diff options
| author | Archie Pusaka <apusaka@chromium.org> | 2023-02-03 17:39:36 +0800 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2023-02-09 14:19:45 -0800 |
| commit | 5cd39700de9b699ef2f333ba3c405e51afbf0eb0 (patch) | |
| tree | fe21119e6100558e8da0604c6f5c045245b7edae /net/bluetooth/hci_conn.c | |
| parent | 0f00cd322d22d4441de51aa80bcce5bb6a8cbb44 (diff) | |
Bluetooth: Make sure LE create conn cancel is sent when timeout
When sending LE create conn command, we set a timer with a duration of
HCI_LE_CONN_TIMEOUT before timing out and calling
create_le_conn_complete. Additionally, when receiving the command
complete, we also set a timer with the same duration to call
le_conn_timeout.
Usually the latter will be triggered first, which then sends a LE
create conn cancel command. However, due to the nature of racing, it
is possible for the former to be called first, thereby calling the
chain hci_conn_failed -> hci_conn_del -> cancel_delayed_work, thereby
preventing LE create conn cancel to be sent. In this situation, the
controller will be stuck in trying the LE connection.
This patch flushes le_conn_timeout on create_le_conn_complete to make
sure we always send LE create connection cancel, if necessary.
Signed-off-by: Archie Pusaka <apusaka@chromium.org>
Reviewed-by: Ying Hsu <yinghsu@chromium.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'net/bluetooth/hci_conn.c')
| -rw-r--r-- | net/bluetooth/hci_conn.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index 838f51c272a6..17b946f9ba31 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -1250,6 +1250,8 @@ static void create_le_conn_complete(struct hci_dev *hdev, void *data, int err) if (conn != hci_lookup_le_connect(hdev)) goto done; + /* Flush to make sure we send create conn cancel command if needed */ + flush_delayed_work(&conn->le_conn_timeout); hci_conn_failed(conn, bt_status(err)); done: |