org.opendaylight.protocol.pcep.spi.TlvUtil Maven / Gradle / Ivy
/*
* Copyright (c) 2014 Cisco Systems, Inc. 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.protocol.pcep.spi;
import io.netty.buffer.ByteBuf;
public final class TlvUtil {
public static final int HEADER_SIZE = 4;
public static final int PADDED_TO = 4;
private TlvUtil() {
}
public static void formatTlv(final int type,final ByteBuf body, final ByteBuf out) {
out.writeShort(type);
out.writeShort(body.writerIndex());
out.writeBytes(body);
out.writeZero(getPadding(HEADER_SIZE + body.writerIndex(), PADDED_TO));
}
public static int getPadding(final int length, final int padding) {
return (padding - length % padding) % padding;
}
}