/*******************************************************************************
 * Copyright 2014 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.
 ******************************************************************************/
/**
 * Copyright 2011, Big Switch Networks, Inc.
 * Originally created by David Erickson, Stanford University
 *
 * 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.onlab.packet;

import java.nio.ByteBuffer;

/**
 * This class represents an Link Local Control header that is used in Ethernet
 * 802.3.
 *
 *
 */
public class LLC extends BasePacket {
    private byte dsap = 0;
    private byte ssap = 0;
    private byte ctrl = 0;

    public byte getDsap() {
        return this.dsap;
    }

    public void setDsap(final byte dsap) {
        this.dsap = dsap;
    }

    public byte getSsap() {
        return this.ssap;
    }

    public void setSsap(final byte ssap) {
        this.ssap = ssap;
    }

    public byte getCtrl() {
        return this.ctrl;
    }

    public void setCtrl(final byte ctrl) {
        this.ctrl = ctrl;
    }

    @Override
    public byte[] serialize() {
        final byte[] data = new byte[3];
        final ByteBuffer bb = ByteBuffer.wrap(data);
        bb.put(this.dsap);
        bb.put(this.ssap);
        bb.put(this.ctrl);
        return data;
    }

    @Override
    public IPacket deserialize(final byte[] data, final int offset,
            final int length) {
        final ByteBuffer bb = ByteBuffer.wrap(data, offset, length);
        this.dsap = bb.get();
        this.ssap = bb.get();
        this.ctrl = bb.get();
        return this;
    }
}