bpfmap: Move to Common Location
Move bpfmap to frameworks/libs/net/common/native.
Bug: 179733303
Change-Id: Id08b216ec6a64968d66d7990f91ea7ce222a1154
diff --git a/Tethering/jni/com_android_networkstack_tethering_BpfMap.cpp b/Tethering/jni/com_android_networkstack_tethering_BpfMap.cpp
deleted file mode 100644
index 260dbc1..0000000
--- a/Tethering/jni/com_android_networkstack_tethering_BpfMap.cpp
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * Copyright (C) 2020 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.
- */
-
-#include <errno.h>
-#include <jni.h>
-#include <nativehelper/JNIHelp.h>
-#include <nativehelper/ScopedLocalRef.h>
-
-#include "nativehelper/scoped_primitive_array.h"
-#include "nativehelper/scoped_utf_chars.h"
-
-#define BPF_FD_JUST_USE_INT
-#include "BpfSyscallWrappers.h"
-
-namespace android {
-
-static jint com_android_networkstack_tethering_BpfMap_closeMap(JNIEnv *env, jobject clazz,
- jint fd) {
- int ret = close(fd);
-
- if (ret) jniThrowErrnoException(env, "closeMap", errno);
-
- return ret;
-}
-
-static jint com_android_networkstack_tethering_BpfMap_bpfFdGet(JNIEnv *env, jobject clazz,
- jstring path, jint mode) {
- ScopedUtfChars pathname(env, path);
-
- jint fd = bpf::bpfFdGet(pathname.c_str(), static_cast<unsigned>(mode));
-
- if (fd < 0) jniThrowErrnoException(env, "bpfFdGet", errno);
-
- return fd;
-}
-
-static void com_android_networkstack_tethering_BpfMap_writeToMapEntry(JNIEnv *env, jobject clazz,
- jint fd, jbyteArray key, jbyteArray value, jint flags) {
- ScopedByteArrayRO keyRO(env, key);
- ScopedByteArrayRO valueRO(env, value);
-
- int ret = bpf::writeToMapEntry(static_cast<int>(fd), keyRO.get(), valueRO.get(),
- static_cast<int>(flags));
-
- if (ret) jniThrowErrnoException(env, "writeToMapEntry", errno);
-}
-
-static jboolean throwIfNotEnoent(JNIEnv *env, const char* functionName, int ret, int err) {
- if (ret == 0) return true;
-
- if (err != ENOENT) jniThrowErrnoException(env, functionName, err);
- return false;
-}
-
-static jboolean com_android_networkstack_tethering_BpfMap_deleteMapEntry(JNIEnv *env, jobject clazz,
- jint fd, jbyteArray key) {
- ScopedByteArrayRO keyRO(env, key);
-
- // On success, zero is returned. If the element is not found, -1 is returned and errno is set
- // to ENOENT.
- int ret = bpf::deleteMapEntry(static_cast<int>(fd), keyRO.get());
-
- return throwIfNotEnoent(env, "deleteMapEntry", ret, errno);
-}
-
-static jboolean com_android_networkstack_tethering_BpfMap_getNextMapKey(JNIEnv *env, jobject clazz,
- jint fd, jbyteArray key, jbyteArray nextKey) {
- // If key is found, the operation returns zero and sets the next key pointer to the key of the
- // next element. If key is not found, the operation returns zero and sets the next key pointer
- // to the key of the first element. If key is the last element, -1 is returned and errno is
- // set to ENOENT. Other possible errno values are ENOMEM, EFAULT, EPERM, and EINVAL.
- ScopedByteArrayRW nextKeyRW(env, nextKey);
- int ret;
- if (key == nullptr) {
- // Called by getFirstKey. Find the first key in the map.
- ret = bpf::getNextMapKey(static_cast<int>(fd), nullptr, nextKeyRW.get());
- } else {
- ScopedByteArrayRO keyRO(env, key);
- ret = bpf::getNextMapKey(static_cast<int>(fd), keyRO.get(), nextKeyRW.get());
- }
-
- return throwIfNotEnoent(env, "getNextMapKey", ret, errno);
-}
-
-static jboolean com_android_networkstack_tethering_BpfMap_findMapEntry(JNIEnv *env, jobject clazz,
- jint fd, jbyteArray key, jbyteArray value) {
- ScopedByteArrayRO keyRO(env, key);
- ScopedByteArrayRW valueRW(env, value);
-
- // If an element is found, the operation returns zero and stores the element's value into
- // "value". If no element is found, the operation returns -1 and sets errno to ENOENT.
- int ret = bpf::findMapEntry(static_cast<int>(fd), keyRO.get(), valueRW.get());
-
- return throwIfNotEnoent(env, "findMapEntry", ret, errno);
-}
-
-/*
- * JNI registration.
- */
-static const JNINativeMethod gMethods[] = {
- /* name, signature, funcPtr */
- { "closeMap", "(I)I",
- (void*) com_android_networkstack_tethering_BpfMap_closeMap },
- { "bpfFdGet", "(Ljava/lang/String;I)I",
- (void*) com_android_networkstack_tethering_BpfMap_bpfFdGet },
- { "writeToMapEntry", "(I[B[BI)V",
- (void*) com_android_networkstack_tethering_BpfMap_writeToMapEntry },
- { "deleteMapEntry", "(I[B)Z",
- (void*) com_android_networkstack_tethering_BpfMap_deleteMapEntry },
- { "getNextMapKey", "(I[B[B)Z",
- (void*) com_android_networkstack_tethering_BpfMap_getNextMapKey },
- { "findMapEntry", "(I[B[B)Z",
- (void*) com_android_networkstack_tethering_BpfMap_findMapEntry },
-
-};
-
-int register_com_android_networkstack_tethering_BpfMap(JNIEnv* env) {
- return jniRegisterNativeMethods(env,
- "com/android/networkstack/tethering/BpfMap",
- gMethods, NELEM(gMethods));
-}
-
-}; // namespace android
diff --git a/Tethering/jni/onload.cpp b/Tethering/jni/onload.cpp
index 02e602d..fbae615 100644
--- a/Tethering/jni/onload.cpp
+++ b/Tethering/jni/onload.cpp
@@ -23,7 +23,7 @@
namespace android {
int register_android_net_util_TetheringUtils(JNIEnv* env);
-int register_com_android_networkstack_tethering_BpfMap(JNIEnv* env);
+int register_com_android_net_module_util_BpfMap(JNIEnv* env, char const* class_name);
int register_com_android_networkstack_tethering_BpfCoordinator(JNIEnv* env);
int register_com_android_networkstack_tethering_BpfUtils(JNIEnv* env);
@@ -36,7 +36,8 @@
if (register_android_net_util_TetheringUtils(env) < 0) return JNI_ERR;
- if (register_com_android_networkstack_tethering_BpfMap(env) < 0) return JNI_ERR;
+ if (register_com_android_net_module_util_BpfMap(env,
+ "com/android/networkstack/tethering/util/BpfMap") < 0) return JNI_ERR;
if (register_com_android_networkstack_tethering_BpfCoordinator(env) < 0) return JNI_ERR;