Default implementation for CAN bus HAL
This implementation supports SocketCAN interfaces.
Bug: 135918744
Test: VTS (separate new change)
Change-Id: I12b93e37fa64e341bee2c64eaf130b39977fcef5
diff --git a/automotive/can/1.0/default/CanBusNative.cpp b/automotive/can/1.0/default/CanBusNative.cpp
new file mode 100644
index 0000000..365b749
--- /dev/null
+++ b/automotive/can/1.0/default/CanBusNative.cpp
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2019 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.
+ */
+
+#include "CanBusNative.h"
+
+#include <android-base/logging.h>
+#include <libnetdevice/can.h>
+#include <libnetdevice/libnetdevice.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+CanBusNative::CanBusNative(const std::string& ifname, uint32_t baudrate)
+ : CanBus(ifname), mBaudrate(baudrate) {}
+
+ICanController::Result CanBusNative::preUp() {
+ if (!netdevice::exists(mIfname)) {
+ LOG(ERROR) << "Interface " << mIfname << " doesn't exist";
+ return ICanController::Result::BAD_ADDRESS;
+ }
+
+ if (!netdevice::down(mIfname)) {
+ LOG(ERROR) << "Can't bring " << mIfname << " down (to configure it)";
+ return ICanController::Result::UNKNOWN_ERROR;
+ }
+
+ if (!netdevice::can::setBitrate(mIfname, mBaudrate)) {
+ LOG(ERROR) << "Can't set bitrate " << mBaudrate << " for " << mIfname;
+ return ICanController::Result::BAD_BAUDRATE;
+ }
+
+ return ICanController::Result::OK;
+}
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace can
+} // namespace automotive
+} // namespace hardware
+} // namespace android