| /* |
| * 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. |
| */ |
| package org.onosproject.net.flow.instructions; |
| |
| import static com.google.common.base.MoreObjects.toStringHelper; |
| |
| import java.util.Objects; |
| |
| import org.onlab.packet.IpAddress; |
| |
| /** |
| * Abstraction of a single traffic treatment step. |
| */ |
| public abstract class L3ModificationInstruction implements Instruction { |
| |
| /** |
| * Represents the type of traffic treatment. |
| */ |
| public enum L3SubType { |
| /** |
| * IPv4 src modification. |
| */ |
| IPV4_SRC, |
| |
| /** |
| * IPv4 dst modification. |
| */ |
| IPV4_DST, |
| |
| /** |
| * IPv6 src modification. |
| */ |
| IPV6_SRC, |
| |
| /** |
| * IPv6 dst modification. |
| */ |
| IPV6_DST, |
| |
| /** |
| * IPv6 flow label modification. |
| */ |
| IPV6_FLABEL, |
| |
| /** |
| * Decrement TTL. |
| */ |
| DEC_TTL, |
| |
| /** |
| * Copy TTL out. |
| */ |
| TTL_OUT, |
| |
| /** |
| * Copy TTL in. |
| */ |
| TTL_IN |
| |
| //TODO: remaining types |
| } |
| |
| /** |
| * Returns the subtype of the modification instruction. |
| * @return type of instruction |
| */ |
| public abstract L3SubType subtype(); |
| |
| @Override |
| public final Type type() { |
| return Type.L3MODIFICATION; |
| } |
| |
| /** |
| * Represents a L3 src/dst modification instruction. |
| */ |
| public static final class ModIPInstruction extends L3ModificationInstruction { |
| |
| private final L3SubType subtype; |
| private final IpAddress ip; |
| |
| ModIPInstruction(L3SubType subType, IpAddress addr) { |
| |
| this.subtype = subType; |
| this.ip = addr; |
| } |
| |
| @Override |
| public L3SubType subtype() { |
| return this.subtype; |
| } |
| |
| public IpAddress ip() { |
| return this.ip; |
| } |
| |
| @Override |
| public String toString() { |
| return toStringHelper(subtype().toString()) |
| .add("ip", ip).toString(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(type(), subtype(), ip); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof ModIPInstruction) { |
| ModIPInstruction that = (ModIPInstruction) obj; |
| return Objects.equals(ip, that.ip) && |
| Objects.equals(this.subtype(), that.subtype()); |
| } |
| return false; |
| } |
| } |
| |
| /** |
| * Represents a L3 IPv6 Flow Label (RFC 6437) modification instruction |
| * (20 bits unsigned integer). |
| */ |
| public static final class ModIPv6FlowLabelInstruction |
| extends L3ModificationInstruction { |
| private static final int MASK = 0xfffff; |
| private final int flowLabel; // IPv6 flow label: 20 bits |
| |
| /** |
| * Creates a new flow mod instruction. |
| * |
| * @param flowLabel the IPv6 flow label to set in the treatment (20 bits) |
| */ |
| ModIPv6FlowLabelInstruction(int flowLabel) { |
| this.flowLabel = flowLabel & MASK; |
| } |
| |
| @Override |
| public L3SubType subtype() { |
| return L3SubType.IPV6_FLABEL; |
| } |
| |
| /** |
| * Gets the IPv6 flow label to set in the treatment. |
| * |
| * @return the IPv6 flow label to set in the treatment (20 bits) |
| */ |
| public int flowLabel() { |
| return this.flowLabel; |
| } |
| |
| @Override |
| public String toString() { |
| return toStringHelper(subtype().toString()) |
| .add("flowLabel", Long.toHexString(flowLabel)).toString(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(type(), subtype(), flowLabel); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof ModIPv6FlowLabelInstruction) { |
| ModIPv6FlowLabelInstruction that = |
| (ModIPv6FlowLabelInstruction) obj; |
| return Objects.equals(flowLabel, that.flowLabel); |
| } |
| return false; |
| } |
| } |
| |
| /** |
| * Represents a L3 TTL modification instruction. |
| */ |
| public static final class ModTtlInstruction extends L3ModificationInstruction { |
| |
| private final L3SubType subtype; |
| |
| ModTtlInstruction(L3SubType subtype) { |
| this.subtype = subtype; |
| } |
| |
| @Override |
| public L3SubType subtype() { |
| return this.subtype; |
| } |
| |
| @Override |
| public String toString() { |
| return toStringHelper(subtype().toString()) |
| .toString(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(type(), subtype()); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof ModTtlInstruction) { |
| ModTtlInstruction that = (ModTtlInstruction) obj; |
| return Objects.equals(this.subtype(), that.subtype()); |
| } |
| return false; |
| } |
| } |
| } |