Bluetooth: Perform Class of Device changes through hdev->req_workqueue

The Class of Device needs to be changed e.g. for limited discoverable
mode. In preparation of moving the discoverable mode to hci_request.c
and hdev->req_workqueue, move the Class of Device helpers there first.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 40 insertions, 0 deletions

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 167c90644b4b..e5e827b762b9 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -1311,6 +1311,46 @@ static void connectable_update_work(struct work_struct *work)
 	mgmt_set_connectable_complete(hdev, status);
 }
 
+static u8 get_service_classes(struct hci_dev *hdev)
+{
+	struct bt_uuid *uuid;
+	u8 val = 0;
+
+	list_for_each_entry(uuid, &hdev->uuids, list)
+		val |= uuid->svc_hint;
+
+	return val;
+}
+
+void __hci_req_update_class(struct hci_request *req)
+{
+	struct hci_dev *hdev = req->hdev;
+	u8 cod[3];
+
+	BT_DBG("%s", hdev->name);
+
+	if (!hdev_is_powered(hdev))
+		return;
+
+	if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
+		return;
+
+	if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
+		return;
+
+	cod[0] = hdev->minor_class;
+	cod[1] = hdev->major_class;
+	cod[2] = get_service_classes(hdev);
+
+	if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
+		cod[1] |= 0x20;
+
+	if (memcmp(cod, hdev->dev_class, 3) == 0)
+		return;
+
+	hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod);
+}
+
 void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn,
 		      u8 reason)
 {