| /* |
| * Copyright 2016-present Open Networking Laboratory |
| * |
| * 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 org.onosproject.bmv2.demo.app.ecmp; |
| |
| import com.google.common.collect.ImmutableMap; |
| import org.onlab.util.ImmutableByteSequence; |
| import org.onosproject.bmv2.api.context.Bmv2HeaderTypeModel; |
| import org.onosproject.bmv2.api.runtime.Bmv2ExactMatchParam; |
| import org.onosproject.bmv2.api.runtime.Bmv2ExtensionSelector; |
| import org.onosproject.bmv2.api.utils.Bmv2TranslatorUtils; |
| import org.onosproject.net.flow.criteria.ExtensionSelector; |
| |
| import static org.onosproject.bmv2.api.utils.Bmv2TranslatorUtils.fitByteSequence; |
| import static org.onosproject.bmv2.demo.app.ecmp.EcmpFabricApp.ECMP_CONTEXT; |
| import static org.onosproject.bmv2.demo.app.ecmp.EcmpInterpreter.*; |
| |
| /** |
| * Builder of ECMP group table extension selector. |
| */ |
| public class EcmpGroupTableSelectorBuilder { |
| |
| private int groupId; |
| private int selector; |
| |
| /** |
| * Sets the ECMP group ID. |
| * |
| * @param groupId an integer value |
| * @return this |
| */ |
| public EcmpGroupTableSelectorBuilder withGroupId(int groupId) { |
| this.groupId = groupId; |
| return this; |
| } |
| |
| /** |
| * Sets the ECMP selector. |
| * |
| * @param selector an integer value |
| * @return this |
| */ |
| public EcmpGroupTableSelectorBuilder withSelector(int selector) { |
| this.selector = selector; |
| return this; |
| } |
| |
| /** |
| * Returns a new extension selector. |
| * |
| * @return an extension selector |
| */ |
| public ExtensionSelector build() { |
| Bmv2HeaderTypeModel headerTypeModel = ECMP_CONTEXT.configuration().headerType(ECMP_METADATA_T); |
| int groupIdBitWidth = headerTypeModel.field(GROUP_ID).bitWidth(); |
| int selectorBitWidth = headerTypeModel.field(SELECTOR).bitWidth(); |
| |
| try { |
| ImmutableByteSequence groupIdBs = fitByteSequence(ImmutableByteSequence.copyFrom(groupId), |
| groupIdBitWidth); |
| ImmutableByteSequence selectorBs = fitByteSequence(ImmutableByteSequence.copyFrom(selector), |
| selectorBitWidth); |
| |
| Bmv2ExactMatchParam groupIdMatch = new Bmv2ExactMatchParam(groupIdBs); |
| Bmv2ExactMatchParam hashMatch = new Bmv2ExactMatchParam(selectorBs); |
| |
| return new Bmv2ExtensionSelector(ImmutableMap.of( |
| ECMP_METADATA + "." + GROUP_ID, groupIdMatch, |
| ECMP_METADATA + "." + SELECTOR, hashMatch)); |
| |
| } catch (Bmv2TranslatorUtils.ByteSequenceFitException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |