dev *) arg;
+	struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work);
 	struct sk_buff *skb;
 
 	BT_DBG("%s", hdev->name);
 
-	read_lock(&hci_task_lock);
-
 	while ((skb = skb_dequeue(&hdev->rx_q))) {
 		if (atomic_read(&hdev->promisc)) {
 			/* Send copy to the sockets */
@@ -2355,6 +2841,7 @@ static void hci_rx_task(unsigned long arg)
 		/* Process frame */
 		switch (bt_cb(skb)->pkt_type) {
 		case HCI_EVENT_PKT:
+			BT_DBG("%s Event packet", hdev->name);
 			hci_event_packet(hdev, skb);
 			break;
 
@@ -2373,13 +2860,11 @@ static void hci_rx_task(unsigned long arg)
 			break;
 		}
 	}
-
-	read_unlock(&hci_task_lock);
 }
 
-static void hci_cmd_task(unsigned long arg)
+static void hci_cmd_work(struct work_struct *work)
 {
-	struct hci_dev *hdev = (struct hci_dev *) arg;
+	struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work);
 	struct sk_buff *skb;
 
 	BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt));
@@ -2403,7 +2888,40 @@ static void hci_cmd_task(unsigned long arg)
 				  jiffies + msecs_to_jiffies(HCI_CMD_TIMEOUT));
 		} else {
 			skb_queue_head(&hdev->cmd_q, skb);
-			tasklet_schedule(&hdev->cmd_task);
+			queue_work(hdev->workqueue, &hdev->cmd_work);
 		}
 	}
 }
+
+int hci_do_inquiry(struct hci_dev *hdev, u8 length)
+{
+	/* General inquiry access code (GIAC) */
+	u8 lap[3] = { 0x33, 0x8b, 0x9e };
+	struct hci_cp_inquiry cp;
+
+	BT_DBG("%s", hdev->name);
+
+	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;
+
+	return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp);
+}
+
+int hci_cancel_inquiry(struct hci_dev *hdev)
+{
+	BT_DBG("%s", hdev->name);
+
+	if (!test_bit(HCI_INQUIRY, &hdev->flags))
+		return -EPERM;
+
+	return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL);
+}
+
+module_param(enable_hs, bool, 0644);
+MODULE_PARM_DESC(enable_hs, "Enable High Speed");