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/*
* Copyright 2015 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.net.flow.criteria;
import java.util.Objects;
import static com.google.common.base.MoreObjects.toStringHelper;
/**
* Implementation of TCP flags criterion (12 bits unsigned integer).
*/
public final class TcpFlagsCriterion implements Criterion {
private static final int MASK = 0xfffff;
private final int flags; // TCP flags: 12 bits
/**
* Constructor.
*
* @param flags the TCP flags to match (12 bits)
*/
TcpFlagsCriterion(int flags) {
this.flags = flags & MASK;
}
@Override
public Type type() {
return Type.TCP_FLAGS;
}
/**
* Gets the TCP flags to match.
*
* @return the TCP flags to match (12 bits)
*/
public int flags() {
return flags;
}
@Override
public String toString() {
return toStringHelper(type().toString())
.add("flags", Long.toHexString(flags)).toString();
}
@Override
public int hashCode() {
return Objects.hash(type().ordinal(), flags);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof TcpFlagsCriterion) {
TcpFlagsCriterion that = (TcpFlagsCriterion) obj;
return Objects.equals(flags, that.flags) &&
Objects.equals(this.type(), that.type());
}
return false;
}
}
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