2 * Copyright (c) 2016 Cisco Systems, Inc. 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.openflowplugin.openflow.md.core.sal.convertor.match;
11 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
12 import java.util.Iterator;
13 import org.eclipse.jdt.annotation.Nullable;
14 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Dscp;
15 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.Ipv6ExthdrFlags;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.IpDscp;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.OpenflowBasicClass;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.VlanPcp;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entries.grouping.MatchEntry;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entries.grouping.MatchEntryBuilder;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.IpDscpCaseBuilder;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.VlanPcpCaseBuilder;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.ip.dscp._case.IpDscpBuilder;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.vlan.pcp._case.VlanPcpBuilder;
27 * Match related tools.
29 public final class MatchConvertorUtil {
30 // Pre-calculated masks for the 33 possible values. Do not give them out, but clone() them as they may
31 // end up being leaked and vulnerable.
32 private static final byte[][] IPV4_MASKS;
35 final byte[][] tmp = new byte[33][];
36 for (int i = 0; i <= 32; ++i) {
37 final int mask = 0xffffffff << 32 - i;
38 tmp[i] = new byte[]{(byte) (mask >>> 24), (byte) (mask >>> 16), (byte) (mask >>> 8), (byte) mask};
44 private MatchConvertorUtil() {
48 * Ipv 6 exthdr flags to int integer.
50 * @param flags ipv6 external header flag
51 * @return integer containing lower 9 bits filled with corresponding flags
53 public static Integer ipv6ExthdrFlagsToInt(final Ipv6ExthdrFlags flags) {
55 bitmap |= flags.isNonext() ? 1 : 0;
56 bitmap |= flags.isEsp() ? 1 << 1 : 0;
57 bitmap |= flags.isAuth() ? 1 << 2 : 0;
58 bitmap |= flags.isDest() ? 1 << 3 : 0;
59 bitmap |= flags.isFrag() ? 1 << 4 : 0;
60 bitmap |= flags.isRouter() ? 1 << 5 : 0;
61 bitmap |= flags.isHop() ? 1 << 6 : 0;
62 bitmap |= flags.isUnrep() ? 1 << 7 : 0;
63 bitmap |= flags.isUnseq() ? 1 << 8 : 0;
68 * Extract ipv 4 mask byte [ ].
70 * @param addressParts the address parts
71 * @return the byte [ ]
73 @SuppressFBWarnings("PZLA_PREFER_ZERO_LENGTH_ARRAYS")
74 public static byte @Nullable[] extractIpv4Mask(final Iterator<String> addressParts) {
76 if (addressParts.hasNext()) {
77 int potentionalPrefix = Integer.parseInt(addressParts.next());
78 prefix = potentionalPrefix < 32 ? potentionalPrefix : 0;
84 // clone() is necessary to protect our constants
85 return IPV4_MASKS[prefix].clone();
92 * To of ip dscp match entry.
94 * @param ipDscp the ip dscp
95 * @return the match entry
97 public static MatchEntry toOfIpDscp(final Dscp ipDscp) {
98 MatchEntryBuilder matchEntryBuilder = new MatchEntryBuilder();
99 matchEntryBuilder.setOxmClass(OpenflowBasicClass.class);
100 matchEntryBuilder.setHasMask(false);
101 matchEntryBuilder.setOxmMatchField(IpDscp.class);
103 IpDscpCaseBuilder ipDscpCaseBuilder = new IpDscpCaseBuilder();
104 IpDscpBuilder ipDscpBuilder = new IpDscpBuilder();
105 ipDscpBuilder.setDscp(ipDscp);
106 ipDscpCaseBuilder.setIpDscp(ipDscpBuilder.build());
107 matchEntryBuilder.setMatchEntryValue(ipDscpCaseBuilder.build());
108 return matchEntryBuilder.build();
112 * To of vlan pcp match entry.
114 * @param vlanPcp the vlan pcp
115 * @return the match entry
117 public static MatchEntry toOfVlanPcp(
118 final org.opendaylight.yang.gen.v1.urn.opendaylight.l2.types.rev130827.VlanPcp vlanPcp) {
119 MatchEntryBuilder matchEntryBuilder = new MatchEntryBuilder();
120 matchEntryBuilder.setOxmClass(OpenflowBasicClass.class);
121 matchEntryBuilder.setHasMask(false);
122 matchEntryBuilder.setOxmMatchField(VlanPcp.class);
123 VlanPcpCaseBuilder vlanPcpCaseBuilder = new VlanPcpCaseBuilder();
124 VlanPcpBuilder vlanPcpBuilder = new VlanPcpBuilder();
125 vlanPcpBuilder.setVlanPcp(vlanPcp.getValue());
126 vlanPcpCaseBuilder.setVlanPcp(vlanPcpBuilder.build());
127 matchEntryBuilder.setMatchEntryValue(vlanPcpCaseBuilder.build());
128 return matchEntryBuilder.build();