| /* |
| * Copyright 2016-present Open Networking Foundation |
| * |
| * 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; |
| |
| /** |
| * Represents the deprecated IPv4 IP precedence. |
| * IP precedence occupied the 3 most-significant bits of the IPv4 ToS field |
| */ |
| public enum IPPrecedence { |
| |
| BEST_EFFORT((short) 0b000), |
| PRIORITY((short) 0b001), |
| IMMEDIATE((short) 0b010), |
| FLASH((short) 0b011), |
| FLASH_OVERRIDE((short) 0b100), |
| CRITICAL((short) 0b101), |
| INTERNETWORK_CONTROL((short) 0b110), |
| NETWORK_CONTROL((short) 0b111); |
| |
| private short value; |
| |
| IPPrecedence(short value) { |
| this.value = value; |
| } |
| |
| /** |
| * Returns the IP precedence Enum corresponding to the specified short. |
| * |
| * @param value the short value of the IP precedence |
| * @return the IP precedence Enum corresponding to the specified short |
| * @throws IllegalArgumentException if the short provided does not correspond to an IP precedence Enum value |
| */ |
| public static IPPrecedence fromShort(short value) { |
| for (IPPrecedence b : IPPrecedence.values()) { |
| if (value == b.value) { |
| return b; |
| } |
| } |
| throw new IllegalArgumentException("IP precedence " + value + " is not valid"); |
| } |
| |
| /** |
| * Returns the short value of this IP precedence Enum. |
| * |
| * @return the short value of this IP precedence Enum |
| */ |
| public short getValue() { |
| return value; |
| } |
| } |