static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_mode_change *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
	if (conn) {
		conn->mode = ev->mode;

		if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
					&conn->flags)) {
			if (conn->mode == HCI_CM_ACTIVE)
				set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
			else
				clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
		}

		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
			hci_sco_setup(conn, ev->status);
	}

	hci_dev_unlock(hdev);
}


static void hci_cc_write_auth_payload_timeout(struct hci_dev *hdev,
					      struct sk_buff *skb)
{
	struct hci_rp_write_auth_payload_to *rp = (void *)skb->data;
	struct hci_conn *conn;
	void *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
	if (!sent)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
	if (conn)
		conn->auth_payload_timeout = get_unaligned_le16(sent + 2);

	hci_dev_unlock(hdev);
}

Bluetooth: Fix slab-out-of-bounds read in hci_extended_inquiry_result_evt()

Check upon `num_rsp` is insufficient. A malformed event packet with a
large `num_rsp` number makes hci_extended_inquiry_result_evt() go out
of bounds. Fix it.

This patch fixes the following syzbot bug:

    https://syzkaller.appspot.com/bug?id=4bf11aa05c4ca51ce0df86e500fce486552dc8d2

Reported-by: syzbot+d8489a79b781849b9c46@syzkaller.appspotmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>


static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_pkt_type_change *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
	if (conn && !ev->status)
		conn->pkt_type = __le16_to_cpu(ev->pkt_type);

	hci_dev_unlock(hdev);
}


static void hci_cc_le_add_to_resolv_list(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_cp_le_add_to_resolv_list *sent;
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
	if (!sent)
		return;

	hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
				sent->bdaddr_type, sent->peer_irk,
				sent->local_irk);
}


static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_link_key_req *ev = (void *) skb->data;
	struct hci_cp_link_key_reply cp;
	struct hci_conn *conn;
	struct link_key *key;

	BT_DBG("%s", hdev->name);

	if (!hci_dev_test_flag(hdev, HCI_MGMT))
		return;

	hci_dev_lock(hdev);

	key = hci_find_link_key(hdev, &ev->bdaddr);
	if (!key) {
		BT_DBG("%s link key not found for %pMR", hdev->name,
		       &ev->bdaddr);
		goto not_found;
	}

	BT_DBG("%s found key type %u for %pMR", hdev->name, key->type,
	       &ev->bdaddr);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (conn) {
		clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);

		if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
		     key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
		    conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
			BT_DBG("%s ignoring unauthenticated key", hdev->name);
			goto not_found;
		}

		if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
		    (conn->pending_sec_level == BT_SECURITY_HIGH ||
		     conn->pending_sec_level == BT_SECURITY_FIPS)) {
			BT_DBG("%s ignoring key unauthenticated for high security",
			       hdev->name);
			goto not_found;
		}

		conn_set_key(conn, key->type, key->pin_len);
	}

	bacpy(&cp.bdaddr, &ev->bdaddr);
	memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);

	hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);

	hci_dev_unlock(hdev);

	return;

not_found:
	hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
	hci_dev_unlock(hdev);
}


static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_disconn_complete *ev = (void *) skb->data;
	u8 reason;
	struct hci_conn_params *params;
	struct hci_conn *conn;
	bool mgmt_connected;
	u8 type;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
	if (!conn)
		goto unlock;

	if (ev->status) {
		mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
				       conn->dst_type, ev->status);
		goto unlock;
	}

	conn->state = BT_CLOSED;

	mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);

	if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
		reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
	else
		reason = hci_to_mgmt_reason(ev->reason);

	mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
				reason, mgmt_connected);

	if (conn->type == ACL_LINK) {
		if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
			hci_remove_link_key(hdev, &conn->dst);

		hci_req_update_scan(hdev);
	}

	params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
	if (params) {
		switch (params->auto_connect) {
		case HCI_AUTO_CONN_LINK_LOSS:
			if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
				break;
			/* Fall through */

		case HCI_AUTO_CONN_DIRECT:
		case HCI_AUTO_CONN_ALWAYS:
			list_del_init(&params->action);
			list_add(&params->action, &hdev->pend_le_conns);
			hci_update_background_scan(hdev);
			break;

		default:
			break;
		}
	}

	type = conn->type;

	hci_disconn_cfm(conn, ev->reason);
	hci_conn_del(conn);

	/* The suspend notifier is waiting for all devices to disconnect so
	 * clear the bit from pending tasks and inform the wait queue.
	 */
	if (list_empty(&hdev->conn_hash.list) &&
	    test_and_clear_bit(SUSPEND_DISCONNECTING, hdev->suspend_tasks)) {
		wake_up(&hdev->suspend_wait_q);
	}

	/* Re-enable advertising if necessary, since it might
	 * have been disabled by the connection. From the
	 * HCI_LE_Set_Advertise_Enable command description in
	 * the core specification (v4.0):
	 * "The Controller shall continue advertising until the Host
	 * issues an LE_Set_Advertise_Enable command with
	 * Advertising_Enable set to 0x00 (Advertising is disabled)
	 * or until a connection is created or until the Advertising
	 * is timed out due to Directed Advertising."
	 */
	if (type == LE_LINK)
		hci_req_reenable_advertising(hdev);

unlock:
	hci_dev_unlock(hdev);
}


static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev,
					     struct sk_buff *skb)
{
	struct hci_ev_disconn_phy_link_complete *ev = (void *) skb->data;
	struct hci_conn *hcon;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	if (ev->status)
		return;

	hci_dev_lock(hdev);

	hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
	if (hcon) {
		hcon->state = BT_CLOSED;
		hci_conn_del(hcon);
	}

	hci_dev_unlock(hdev);
}


static void hci_remote_oob_data_request_evt(struct hci_dev *hdev,
					    struct sk_buff *skb)
{
	struct hci_ev_remote_oob_data_request *ev = (void *) skb->data;
	struct oob_data *data;

	BT_DBG("%s", hdev->name);

	hci_dev_lock(hdev);

	if (!hci_dev_test_flag(hdev, HCI_MGMT))
		goto unlock;

	data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
	if (!data) {
		struct hci_cp_remote_oob_data_neg_reply cp;

		bacpy(&cp.bdaddr, &ev->bdaddr);
		hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
			     sizeof(cp), &cp);
		goto unlock;
	}

	if (bredr_sc_enabled(hdev)) {
		struct hci_cp_remote_oob_ext_data_reply cp;

		bacpy(&cp.bdaddr, &ev->bdaddr);
		if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
			memset(cp.hash192, 0, sizeof(cp.hash192));
			memset(cp.rand192, 0, sizeof(cp.rand192));
		} else {
			memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
			memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
		}
		memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
		memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));

		hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
			     sizeof(cp), &cp);
	} else {
		struct hci_cp_remote_oob_data_reply cp;

		bacpy(&cp.bdaddr, &ev->bdaddr);
		memcpy(cp.hash, data->hash192, sizeof(cp.hash));
		memcpy(cp.rand, data->rand192, sizeof(cp.rand));

		hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
			     sizeof(cp), &cp);
	}

unlock:
	hci_dev_unlock(hdev);
}


static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
{
	hci_dev_lock(hdev);

	switch (enable) {
	case LE_SCAN_ENABLE:
		hci_dev_set_flag(hdev, HCI_LE_SCAN);
		if (hdev->le_scan_type == LE_SCAN_ACTIVE)
			clear_pending_adv_report(hdev);
		break;

	case LE_SCAN_DISABLE:
		/* We do this here instead of when setting DISCOVERY_STOPPED
		 * since the latter would potentially require waiting for
		 * inquiry to stop too.
		 */
		if (has_pending_adv_report(hdev)) {
			struct discovery_state *d = &hdev->discovery;

			mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
					  d->last_adv_addr_type, NULL,
					  d->last_adv_rssi, d->last_adv_flags,
					  d->last_adv_data,
					  d->last_adv_data_len, NULL, 0);
		}

		/* Cancel this timer so that we don't try to disable scanning
		 * when it's already disabled.
		 */
		cancel_delayed_work(&hdev->le_scan_disable);

		hci_dev_clear_flag(hdev, HCI_LE_SCAN);

		/* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
		 * interrupted scanning due to a connect request. Mark
		 * therefore discovery as stopped. If this was not
		 * because of a connect request advertising might have
		 * been disabled because of active scanning, so
		 * re-enable it again if necessary.
		 */
		if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
			hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
		else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
			 hdev->discovery.state == DISCOVERY_FINDING)
			hci_req_reenable_advertising(hdev);

		break;

	default:
		bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
			   enable);
		break;
	}

	hci_dev_unlock(hdev);
}


static void hci_le_phy_update_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_le_phy_update_complete *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	if (!ev->status)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
	if (!conn)
		goto unlock;

	conn->le_tx_phy = ev->tx_phy;
	conn->le_rx_phy = ev->rx_phy;

unlock:
	hci_dev_unlock(hdev);
}


static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
			      u8 peer_addr_type, u8 own_address_type,
			      u8 filter_policy)
{
	struct hci_conn *conn;

	conn = hci_conn_hash_lookup_le(hdev, peer_addr,
				       peer_addr_type);
	if (!conn)
		return;

	/* Store the initiator and responder address information which
	 * is needed for SMP. These values will not change during the
	 * lifetime of the connection.
	 */
	conn->init_addr_type = own_address_type;
	if (own_address_type == ADDR_LE_DEV_RANDOM)
		bacpy(&conn->init_addr, &hdev->random_addr);
	else
		bacpy(&conn->init_addr, &hdev->bdaddr);

	conn->resp_addr_type = peer_addr_type;
	bacpy(&conn->resp_addr, peer_addr);

	/* We don't want the connection attempt to stick around
	 * indefinitely since LE doesn't have a page timeout concept
	 * like BR/EDR. Set a timer for any connection that doesn't use
	 * the white list for connecting.
	 */
	if (filter_policy == HCI_LE_USE_PEER_ADDR)
		queue_delayed_work(conn->hdev->workqueue,
				   &conn->le_conn_timeout,
				   conn->conn_timeout);
}


static void hci_cc_read_page_scan_type(struct hci_dev *hdev,
					   struct sk_buff *skb)
{
	struct hci_rp_read_page_scan_type *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	if (test_bit(HCI_INIT, &hdev->flags))
		hdev->page_scan_type = rp->type;
}


static void hci_cc_user_passkey_reply(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_user_confirm_reply *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	hci_dev_lock(hdev);

	if (hci_dev_test_flag(hdev, HCI_MGMT))
		mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
						 0, rp->status);

	hci_dev_unlock(hdev);
}


static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
				      u8 reason)
{
	struct hci_cp_le_conn_param_req_neg_reply cp;

	cp.handle = cpu_to_le16(handle);
	cp.reason = reason;

	hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
		     &cp);
}


static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_local_version *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
	    hci_dev_test_flag(hdev, HCI_CONFIG)) {
		hdev->hci_ver = rp->hci_ver;
		hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
		hdev->lmp_ver = rp->lmp_ver;
		hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
		hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
	}
}


static void hci_cc_read_page_scan_activity(struct hci_dev *hdev,
					   struct sk_buff *skb)
{
	struct hci_rp_read_page_scan_activity *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	if (test_bit(HCI_INIT, &hdev->flags)) {
		hdev->page_scan_interval = __le16_to_cpu(rp->interval);
		hdev->page_scan_window = __le16_to_cpu(rp->window);
	}
}


static void hci_remote_host_features_evt(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_ev_remote_host_features *ev = (void *) skb->data;
	struct inquiry_entry *ie;
	struct hci_conn *conn;

	BT_DBG("%s", hdev->name);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (conn)
		memcpy(conn->features[1], ev->features, 8);

	ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
	if (ie)
		ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);

	hci_dev_unlock(hdev);
}


static int hci_resolve_name(struct hci_dev *hdev,
				   struct inquiry_entry *e)
{
	struct hci_cp_remote_name_req cp;

	memset(&cp, 0, sizeof(cp));

	bacpy(&cp.bdaddr, &e->data.bdaddr);
	cp.pscan_rep_mode = e->data.pscan_rep_mode;
	cp.pscan_mode = e->data.pscan_mode;
	cp.clock_offset = e->data.clock_offset;

	return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
}


static void hci_cc_write_def_err_data_reporting(struct hci_dev *hdev,
						struct sk_buff *skb)
{
	__u8 status = *((__u8 *)skb->data);
	struct hci_cp_write_def_err_data_reporting *cp;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
	if (!cp)
		return;

	hdev->err_data_reporting = cp->err_data_reporting;
}


static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_user_confirm_reply *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	hci_dev_lock(hdev);

	if (hci_dev_test_flag(hdev, HCI_MGMT))
		mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
						 rp->status);

	hci_dev_unlock(hdev);
}


static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb,
			       u16 *opcode, u8 *status,
			       hci_req_complete_t *req_complete,
			       hci_req_complete_skb_t *req_complete_skb)
{
	struct hci_ev_cmd_status *ev = (void *) skb->data;

	skb_pull(skb, sizeof(*ev));

	*opcode = __le16_to_cpu(ev->opcode);
	*status = ev->status;

	switch (*opcode) {
	case HCI_OP_INQUIRY:
		hci_cs_inquiry(hdev, ev->status);
		break;

	case HCI_OP_CREATE_CONN:
		hci_cs_create_conn(hdev, ev->status);
		break;

	case HCI_OP_DISCONNECT:
		hci_cs_disconnect(hdev, ev->status);
		break;

	case HCI_OP_ADD_SCO:
		hci_cs_add_sco(hdev, ev->status);
		break;

	case HCI_OP_AUTH_REQUESTED:
		hci_cs_auth_requested(hdev, ev->status);
		break;

	case HCI_OP_SET_CONN_ENCRYPT:
		hci_cs_set_conn_encrypt(hdev, ev->status);
		break;

	case HCI_OP_REMOTE_NAME_REQ:
		hci_cs_remote_name_req(hdev, ev->status);
		break;

	case HCI_OP_READ_REMOTE_FEATURES:
		hci_cs_read_remote_features(hdev, ev->status);
		break;

	case HCI_OP_READ_REMOTE_EXT_FEATURES:
		hci_cs_read_remote_ext_features(hdev, ev->status);
		break;

	case HCI_OP_SETUP_SYNC_CONN:
		hci_cs_setup_sync_conn(hdev, ev->status);
		break;

	case HCI_OP_SNIFF_MODE:
		hci_cs_sniff_mode(hdev, ev->status);
		break;

	case HCI_OP_EXIT_SNIFF_MODE:
		hci_cs_exit_sniff_mode(hdev, ev->status);
		break;

	case HCI_OP_SWITCH_ROLE:
		hci_cs_switch_role(hdev, ev->status);
		break;

	case HCI_OP_LE_CREATE_CONN:
		hci_cs_le_create_conn(hdev, ev->status);
		break;

	case HCI_OP_LE_READ_REMOTE_FEATURES:
		hci_cs_le_read_remote_features(hdev, ev->status);
		break;

	case HCI_OP_LE_START_ENC:
		hci_cs_le_start_enc(hdev, ev->status);
		break;

	case HCI_OP_LE_EXT_CREATE_CONN:
		hci_cs_le_ext_create_conn(hdev, ev->status);
		break;

	default:
		BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
		break;
	}

	if (*opcode != HCI_OP_NOP)
		cancel_delayed_work(&hdev->cmd_timer);

	if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
		atomic_set(&hdev->cmd_cnt, 1);

	/* Indicate request completion if the command failed. Also, if
	 * we're not waiting for a special event and we get a success
	 * command status we should try to flag the request as completed
	 * (since for this kind of commands there will not be a command
	 * complete event).
	 */
	if (ev->status ||
	    (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->hci.req_event))
		hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
				     req_complete_skb);

	if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
		bt_dev_err(hdev,
			   "unexpected event for opcode 0x%4.4x", *opcode);
		return;
	}

	if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
		queue_work(hdev->workqueue, &hdev->cmd_work);
}


static void hci_cc_read_local_amp_info(struct hci_dev *hdev,
				       struct sk_buff *skb)
{
	struct hci_rp_read_local_amp_info *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hdev->amp_status = rp->amp_status;
	hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
	hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
	hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
	hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
	hdev->amp_type = rp->amp_type;
	hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
	hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
	hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
	hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
}


static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
				      struct sk_buff *skb)
{
	struct hci_cp_le_set_scan_enable *cp;
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
	if (!cp)
		return;

	le_set_scan_enable_complete(hdev, cp->enable);
}


static void hci_cc_write_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_write_link_policy *rp = (void *) skb->data;
	struct hci_conn *conn;
	void *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
	if (!sent)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
	if (conn)
		conn->link_policy = get_unaligned_le16(sent + 2);

	hci_dev_unlock(hdev);
}


static void hci_cc_write_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	void *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
	if (!sent)
		return;

	hci_dev_lock(hdev);

	if (status == 0)
		memcpy(hdev->dev_class, sent, 3);

	if (hci_dev_test_flag(hdev, HCI_MGMT))
		mgmt_set_class_of_dev_complete(hdev, sent, status);

	hci_dev_unlock(hdev);
}


static void hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev,
				      struct sk_buff *skb)
{
	struct hci_cp_le_set_ext_scan_enable *cp;
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
	if (!cp)
		return;

	le_set_scan_enable_complete(hdev, cp->enable);
}


static void hci_cc_remote_name_req_cancel(struct hci_dev *hdev,
					  struct sk_buff *skb)
{
	BT_DBG("%s", hdev->name);
}


static inline size_t eir_get_length(u8 *eir, size_t eir_len)
{
	size_t parsed = 0;

	while (parsed < eir_len) {
		u8 field_len = eir[0];

		if (field_len == 0)
			return parsed;

		parsed += field_len + 1;
		eir += field_len + 1;
	}

	return eir_len;
}


static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev,
					  struct sk_buff *skb)
{
	struct hci_rp_user_confirm_reply *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	hci_dev_lock(hdev);

	if (hci_dev_test_flag(hdev, HCI_MGMT))
		mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
						     ACL_LINK, 0, rp->status);

	hci_dev_unlock(hdev);
}


static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_role_change *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (conn) {
		if (!ev->status)
			conn->role = ev->role;

		clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);

		hci_role_switch_cfm(conn, ev->status, ev->role);
	}

	hci_dev_unlock(hdev);
}


static u8 bredr_oob_data_present(struct hci_conn *conn)
{
	struct hci_dev *hdev = conn->hdev;
	struct oob_data *data;

	data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
	if (!data)
		return 0x00;

	if (bredr_sc_enabled(hdev)) {
		/* When Secure Connections is enabled, then just
		 * return the present value stored with the OOB
		 * data. The stored value contains the right present
		 * information. However it can only be trusted when
		 * not in Secure Connection Only mode.
		 */
		if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
			return data->present;

		/* When Secure Connections Only mode is enabled, then
		 * the P-256 values are required. If they are not
		 * available, then do not declare that OOB data is
		 * present.
		 */
		if (!memcmp(data->rand256, ZERO_KEY, 16) ||
		    !memcmp(data->hash256, ZERO_KEY, 16))
			return 0x00;

		return 0x02;
	}

	/* When Secure Connections is not enabled or actually
	 * not supported by the hardware, then check that if
	 * P-192 data values are present.
	 */
	if (!memcmp(data->rand192, ZERO_KEY, 16) ||
	    !memcmp(data->hash192, ZERO_KEY, 16))
		return 0x00;

	return 0x01;
}


static void hci_extended_inquiry_result_evt(struct hci_dev *hdev,
					    struct sk_buff *skb)
{
	struct inquiry_data data;
	struct extended_inquiry_info *info = (void *) (skb->data + 1);
	int num_rsp = *((__u8 *) skb->data);
	size_t eir_len;

	BT_DBG("%s num_rsp %d", hdev->name, num_rsp);

	if (!num_rsp || skb->len < num_rsp * sizeof(*info) + 1)
		return;

	if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
		return;

	hci_dev_lock(hdev);

	for (; num_rsp; num_rsp--, info++) {
		u32 flags;
		bool name_known;

		bacpy(&data.bdaddr, &info->bdaddr);
		data.pscan_rep_mode	= info->pscan_rep_mode;
		data.pscan_period_mode	= info->pscan_period_mode;
		data.pscan_mode		= 0x00;
		memcpy(data.dev_class, info->dev_class, 3);
		data.clock_offset	= info->clock_offset;
		data.rssi		= info->rssi;
		data.ssp_mode		= 0x01;

		if (hci_dev_test_flag(hdev, HCI_MGMT))
			name_known = eir_get_data(info->data,
						  sizeof(info->data),
						  EIR_NAME_COMPLETE, NULL);
		else
			name_known = true;

		flags = hci_inquiry_cache_update(hdev, &data, name_known);

		eir_len = eir_get_length(info->data, sizeof(info->data));

		mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
				  info->dev_class, info->rssi,
				  flags, info->data, eir_len, NULL, 0);
	}

	hci_dev_unlock(hdev);
}


static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_link_key_notify *ev = (void *) skb->data;
	struct hci_conn *conn;
	struct link_key *key;
	bool persistent;
	u8 pin_len = 0;

	BT_DBG("%s", hdev->name);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (!conn)
		goto unlock;

	hci_conn_hold(conn);
	conn->disc_timeout = HCI_DISCONN_TIMEOUT;
	hci_conn_drop(conn);

	set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
	conn_set_key(conn, ev->key_type, conn->pin_length);

	if (!hci_dev_test_flag(hdev, HCI_MGMT))
		goto unlock;

	key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
			        ev->key_type, pin_len, &persistent);
	if (!key)
		goto unlock;

	/* Update connection information since adding the key will have
	 * fixed up the type in the case of changed combination keys.
	 */
	if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
		conn_set_key(conn, key->type, key->pin_len);

	mgmt_new_link_key(hdev, key, persistent);

	/* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
	 * is set. If it's not set simply remove the key from the kernel
	 * list (we've still notified user space about it but with
	 * store_hint being 0).
	 */
	if (key->type == HCI_LK_DEBUG_COMBINATION &&
	    !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
		list_del_rcu(&key->list);
		kfree_rcu(key, rcu);
		goto unlock;
	}

	if (persistent)
		clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
	else
		set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);

unlock:
	hci_dev_unlock(hdev);
}


static void hci_cc_le_read_supported_states(struct hci_dev *hdev,
					    struct sk_buff *skb)
{
	struct hci_rp_le_read_supported_states *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	memcpy(hdev->le_states, rp->le_states, 8);
}


static void hci_num_comp_blocks_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_num_comp_blocks *ev = (void *) skb->data;
	int i;

	if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
		bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
		return;
	}

	if (skb->len < sizeof(*ev) ||
	    skb->len < struct_size(ev, handles, ev->num_hndl)) {
		BT_DBG("%s bad parameters", hdev->name);
		return;
	}

	BT_DBG("%s num_blocks %d num_hndl %d", hdev->name, ev->num_blocks,
	       ev->num_hndl);

	for (i = 0; i < ev->num_hndl; i++) {
		struct hci_comp_blocks_info *info = &ev->handles[i];
		struct hci_conn *conn = NULL;
		__u16  handle, block_count;

		handle = __le16_to_cpu(info->handle);
		block_count = __le16_to_cpu(info->blocks);

		conn = __hci_conn_lookup_handle(hdev, handle);
		if (!conn)
			continue;

		conn->sent -= block_count;

		switch (conn->type) {
		case ACL_LINK:
		case AMP_LINK:
			hdev->block_cnt += block_count;
			if (hdev->block_cnt > hdev->num_blocks)
				hdev->block_cnt = hdev->num_blocks;
			break;

		default:
			bt_dev_err(hdev, "unknown type %d conn %p",
				   conn->type, conn);
			break;
		}
	}

	queue_work(hdev->workqueue, &hdev->tx_work);
}


static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_ev_simple_pair_complete *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s", hdev->name);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (!conn)
		goto unlock;

	/* Reset the authentication requirement to unknown */
	conn->remote_auth = 0xff;

	/* To avoid duplicate auth_failed events to user space we check
	 * the HCI_CONN_AUTH_PEND flag which will be set if we
	 * initiated the authentication. A traditional auth_complete
	 * event gets always produced as initiator and is also mapped to
	 * the mgmt_auth_failed event */
	if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
		mgmt_auth_failed(conn, ev->status);

	hci_conn_drop(conn);

unlock:
	hci_dev_unlock(hdev);
}


static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_ev_key_refresh_complete *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x handle 0x%4.4x", hdev->name, ev->status,
	       __le16_to_cpu(ev->handle));

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
	if (!conn)
		goto unlock;

	/* For BR/EDR the necessary steps are taken through the
	 * auth_complete event.
	 */
	if (conn->type != LE_LINK)
		goto unlock;

	if (!ev->status)
		conn->sec_level = conn->pending_sec_level;

	clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);

	if (ev->status && conn->state == BT_CONNECTED) {
		hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
		hci_conn_drop(conn);
		goto unlock;
	}

	if (conn->state == BT_CONFIG) {
		if (!ev->status)
			conn->state = BT_CONNECTED;

		hci_connect_cfm(conn, ev->status);
		hci_conn_drop(conn);
	} else {
		hci_auth_cfm(conn, ev->status);

		hci_conn_hold(conn);
		conn->disc_timeout = HCI_DISCONN_TIMEOUT;
		hci_conn_drop(conn);
	}

unlock:
	hci_dev_unlock(hdev);
}


static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
					     struct sk_buff *skb)
{
	struct inquiry_data data;
	int num_rsp = *((__u8 *) skb->data);

	BT_DBG("%s num_rsp %d", hdev->name, num_rsp);

	if (!num_rsp)
		return;

	if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
		return;

	hci_dev_lock(hdev);

	if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) {
		struct inquiry_info_with_rssi_and_pscan_mode *info;
		info = (void *) (skb->data + 1);

		for (; num_rsp; num_rsp--, info++) {
			u32 flags;

			bacpy(&data.bdaddr, &info->bdaddr);
			data.pscan_rep_mode	= info->pscan_rep_mode;
			data.pscan_period_mode	= info->pscan_period_mode;
			data.pscan_mode		= info->pscan_mode;
			memcpy(data.dev_class, info->dev_class, 3);
			data.clock_offset	= info->clock_offset;
			data.rssi		= info->rssi;
			data.ssp_mode		= 0x00;

			flags = hci_inquiry_cache_update(hdev, &data, false);

			mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
					  info->dev_class, info->rssi,
					  flags, NULL, 0, NULL, 0);
		}
	} else {
		struct inquiry_info_with_rssi *info = (void *) (skb->data + 1);

		for (; num_rsp; num_rsp--, info++) {
			u32 flags;

			bacpy(&data.bdaddr, &info->bdaddr);
			data.pscan_rep_mode	= info->pscan_rep_mode;
			data.pscan_period_mode	= info->pscan_period_mode;
			data.pscan_mode		= 0x00;
			memcpy(data.dev_class, info->dev_class, 3);
			data.clock_offset	= info->clock_offset;
			data.rssi		= info->rssi;
			data.ssp_mode		= 0x00;

			flags = hci_inquiry_cache_update(hdev, &data, false);

			mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
					  info->dev_class, info->rssi,
					  flags, NULL, 0, NULL, 0);
		}
	}

	hci_dev_unlock(hdev);
}


static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
{
	struct hci_cp_disconnect *cp;
	struct hci_conn *conn;

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (conn) {
		u8 type = conn->type;

		mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
				       conn->dst_type, status);

		/* If the disconnection failed for any reason, the upper layer
		 * does not retry to disconnect in current implementation.
		 * Hence, we need to do some basic cleanup here and re-enable
		 * advertising if necessary.
		 */
		hci_conn_del(conn);
		if (type == LE_LINK)
			hci_req_reenable_advertising(hdev);
	}

	hci_dev_unlock(hdev);
}


static void hci_cc_read_local_oob_data(struct hci_dev *hdev,
				       struct sk_buff *skb)
{
	struct hci_rp_read_local_oob_data *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
}


static void hci_cc_write_voice_setting(struct hci_dev *hdev,
				       struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	__u16 setting;
	void *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
	if (!sent)
		return;

	setting = get_unaligned_le16(sent);

	if (hdev->voice_setting == setting)
		return;

	hdev->voice_setting = setting;

	BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);

	if (hdev->notify)
		hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
}


static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	__u8 param;
	void *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
	if (!sent)
		return;

	param = *((__u8 *) sent);

	if (param)
		set_bit(HCI_ENCRYPT, &hdev->flags);
	else
		clear_bit(HCI_ENCRYPT, &hdev->flags);
}


static void hci_cc_le_del_from_resolv_list(struct hci_dev *hdev,
					  struct sk_buff *skb)
{
	struct hci_cp_le_del_from_resolv_list *sent;
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
	if (!sent)
		return;

	hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
			    sent->bdaddr_type);
}


static void hci_cc_le_set_ext_scan_param(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_cp_le_set_ext_scan_params *cp;
	__u8 status = *((__u8 *) skb->data);
	struct hci_cp_le_scan_phy_params *phy_param;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
	if (!cp)
		return;

	phy_param = (void *)cp->data;

	hci_dev_lock(hdev);

	hdev->le_scan_type = phy_param->type;

	hci_dev_unlock(hdev);
}


static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_add_sco *cp;
	struct hci_conn *acl, *sco;
	__u16 handle;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
	if (!cp)
		return;

	handle = __le16_to_cpu(cp->handle);

	BT_DBG("%s handle 0x%4.4x", hdev->name, handle);

	hci_dev_lock(hdev);

	acl = hci_conn_hash_lookup_handle(hdev, handle);
	if (acl) {
		sco = acl->link;
		if (sco) {
			sco->state = BT_CLOSED;

			hci_connect_cfm(sco, status);
			hci_conn_del(sco);
		}
	}

	hci_dev_unlock(hdev);
}


static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_clock *rp = (void *) skb->data;
	struct hci_cp_read_clock *cp;
	struct hci_conn *conn;

	BT_DBG("%s", hdev->name);

	if (skb->len < sizeof(*rp))
		return;

	if (rp->status)
		return;

	hci_dev_lock(hdev);

	cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
	if (!cp)
		goto unlock;

	if (cp->which == 0x00) {
		hdev->clock = le32_to_cpu(rp->clock);
		goto unlock;
	}

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
	if (conn) {
		conn->clock = le32_to_cpu(rp->clock);
		conn->clock_accuracy = le16_to_cpu(rp->accuracy);
	}

unlock:
	hci_dev_unlock(hdev);
}


static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_cp_le_set_adv_param *cp;
	u8 status = *((u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
	if (!cp)
		return;

	hci_dev_lock(hdev);
	hdev->adv_addr_type = cp->own_address_type;
	hci_dev_unlock(hdev);
}


static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_create_conn *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);

	BT_DBG("%s bdaddr %pMR hcon %p", hdev->name, &cp->bdaddr, conn);

	if (status) {
		if (conn && conn->state == BT_CONNECT) {
			if (status != 0x0c || conn->attempt > 2) {
				conn->state = BT_CLOSED;
				hci_connect_cfm(conn, status);
				hci_conn_del(conn);
			} else
				conn->state = BT_CONNECT2;
		}
	} else {
		if (!conn) {
			conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
					    HCI_ROLE_MASTER);
			if (!conn)
				bt_dev_err(hdev, "no memory for new connection");
		}
	}

	hci_dev_unlock(hdev);
}


static void hci_cc_read_local_oob_ext_data(struct hci_dev *hdev,
					   struct sk_buff *skb)
{
	struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
}


static void hci_cc_read_local_pairing_opts(struct hci_dev *hdev,
					   struct sk_buff *skb)
{
	struct hci_rp_read_local_pairing_opts *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
	    hci_dev_test_flag(hdev, HCI_CONFIG)) {
		hdev->pairing_opts = rp->pairing_opts;
		hdev->max_enc_key_size = rp->max_key_size;
	}
}


static void hci_cc_write_def_link_policy(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	void *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
	if (!sent)
		return;

	hdev->link_policy = get_unaligned_le16(sent);
}


static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_set_conn_encrypt *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (conn) {
		if (conn->state == BT_CONFIG) {
			hci_connect_cfm(conn, status);
			hci_conn_drop(conn);
		}
	}

	hci_dev_unlock(hdev);
}


static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_exit_sniff_mode *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (conn) {
		clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);

		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
			hci_sco_setup(conn, status);
	}

	hci_dev_unlock(hdev);
}


static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_setup_sync_conn *cp;
	struct hci_conn *acl, *sco;
	__u16 handle;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
	if (!cp)
		return;

	handle = __le16_to_cpu(cp->handle);

	BT_DBG("%s handle 0x%4.4x", hdev->name, handle);

	hci_dev_lock(hdev);

	acl = hci_conn_hash_lookup_handle(hdev, handle);
	if (acl) {
		sco = acl->link;
		if (sco) {
			sco->state = BT_CLOSED;

			hci_connect_cfm(sco, status);
			hci_conn_del(sco);
		}
	}

	hci_dev_unlock(hdev);
}


static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_rssi *rp = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
	if (conn)
		conn->rssi = rp->rssi;

	hci_dev_unlock(hdev);
}


static void hci_cc_le_read_def_data_len(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_rp_le_read_def_data_len *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
	hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
}


static void hci_cc_le_add_to_white_list(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_cp_le_add_to_white_list *sent;
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST);
	if (!sent)
		return;

	hci_bdaddr_list_add(&hdev->le_white_list, &sent->bdaddr,
			   sent->bdaddr_type);
}


static void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_remote_name *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s", hdev->name);

	hci_conn_check_pending(hdev);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);

	if (!hci_dev_test_flag(hdev, HCI_MGMT))
		goto check_auth;

	if (ev->status == 0)
		hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
				       strnlen(ev->name, HCI_MAX_NAME_LENGTH));
	else
		hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);

check_auth:
	if (!conn)
		goto unlock;

	if (!hci_outgoing_auth_needed(hdev, conn))
		goto unlock;

	if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
		struct hci_cp_auth_requested cp;

		set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);

		cp.handle = __cpu_to_le16(conn->handle);
		hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
	}

unlock:
	hci_dev_unlock(hdev);
}


static bool hci_resolve_next_name(struct hci_dev *hdev)
{
	struct discovery_state *discov = &hdev->discovery;
	struct inquiry_entry *e;

	if (list_empty(&discov->resolve))
		return false;

	e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
	if (!e)
		return false;

	if (hci_resolve_name(hdev, e) == 0) {
		e->name_state = NAME_PENDING;
		return true;
	}

	return false;
}


static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_bd_addr *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	if (test_bit(HCI_INIT, &hdev->flags))
		bacpy(&hdev->bdaddr, &rp->bdaddr);

	if (hci_dev_test_flag(hdev, HCI_SETUP))
		bacpy(&hdev->setup_addr, &rp->bdaddr);
}


static void hci_user_passkey_request_evt(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_ev_user_passkey_req *ev = (void *) skb->data;

	BT_DBG("%s", hdev->name);

	if (hci_dev_test_flag(hdev, HCI_MGMT))
		mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
}


static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
{
	struct hci_cp_le_start_enc *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (!status)
		return;

	hci_dev_lock(hdev);

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
	if (!cp)
		goto unlock;

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (!conn)
		goto unlock;

	if (conn->state != BT_CONNECTED)
		goto unlock;

	hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
	hci_conn_drop(conn);

unlock:
	hci_dev_unlock(hdev);
}


static void hci_phy_link_complete_evt(struct hci_dev *hdev,
				      struct sk_buff *skb)
{
	struct hci_ev_phy_link_complete *ev = (void *) skb->data;
	struct hci_conn *hcon, *bredr_hcon;

	BT_DBG("%s handle 0x%2.2x status 0x%2.2x", hdev->name, ev->phy_handle,
	       ev->status);

	hci_dev_lock(hdev);

	hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
	if (!hcon) {
		hci_dev_unlock(hdev);
		return;
	}

	if (ev->status) {
		hci_conn_del(hcon);
		hci_dev_unlock(hdev);
		return;
	}

	bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;

	hcon->state = BT_CONNECTED;
	bacpy(&hcon->dst, &bredr_hcon->dst);

	hci_conn_hold(hcon);
	hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
	hci_conn_drop(hcon);

	hci_debugfs_create_conn(hcon);
	hci_conn_add_sysfs(hcon);

	amp_physical_cfm(bredr_hcon, hcon);

	hci_dev_unlock(hdev);
}


static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_pscan_rep_mode *ev = (void *) skb->data;
	struct inquiry_entry *ie;

	BT_DBG("%s", hdev->name);

	hci_dev_lock(hdev);

	ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
	if (ie) {
		ie->data.pscan_rep_mode = ev->pscan_rep_mode;
		ie->timestamp = jiffies;
	}

	hci_dev_unlock(hdev);
}


static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	clear_bit(HCI_RESET, &hdev->flags);

	if (status)
		return;

	/* Reset all non-persistent flags */
	hci_dev_clear_volatile_flags(hdev);

	hci_discovery_set_state(hdev, DISCOVERY_STOPPED);

	hdev->inq_tx_power = HCI_TX_POWER_INVALID;
	hdev->adv_tx_power = HCI_TX_POWER_INVALID;

	memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
	hdev->adv_data_len = 0;

	memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
	hdev->scan_rsp_data_len = 0;

	hdev->le_scan_type = LE_SCAN_PASSIVE;

	hdev->ssp_debug_mode = 0;

	hci_bdaddr_list_clear(&hdev->le_white_list);
	hci_bdaddr_list_clear(&hdev->le_resolv_list);
}


static void hci_change_link_key_complete_evt(struct hci_dev *hdev,
					     struct sk_buff *skb)
{
	struct hci_ev_change_link_key_complete *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
	if (conn) {
		if (!ev->status)
			set_bit(HCI_CONN_SECURE, &conn->flags);

		clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);

		hci_key_change_cfm(conn, ev->status);
	}

	hci_dev_unlock(hdev);
}


static void hci_cc_write_page_scan_activity(struct hci_dev *hdev,
					    struct sk_buff *skb)
{
	u8 status = *((u8 *) skb->data);
	struct hci_cp_write_page_scan_activity *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
	if (!sent)
		return;

	hdev->page_scan_interval = __le16_to_cpu(sent->interval);
	hdev->page_scan_window = __le16_to_cpu(sent->window);
}


static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev,
					     struct sk_buff *skb)
{
	struct hci_ev_le_remote_conn_param_req *ev = (void *) skb->data;
	struct hci_cp_le_conn_param_req_reply cp;
	struct hci_conn *hcon;
	u16 handle, min, max, latency, timeout;

	handle = le16_to_cpu(ev->handle);
	min = le16_to_cpu(ev->interval_min);
	max = le16_to_cpu(ev->interval_max);
	latency = le16_to_cpu(ev->latency);
	timeout = le16_to_cpu(ev->timeout);

	hcon = hci_conn_hash_lookup_handle(hdev, handle);
	if (!hcon || hcon->state != BT_CONNECTED)
		return send_conn_param_neg_reply(hdev, handle,
						 HCI_ERROR_UNKNOWN_CONN_ID);

	if (hci_check_conn_params(min, max, latency, timeout))
		return send_conn_param_neg_reply(hdev, handle,
						 HCI_ERROR_INVALID_LL_PARAMS);

	if (hcon->role == HCI_ROLE_MASTER) {
		struct hci_conn_params *params;
		u8 store_hint;

		hci_dev_lock(hdev);

		params = hci_conn_params_lookup(hdev, &hcon->dst,
						hcon->dst_type);
		if (params) {
			params->conn_min_interval = min;
			params->conn_max_interval = max;
			params->conn_latency = latency;
			params->supervision_timeout = timeout;
			store_hint = 0x01;
		} else{
			store_hint = 0x00;
		}

		hci_dev_unlock(hdev);

		mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
				    store_hint, min, max, latency, timeout);
	}

	cp.handle = ev->handle;
	cp.interval_min = ev->interval_min;
	cp.interval_max = ev->interval_max;
	cp.latency = ev->latency;
	cp.timeout = ev->timeout;
	cp.min_ce_len = 0;
	cp.max_ce_len = 0;

	hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
}


static void hci_cc_write_page_scan_type(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	u8 status = *((u8 *) skb->data);
	u8 *type;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
	if (type)
		hdev->page_scan_type = *type;
}


static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
{
	struct hci_cp_switch_role *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
	if (conn)
		clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);

	hci_dev_unlock(hdev);
}


static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev,
					  struct sk_buff *skb)
{
	struct hci_rp_user_confirm_reply *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	hci_dev_lock(hdev);

	if (hci_dev_test_flag(hdev, HCI_MGMT))
		mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
						     ACL_LINK, 0, rp->status);

	hci_dev_unlock(hdev);
}


static u8 hci_to_mgmt_reason(u8 err)
{
	switch (err) {
	case HCI_ERROR_CONNECTION_TIMEOUT:
		return MGMT_DEV_DISCONN_TIMEOUT;
	case HCI_ERROR_REMOTE_USER_TERM:
	case HCI_ERROR_REMOTE_LOW_RESOURCES:
	case HCI_ERROR_REMOTE_POWER_OFF:
		return MGMT_DEV_DISCONN_REMOTE;
	case HCI_ERROR_LOCAL_HOST_TERM:
		return MGMT_DEV_DISCONN_LOCAL_HOST;
	default:
		return MGMT_DEV_DISCONN_UNKNOWN;
	}
}


static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
				       struct sk_buff *skb)
{
	struct hci_rp_le_read_buffer_size *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
	hdev->le_pkts = rp->le_max_pkt;

	hdev->le_cnt = hdev->le_pkts;

	BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
}


static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_ev_le_enh_conn_complete *ev = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
			     ev->role, le16_to_cpu(ev->handle),
			     le16_to_cpu(ev->interval),
			     le16_to_cpu(ev->latency),
			     le16_to_cpu(ev->supervision_timeout));
}


static void hci_cc_read_buffer_size(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_buffer_size *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hdev->acl_mtu  = __le16_to_cpu(rp->acl_mtu);
	hdev->sco_mtu  = rp->sco_mtu;
	hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
	hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);

	if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
		hdev->sco_mtu  = 64;
		hdev->sco_pkts = 8;
	}

	hdev->acl_cnt = hdev->acl_pkts;
	hdev->sco_cnt = hdev->sco_pkts;

	BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
	       hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
}


static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_channel_selected *ev = (void *)skb->data;
	struct hci_conn *hcon;

	BT_DBG("%s handle 0x%2.2x", hdev->name, ev->phy_handle);

	skb_pull(skb, sizeof(*ev));

	hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
	if (!hcon)
		return;

	amp_read_loc_assoc_final_data(hdev, hcon);
}


static void hci_user_confirm_request_evt(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_ev_user_confirm_req *ev = (void *) skb->data;
	int loc_mitm, rem_mitm, confirm_hint = 0;
	struct hci_conn *conn;

	BT_DBG("%s", hdev->name);

	hci_dev_lock(hdev);

	if (!hci_dev_test_flag(hdev, HCI_MGMT))
		goto unlock;

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (!conn)
		goto unlock;

	loc_mitm = (conn->auth_type & 0x01);
	rem_mitm = (conn->remote_auth & 0x01);

	/* If we require MITM but the remote device can't provide that
	 * (it has NoInputNoOutput) then reject the confirmation
	 * request. We check the security level here since it doesn't
	 * necessarily match conn->auth_type.
	 */
	if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
	    conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
		BT_DBG("Rejecting request: remote device can't provide MITM");
		hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
			     sizeof(ev->bdaddr), &ev->bdaddr);
		goto unlock;
	}

	/* If no side requires MITM protection; auto-accept */
	if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
	    (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {

		/* If we're not the initiators request authorization to
		 * proceed from user space (mgmt_user_confirm with
		 * confirm_hint set to 1). The exception is if neither
		 * side had MITM or if the local IO capability is
		 * NoInputNoOutput, in which case we do auto-accept
		 */
		if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
		    conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
		    (loc_mitm || rem_mitm)) {
			BT_DBG("Confirming auto-accept as acceptor");
			confirm_hint = 1;
			goto confirm;
		}

		/* If there already exists link key in local host, leave the
		 * decision to user space since the remote device could be
		 * legitimate or malicious.
		 */
		if (hci_find_link_key(hdev, &ev->bdaddr)) {
			bt_dev_dbg(hdev, "Local host already has link key");
			confirm_hint = 1;
			goto confirm;
		}

		BT_DBG("Auto-accept of user confirmation with %ums delay",
		       hdev->auto_accept_delay);

		if (hdev->auto_accept_delay > 0) {
			int delay = msecs_to_jiffies(hdev->auto_accept_delay);
			queue_delayed_work(conn->hdev->workqueue,
					   &conn->auto_accept_work, delay);
			goto unlock;
		}

		hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
			     sizeof(ev->bdaddr), &ev->bdaddr);
		goto unlock;
	}

confirm:
	mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
				  le32_to_cpu(ev->passkey), confirm_hint);

unlock:
	hci_dev_unlock(hdev);
}


static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct inquiry_data data;
	struct inquiry_info *info = (void *) (skb->data + 1);
	int num_rsp = *((__u8 *) skb->data);

	BT_DBG("%s num_rsp %d", hdev->name, num_rsp);

	if (!num_rsp)
		return;

	if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
		return;

	hci_dev_lock(hdev);

	for (; num_rsp; num_rsp--, info++) {
		u32 flags;

		bacpy(&data.bdaddr, &info->bdaddr);
		data.pscan_rep_mode	= info->pscan_rep_mode;
		data.pscan_period_mode	= info->pscan_period_mode;
		data.pscan_mode		= info->pscan_mode;
		memcpy(data.dev_class, info->dev_class, 3);
		data.clock_offset	= info->clock_offset;
		data.rssi		= HCI_RSSI_INVALID;
		data.ssp_mode		= 0x00;

		flags = hci_inquiry_cache_update(hdev, &data, false);

		mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
				  info->dev_class, HCI_RSSI_INVALID,
				  flags, NULL, 0, NULL, 0);
	}

	hci_dev_unlock(hdev);
}


static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_sniff_mode *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (conn) {
		clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);

		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
			hci_sco_setup(conn, status);
	}

	hci_dev_unlock(hdev);
}


static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_le_conn_complete *ev = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
			     ev->role, le16_to_cpu(ev->handle),
			     le16_to_cpu(ev->interval),
			     le16_to_cpu(ev->latency),
			     le16_to_cpu(ev->supervision_timeout));
}


static void hci_cc_read_def_link_policy(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_rp_read_def_link_policy *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hdev->link_policy = __le16_to_cpu(rp->policy);
}


static void hci_cc_read_stored_link_key(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_rp_read_stored_link_key *rp = (void *)skb->data;
	struct hci_cp_read_stored_link_key *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
	if (!sent)
		return;

	if (!rp->status && sent->read_all == 0x01) {
		hdev->stored_max_keys = rp->max_keys;
		hdev->stored_num_keys = rp->num_keys;
	}
}


static void hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev,
                                              struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	struct hci_cp_le_set_adv_set_rand_addr *cp;
	struct adv_info *adv_instance;

	if (status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	if (!hdev->cur_adv_instance) {
		/* Store in hdev for instance 0 (Set adv and Directed advs) */
		bacpy(&hdev->random_addr, &cp->bdaddr);
	} else {
		adv_instance = hci_find_adv_instance(hdev,
						     hdev->cur_adv_instance);
		if (adv_instance)
			bacpy(&adv_instance->random_addr, &cp->bdaddr);
	}

	hci_dev_unlock(hdev);
}


static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_evt_le_ext_adv_set_term *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	if (ev->status)
		return;

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
	if (conn) {
		struct adv_info *adv_instance;

		if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM)
			return;

		if (!hdev->cur_adv_instance) {
			bacpy(&conn->resp_addr, &hdev->random_addr);
			return;
		}

		adv_instance = hci_find_adv_instance(hdev, hdev->cur_adv_instance);
		if (adv_instance)
			bacpy(&conn->resp_addr, &adv_instance->random_addr);
	}
}


static void hci_cc_read_local_features(struct hci_dev *hdev,
				       struct sk_buff *skb)
{
	struct hci_rp_read_local_features *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	memcpy(hdev->features, rp->features, 8);

	/* Adjust default settings according to features
	 * supported by device. */

	if (hdev->features[0][0] & LMP_3SLOT)
		hdev->pkt_type |= (HCI_DM3 | HCI_DH3);

	if (hdev->features[0][0] & LMP_5SLOT)
		hdev->pkt_type |= (HCI_DM5 | HCI_DH5);

	if (hdev->features[0][1] & LMP_HV2) {
		hdev->pkt_type  |= (HCI_HV2);
		hdev->esco_type |= (ESCO_HV2);
	}

	if (hdev->features[0][1] & LMP_HV3) {
		hdev->pkt_type  |= (HCI_HV3);
		hdev->esco_type |= (ESCO_HV3);
	}

	if (lmp_esco_capable(hdev))
		hdev->esco_type |= (ESCO_EV3);

	if (hdev->features[0][4] & LMP_EV4)
		hdev->esco_type |= (ESCO_EV4);

	if (hdev->features[0][4] & LMP_EV5)
		hdev->esco_type |= (ESCO_EV5);

	if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
		hdev->esco_type |= (ESCO_2EV3);

	if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
		hdev->esco_type |= (ESCO_3EV3);

	if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
		hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
}


static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_keypress_notify *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s", hdev->name);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (!conn)
		return;

	switch (ev->type) {
	case HCI_KEYPRESS_STARTED:
		conn->passkey_entered = 0;
		return;

	case HCI_KEYPRESS_ENTERED:
		conn->passkey_entered++;
		break;

	case HCI_KEYPRESS_ERASED:
		conn->passkey_entered--;
		break;

	case HCI_KEYPRESS_CLEARED:
		conn->passkey_entered = 0;
		break;

	case HCI_KEYPRESS_COMPLETED:
		return;
	}

	if (hci_dev_test_flag(hdev, HCI_MGMT))
		mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
					 conn->dst_type, conn->passkey_notify,
					 conn->passkey_entered);
}


static void hci_cc_role_discovery(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_role_discovery *rp = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
	if (conn)
		conn->role = rp->role;

	hci_dev_unlock(hdev);
}


static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_rp_read_inq_rsp_tx_power *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hdev->inq_tx_power = rp->tx_power;
}


static void hci_cc_le_clear_resolv_list(struct hci_dev *hdev,
				       struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	hci_bdaddr_list_clear(&hdev->le_resolv_list);
}


static void hci_cc_le_read_resolv_list_size(struct hci_dev *hdev,
					   struct sk_buff *skb)
{
	struct hci_rp_le_read_resolv_list_size *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size);

	if (rp->status)
		return;

	hdev->le_resolv_list_size = rp->size;
}


static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_cp_read_tx_power *sent;
	struct hci_rp_read_tx_power *rp = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
	if (!sent)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
	if (!conn)
		goto unlock;

	switch (sent->type) {
	case 0x00:
		conn->tx_power = rp->tx_power;
		break;
	case 0x01:
		conn->max_tx_power = rp->tx_power;
		break;
	}

unlock:
	hci_dev_unlock(hdev);
}


static void hci_cc_read_data_block_size(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_rp_read_data_block_size *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
	hdev->block_len = __le16_to_cpu(rp->block_len);
	hdev->num_blocks = __le16_to_cpu(rp->num_blocks);

	hdev->block_cnt = hdev->num_blocks;

	BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
	       hdev->block_cnt, hdev->block_len);
}


static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
{
	struct hci_cp_reject_conn_req cp;

	bacpy(&cp.bdaddr, bdaddr);
	cp.reason = HCI_ERROR_REJ_BAD_ADDR;
	hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
}


static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb,
				 u16 *opcode, u8 *status,
				 hci_req_complete_t *req_complete,
				 hci_req_complete_skb_t *req_complete_skb)
{
	struct hci_ev_cmd_complete *ev = (void *) skb->data;

	*opcode = __le16_to_cpu(ev->opcode);
	*status = skb->data[sizeof(*ev)];

	skb_pull(skb, sizeof(*ev));

	switch (*opcode) {
	case HCI_OP_INQUIRY_CANCEL:
		hci_cc_inquiry_cancel(hdev, skb, status);
		break;

	case HCI_OP_PERIODIC_INQ:
		hci_cc_periodic_inq(hdev, skb);
		break;

	case HCI_OP_EXIT_PERIODIC_INQ:
		hci_cc_exit_periodic_inq(hdev, skb);
		break;

	case HCI_OP_REMOTE_NAME_REQ_CANCEL:
		hci_cc_remote_name_req_cancel(hdev, skb);
		break;

	case HCI_OP_ROLE_DISCOVERY:
		hci_cc_role_discovery(hdev, skb);
		break;

	case HCI_OP_READ_LINK_POLICY:
		hci_cc_read_link_policy(hdev, skb);
		break;

	case HCI_OP_WRITE_LINK_POLICY:
		hci_cc_write_link_policy(hdev, skb);
		break;

	case HCI_OP_READ_DEF_LINK_POLICY:
		hci_cc_read_def_link_policy(hdev, skb);
		break;

	case HCI_OP_WRITE_DEF_LINK_POLICY:
		hci_cc_write_def_link_policy(hdev, skb);
		break;

	case HCI_OP_RESET:
		hci_cc_reset(hdev, skb);
		break;

	case HCI_OP_READ_STORED_LINK_KEY:
		hci_cc_read_stored_link_key(hdev, skb);
		break;

	case HCI_OP_DELETE_STORED_LINK_KEY:
		hci_cc_delete_stored_link_key(hdev, skb);
		break;

	case HCI_OP_WRITE_LOCAL_NAME:
		hci_cc_write_local_name(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_NAME:
		hci_cc_read_local_name(hdev, skb);
		break;

	case HCI_OP_WRITE_AUTH_ENABLE:
		hci_cc_write_auth_enable(hdev, skb);
		break;

	case HCI_OP_WRITE_ENCRYPT_MODE:
		hci_cc_write_encrypt_mode(hdev, skb);
		break;

	case HCI_OP_WRITE_SCAN_ENABLE:
		hci_cc_write_scan_enable(hdev, skb);
		break;

	case HCI_OP_READ_CLASS_OF_DEV:
		hci_cc_read_class_of_dev(hdev, skb);
		break;

	case HCI_OP_WRITE_CLASS_OF_DEV:
		hci_cc_write_class_of_dev(hdev, skb);
		break;

	case HCI_OP_READ_VOICE_SETTING:
		hci_cc_read_voice_setting(hdev, skb);
		break;

	case HCI_OP_WRITE_VOICE_SETTING:
		hci_cc_write_voice_setting(hdev, skb);
		break;

	case HCI_OP_READ_NUM_SUPPORTED_IAC:
		hci_cc_read_num_supported_iac(hdev, skb);
		break;

	case HCI_OP_WRITE_SSP_MODE:
		hci_cc_write_ssp_mode(hdev, skb);
		break;

	case HCI_OP_WRITE_SC_SUPPORT:
		hci_cc_write_sc_support(hdev, skb);
		break;

	case HCI_OP_READ_AUTH_PAYLOAD_TO:
		hci_cc_read_auth_payload_timeout(hdev, skb);
		break;

	case HCI_OP_WRITE_AUTH_PAYLOAD_TO:
		hci_cc_write_auth_payload_timeout(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_VERSION:
		hci_cc_read_local_version(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_COMMANDS:
		hci_cc_read_local_commands(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_FEATURES:
		hci_cc_read_local_features(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_EXT_FEATURES:
		hci_cc_read_local_ext_features(hdev, skb);
		break;

	case HCI_OP_READ_BUFFER_SIZE:
		hci_cc_read_buffer_size(hdev, skb);
		break;

	case HCI_OP_READ_BD_ADDR:
		hci_cc_read_bd_addr(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_PAIRING_OPTS:
		hci_cc_read_local_pairing_opts(hdev, skb);
		break;

	case HCI_OP_READ_PAGE_SCAN_ACTIVITY:
		hci_cc_read_page_scan_activity(hdev, skb);
		break;

	case HCI_OP_WRITE_PAGE_SCAN_ACTIVITY:
		hci_cc_write_page_scan_activity(hdev, skb);
		break;

	case HCI_OP_READ_PAGE_SCAN_TYPE:
		hci_cc_read_page_scan_type(hdev, skb);
		break;

	case HCI_OP_WRITE_PAGE_SCAN_TYPE:
		hci_cc_write_page_scan_type(hdev, skb);
		break;

	case HCI_OP_READ_DATA_BLOCK_SIZE:
		hci_cc_read_data_block_size(hdev, skb);
		break;

	case HCI_OP_READ_FLOW_CONTROL_MODE:
		hci_cc_read_flow_control_mode(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_AMP_INFO:
		hci_cc_read_local_amp_info(hdev, skb);
		break;

	case HCI_OP_READ_CLOCK:
		hci_cc_read_clock(hdev, skb);
		break;

	case HCI_OP_READ_INQ_RSP_TX_POWER:
		hci_cc_read_inq_rsp_tx_power(hdev, skb);
		break;

	case HCI_OP_READ_DEF_ERR_DATA_REPORTING:
		hci_cc_read_def_err_data_reporting(hdev, skb);
		break;

	case HCI_OP_WRITE_DEF_ERR_DATA_REPORTING:
		hci_cc_write_def_err_data_reporting(hdev, skb);
		break;

	case HCI_OP_PIN_CODE_REPLY:
		hci_cc_pin_code_reply(hdev, skb);
		break;

	case HCI_OP_PIN_CODE_NEG_REPLY:
		hci_cc_pin_code_neg_reply(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_OOB_DATA:
		hci_cc_read_local_oob_data(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_OOB_EXT_DATA:
		hci_cc_read_local_oob_ext_data(hdev, skb);
		break;

	case HCI_OP_LE_READ_BUFFER_SIZE:
		hci_cc_le_read_buffer_size(hdev, skb);
		break;

	case HCI_OP_LE_READ_LOCAL_FEATURES:
		hci_cc_le_read_local_features(hdev, skb);
		break;

	case HCI_OP_LE_READ_ADV_TX_POWER:
		hci_cc_le_read_adv_tx_power(hdev, skb);
		break;

	case HCI_OP_USER_CONFIRM_REPLY:
		hci_cc_user_confirm_reply(hdev, skb);
		break;

	case HCI_OP_USER_CONFIRM_NEG_REPLY:
		hci_cc_user_confirm_neg_reply(hdev, skb);
		break;

	case HCI_OP_USER_PASSKEY_REPLY:
		hci_cc_user_passkey_reply(hdev, skb);
		break;

	case HCI_OP_USER_PASSKEY_NEG_REPLY:
		hci_cc_user_passkey_neg_reply(hdev, skb);
		break;

	case HCI_OP_LE_SET_RANDOM_ADDR:
		hci_cc_le_set_random_addr(hdev, skb);
		break;

	case HCI_OP_LE_SET_ADV_ENABLE:
		hci_cc_le_set_adv_enable(hdev, skb);
		break;

	case HCI_OP_LE_SET_SCAN_PARAM:
		hci_cc_le_set_scan_param(hdev, skb);
		break;

	case HCI_OP_LE_SET_SCAN_ENABLE:
		hci_cc_le_set_scan_enable(hdev, skb);
		break;

	case HCI_OP_LE_READ_WHITE_LIST_SIZE:
		hci_cc_le_read_white_list_size(hdev, skb);
		break;

	case HCI_OP_LE_CLEAR_WHITE_LIST:
		hci_cc_le_clear_white_list(hdev, skb);
		break;

	case HCI_OP_LE_ADD_TO_WHITE_LIST:
		hci_cc_le_add_to_white_list(hdev, skb);
		break;

	case HCI_OP_LE_DEL_FROM_WHITE_LIST:
		hci_cc_le_del_from_white_list(hdev, skb);
		break;

	case HCI_OP_LE_READ_SUPPORTED_STATES:
		hci_cc_le_read_supported_states(hdev, skb);
		break;

	case HCI_OP_LE_READ_DEF_DATA_LEN:
		hci_cc_le_read_def_data_len(hdev, skb);
		break;

	case HCI_OP_LE_WRITE_DEF_DATA_LEN:
		hci_cc_le_write_def_data_len(hdev, skb);
		break;

	case HCI_OP_LE_ADD_TO_RESOLV_LIST:
		hci_cc_le_add_to_resolv_list(hdev, skb);
		break;

	case HCI_OP_LE_DEL_FROM_RESOLV_LIST:
		hci_cc_le_del_from_resolv_list(hdev, skb);
		break;

	case HCI_OP_LE_CLEAR_RESOLV_LIST:
		hci_cc_le_clear_resolv_list(hdev, skb);
		break;

	case HCI_OP_LE_READ_RESOLV_LIST_SIZE:
		hci_cc_le_read_resolv_list_size(hdev, skb);
		break;

	case HCI_OP_LE_SET_ADDR_RESOLV_ENABLE:
		hci_cc_le_set_addr_resolution_enable(hdev, skb);
		break;

	case HCI_OP_LE_READ_MAX_DATA_LEN:
		hci_cc_le_read_max_data_len(hdev, skb);
		break;

	case HCI_OP_WRITE_LE_HOST_SUPPORTED:
		hci_cc_write_le_host_supported(hdev, skb);
		break;

	case HCI_OP_LE_SET_ADV_PARAM:
		hci_cc_set_adv_param(hdev, skb);
		break;

	case HCI_OP_READ_RSSI:
		hci_cc_read_rssi(hdev, skb);
		break;

	case HCI_OP_READ_TX_POWER:
		hci_cc_read_tx_power(hdev, skb);
		break;

	case HCI_OP_WRITE_SSP_DEBUG_MODE:
		hci_cc_write_ssp_debug_mode(hdev, skb);
		break;

	case HCI_OP_LE_SET_EXT_SCAN_PARAMS:
		hci_cc_le_set_ext_scan_param(hdev, skb);
		break;

	case HCI_OP_LE_SET_EXT_SCAN_ENABLE:
		hci_cc_le_set_ext_scan_enable(hdev, skb);
		break;

	case HCI_OP_LE_SET_DEFAULT_PHY:
		hci_cc_le_set_default_phy(hdev, skb);
		break;

	case HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS:
		hci_cc_le_read_num_adv_sets(hdev, skb);
		break;

	case HCI_OP_LE_SET_EXT_ADV_PARAMS:
		hci_cc_set_ext_adv_param(hdev, skb);
		break;

	case HCI_OP_LE_SET_EXT_ADV_ENABLE:
		hci_cc_le_set_ext_adv_enable(hdev, skb);
		break;

	case HCI_OP_LE_SET_ADV_SET_RAND_ADDR:
		hci_cc_le_set_adv_set_random_addr(hdev, skb);
		break;

	default:
		BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
		break;
	}

	if (*opcode != HCI_OP_NOP)
		cancel_delayed_work(&hdev->cmd_timer);

	if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
		atomic_set(&hdev->cmd_cnt, 1);

	hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
			     req_complete_skb);

	if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
		bt_dev_err(hdev,
			   "unexpected event for opcode 0x%4.4x", *opcode);
		return;
	}

	if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
		queue_work(hdev->workqueue, &hdev->cmd_work);
}


static void hci_cc_le_del_from_white_list(struct hci_dev *hdev,
					  struct sk_buff *skb)
{
	struct hci_cp_le_del_from_white_list *sent;
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST);
	if (!sent)
		return;

	hci_bdaddr_list_del(&hdev->le_white_list, &sent->bdaddr,
			    sent->bdaddr_type);
}


static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	bdaddr_t *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
	if (!sent)
		return;

	hci_dev_lock(hdev);

	bacpy(&hdev->random_addr, sent);

	hci_dev_unlock(hdev);
}


static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	struct discovery_state *discov = &hdev->discovery;
	struct inquiry_entry *e;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	hci_conn_check_pending(hdev);

	if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
		return;

	smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
	wake_up_bit(&hdev->flags, HCI_INQUIRY);

	if (!hci_dev_test_flag(hdev, HCI_MGMT))
		return;

	hci_dev_lock(hdev);

	if (discov->state != DISCOVERY_FINDING)
		goto unlock;

	if (list_empty(&discov->resolve)) {
		/* When BR/EDR inquiry is active and no LE scanning is in
		 * progress, then change discovery state to indicate completion.
		 *
		 * When running LE scanning and BR/EDR inquiry simultaneously
		 * and the LE scan already finished, then change the discovery
		 * state to indicate completion.
		 */
		if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
		    !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
			hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
		goto unlock;
	}

	e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
	if (e && hci_resolve_name(hdev, e) == 0) {
		e->name_state = NAME_PENDING;
		hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
	} else {
		/* When BR/EDR inquiry is active and no LE scanning is in
		 * progress, then change discovery state to indicate completion.
		 *
		 * When running LE scanning and BR/EDR inquiry simultaneously
		 * and the LE scan already finished, then change the discovery
		 * state to indicate completion.
		 */
		if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
		    !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
			hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
	}

unlock:
	hci_dev_unlock(hdev);
}


static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_num_comp_pkts *ev = (void *) skb->data;
	int i;

	if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
		bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
		return;
	}

	if (skb->len < sizeof(*ev) ||
	    skb->len < struct_size(ev, handles, ev->num_hndl)) {
		BT_DBG("%s bad parameters", hdev->name);
		return;
	}

	BT_DBG("%s num_hndl %d", hdev->name, ev->num_hndl);

	for (i = 0; i < ev->num_hndl; i++) {
		struct hci_comp_pkts_info *info = &ev->handles[i];
		struct hci_conn *conn;
		__u16  handle, count;

		handle = __le16_to_cpu(info->handle);
		count  = __le16_to_cpu(info->count);

		conn = hci_conn_hash_lookup_handle(hdev, handle);
		if (!conn)
			continue;

		conn->sent -= count;

		switch (conn->type) {
		case ACL_LINK:
			hdev->acl_cnt += count;
			if (hdev->acl_cnt > hdev->acl_pkts)
				hdev->acl_cnt = hdev->acl_pkts;
			break;

		case LE_LINK:
			if (hdev->le_pkts) {
				hdev->le_cnt += count;
				if (hdev->le_cnt > hdev->le_pkts)
					hdev->le_cnt = hdev->le_pkts;
			} else {
				hdev->acl_cnt += count;
				if (hdev->acl_cnt > hdev->acl_pkts)
					hdev->acl_cnt = hdev->acl_pkts;
			}
			break;

		case SCO_LINK:
			hdev->sco_cnt += count;
			if (hdev->sco_cnt > hdev->sco_pkts)
				hdev->sco_cnt = hdev->sco_pkts;
			break;

		default:
			bt_dev_err(hdev, "unknown type %d conn %p",
				   conn->type, conn);
			break;
		}
	}

	queue_work(hdev->workqueue, &hdev->tx_work);
}


static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 *sent, status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
	if (!sent)
		return;

	hci_dev_lock(hdev);

	/* If we're doing connection initiation as peripheral. Set a
	 * timeout in case something goes wrong.
	 */
	if (*sent) {
		struct hci_conn *conn;

		hci_dev_set_flag(hdev, HCI_LE_ADV);

		conn = hci_lookup_le_connect(hdev);
		if (conn)
			queue_delayed_work(hdev->workqueue,
					   &conn->le_conn_timeout,
					   conn->conn_timeout);
	} else {
		hci_dev_clear_flag(hdev, HCI_LE_ADV);
	}

	hci_dev_unlock(hdev);
}


static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
{
	struct hci_cp_le_read_remote_features *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (conn) {
		if (conn->state == BT_CONFIG) {
			hci_connect_cfm(conn, status);
			hci_conn_drop(conn);
		}
	}

	hci_dev_unlock(hdev);
}


static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
{
	struct hci_cp_le_create_conn *cp;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	/* All connection failure handling is taken care of by the
	 * hci_le_conn_failed function which is triggered by the HCI
	 * request completion callbacks used for connecting.
	 */
	if (status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
			  cp->own_address_type, cp->filter_policy);

	hci_dev_unlock(hdev);
}


static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
{
	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status) {
		hci_conn_check_pending(hdev);
		return;
	}

	set_bit(HCI_INQUIRY, &hdev->flags);
}


static void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_io_capa_request *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s", hdev->name);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (!conn)
		goto unlock;

	hci_conn_hold(conn);

	if (!hci_dev_test_flag(hdev, HCI_MGMT))
		goto unlock;

	/* Allow pairing if we're pairable, the initiators of the
	 * pairing or if the remote is not requesting bonding.
	 */
	if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
	    test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
	    (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
		struct hci_cp_io_capability_reply cp;

		bacpy(&cp.bdaddr, &ev->bdaddr);
		/* Change the IO capability from KeyboardDisplay
		 * to DisplayYesNo as it is not supported by BT spec. */
		cp.capability = (conn->io_capability == 0x04) ?
				HCI_IO_DISPLAY_YESNO : conn->io_capability;

		/* If we are initiators, there is no remote information yet */
		if (conn->remote_auth == 0xff) {
			/* Request MITM protection if our IO caps allow it
			 * except for the no-bonding case.
			 */
			if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
			    conn->auth_type != HCI_AT_NO_BONDING)
				conn->auth_type |= 0x01;
		} else {
			conn->auth_type = hci_get_auth_req(conn);
		}

		/* If we're not bondable, force one of the non-bondable
		 * authentication requirement values.
		 */
		if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
			conn->auth_type &= HCI_AT_NO_BONDING_MITM;

		cp.authentication = conn->auth_type;
		cp.oob_data = bredr_oob_data_present(conn);

		hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
			     sizeof(cp), &cp);
	} else {
		struct hci_cp_io_capability_neg_reply cp;

		bacpy(&cp.bdaddr, &ev->bdaddr);
		cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;

		hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
			     sizeof(cp), &cp);
	}

unlock:
	hci_dev_unlock(hdev);
}


static void hci_cc_read_local_ext_features(struct hci_dev *hdev,
					   struct sk_buff *skb)
{
	struct hci_rp_read_local_ext_features *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	if (hdev->max_page < rp->max_page)
		hdev->max_page = rp->max_page;

	if (rp->page < HCI_MAX_PAGES)
		memcpy(hdev->features[rp->page], rp->features, 8);
}


static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_read_remote_features *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (conn) {
		if (conn->state == BT_CONFIG) {
			hci_connect_cfm(conn, status);
			hci_conn_drop(conn);
		}
	}

	hci_dev_unlock(hdev);
}


static void hci_cc_read_num_supported_iac(struct hci_dev *hdev,
					  struct sk_buff *skb)
{
	struct hci_rp_read_num_supported_iac *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hdev->num_iac = rp->num_iac;

	BT_DBG("%s num iac %d", hdev->name, hdev->num_iac);
}


static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_remote_name_req *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	/* If successful wait for the name req complete event before
	 * checking for the need to do authentication */
	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);

	if (hci_dev_test_flag(hdev, HCI_MGMT))
		hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);

	if (!conn)
		goto unlock;

	if (!hci_outgoing_auth_needed(hdev, conn))
		goto unlock;

	if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
		struct hci_cp_auth_requested auth_cp;

		set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);

		auth_cp.handle = __cpu_to_le16(conn->handle);
		hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
			     sizeof(auth_cp), &auth_cp);
	}

unlock:
	hci_dev_unlock(hdev);
}


static void hci_remote_ext_features_evt(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_ev_remote_ext_features *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s", hdev->name);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
	if (!conn)
		goto unlock;

	if (ev->page < HCI_MAX_PAGES)
		memcpy(conn->features[ev->page], ev->features, 8);

	if (!ev->status && ev->page == 0x01) {
		struct inquiry_entry *ie;

		ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
		if (ie)
			ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);

		if (ev->features[0] & LMP_HOST_SSP) {
			set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
		} else {
			/* It is mandatory by the Bluetooth specification that
			 * Extended Inquiry Results are only used when Secure
			 * Simple Pairing is enabled, but some devices violate
			 * this.
			 *
			 * To make these devices work, the internal SSP
			 * enabled flag needs to be cleared if the remote host
			 * features do not indicate SSP support */
			clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
		}

		if (ev->features[0] & LMP_HOST_SC)
			set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
	}

	if (conn->state != BT_CONFIG)
		goto unlock;

	if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
		struct hci_cp_remote_name_req cp;
		memset(&cp, 0, sizeof(cp));
		bacpy(&cp.bdaddr, &conn->dst);
		cp.pscan_rep_mode = 0x02;
		hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
	} else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
		mgmt_device_connected(hdev, conn, 0, NULL, 0);

	if (!hci_outgoing_auth_needed(hdev, conn)) {
		conn->state = BT_CONNECTED;
		hci_connect_cfm(conn, ev->status);
		hci_conn_drop(conn);
	}

unlock:
	hci_dev_unlock(hdev);
}


static void hci_cc_read_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_link_policy *rp = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
	if (conn)
		conn->link_policy = __le16_to_cpu(rp->policy);

	hci_dev_unlock(hdev);
}


static void hci_cc_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
}


static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	struct hci_cp_write_ssp_mode *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
	if (!sent)
		return;

	hci_dev_lock(hdev);

	if (!status) {
		if (sent->mode)
			hdev->features[1][0] |= LMP_HOST_SSP;
		else
			hdev->features[1][0] &= ~LMP_HOST_SSP;
	}

	if (hci_dev_test_flag(hdev, HCI_MGMT))
		mgmt_ssp_enable_complete(hdev, sent->mode, status);
	else if (!status) {
		if (sent->mode)
			hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
		else
			hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
	}

	hci_dev_unlock(hdev);
}


static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_conn_request *ev = (void *) skb->data;
	int mask = hdev->link_mode;
	struct inquiry_entry *ie;
	struct hci_conn *conn;
	__u8 flags = 0;

	BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr,
	       ev->link_type);

	mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
				      &flags);

	if (!(mask & HCI_LM_ACCEPT)) {
		hci_reject_conn(hdev, &ev->bdaddr);
		return;
	}

	if (hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
				   BDADDR_BREDR)) {
		hci_reject_conn(hdev, &ev->bdaddr);
		return;
	}

	/* Require HCI_CONNECTABLE or a whitelist entry to accept the
	 * connection. These features are only touched through mgmt so
	 * only do the checks if HCI_MGMT is set.
	 */
	if (hci_dev_test_flag(hdev, HCI_MGMT) &&
	    !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
	    !hci_bdaddr_list_lookup_with_flags(&hdev->whitelist, &ev->bdaddr,
					       BDADDR_BREDR)) {
		hci_reject_conn(hdev, &ev->bdaddr);
		return;
	}

	/* Connection accepted */

	hci_dev_lock(hdev);

	ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
	if (ie)
		memcpy(ie->data.dev_class, ev->dev_class, 3);

	conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
			&ev->bdaddr);
	if (!conn) {
		conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
				    HCI_ROLE_SLAVE);
		if (!conn) {
			bt_dev_err(hdev, "no memory for new connection");
			hci_dev_unlock(hdev);
			return;
		}
	}

	memcpy(conn->dev_class, ev->dev_class, 3);

	hci_dev_unlock(hdev);

	if (ev->link_type == ACL_LINK ||
	    (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
		struct hci_cp_accept_conn_req cp;
		conn->state = BT_CONNECT;

		bacpy(&cp.bdaddr, &ev->bdaddr);

		if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
			cp.role = 0x00; /* Become master */
		else
			cp.role = 0x01; /* Remain slave */

		hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
	} else if (!(flags & HCI_PROTO_DEFER)) {
		struct hci_cp_accept_sync_conn_req cp;
		conn->state = BT_CONNECT;

		bacpy(&cp.bdaddr, &ev->bdaddr);
		cp.pkt_type = cpu_to_le16(conn->pkt_type);

		cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
		cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
		cp.max_latency    = cpu_to_le16(0xffff);
		cp.content_format = cpu_to_le16(hdev->voice_setting);
		cp.retrans_effort = 0xff;

		hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
			     &cp);
	} else {
		conn->state = BT_CONNECT2;
		hci_connect_cfm(conn, 0);
	}
}


static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_pin_code_neg_reply *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	hci_dev_lock(hdev);

	if (hci_dev_test_flag(hdev, HCI_MGMT))
		mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
						 rp->status);

	hci_dev_unlock(hdev);
}


static void hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_cp_le_set_ext_adv_enable *cp;
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	if (cp->enable) {
		struct hci_conn *conn;

		hci_dev_set_flag(hdev, HCI_LE_ADV);

		conn = hci_lookup_le_connect(hdev);
		if (conn)
			queue_delayed_work(hdev->workqueue,
					   &conn->le_conn_timeout,
					   conn->conn_timeout);
	} else {
		hci_dev_clear_flag(hdev, HCI_LE_ADV);
	}

	hci_dev_unlock(hdev);
}


static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_auth_complete *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
	if (!conn)
		goto unlock;

	if (!ev->status) {
		clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);

		if (!hci_conn_ssp_enabled(conn) &&
		    test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
			bt_dev_info(hdev, "re-auth of legacy device is not possible.");
		} else {
			set_bit(HCI_CONN_AUTH, &conn->flags);
			conn->sec_level = conn->pending_sec_level;
		}
	} else {
		if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
			set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);

		mgmt_auth_failed(conn, ev->status);
	}

	clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
	clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);

	if (conn->state == BT_CONFIG) {
		if (!ev->status && hci_conn_ssp_enabled(conn)) {
			struct hci_cp_set_conn_encrypt cp;
			cp.handle  = ev->handle;
			cp.encrypt = 0x01;
			hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
				     &cp);
		} else {
			conn->state = BT_CONNECTED;
			hci_connect_cfm(conn, ev->status);
			hci_conn_drop(conn);
		}
	} else {
		hci_auth_cfm(conn, ev->status);

		hci_conn_hold(conn);
		conn->disc_timeout = HCI_DISCONN_TIMEOUT;
		hci_conn_drop(conn);
	}

	if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
		if (!ev->status) {
			struct hci_cp_set_conn_encrypt cp;
			cp.handle  = ev->handle;
			cp.encrypt = 0x01;
			hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
				     &cp);
		} else {
			clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
			hci_encrypt_cfm(conn, ev->status);
		}
	}

unlock:
	hci_dev_unlock(hdev);
}


static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb)
{
	u8 status = *((u8 *) skb->data);
	struct hci_cp_write_sc_support *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
	if (!sent)
		return;

	hci_dev_lock(hdev);

	if (!status) {
		if (sent->support)
			hdev->features[1][0] |= LMP_HOST_SC;
		else
			hdev->features[1][0] &= ~LMP_HOST_SC;
	}

	if (!hci_dev_test_flag(hdev, HCI_MGMT) && !status) {
		if (sent->support)
			hci_dev_set_flag(hdev, HCI_SC_ENABLED);
		else
			hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
	}

	hci_dev_unlock(hdev);
}


static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_conn_complete *ev = (void *) skb->data;
	struct inquiry_entry *ie;
	struct hci_conn *conn;

	BT_DBG("%s", hdev->name);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
	if (!conn) {
		/* Connection may not exist if auto-connected. Check the inquiry
		 * cache to see if we've already discovered this bdaddr before.
		 * If found and link is an ACL type, create a connection class
		 * automatically.
		 */
		ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
		if (ie && ev->link_type == ACL_LINK) {
			conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
					    HCI_ROLE_SLAVE);
			if (!conn) {
				bt_dev_err(hdev, "no memory for new conn");
				goto unlock;
			}
		} else {
			if (ev->link_type != SCO_LINK)
				goto unlock;

			conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
						       &ev->bdaddr);
			if (!conn)
				goto unlock;

			conn->type = SCO_LINK;
		}
	}

	if (!ev->status) {
		conn->handle = __le16_to_cpu(ev->handle);

		if (conn->type == ACL_LINK) {
			conn->state = BT_CONFIG;
			hci_conn_hold(conn);

			if (!conn->out && !hci_conn_ssp_enabled(conn) &&
			    !hci_find_link_key(hdev, &ev->bdaddr))
				conn->disc_timeout = HCI_PAIRING_TIMEOUT;
			else
				conn->disc_timeout = HCI_DISCONN_TIMEOUT;
		} else
			conn->state = BT_CONNECTED;

		hci_debugfs_create_conn(conn);
		hci_conn_add_sysfs(conn);

		if (test_bit(HCI_AUTH, &hdev->flags))
			set_bit(HCI_CONN_AUTH, &conn->flags);

		if (test_bit(HCI_ENCRYPT, &hdev->flags))
			set_bit(HCI_CONN_ENCRYPT, &conn->flags);

		/* Get remote features */
		if (conn->type == ACL_LINK) {
			struct hci_cp_read_remote_features cp;
			cp.handle = ev->handle;
			hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
				     sizeof(cp), &cp);

			hci_req_update_scan(hdev);
		}

		/* Set packet type for incoming connection */
		if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
			struct hci_cp_change_conn_ptype cp;
			cp.handle = ev->handle;
			cp.pkt_type = cpu_to_le16(conn->pkt_type);
			hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
				     &cp);
		}
	} else {
		conn->state = BT_CLOSED;
		if (conn->type == ACL_LINK)
			mgmt_connect_failed(hdev, &conn->dst, conn->type,
					    conn->dst_type, ev->status);
	}

	if (conn->type == ACL_LINK)
		hci_sco_setup(conn, ev->status);

	if (ev->status) {
		hci_connect_cfm(conn, ev->status);
		hci_conn_del(conn);
	} else if (ev->link_type == SCO_LINK) {
		switch (conn->setting & SCO_AIRMODE_MASK) {
		case SCO_AIRMODE_CVSD:
			if (hdev->notify)
				hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
			break;
		}

		hci_connect_cfm(conn, ev->status);
	}

unlock:
	hci_dev_unlock(hdev);

	hci_conn_check_pending(hdev);
}


static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	void *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
	if (!sent)
		return;

	hci_dev_lock(hdev);

	if (hci_dev_test_flag(hdev, HCI_MGMT))
		mgmt_set_local_name_complete(hdev, sent, status);
	else if (!status)
		memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);

	hci_dev_unlock(hdev);
}


static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_local_name *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
	    hci_dev_test_flag(hdev, HCI_CONFIG))
		memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
}


static void hci_cc_le_write_def_data_len(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_cp_le_write_def_data_len *sent;
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
	if (!sent)
		return;

	hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
	hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
}


static int wbinvd_interception(struct vcpu_svm *svm)
{
	return kvm_emulate_wbinvd(&svm->vcpu);
}

KVM: SVM: Fix potential memory leak in svm_cpu_init()

When kmalloc memory for sd->sev_vmcbs failed, we forget to free the page
held by sd->save_area. Also get rid of the var r as '-ENOMEM' is actually
the only possible outcome here.

Reviewed-by: Liran Alon <liran.alon@oracle.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>


static void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
{
	struct vcpu_svm *svm = to_svm(vcpu);

#ifdef CONFIG_X86_64
	if (vcpu->arch.efer & EFER_LME) {
		if (!is_paging(vcpu) && (cr0 & X86_CR0_PG)) {
			vcpu->arch.efer |= EFER_LMA;
			svm->vmcb->save.efer |= EFER_LMA | EFER_LME;
		}

		if (is_paging(vcpu) && !(cr0 & X86_CR0_PG)) {
			vcpu->arch.efer &= ~EFER_LMA;
			svm->vmcb->save.efer &= ~(EFER_LMA | EFER_LME);
		}
	}
#endif
	vcpu->arch.cr0 = cr0;

	if (!npt_enabled)
		cr0 |= X86_CR0_PG | X86_CR0_WP;

	/*
	 * re-enable caching here because the QEMU bios
	 * does not do it - this results in some delay at
	 * reboot
	 */
	if (kvm_check_has_quirk(vcpu->kvm, KVM_X86_QUIRK_CD_NW_CLEARED))
		cr0 &= ~(X86_CR0_CD | X86_CR0_NW);
	svm->vmcb->save.cr0 = cr0;
	mark_dirty(svm->vmcb, VMCB_CR);
	update_cr0_intercept(svm);
}


static int monitor_interception(struct vcpu_svm *svm)
{
	printk_once(KERN_WARNING "kvm: MONITOR instruction emulated as NOP!\n");
	return nop_interception(svm);
}


static void svm_prepare_guest_switch(struct kvm_vcpu *vcpu)
{
}


static int rdpmc_interception(struct vcpu_svm *svm)
{
	int err;

	if (!nrips)
		return emulate_on_interception(svm);

	err = kvm_rdpmc(&svm->vcpu);
	return kvm_complete_insn_gp(&svm->vcpu, err);
}


static int sev_bind_asid(struct kvm *kvm, unsigned int handle, int *error)
{
	struct sev_data_activate *data;
	int asid = sev_get_asid(kvm);
	int ret;

	data = kzalloc(sizeof(*data), GFP_KERNEL_ACCOUNT);
	if (!data)
		return -ENOMEM;

	/* activate ASID on the given handle */
	data->handle = handle;
	data->asid   = asid;
	ret = sev_guest_activate(data, error);
	kfree(data);

	return ret;
}


static struct kvm *svm_vm_alloc(void)
{
	struct kvm_svm *kvm_svm = __vmalloc(sizeof(struct kvm_svm),
					    GFP_KERNEL_ACCOUNT | __GFP_ZERO,
					    PAGE_KERNEL);
	return &kvm_svm->kvm;
}


static void avic_handle_dfr_update(struct kvm_vcpu *vcpu)
{
	struct vcpu_svm *svm = to_svm(vcpu);
	u32 dfr = kvm_lapic_get_reg(vcpu->arch.apic, APIC_DFR);

	if (svm->dfr_reg == dfr)
		return;

	avic_invalidate_logical_id_entry(vcpu);
	svm->dfr_reg = dfr;
}


static int svm_register_enc_region(struct kvm *kvm,
				   struct kvm_enc_region *range)
{
	struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info;
	struct enc_region *region;
	int ret = 0;

	if (!sev_guest(kvm))
		return -ENOTTY;

	if (range->addr > ULONG_MAX || range->size > ULONG_MAX)
		return -EINVAL;

	region = kzalloc(sizeof(*region), GFP_KERNEL_ACCOUNT);
	if (!region)
		return -ENOMEM;

	region->pages = sev_pin_memory(kvm, range->addr, range->size, &region->npages, 1);
	if (!region->pages) {
		ret = -ENOMEM;
		goto e_free;
	}

	/*
	 * The guest may change the memory encryption attribute from C=0 -> C=1
	 * or vice versa for this memory range. Lets make sure caches are
	 * flushed to ensure that guest data gets written into memory with
	 * correct C-bit.
	 */
	sev_clflush_pages(region->pages, region->npages);

	region->uaddr = range->addr;
	region->size = range->size;

	mutex_lock(&kvm->lock);
	list_add_tail(&region->list, &sev->regions_list);
	mutex_unlock(&kvm->lock);

	return ret;

e_free:
	kfree(region);
	return ret;
}


static int gp_interception(struct vcpu_svm *svm)
{
	struct kvm_vcpu *vcpu = &svm->vcpu;
	u32 error_code = svm->vmcb->control.exit_info_1;

	WARN_ON_ONCE(!enable_vmware_backdoor);

	/*
	 * VMware backdoor emulation on #GP interception only handles IN{S},
	 * OUT{S}, and RDPMC, none of which generate a non-zero error code.
	 */
	if (error_code) {
		kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
		return 1;
	}
	return kvm_emulate_instruction(vcpu, EMULTYPE_VMWARE_GP);
}


static int svm_create_vcpu(struct kvm_vcpu *vcpu)
{
	struct vcpu_svm *svm;
	struct page *page;
	struct page *msrpm_pages;
	struct page *hsave_page;
	struct page *nested_msrpm_pages;
	int err;

	BUILD_BUG_ON(offsetof(struct vcpu_svm, vcpu) != 0);
	svm = to_svm(vcpu);

	err = -ENOMEM;
	page = alloc_page(GFP_KERNEL_ACCOUNT);
	if (!page)
		goto out;

	msrpm_pages = alloc_pages(GFP_KERNEL_ACCOUNT, MSRPM_ALLOC_ORDER);
	if (!msrpm_pages)
		goto free_page1;

	nested_msrpm_pages = alloc_pages(GFP_KERNEL_ACCOUNT, MSRPM_ALLOC_ORDER);
	if (!nested_msrpm_pages)
		goto free_page2;

	hsave_page = alloc_page(GFP_KERNEL_ACCOUNT);
	if (!hsave_page)
		goto free_page3;

	err = avic_init_vcpu(svm);
	if (err)
		goto free_page4;

	/* We initialize this flag to true to make sure that the is_running
	 * bit would be set the first time the vcpu is loaded.
	 */
	if (irqchip_in_kernel(vcpu->kvm) && kvm_apicv_activated(vcpu->kvm))
		svm->avic_is_running = true;

	svm->nested.hsave = page_address(hsave_page);

	svm->msrpm = page_address(msrpm_pages);
	svm_vcpu_init_msrpm(svm->msrpm);

	svm->nested.msrpm = page_address(nested_msrpm_pages);
	svm_vcpu_init_msrpm(svm->nested.msrpm);

	svm->vmcb = page_address(page);
	clear_page(svm->vmcb);
	svm->vmcb_pa = __sme_set(page_to_pfn(page) << PAGE_SHIFT);
	svm->asid_generation = 0;
	init_vmcb(svm);

	svm_init_osvw(vcpu);
	vcpu->arch.microcode_version = 0x01000065;

	return 0;

free_page4:
	__free_page(hsave_page);
free_page3:
	__free_pages(nested_msrpm_pages, MSRPM_ALLOC_ORDER);
free_page2:
	__free_pages(msrpm_pages, MSRPM_ALLOC_ORDER);
free_page1:
	__free_page(page);
out:
	return err;
}