/* | |
* Copyright 2015 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.pcepio.types; | |
import java.util.Objects; | |
import org.jboss.netty.buffer.ChannelBuffer; | |
import org.onosproject.pcepio.protocol.PcepNai; | |
import org.onosproject.pcepio.protocol.PcepVersion; | |
import org.slf4j.Logger; | |
import org.slf4j.LoggerFactory; | |
import com.google.common.base.MoreObjects; | |
/** | |
* Provides SrEroSubObject. | |
*/ | |
public class SrEroSubObject implements PcepValueType { | |
/* | |
SR-ERO subobject: (draft-ietf-pce-segment-routing-00) | |
0 1 2 3 | |
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
|L| Type | Length | ST | Flags |F|S|C|M| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| SID | | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
// NAI (variable) // | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
NAI | |
0 1 2 3 | |
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| Local IPv4 address | | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| Remote IPv4 address | | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
NAI for IPv4 Adjacency | |
0 1 2 3 | |
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
// Local IPv6 address (16 bytes) // | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
// Remote IPv6 address (16 bytes) // | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
NAI for IPv6 adjacency | |
0 1 2 3 | |
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| Local Node-ID | | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| Local Interface ID | | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| Remote Node-ID | | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| Remote Interface ID | | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
NAI for Unnumbered adjacency with IPv4 Node IDs | |
*/ | |
protected static final Logger log = LoggerFactory.getLogger(SrEroSubObject.class); | |
public static final short TYPE = 0x60; //TODO : type to be defined | |
public static final short LENGTH = 12; | |
public static final short VALUE_LENGTH = 10; | |
public static final int SET = 1; | |
public static final byte MFLAG_SET = 0x01; | |
public static final byte CFLAG_SET = 0x02; | |
public static final byte SFLAG_SET = 0x04; | |
public static final byte FFLAG_SET = 0x08; | |
public static final byte SHIFT_ST = 12; | |
private final boolean bFFlag; | |
private final boolean bSFlag; | |
private final boolean bCFlag; | |
private final boolean bMFlag; | |
private final byte st; | |
private final int sID; | |
private final PcepNai nai; | |
/** | |
* Constructor to initialize member variables. | |
* | |
* @param st SID type | |
* @param bFFlag F flag | |
* @param bSFlag S flag | |
* @param bCFlag C flag | |
* @param bMFlag M flag | |
* @param sID segment identifier value | |
* @param nai NAI associated with SID | |
*/ | |
public SrEroSubObject(byte st, boolean bFFlag, boolean bSFlag, boolean bCFlag, boolean bMFlag, int sID, | |
PcepNai nai) { | |
this.st = st; | |
this.bFFlag = bFFlag; | |
this.bSFlag = bSFlag; | |
this.bCFlag = bCFlag; | |
this.bMFlag = bMFlag; | |
this.sID = sID; | |
this.nai = nai; | |
} | |
/** | |
* Creates object of SrEroSubObject. | |
* | |
* @param st SID type | |
* @param bFFlag F flag | |
* @param bSFlag S flag | |
* @param bCFlag C flag | |
* @param bMFlag M flag | |
* @param sID segment identifier value | |
* @param nai NAI associated with SID | |
* @return object of SrEroSubObject | |
*/ | |
public static SrEroSubObject of(byte st, boolean bFFlag, boolean bSFlag, boolean bCFlag, boolean bMFlag, int sID, | |
PcepNai nai) { | |
return new SrEroSubObject(st, bFFlag, bSFlag, bCFlag, bMFlag, sID, nai); | |
} | |
/** | |
* Returns SID type. | |
* @return st sid type | |
*/ | |
public byte getSt() { | |
return st; | |
} | |
/** | |
* Returns bFFlag. | |
* @return bFFlag | |
*/ | |
public boolean getFFlag() { | |
return bFFlag; | |
} | |
/** | |
* Returns bSFlag. | |
* @return bSFlag | |
*/ | |
public boolean getSFlag() { | |
return bSFlag; | |
} | |
/** | |
* Returns bCFlag. | |
* @return bCFlag | |
*/ | |
public boolean getCFlag() { | |
return bCFlag; | |
} | |
/** | |
* Returns bMFlag. | |
* @return bMFlag | |
*/ | |
public boolean getMFlag() { | |
return bMFlag; | |
} | |
/** | |
* Returns sID. | |
* @return sID | |
*/ | |
public int getSID() { | |
return sID; | |
} | |
/** | |
* Returns nai. | |
* @return nai | |
*/ | |
public PcepNai getNai() { | |
return nai; | |
} | |
@Override | |
public PcepVersion getVersion() { | |
return PcepVersion.PCEP_1; | |
} | |
@Override | |
public short getType() { | |
return TYPE; | |
} | |
@Override | |
public short getLength() { | |
return LENGTH; | |
} | |
@Override | |
public int hashCode() { | |
return Objects.hash(st, bFFlag, bSFlag, bCFlag, bMFlag, sID, nai); | |
} | |
@Override | |
public boolean equals(Object obj) { | |
if (this == obj) { | |
return true; | |
} | |
if (obj instanceof SrEroSubObject) { | |
SrEroSubObject other = (SrEroSubObject) obj; | |
return Objects.equals(this.st, other.st) && Objects.equals(this.bFFlag, other.bFFlag) | |
&& Objects.equals(this.bSFlag, other.bSFlag) && Objects.equals(this.bCFlag, other.bCFlag) | |
&& Objects.equals(this.bMFlag, other.bMFlag) && Objects.equals(this.sID, other.sID) | |
&& Objects.equals(this.nai, other.nai); | |
} | |
return false; | |
} | |
@Override | |
public int write(ChannelBuffer c) { | |
int iLenStartIndex = c.writerIndex(); | |
c.writeShort(TYPE); | |
c.writeShort(LENGTH); | |
short temp = 0; | |
if (bMFlag) { | |
temp = (short) (temp | MFLAG_SET); | |
} | |
if (bCFlag) { | |
temp = (short) (temp | CFLAG_SET); | |
} | |
if (bSFlag) { | |
temp = (short) (temp | SFLAG_SET); | |
} | |
if (bFFlag) { | |
temp = (short) (temp | FFLAG_SET); | |
} | |
short tempST = (short) (st << SHIFT_ST); | |
temp = (short) (temp | tempST); | |
c.writeShort(temp); | |
c.writeInt(sID); | |
nai.write(c); | |
return c.writerIndex() - iLenStartIndex; | |
} | |
/** | |
* Reads the channel buffer and returns object of SrEroSubObject. | |
* @param c of type channel buffer | |
* @return object of SrEroSubObject | |
*/ | |
public static PcepValueType read(ChannelBuffer c) { | |
short temp = c.readShort(); | |
boolean bMFlag; | |
boolean bCFlag; | |
boolean bSFlag; | |
boolean bFFlag; | |
byte st; | |
PcepNai nai = null; | |
bMFlag = (temp & MFLAG_SET) == MFLAG_SET ? true : false; | |
bCFlag = (temp & CFLAG_SET) == CFLAG_SET ? true : false; | |
bSFlag = (temp & SFLAG_SET) == SFLAG_SET ? true : false; | |
bFFlag = (temp & FFLAG_SET) == FFLAG_SET ? true : false; | |
st = (byte) (temp >> SHIFT_ST); | |
int sID = c.readInt(); | |
switch (st) { | |
case 0x01: | |
nai = PcepNaiIpv4NodeId.read(c); | |
break; | |
case 0x02: | |
nai = PcepNaiIpv6NodeId.read(c); | |
break; | |
case 0x03: | |
nai = PcepNaiIpv4Adjacency.read(c); | |
break; | |
case 0x04: | |
nai = PcepNaiIpv6Adjacency.read(c); | |
break; | |
case 0x05: | |
nai = PcepNaiUnnumberedAdjacencyIpv4.read(c); | |
break; | |
default: | |
nai = null; | |
break; | |
} | |
return new SrEroSubObject(st, bFFlag, bSFlag, bCFlag, bMFlag, sID, nai); | |
} | |
@Override | |
public String toString() { | |
return MoreObjects.toStringHelper(getClass()) | |
.add("Type", TYPE) | |
.add("Length", LENGTH) | |
.add("st", st) | |
.add("bFflag", bFFlag) | |
.add("bSFlag", bSFlag) | |
.add("bCFlag", bCFlag) | |
.add("bMFlag", bMFlag) | |
.add("sID", sID) | |
.add("nAI", nai) | |
.toString(); | |
} | |
} |