bluetooth: Add support for linux bluetooth raw hci sockets
The implementation is imported from
packages/modules/Bluetooth/system/vendor_libs/linux/interface
with modifications to modernize the code.
The default bluetooth HAL implementation now jointly uses
the serial implementation and the bluetooth socket
implementation.
Bug: 205758693
Test: VtsHalBluetoothTargetTest
Change-Id: I791fd406e56a0144e1117cb6f8e27ec71b48a192
diff --git a/bluetooth/aidl/default/net_bluetooth_mgmt.h b/bluetooth/aidl/default/net_bluetooth_mgmt.h
new file mode 100644
index 0000000..5c473f2
--- /dev/null
+++ b/bluetooth/aidl/default/net_bluetooth_mgmt.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <unistd.h>
+
+namespace aidl::android::hardware::bluetooth::impl {
+
+class NetBluetoothMgmt {
+ public:
+ NetBluetoothMgmt() {}
+ ~NetBluetoothMgmt() {
+ ::close(rfkill_fd_);
+ ::close(bt_fd_);
+ }
+
+ int openHci(int hci_interface = 0);
+ void closeHci();
+
+ private:
+ int waitHciDev(int hci_interface);
+ int openRfkill();
+ int rfkill(int block);
+
+ // Index of the first rfkill device of type bluetooth.
+ int rfkill_bt_index_{-1};
+ // File descriptor opened to /dev/rfkill.
+ int rfkill_fd_{-1};
+ // File descriptor opened to the bluetooth user channel.
+ int bt_fd_{-1};
+};
+
+} // namespace aidl::android::hardware::bluetooth::impl