org.opendaylight.openflowjava.protocol.impl.deserialization.match.OxmIpv6ExtHdrDeserializer.java Source code

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Here is the source code for org.opendaylight.openflowjava.protocol.impl.deserialization.match.OxmIpv6ExtHdrDeserializer.java

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/*
 * Copyright (c) 2013 Pantheon Technologies s.r.o. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.openflowjava.protocol.impl.deserialization.match;

import io.netty.buffer.ByteBuf;

import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.Ipv6ExthdrFlags;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.Ipv6Exthdr;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.MatchField;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.OpenflowBasicClass;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.OxmClassBase;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entries.grouping.MatchEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entries.grouping.MatchEntryBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.Ipv6ExthdrCaseBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.ipv6.exthdr._case.Ipv6ExthdrBuilder;

/**
 * @author michal.polkorab
 *
 */
public class OxmIpv6ExtHdrDeserializer extends AbstractOxmMatchEntryDeserializer
        implements OFDeserializer<MatchEntry> {

    @Override
    public MatchEntry deserialize(ByteBuf input) {
        MatchEntryBuilder builder = processHeader(getOxmClass(), getOxmField(), input);
        addIpv6ExtHdrValue(input, builder);
        return builder.build();
    }

    private static void addIpv6ExtHdrValue(ByteBuf input, MatchEntryBuilder builder) {
        Ipv6ExthdrCaseBuilder caseBuilder = new Ipv6ExthdrCaseBuilder();
        Ipv6ExthdrBuilder extHdrBuilder = new Ipv6ExthdrBuilder();
        extHdrBuilder.setPseudoField(convertPseudofields(input));
        if (builder.isHasMask()) {
            extHdrBuilder.setMask(OxmDeserializerHelper.convertMask(input, EncodeConstants.SIZE_OF_SHORT_IN_BYTES));
        }
        caseBuilder.setIpv6Exthdr(extHdrBuilder.build());
        builder.setMatchEntryValue(caseBuilder.build());
    }

    private static Ipv6ExthdrFlags convertPseudofields(ByteBuf input) {
        int bitmap = input.readUnsignedShort();
        final Boolean nonext = ((bitmap) & (1 << 0)) != 0;
        final Boolean esp = ((bitmap) & (1 << 1)) != 0;
        final Boolean auth = ((bitmap) & (1 << 2)) != 0;
        final Boolean dest = ((bitmap) & (1 << 3)) != 0;
        final Boolean frag = ((bitmap) & (1 << 4)) != 0;
        final Boolean router = ((bitmap) & (1 << 5)) != 0;
        final Boolean hop = ((bitmap) & (1 << 6)) != 0;
        final Boolean unrep = ((bitmap) & (1 << 7)) != 0;
        final Boolean unseq = ((bitmap) & (1 << 8)) != 0;
        return new Ipv6ExthdrFlags(auth, dest, esp, frag, hop, nonext, router, unrep, unseq);
    }

    @Override
    protected Class<? extends MatchField> getOxmField() {
        return Ipv6Exthdr.class;
    }

    @Override
    protected Class<? extends OxmClassBase> getOxmClass() {
        return OpenflowBasicClass.class;
    }
}