1 /*******************************************************************************
2 * Copyright (c) 2013, 2014 École Polytechnique de Montréal
4 * All rights reserved. This program and the accompanying materials are made
5 * available under the terms of the Eclipse Public License v1.0 which
6 * accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * Geneviève Bastien - Initial implementation and API
11 *******************************************************************************/
13 package org
.eclipse
.linuxtools
.lttng2
.kernel
.core
.event
.matching
;
15 import java
.util
.ArrayList
;
16 import java
.util
.List
;
19 import org
.eclipse
.linuxtools
.internal
.lttng2
.kernel
.core
.TcpEventStrings
;
20 import org
.eclipse
.tracecompass
.tmf
.core
.event
.ITmfEvent
;
21 import org
.eclipse
.tracecompass
.tmf
.core
.event
.ITmfEventField
;
22 import org
.eclipse
.tracecompass
.tmf
.core
.event
.TmfEventField
;
23 import org
.eclipse
.tracecompass
.tmf
.core
.event
.matching
.ITmfNetworkMatchDefinition
;
24 import org
.eclipse
.tracecompass
.tmf
.core
.event
.matching
.TmfEventMatching
.MatchingType
;
25 import org
.eclipse
.tracecompass
.tmf
.core
.event
.matching
.TmfNetworkEventMatching
.Direction
;
26 import org
.eclipse
.tracecompass
.tmf
.core
.trace
.ITmfTrace
;
27 import org
.eclipse
.tracecompass
.tmf
.core
.trace
.TmfEventTypeCollectionHelper
;
28 import org
.eclipse
.tracecompass
.tmf
.ctf
.core
.CtfTmfTrace
;
30 import com
.google
.common
.collect
.ImmutableSet
;
33 * Class to match tcp type events. This class applies to traces obtained with
34 * the full network tracepoint data available from an experimental branch of
35 * lttng-modules. This branch is often rebased on lttng-modules master and is
37 * http://git.dorsal.polymtl.ca/~gbastien?p=lttng-modules.git;a=summary
38 * net_data_experimental branch.
40 * @author Geneviève Bastien
43 public class TcpLttngEventMatching
implements ITmfNetworkMatchDefinition
{
45 private static final String
[] key_seq
= { TcpEventStrings
.TRANSPORT_FIELDS
, TcpEventStrings
.TYPE_TCP
, TcpEventStrings
.SEQ
};
46 private static final String
[] key_ackseq
= { TcpEventStrings
.TRANSPORT_FIELDS
, TcpEventStrings
.TYPE_TCP
, TcpEventStrings
.ACKSEQ
};
47 private static final String
[] key_flags
= { TcpEventStrings
.TRANSPORT_FIELDS
, TcpEventStrings
.TYPE_TCP
, TcpEventStrings
.FLAGS
};
49 private static final ImmutableSet
<String
> REQUIRED_EVENTS
= ImmutableSet
.of(
50 TcpEventStrings
.NET_DEV_QUEUE
,
51 TcpEventStrings
.NETIF_RECEIVE_SKB
);
53 private static boolean canMatchPacket(final ITmfEvent event
) {
54 TmfEventField field
= (TmfEventField
) event
.getContent();
56 String
[] tcp_data
= { TcpEventStrings
.TRANSPORT_FIELDS
, TcpEventStrings
.TYPE_TCP
};
57 ITmfEventField data
= field
.getSubField(tcp_data
);
59 return (data
.getValue() != null);
65 * The key to uniquely identify a TCP packet depends on many fields. This
66 * method computes the key for a given event.
69 * The event for which to compute the key
70 * @return the unique key for this event
73 public List
<Object
> getUniqueField(ITmfEvent event
) {
74 List
<Object
> keys
= new ArrayList
<>();
76 TmfEventField field
= (TmfEventField
) event
.getContent();
79 data
= field
.getSubField(key_seq
);
81 keys
.add(data
.getValue());
83 data
= field
.getSubField(key_ackseq
);
85 keys
.add(data
.getValue());
87 data
= field
.getSubField(key_flags
);
89 keys
.add(data
.getValue());
96 public boolean canMatchTrace(ITmfTrace trace
) {
97 if (!(trace
instanceof CtfTmfTrace
)) {
100 CtfTmfTrace ktrace
= (CtfTmfTrace
) trace
;
102 Set
<String
> traceEvents
= TmfEventTypeCollectionHelper
.getEventNames(ktrace
.getContainedEventTypes());
103 traceEvents
.retainAll(REQUIRED_EVENTS
);
104 return !traceEvents
.isEmpty();
108 public Direction
getDirection(ITmfEvent event
) {
109 String evname
= event
.getType().getName();
111 /* Is the event a tcp socket in or out event */
112 if (evname
.equals(TcpEventStrings
.NETIF_RECEIVE_SKB
) && canMatchPacket(event
)) {
114 } else if (evname
.equals(TcpEventStrings
.NET_DEV_QUEUE
) && canMatchPacket(event
)) {
115 return Direction
.OUT
;
121 public MatchingType
[] getApplicableMatchingTypes() {
122 MatchingType
[] types
= { MatchingType
.NETWORK
};