Commit df935429 authored by Marcel Holtmann's avatar Marcel Holtmann
Browse files

Bluetooth: Send HCI_Read_Clock_Offset before disconnecting 



When the connection is in master role and it is going to be
disconnected based on the disconnection timeout, then send
the HCI_Read_Clock_Offset command in an attempt to update the
clock offset value in the inquiry cache.

Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
parent 40051e46

include/net/bluetooth/hci.h

+5 −0
Original line number Diff line number Diff line
@@ -533,6 +533,11 @@ struct hci_cp_read_remote_version { 
	__le16   handle;

} __packed;



#define HCI_OP_READ_CLOCK_OFFSET	0x041f

struct hci_cp_read_clock_offset {

	__le16   handle;

} __packed;



#define HCI_OP_SETUP_SYNC_CONN		0x0428

struct hci_cp_setup_sync_conn {

	__le16   handle;

net/bluetooth/hci_conn.c

+19 −0
Original line number Diff line number Diff line
@@ -309,6 +309,25 @@ static void hci_conn_timeout(struct work_struct *work) 
			hci_amp_disconn(conn);

		} else {

			__u8 reason = hci_proto_disconn_ind(conn);



			/* When we are master of an established connection

			 * and it enters the disconnect timeout, then go

			 * ahead and try to read the current clock offset.

			 *

			 * Processing of the result is done within the

			 * event handling and hci_clock_offset_evt function.

			 */

			if (conn->type == ACL_LINK &&

			    test_bit(HCI_CONN_MASTER, &conn->flags)) {

				struct hci_dev *hdev = conn->hdev;

				struct hci_cp_read_clock_offset cp;



				cp.handle = cpu_to_le16(conn->handle);



				hci_send_cmd(hdev, HCI_OP_READ_CLOCK_OFFSET,

					     sizeof(cp), &cp);

			}



			hci_disconnect(conn, reason);

		}

		break;