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/*
* 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::hardware::automotive::can::V1_0::implementation {
CanBusNative::CanBusNative(const std::string& ifname, uint32_t bitrate)
: CanBus(ifname), mBitrate(bitrate) {}
ICanController::Result CanBusNative::preUp() {
if (!netdevice::exists(mIfname)) {
LOG(ERROR) << "Interface " << mIfname << " doesn't exist";
return ICanController::Result::BAD_INTERFACE_ID;
}
if (mBitrate == 0) {
// interface is already up and we just want to register it
return ICanController::Result::OK;
}
if (!netdevice::down(mIfname)) {
LOG(ERROR) << "Can't bring " << mIfname << " down (to configure it)";
return ICanController::Result::UNKNOWN_ERROR;
}
if (!netdevice::can::setBitrate(mIfname, mBitrate)) {
LOG(ERROR) << "Can't set bitrate " << mBitrate << " for " << mIfname;
return ICanController::Result::BAD_BITRATE;
}
return ICanController::Result::OK;
}
} // namespace android::hardware::automotive::can::V1_0::implementation
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