Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #define LOG_TAG "NetworkStats" |
| 18 | |
| 19 | #include <errno.h> |
Andreas Gampe | 0f0b491 | 2014-11-12 08:03:48 -0800 | [diff] [blame] | 20 | #include <inttypes.h> |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 21 | #include <sys/stat.h> |
| 22 | #include <sys/types.h> |
| 23 | |
Andreas Gampe | ed6b9df | 2014-11-20 22:02:20 -0800 | [diff] [blame] | 24 | #include <core_jni_helpers.h> |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 25 | #include <jni.h> |
| 26 | |
Steven Moreland | 2279b25 | 2017-07-19 09:50:45 -0700 | [diff] [blame] | 27 | #include <nativehelper/ScopedUtfChars.h> |
| 28 | #include <nativehelper/ScopedLocalRef.h> |
| 29 | #include <nativehelper/ScopedPrimitiveArray.h> |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 30 | |
| 31 | #include <utils/Log.h> |
| 32 | #include <utils/misc.h> |
Chenbo Feng | 828f1b4 | 2017-11-20 17:03:59 -0800 | [diff] [blame] | 33 | |
| 34 | #include "android-base/unique_fd.h" |
| 35 | #include "bpf/BpfNetworkStats.h" |
| 36 | #include "bpf/BpfUtils.h" |
| 37 | |
| 38 | using android::bpf::hasBpfSupport; |
| 39 | using android::bpf::parseBpfNetworkStatsDetail; |
| 40 | using android::bpf::stats_line; |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 41 | |
| 42 | namespace android { |
| 43 | |
| 44 | static jclass gStringClass; |
| 45 | |
| 46 | static struct { |
| 47 | jfieldID size; |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 48 | jfieldID capacity; |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 49 | jfieldID iface; |
| 50 | jfieldID uid; |
| 51 | jfieldID set; |
| 52 | jfieldID tag; |
Stephen Chen | c926b73 | 2016-10-21 12:44:26 -0700 | [diff] [blame] | 53 | jfieldID metered; |
Jeff Davidson | a6a7807 | 2016-01-11 16:02:17 -0800 | [diff] [blame] | 54 | jfieldID roaming; |
Lorenzo Colitti | ada23ed | 2018-01-19 01:05:20 +0900 | [diff] [blame] | 55 | jfieldID defaultNetwork; |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 56 | jfieldID rxBytes; |
| 57 | jfieldID rxPackets; |
| 58 | jfieldID txBytes; |
| 59 | jfieldID txPackets; |
| 60 | jfieldID operations; |
| 61 | } gNetworkStatsClassInfo; |
| 62 | |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 63 | static jobjectArray get_string_array(JNIEnv* env, jobject obj, jfieldID field, int size, bool grow) |
| 64 | { |
| 65 | if (!grow) { |
| 66 | jobjectArray array = (jobjectArray)env->GetObjectField(obj, field); |
| 67 | if (array != NULL) { |
| 68 | return array; |
| 69 | } |
| 70 | } |
| 71 | return env->NewObjectArray(size, gStringClass, NULL); |
| 72 | } |
| 73 | |
| 74 | static jintArray get_int_array(JNIEnv* env, jobject obj, jfieldID field, int size, bool grow) |
| 75 | { |
| 76 | if (!grow) { |
| 77 | jintArray array = (jintArray)env->GetObjectField(obj, field); |
| 78 | if (array != NULL) { |
| 79 | return array; |
| 80 | } |
| 81 | } |
| 82 | return env->NewIntArray(size); |
| 83 | } |
| 84 | |
| 85 | static jlongArray get_long_array(JNIEnv* env, jobject obj, jfieldID field, int size, bool grow) |
| 86 | { |
| 87 | if (!grow) { |
| 88 | jlongArray array = (jlongArray)env->GetObjectField(obj, field); |
| 89 | if (array != NULL) { |
| 90 | return array; |
| 91 | } |
| 92 | } |
| 93 | return env->NewLongArray(size); |
| 94 | } |
| 95 | |
Chenbo Feng | 828f1b4 | 2017-11-20 17:03:59 -0800 | [diff] [blame] | 96 | static int legacyReadNetworkStatsDetail(std::vector<stats_line>* lines, |
| 97 | const std::vector<std::string>& limitIfaces, |
| 98 | int limitTag, int limitUid, const char* path) { |
| 99 | FILE* fp = fopen(path, "r"); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 100 | if (fp == NULL) { |
| 101 | return -1; |
| 102 | } |
| 103 | |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 104 | int lastIdx = 1; |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 105 | int idx; |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 106 | char buffer[384]; |
| 107 | while (fgets(buffer, sizeof(buffer), fp) != NULL) { |
| 108 | stats_line s; |
| 109 | int64_t rawTag; |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 110 | char* pos = buffer; |
| 111 | char* endPos; |
| 112 | // First field is the index. |
| 113 | idx = (int)strtol(pos, &endPos, 10); |
| 114 | //ALOGI("Index #%d: %s", idx, buffer); |
| 115 | if (pos == endPos) { |
| 116 | // Skip lines that don't start with in index. In particular, |
| 117 | // this will skip the initial header line. |
| 118 | continue; |
| 119 | } |
| 120 | if (idx != lastIdx + 1) { |
| 121 | ALOGE("inconsistent idx=%d after lastIdx=%d: %s", idx, lastIdx, buffer); |
| 122 | fclose(fp); |
| 123 | return -1; |
| 124 | } |
| 125 | lastIdx = idx; |
| 126 | pos = endPos; |
| 127 | // Skip whitespace. |
| 128 | while (*pos == ' ') { |
| 129 | pos++; |
| 130 | } |
| 131 | // Next field is iface. |
| 132 | int ifaceIdx = 0; |
| 133 | while (*pos != ' ' && *pos != 0 && ifaceIdx < (int)(sizeof(s.iface)-1)) { |
| 134 | s.iface[ifaceIdx] = *pos; |
| 135 | ifaceIdx++; |
| 136 | pos++; |
| 137 | } |
| 138 | if (*pos != ' ') { |
| 139 | ALOGE("bad iface: %s", buffer); |
| 140 | fclose(fp); |
| 141 | return -1; |
| 142 | } |
| 143 | s.iface[ifaceIdx] = 0; |
| 144 | if (limitIfaces.size() > 0) { |
| 145 | // Is this an iface the caller is interested in? |
| 146 | int i = 0; |
| 147 | while (i < (int)limitIfaces.size()) { |
| 148 | if (limitIfaces[i] == s.iface) { |
| 149 | break; |
| 150 | } |
| 151 | i++; |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 152 | } |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 153 | if (i >= (int)limitIfaces.size()) { |
| 154 | // Nothing matched; skip this line. |
| 155 | //ALOGI("skipping due to iface: %s", buffer); |
| 156 | continue; |
| 157 | } |
| 158 | } |
Jeff Sharkey | e47d543 | 2014-09-09 12:29:41 -0700 | [diff] [blame] | 159 | |
| 160 | // Ignore whitespace |
| 161 | while (*pos == ' ') pos++; |
| 162 | |
| 163 | // Find end of tag field |
| 164 | endPos = pos; |
| 165 | while (*endPos != ' ') endPos++; |
| 166 | |
| 167 | // Three digit field is always 0x0, otherwise parse |
| 168 | if (endPos - pos == 3) { |
| 169 | rawTag = 0; |
| 170 | } else { |
Andreas Gampe | 0f0b491 | 2014-11-12 08:03:48 -0800 | [diff] [blame] | 171 | if (sscanf(pos, "%" PRIx64, &rawTag) != 1) { |
Jeff Sharkey | e47d543 | 2014-09-09 12:29:41 -0700 | [diff] [blame] | 172 | ALOGE("bad tag: %s", pos); |
| 173 | fclose(fp); |
| 174 | return -1; |
| 175 | } |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 176 | } |
| 177 | s.tag = rawTag >> 32; |
| 178 | if (limitTag != -1 && s.tag != limitTag) { |
| 179 | //ALOGI("skipping due to tag: %s", buffer); |
| 180 | continue; |
| 181 | } |
| 182 | pos = endPos; |
Jeff Sharkey | e47d543 | 2014-09-09 12:29:41 -0700 | [diff] [blame] | 183 | |
| 184 | // Ignore whitespace |
| 185 | while (*pos == ' ') pos++; |
| 186 | |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 187 | // Parse remaining fields. |
Andreas Gampe | 0f0b491 | 2014-11-12 08:03:48 -0800 | [diff] [blame] | 188 | if (sscanf(pos, "%u %u %" PRIu64 " %" PRIu64 " %" PRIu64 " %" PRIu64, |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 189 | &s.uid, &s.set, &s.rxBytes, &s.rxPackets, |
| 190 | &s.txBytes, &s.txPackets) == 6) { |
| 191 | if (limitUid != -1 && limitUid != s.uid) { |
| 192 | //ALOGI("skipping due to uid: %s", buffer); |
| 193 | continue; |
| 194 | } |
Chenbo Feng | 828f1b4 | 2017-11-20 17:03:59 -0800 | [diff] [blame] | 195 | lines->push_back(s); |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 196 | } else { |
| 197 | //ALOGI("skipping due to bad remaining fields: %s", pos); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 198 | } |
| 199 | } |
| 200 | |
| 201 | if (fclose(fp) != 0) { |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 202 | ALOGE("Failed to close netstats file"); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 203 | return -1; |
| 204 | } |
Chenbo Feng | 828f1b4 | 2017-11-20 17:03:59 -0800 | [diff] [blame] | 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | static int readNetworkStatsDetail(JNIEnv* env, jclass clazz, jobject stats, jstring path, |
| 209 | jint limitUid, jobjectArray limitIfacesObj, jint limitTag, |
| 210 | jboolean useBpfStats) { |
| 211 | ScopedUtfChars path8(env, path); |
| 212 | if (path8.c_str() == NULL) { |
| 213 | return -1; |
| 214 | } |
| 215 | |
| 216 | std::vector<std::string> limitIfaces; |
| 217 | if (limitIfacesObj != NULL && env->GetArrayLength(limitIfacesObj) > 0) { |
| 218 | int num = env->GetArrayLength(limitIfacesObj); |
| 219 | for (int i = 0; i < num; i++) { |
| 220 | jstring string = (jstring)env->GetObjectArrayElement(limitIfacesObj, i); |
| 221 | ScopedUtfChars string8(env, string); |
| 222 | if (string8.c_str() != NULL) { |
| 223 | limitIfaces.push_back(std::string(string8.c_str())); |
| 224 | } |
| 225 | } |
| 226 | } |
| 227 | std::vector<stats_line> lines; |
| 228 | |
| 229 | |
| 230 | if (useBpfStats) { |
| 231 | if (parseBpfNetworkStatsDetail(&lines, limitIfaces, limitTag, limitUid) < 0) |
| 232 | return -1; |
| 233 | } else { |
| 234 | if (legacyReadNetworkStatsDetail(&lines, limitIfaces, limitTag, |
| 235 | limitUid, path8.c_str()) < 0) |
| 236 | return -1; |
| 237 | } |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 238 | |
| 239 | int size = lines.size(); |
Chenbo Feng | 828f1b4 | 2017-11-20 17:03:59 -0800 | [diff] [blame] | 240 | |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 241 | bool grow = size > env->GetIntField(stats, gNetworkStatsClassInfo.capacity); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 242 | |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 243 | ScopedLocalRef<jobjectArray> iface(env, get_string_array(env, stats, |
| 244 | gNetworkStatsClassInfo.iface, size, grow)); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 245 | if (iface.get() == NULL) return -1; |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 246 | ScopedIntArrayRW uid(env, get_int_array(env, stats, |
| 247 | gNetworkStatsClassInfo.uid, size, grow)); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 248 | if (uid.get() == NULL) return -1; |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 249 | ScopedIntArrayRW set(env, get_int_array(env, stats, |
| 250 | gNetworkStatsClassInfo.set, size, grow)); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 251 | if (set.get() == NULL) return -1; |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 252 | ScopedIntArrayRW tag(env, get_int_array(env, stats, |
| 253 | gNetworkStatsClassInfo.tag, size, grow)); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 254 | if (tag.get() == NULL) return -1; |
Stephen Chen | c926b73 | 2016-10-21 12:44:26 -0700 | [diff] [blame] | 255 | ScopedIntArrayRW metered(env, get_int_array(env, stats, |
| 256 | gNetworkStatsClassInfo.metered, size, grow)); |
| 257 | if (metered.get() == NULL) return -1; |
Jeff Davidson | a6a7807 | 2016-01-11 16:02:17 -0800 | [diff] [blame] | 258 | ScopedIntArrayRW roaming(env, get_int_array(env, stats, |
| 259 | gNetworkStatsClassInfo.roaming, size, grow)); |
| 260 | if (roaming.get() == NULL) return -1; |
Lorenzo Colitti | ada23ed | 2018-01-19 01:05:20 +0900 | [diff] [blame] | 261 | ScopedIntArrayRW defaultNetwork(env, get_int_array(env, stats, |
| 262 | gNetworkStatsClassInfo.defaultNetwork, size, grow)); |
| 263 | if (defaultNetwork.get() == NULL) return -1; |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 264 | ScopedLongArrayRW rxBytes(env, get_long_array(env, stats, |
| 265 | gNetworkStatsClassInfo.rxBytes, size, grow)); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 266 | if (rxBytes.get() == NULL) return -1; |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 267 | ScopedLongArrayRW rxPackets(env, get_long_array(env, stats, |
| 268 | gNetworkStatsClassInfo.rxPackets, size, grow)); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 269 | if (rxPackets.get() == NULL) return -1; |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 270 | ScopedLongArrayRW txBytes(env, get_long_array(env, stats, |
| 271 | gNetworkStatsClassInfo.txBytes, size, grow)); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 272 | if (txBytes.get() == NULL) return -1; |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 273 | ScopedLongArrayRW txPackets(env, get_long_array(env, stats, |
| 274 | gNetworkStatsClassInfo.txPackets, size, grow)); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 275 | if (txPackets.get() == NULL) return -1; |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 276 | ScopedLongArrayRW operations(env, get_long_array(env, stats, |
| 277 | gNetworkStatsClassInfo.operations, size, grow)); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 278 | if (operations.get() == NULL) return -1; |
| 279 | |
| 280 | for (int i = 0; i < size; i++) { |
| 281 | ScopedLocalRef<jstring> ifaceString(env, env->NewStringUTF(lines[i].iface)); |
| 282 | env->SetObjectArrayElement(iface.get(), i, ifaceString.get()); |
| 283 | |
| 284 | uid[i] = lines[i].uid; |
| 285 | set[i] = lines[i].set; |
| 286 | tag[i] = lines[i].tag; |
Lorenzo Colitti | ada23ed | 2018-01-19 01:05:20 +0900 | [diff] [blame] | 287 | // Metered, roaming and defaultNetwork are populated in Java-land. |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 288 | rxBytes[i] = lines[i].rxBytes; |
| 289 | rxPackets[i] = lines[i].rxPackets; |
| 290 | txBytes[i] = lines[i].txBytes; |
| 291 | txPackets[i] = lines[i].txPackets; |
| 292 | } |
| 293 | |
| 294 | env->SetIntField(stats, gNetworkStatsClassInfo.size, size); |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 295 | if (grow) { |
| 296 | env->SetIntField(stats, gNetworkStatsClassInfo.capacity, size); |
| 297 | env->SetObjectField(stats, gNetworkStatsClassInfo.iface, iface.get()); |
| 298 | env->SetObjectField(stats, gNetworkStatsClassInfo.uid, uid.getJavaArray()); |
| 299 | env->SetObjectField(stats, gNetworkStatsClassInfo.set, set.getJavaArray()); |
| 300 | env->SetObjectField(stats, gNetworkStatsClassInfo.tag, tag.getJavaArray()); |
Stephen Chen | c926b73 | 2016-10-21 12:44:26 -0700 | [diff] [blame] | 301 | env->SetObjectField(stats, gNetworkStatsClassInfo.metered, metered.getJavaArray()); |
Jeff Davidson | a6a7807 | 2016-01-11 16:02:17 -0800 | [diff] [blame] | 302 | env->SetObjectField(stats, gNetworkStatsClassInfo.roaming, roaming.getJavaArray()); |
Lorenzo Colitti | ada23ed | 2018-01-19 01:05:20 +0900 | [diff] [blame] | 303 | env->SetObjectField(stats, gNetworkStatsClassInfo.defaultNetwork, |
| 304 | defaultNetwork.getJavaArray()); |
Dianne Hackborn | d0c5b9a | 2014-02-21 16:19:05 -0800 | [diff] [blame] | 305 | env->SetObjectField(stats, gNetworkStatsClassInfo.rxBytes, rxBytes.getJavaArray()); |
| 306 | env->SetObjectField(stats, gNetworkStatsClassInfo.rxPackets, rxPackets.getJavaArray()); |
| 307 | env->SetObjectField(stats, gNetworkStatsClassInfo.txBytes, txBytes.getJavaArray()); |
| 308 | env->SetObjectField(stats, gNetworkStatsClassInfo.txPackets, txPackets.getJavaArray()); |
| 309 | env->SetObjectField(stats, gNetworkStatsClassInfo.operations, operations.getJavaArray()); |
| 310 | } |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 311 | |
| 312 | return 0; |
| 313 | } |
| 314 | |
Daniel Micay | 76f6a86 | 2015-09-19 17:31:01 -0400 | [diff] [blame] | 315 | static const JNINativeMethod gMethods[] = { |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 316 | { "nativeReadNetworkStatsDetail", |
Chenbo Feng | 828f1b4 | 2017-11-20 17:03:59 -0800 | [diff] [blame] | 317 | "(Landroid/net/NetworkStats;Ljava/lang/String;I[Ljava/lang/String;IZ)I", |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 318 | (void*) readNetworkStatsDetail } |
| 319 | }; |
| 320 | |
| 321 | int register_com_android_internal_net_NetworkStatsFactory(JNIEnv* env) { |
Andreas Gampe | ed6b9df | 2014-11-20 22:02:20 -0800 | [diff] [blame] | 322 | int err = RegisterMethodsOrDie(env, |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 323 | "com/android/internal/net/NetworkStatsFactory", gMethods, |
| 324 | NELEM(gMethods)); |
| 325 | |
Andreas Gampe | ed6b9df | 2014-11-20 22:02:20 -0800 | [diff] [blame] | 326 | gStringClass = FindClassOrDie(env, "java/lang/String"); |
| 327 | gStringClass = MakeGlobalRefOrDie(env, gStringClass); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 328 | |
Andreas Gampe | ed6b9df | 2014-11-20 22:02:20 -0800 | [diff] [blame] | 329 | jclass clazz = FindClassOrDie(env, "android/net/NetworkStats"); |
| 330 | gNetworkStatsClassInfo.size = GetFieldIDOrDie(env, clazz, "size", "I"); |
| 331 | gNetworkStatsClassInfo.capacity = GetFieldIDOrDie(env, clazz, "capacity", "I"); |
| 332 | gNetworkStatsClassInfo.iface = GetFieldIDOrDie(env, clazz, "iface", "[Ljava/lang/String;"); |
| 333 | gNetworkStatsClassInfo.uid = GetFieldIDOrDie(env, clazz, "uid", "[I"); |
| 334 | gNetworkStatsClassInfo.set = GetFieldIDOrDie(env, clazz, "set", "[I"); |
| 335 | gNetworkStatsClassInfo.tag = GetFieldIDOrDie(env, clazz, "tag", "[I"); |
Stephen Chen | c926b73 | 2016-10-21 12:44:26 -0700 | [diff] [blame] | 336 | gNetworkStatsClassInfo.metered = GetFieldIDOrDie(env, clazz, "metered", "[I"); |
Jeff Davidson | a6a7807 | 2016-01-11 16:02:17 -0800 | [diff] [blame] | 337 | gNetworkStatsClassInfo.roaming = GetFieldIDOrDie(env, clazz, "roaming", "[I"); |
Lorenzo Colitti | ada23ed | 2018-01-19 01:05:20 +0900 | [diff] [blame] | 338 | gNetworkStatsClassInfo.defaultNetwork = GetFieldIDOrDie(env, clazz, "defaultNetwork", "[I"); |
Andreas Gampe | ed6b9df | 2014-11-20 22:02:20 -0800 | [diff] [blame] | 339 | gNetworkStatsClassInfo.rxBytes = GetFieldIDOrDie(env, clazz, "rxBytes", "[J"); |
| 340 | gNetworkStatsClassInfo.rxPackets = GetFieldIDOrDie(env, clazz, "rxPackets", "[J"); |
| 341 | gNetworkStatsClassInfo.txBytes = GetFieldIDOrDie(env, clazz, "txBytes", "[J"); |
| 342 | gNetworkStatsClassInfo.txPackets = GetFieldIDOrDie(env, clazz, "txPackets", "[J"); |
| 343 | gNetworkStatsClassInfo.operations = GetFieldIDOrDie(env, clazz, "operations", "[J"); |
Jeff Sharkey | 9a2c2a6 | 2013-01-14 16:48:51 -0800 | [diff] [blame] | 344 | |
| 345 | return err; |
| 346 | } |
| 347 | |
| 348 | } |