| /* |
| * 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; |
| } |
| |
| public String toString() { |
| return String.format("%s{version: %d, maxSize: %d, format: %d}", getClass().getSimpleName(), |
| apfVersionSupported, maximumApfProgramSize, 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; |
| } |
| } |