Use NetworkStatsService to get stats for apps
Move the native implementation of TrafficStats to NetworkStatsService and apps need to get the NetworkStatsService binder interface from system_server in order to get the network usage stats since boot. This implementation can hide the detail of retrieving network traffic information from apps and the NetworkStatsService can choose which methoed it use to get the data depending on the kernel version of the device. Bug: 30950746 Test: CtsNetTestCases -t android.net.cts.TrafficStatsTest Change-Id: I53bbefd19aa0b783b9b4b42ea4d76db3e9ec07a3
This commit is contained in:
Chenbo Feng
214
services/core/jni/com_android_server_net_NetworkStatsService.cpp
Normal file
214
services/core/jni/com_android_server_net_NetworkStatsService.cpp
Normal file
@@ -0,0 +1,214 @@
|
||||
/*
|
||||
* 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 <dirent.h>
|
||||
#include <errno.h>
|
||||
#include <fcntl.h>
|
||||
#include <inttypes.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/types.h>
|
||||
|
||||
#include "core_jni_helpers.h"
|
||||
#include <jni.h>
|
||||
#include <nativehelper/ScopedUtfChars.h>
|
||||
#include <utils/misc.h>
|
||||
#include <utils/Log.h>
|
||||
|
||||
namespace android {
|
||||
|
||||
static const char* QTAGUID_IFACE_STATS = "/proc/net/xt_qtaguid/iface_stat_fmt";
|
||||
static const char* QTAGUID_UID_STATS = "/proc/net/xt_qtaguid/stats";
|
||||
|
||||
// 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
|
||||
};
|
||||
|
||||
struct Stats {
|
||||
uint64_t rxBytes;
|
||||
uint64_t rxPackets;
|
||||
uint64_t txBytes;
|
||||
uint64_t txPackets;
|
||||
uint64_t tcpRxPackets;
|
||||
uint64_t tcpTxPackets;
|
||||
};
|
||||
|
||||
static uint64_t getStatsType(struct 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 int parseIfaceStats(const char* iface, struct Stats* stats) {
|
||||
FILE *fp = fopen(QTAGUID_IFACE_STATS, "r");
|
||||
if (fp == NULL) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
char buffer[384];
|
||||
char cur_iface[32];
|
||||
bool foundTcp = false;
|
||||
uint64_t rxBytes, rxPackets, txBytes, txPackets, tcpRxPackets, tcpTxPackets;
|
||||
|
||||
while (fgets(buffer, sizeof(buffer), fp) != NULL) {
|
||||
int matched = sscanf(buffer, "%31s %" SCNu64 " %" SCNu64 " %" SCNu64
|
||||
" %" SCNu64 " " "%*u %" SCNu64 " %*u %*u %*u %*u "
|
||||
"%*u %" SCNu64 " %*u %*u %*u %*u", cur_iface, &rxBytes,
|
||||
&rxPackets, &txBytes, &txPackets, &tcpRxPackets, &tcpTxPackets);
|
||||
if (matched >= 5) {
|
||||
if (matched == 7) {
|
||||
foundTcp = true;
|
||||
}
|
||||
if (!iface || !strcmp(iface, cur_iface)) {
|
||||
stats->rxBytes += rxBytes;
|
||||
stats->rxPackets += rxPackets;
|
||||
stats->txBytes += txBytes;
|
||||
stats->txPackets += txPackets;
|
||||
if (matched == 7) {
|
||||
stats->tcpRxPackets += tcpRxPackets;
|
||||
stats->tcpTxPackets += tcpTxPackets;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!foundTcp) {
|
||||
stats->tcpRxPackets = UNKNOWN;
|
||||
stats->tcpTxPackets = UNKNOWN;
|
||||
}
|
||||
|
||||
if (fclose(fp) != 0) {
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int parseUidStats(const uint32_t uid, struct Stats* stats) {
|
||||
FILE *fp = fopen(QTAGUID_UID_STATS, "r");
|
||||
if (fp == NULL) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
char buffer[384];
|
||||
char iface[32];
|
||||
uint32_t idx, cur_uid, set;
|
||||
uint64_t tag, rxBytes, rxPackets, txBytes, txPackets;
|
||||
|
||||
while (fgets(buffer, sizeof(buffer), fp) != NULL) {
|
||||
if (sscanf(buffer,
|
||||
"%" SCNu32 " %31s 0x%" SCNx64 " %u %u %" SCNu64 " %" SCNu64
|
||||
" %" SCNu64 " %" SCNu64 "",
|
||||
&idx, iface, &tag, &cur_uid, &set, &rxBytes, &rxPackets,
|
||||
&txBytes, &txPackets) == 9) {
|
||||
if (uid == cur_uid && tag == 0L) {
|
||||
stats->rxBytes += rxBytes;
|
||||
stats->rxPackets += rxPackets;
|
||||
stats->txBytes += txBytes;
|
||||
stats->txPackets += txPackets;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (fclose(fp) != 0) {
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static jlong getTotalStat(JNIEnv* env, jclass clazz, jint type) {
|
||||
struct Stats stats;
|
||||
memset(&stats, 0, sizeof(Stats));
|
||||
if (parseIfaceStats(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;
|
||||
}
|
||||
|
||||
struct Stats stats;
|
||||
memset(&stats, 0, sizeof(Stats));
|
||||
if (parseIfaceStats(iface8.c_str(), &stats) == 0) {
|
||||
return getStatsType(&stats, (StatsType) type);
|
||||
} else {
|
||||
return UNKNOWN;
|
||||
}
|
||||
}
|
||||
|
||||
static jlong getUidStat(JNIEnv* env, jclass clazz, jint uid, jint type) {
|
||||
struct Stats stats;
|
||||
memset(&stats, 0, sizeof(Stats));
|
||||
if (parseUidStats(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) {
|
||||
jclass netStatsService = env->FindClass("com/android/server/net/NetworkStatsService");
|
||||
jfieldID rxBytesId = env->GetStaticFieldID(netStatsService, "TYPE_RX_BYTES", "I");
|
||||
jfieldID rxPacketsId = env->GetStaticFieldID(netStatsService, "TYPE_RX_PACKETS", "I");
|
||||
jfieldID txBytesId = env->GetStaticFieldID(netStatsService, "TYPE_TX_BYTES", "I");
|
||||
jfieldID txPacketsId = env->GetStaticFieldID(netStatsService, "TYPE_TX_PACKETS", "I");
|
||||
jfieldID tcpRxPacketsId = env->GetStaticFieldID(netStatsService, "TYPE_TCP_RX_PACKETS", "I");
|
||||
jfieldID tcpTxPacketsId = env->GetStaticFieldID(netStatsService, "TYPE_TCP_TX_PACKETS", "I");
|
||||
|
||||
env->SetStaticIntField(netStatsService, rxBytesId, RX_BYTES);
|
||||
env->SetStaticIntField(netStatsService, rxPacketsId, RX_PACKETS);
|
||||
env->SetStaticIntField(netStatsService, txBytesId, TX_BYTES);
|
||||
env->SetStaticIntField(netStatsService, txPacketsId, TX_PACKETS);
|
||||
env->SetStaticIntField(netStatsService, tcpRxPacketsId, TCP_RX_PACKETS);
|
||||
env->SetStaticIntField(netStatsService, tcpTxPacketsId, TCP_TX_PACKETS);
|
||||
|
||||
return jniRegisterNativeMethods(env, "com/android/server/net/NetworkStatsService", gMethods,
|
||||
NELEM(gMethods));
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user