From 03e3ceaab1889d115136179110e1899aad6a611a Mon Sep 17 00:00:00 2001
From: Yang Sun <sunytt@google.com>
Date: Sun, 10 Dec 2023 21:59:41 +0800
Subject: [PATCH] Add mif6ctl struct definition.
This is used to configure interfaces for multicast routing.
Test: atest NetworkStaticLibTests:com.android.net.moduletests.util.structs.StructMif6ctlTest
Change-Id: Ic26cddab2d5a9f90f63b0828c3e133d830aa0db4
---
.../module/util/structs/StructMif6ctl.java | 46 ++++++++++++
.../util/structs/StructMif6ctlTest.java | 70 +++++++++++++++++++
2 files changed, 116 insertions(+)
create mode 100644 staticlibs/device/com/android/net/module/util/structs/StructMif6ctl.java
create mode 100644 staticlibs/tests/unit/src/com/android/net/module/util/structs/StructMif6ctlTest.java
diff --git a/staticlibs/device/com/android/net/module/util/structs/StructMif6ctl.java b/staticlibs/device/com/android/net/module/util/structs/StructMif6ctl.java
new file mode 100644
index 0000000000..626a170126
--- /dev/null
+++ b/staticlibs/device/com/android/net/module/util/structs/StructMif6ctl.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2023 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.
+ */
+
+package com.android.net.module.util.structs;
+
+import com.android.net.module.util.Struct;
+
+/*
+ * Implements the mif6ctl structure which is used to add a multicast routing
+ * interface, see /usr/include/linux/mroute6.h
+ */
+public class StructMif6ctl extends Struct {
+ @Field(order = 0, type = Type.U16)
+ public final int mif6cMifi; // Index of MIF
+ @Field(order = 1, type = Type.U8)
+ public final short mif6cFlags; // MIFF_ flags
+ @Field(order = 2, type = Type.U8)
+ public final short vifcThreshold; // ttl limit
+ @Field(order = 3, type = Type.U16)
+ public final int mif6cPifi; //the index of the physical IF
+ @Field(order = 4, type = Type.U32, padding = 2)
+ public final long vifcRateLimit; // Rate limiter values (NI)
+
+ public StructMif6ctl(final int mif6cMifi, final short mif6cFlags, final short vifcThreshold,
+ final int mif6cPifi, final long vifcRateLimit) {
+ this.mif6cMifi = mif6cMifi;
+ this.mif6cFlags = mif6cFlags;
+ this.vifcThreshold = vifcThreshold;
+ this.mif6cPifi = mif6cPifi;
+ this.vifcRateLimit = vifcRateLimit;
+ }
+}
+
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/structs/StructMif6ctlTest.java b/staticlibs/tests/unit/src/com/android/net/module/util/structs/StructMif6ctlTest.java
new file mode 100644
index 0000000000..75196e4f78
--- /dev/null
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/structs/StructMif6ctlTest.java
@@ -0,0 +1,70 @@
+package com.android.net.module.util.structs;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import android.util.ArraySet;
+import androidx.test.runner.AndroidJUnit4;
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.Arrays;
+import java.util.Set;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class StructMif6ctlTest {
+ private static final byte[] MSG_BYTES = new byte[] {
+ 1, 0, /* mif6cMifi */
+ 0, /* mif6cFlags */
+ 1, /* vifcThreshold*/
+ 20, 0, /* mif6cPifi */
+ 0, 0, 0, 0, /* vifcRateLimit */
+ 0, 0 /* padding */
+ };
+
+ @Test
+ public void testConstructor() {
+ StructMif6ctl mif6ctl = new StructMif6ctl(10 /* mif6cMifi */,
+ (short) 11 /* mif6cFlags */,
+ (short) 12 /* vifcThreshold */,
+ 13 /* mif6cPifi */,
+ 14L /* vifcRateLimit */);
+
+ assertEquals(10, mif6ctl.mif6cMifi);
+ assertEquals(11, mif6ctl.mif6cFlags);
+ assertEquals(12, mif6ctl.vifcThreshold);
+ assertEquals(13, mif6ctl.mif6cPifi);
+ assertEquals(14, mif6ctl.vifcRateLimit);
+ }
+
+ @Test
+ public void testParseMif6ctl() {
+ final ByteBuffer buf = ByteBuffer.wrap(MSG_BYTES);
+ buf.order(ByteOrder.nativeOrder());
+ StructMif6ctl mif6ctl = StructMif6ctl.parse(StructMif6ctl.class, buf);
+
+ assertEquals(1, mif6ctl.mif6cMifi);
+ assertEquals(0, mif6ctl.mif6cFlags);
+ assertEquals(1, mif6ctl.vifcThreshold);
+ assertEquals(20, mif6ctl.mif6cPifi);
+ assertEquals(0, mif6ctl.vifcRateLimit);
+ }
+
+ @Test
+ public void testWriteToBytes() {
+ StructMif6ctl mif6ctl = new StructMif6ctl(1 /* mif6cMifi */,
+ (short) 0 /* mif6cFlags */,
+ (short) 1 /* vifcThreshold */,
+ 20 /* mif6cPifi */,
+ (long) 0 /* vifcRateLimit */);
+
+ byte[] bytes = mif6ctl.writeToBytes();
+
+ assertArrayEquals("bytes = " + Arrays.toString(bytes), MSG_BYTES, bytes);
+ }
+}
--
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