4e92da06fa
This CL adds the counters collected by the tethering programs to
the output of "dumpsys tethering bpf". The counter names are
fetched by JNI code at startup and then read by the debugging
code on demand.
Example from my device:
Forwarding errors:
TCP_CONTROL_PACKET: 67
NON_GLOBAL_SRC: 13
NON_GLOBAL_DST: 17
LOCAL_SRC_DST: 7
Test: manual (debug-only code)
Change-Id: I7ec7992612556a4bca5f1b6bb52c655d6d870201
46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
/*
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* Copyright (C) 2020 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 <nativehelper/JNIHelp.h>
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#include "jni.h"
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#define LOG_TAG "TetheringJni"
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#include <android/log.h>
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namespace android {
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int register_android_net_util_TetheringUtils(JNIEnv* env);
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int register_com_android_networkstack_tethering_BpfMap(JNIEnv* env);
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int register_com_android_networkstack_tethering_BpfCoordinator(JNIEnv* env);
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extern "C" jint JNI_OnLoad(JavaVM* vm, void*) {
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JNIEnv *env;
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if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) {
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__android_log_print(ANDROID_LOG_FATAL, LOG_TAG, "ERROR: GetEnv failed");
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return JNI_ERR;
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}
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if (register_android_net_util_TetheringUtils(env) < 0) return JNI_ERR;
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if (register_com_android_networkstack_tethering_BpfMap(env) < 0) return JNI_ERR;
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if (register_com_android_networkstack_tethering_BpfCoordinator(env) < 0) return JNI_ERR;
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return JNI_VERSION_1_6;
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}
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}; // namespace android
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