Commit df935429 authored by Marcel Holtmann's avatar Marcel Holtmann

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
...@@ -533,6 +533,11 @@ struct hci_cp_read_remote_version { ...@@ -533,6 +533,11 @@ struct hci_cp_read_remote_version {
__le16 handle; __le16 handle;
} __packed; } __packed;
#define HCI_OP_READ_CLOCK_OFFSET 0x041f
struct hci_cp_read_clock_offset {
__le16 handle;
} __packed;
#define HCI_OP_SETUP_SYNC_CONN 0x0428 #define HCI_OP_SETUP_SYNC_CONN 0x0428
struct hci_cp_setup_sync_conn { struct hci_cp_setup_sync_conn {
__le16 handle; __le16 handle;
......
...@@ -309,6 +309,25 @@ static void hci_conn_timeout(struct work_struct *work) ...@@ -309,6 +309,25 @@ static void hci_conn_timeout(struct work_struct *work)
hci_amp_disconn(conn); hci_amp_disconn(conn);
} else { } else {
__u8 reason = hci_proto_disconn_ind(conn); __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); hci_disconnect(conn, reason);
} }
break; break;
......
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