2 * Copyright (c) 2013 Pantheon Technologies s.r.o. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.openflowjava.protocol.impl.util;
11 import io.netty.buffer.ByteBuf;
13 import java.util.ArrayList;
14 import java.util.List;
16 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Address;
17 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev100924.MacAddress;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.FlowWildcardsV10;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.match.v10.grouping.MatchV10;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.match.v10.grouping.MatchV10Builder;
22 import com.google.common.base.Joiner;
25 * Deserializes ofp_match (OpenFlow v1.0) structure
26 * @author michal.polkorab
28 public abstract class OF10MatchDeserializer {
30 private static final byte PADDING_IN_MATCH = 1;
31 private static final byte PADDING_IN_MATCH_2 = 2;
32 private static final byte NW_SRC_BITS = 6;
33 private static final byte NW_SRC_SHIFT = 8;
34 private static final int NW_SRC_MASK = ((1 << NW_SRC_BITS) - 1) << NW_SRC_SHIFT;
35 private static final byte NW_DST_BITS = 6;
36 private static final byte NW_DST_SHIFT = 14;
37 private static final int NW_DST_MASK = ((1 << NW_DST_BITS) - 1) << NW_DST_SHIFT;
40 * Creates ofp_match (OpenFlow v1.0) structure
41 * @param rawMessage ByteBuf with input data
42 * @return ofp_match (OpenFlow v1.0)
44 public static MatchV10 createMatchV10(ByteBuf rawMessage) {
45 MatchV10Builder builder = new MatchV10Builder();
46 long wildcards = rawMessage.readUnsignedInt();
47 builder.setWildcards(createWildcards(wildcards));
48 builder.setNwSrcMask(decodeNwSrcMask(wildcards));
49 builder.setNwDstMask(decodeNwDstMask(wildcards));
50 builder.setInPort(rawMessage.readUnsignedShort());
51 byte[] dlSrc = new byte[EncodeConstants.MAC_ADDRESS_LENGTH];
52 rawMessage.readBytes(dlSrc);
53 builder.setDlSrc(new MacAddress(ByteBufUtils.macAddressToString(dlSrc)));
54 byte[] dlDst = new byte[EncodeConstants.MAC_ADDRESS_LENGTH];
55 rawMessage.readBytes(dlDst);
56 builder.setDlDst(new MacAddress(ByteBufUtils.macAddressToString(dlDst)));
58 builder.setDlVlan(rawMessage.readUnsignedShort());
59 builder.setDlVlanPcp(rawMessage.readUnsignedByte());
60 rawMessage.skipBytes(PADDING_IN_MATCH);
61 builder.setDlType(rawMessage.readUnsignedShort());
62 builder.setNwTos(rawMessage.readUnsignedByte());
63 builder.setNwProto(rawMessage.readUnsignedByte());
64 rawMessage.skipBytes(PADDING_IN_MATCH_2);
65 List<String> srcGroups = new ArrayList<>();
66 for (int i = 0; i < EncodeConstants.GROUPS_IN_IPV4_ADDRESS; i++) {
67 srcGroups.add(Short.toString(rawMessage.readUnsignedByte()));
69 Joiner joiner = Joiner.on(".");
70 builder.setNwSrc(new Ipv4Address(joiner.join(srcGroups)));
71 List<String> dstGroups = new ArrayList<>();
72 for (int i = 0; i < EncodeConstants.GROUPS_IN_IPV4_ADDRESS; i++) {
73 dstGroups.add(Short.toString(rawMessage.readUnsignedByte()));
75 builder.setNwDst(new Ipv4Address(joiner.join(dstGroups)));
76 builder.setTpSrc(rawMessage.readUnsignedShort());
77 builder.setTpDst(rawMessage.readUnsignedShort());
78 return builder.build();
82 * Decodes FlowWildcards
83 * @param input input ByteBuf
84 * @return decoded FlowWildcardsV10
86 public static FlowWildcardsV10 createWildcards(long input) {
87 boolean _iNPORT = (input & (1 << 0)) != 0;
88 boolean _dLVLAN = (input & (1 << 1)) != 0;
89 boolean _dLSRC = (input & (1 << 2)) != 0;
90 boolean _dLDST = (input & (1 << 3)) != 0;
91 boolean _dLTYPE = (input & (1 << 4)) != 0;
92 boolean _nWPROTO = (input & (1 << 5)) != 0;
93 boolean _tPSRC = (input & (1 << 6)) != 0;
94 boolean _tPDST = (input & (1 << 7)) != 0;
95 boolean _dLVLANPCP = (input & (1 << 20)) != 0;
96 boolean _nWTOS = (input & (1 << 21)) != 0;
97 return new FlowWildcardsV10(_dLDST, _dLSRC, _dLTYPE, _dLVLAN,
98 _dLVLANPCP, _iNPORT, _nWPROTO, _nWTOS, _tPDST, _tPSRC);
102 * Decodes NwSrcMask from FlowWildcards (represented as uint32)
103 * @param input binary FlowWildcards
104 * @return decoded NwSrcMask
106 public static short decodeNwSrcMask(long input) {
107 return (short) Math.max(32 - ((input & NW_SRC_MASK) >> NW_SRC_SHIFT), 0);
111 * Decodes NwDstMask from FlowWildcards (represented as uint32)
112 * @param input binary FlowWildcards
113 * @return decoded NwDstMask
115 public static short decodeNwDstMask(long input) {
116 return (short) Math.max(32 - ((input & NW_DST_MASK) >> NW_DST_SHIFT), 0);