Merge "Add stable AIDL parcelables for IIpClient API"

core/java/android/net/apf/ApfCapabilities.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2016 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 android.net.apf;
+
+/**
+ * APF program support capabilities.
+ *
+ * @hide
+ */
+public class ApfCapabilities {
+    /**
+     * Version of APF instruction set supported for packet filtering. 0 indicates no support for
+     * packet filtering using APF programs.
+     */
+    public final int apfVersionSupported;
+
+    /**
+     * Maximum size of APF program allowed.
+     */
+    public final int maximumApfProgramSize;
+
+    /**
+     * Format of packets passed to APF filter. Should be one of ARPHRD_*
+     */
+    public final int apfPacketFormat;
+
+    public ApfCapabilities(
+            int apfVersionSupported, int maximumApfProgramSize, int apfPacketFormat) {
+        this.apfVersionSupported = apfVersionSupported;
+        this.maximumApfProgramSize = maximumApfProgramSize;
+        this.apfPacketFormat = apfPacketFormat;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("%s{version: %d, maxSize: %d, format: %d}", getClass().getSimpleName(),
+                apfVersionSupported, maximumApfProgramSize, apfPacketFormat);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof  ApfCapabilities)) return false;
+        final ApfCapabilities other = (ApfCapabilities) obj;
+        return apfVersionSupported == other.apfVersionSupported
+                && maximumApfProgramSize == other.maximumApfProgramSize
+                && apfPacketFormat == other.apfPacketFormat;
+    }
+
+    /**
+     * Returns true if the APF interpreter advertises support for the data buffer access opcodes
+     * LDDW and STDW.
+     *
+     * Full LDDW and STDW support is present from APFv4 on.
+     */
+    public boolean hasDataAccess() {
+        return apfVersionSupported >= 4;
+    }
+}