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53 lines
1.7 KiB
53 lines
1.7 KiB
7 months ago
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/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "CanBusNative.h"
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#include <android-base/logging.h>
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#include <libnetdevice/can.h>
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#include <libnetdevice/libnetdevice.h>
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namespace android::hardware::automotive::can::V1_0::implementation {
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CanBusNative::CanBusNative(const std::string& ifname, uint32_t bitrate)
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: CanBus(ifname), mBitrate(bitrate) {}
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ICanController::Result CanBusNative::preUp() {
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if (!netdevice::exists(mIfname)) {
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LOG(ERROR) << "Interface " << mIfname << " doesn't exist";
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return ICanController::Result::BAD_INTERFACE_ID;
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}
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if (mBitrate == 0) {
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// interface is already up and we just want to register it
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return ICanController::Result::OK;
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}
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if (!netdevice::down(mIfname)) {
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LOG(ERROR) << "Can't bring " << mIfname << " down (to configure it)";
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return ICanController::Result::UNKNOWN_ERROR;
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}
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if (!netdevice::can::setBitrate(mIfname, mBitrate)) {
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LOG(ERROR) << "Can't set bitrate " << mBitrate << " for " << mIfname;
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return ICanController::Result::BAD_BITRATE;
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}
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return ICanController::Result::OK;
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}
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} // namespace android::hardware::automotive::can::V1_0::implementation
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