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/*
* Copyright (C) 2010 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.
*/
#define LOG_TAG "NetworkStatsNative"
#include <cutils/qtaguid.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <jni.h>
#include <nativehelper/ScopedUtfChars.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <utils/Log.h>
#include <utils/misc.h>
#include "bpf/BpfUtils.h"
#include "netdbpf/BpfNetworkStats.h"
using android::bpf::bpfGetUidStats;
using android::bpf::bpfGetIfaceStats;
namespace android {
// NOTE: keep these in sync with TrafficStats.java
static const uint64_t UNKNOWN = -1;
enum StatsType {
RX_BYTES = 0,
RX_PACKETS = 1,
TX_BYTES = 2,
TX_PACKETS = 3,
TCP_RX_PACKETS = 4,
TCP_TX_PACKETS = 5
};
static uint64_t getStatsType(Stats* stats, StatsType type) {
switch (type) {
case RX_BYTES:
return stats->rxBytes;
case RX_PACKETS:
return stats->rxPackets;
case TX_BYTES:
return stats->txBytes;
case TX_PACKETS:
return stats->txPackets;
case TCP_RX_PACKETS:
return stats->tcpRxPackets;
case TCP_TX_PACKETS:
return stats->tcpTxPackets;
default:
return UNKNOWN;
}
}
static jlong getTotalStat(JNIEnv* env, jclass clazz, jint type) {
Stats stats = {};
if (bpfGetIfaceStats(NULL, &stats) == 0) {
return getStatsType(&stats, (StatsType) type);
} else {
return UNKNOWN;
}
}
static jlong getIfaceStat(JNIEnv* env, jclass clazz, jstring iface, jint type) {
ScopedUtfChars iface8(env, iface);
if (iface8.c_str() == NULL) {
return UNKNOWN;
}
Stats stats = {};
if (bpfGetIfaceStats(iface8.c_str(), &stats) == 0) {
return getStatsType(&stats, (StatsType) type);
} else {
return UNKNOWN;
}
}
static jlong getUidStat(JNIEnv* env, jclass clazz, jint uid, jint type) {
Stats stats = {};
if (bpfGetUidStats(uid, &stats) == 0) {
return getStatsType(&stats, (StatsType) type);
} else {
return UNKNOWN;
}
}
static const JNINativeMethod gMethods[] = {
{"nativeGetTotalStat", "(I)J", (void*)getTotalStat},
{"nativeGetIfaceStat", "(Ljava/lang/String;I)J", (void*)getIfaceStat},
{"nativeGetUidStat", "(II)J", (void*)getUidStat},
};
int register_android_server_net_NetworkStatsService(JNIEnv* env) {
return jniRegisterNativeMethods(env, "com/android/server/net/NetworkStatsService", gMethods,
NELEM(gMethods));
}
}
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