A Discrete-Event Network Simulator
API
lte-pdcp-header.cc
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1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2011 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Manuel Requena <manuel.requena@cttc.es>
19  */
20 
21 #include "ns3/log.h"
22 
23 #include "ns3/lte-pdcp-header.h"
24 
25 namespace ns3 {
26 
27 NS_LOG_COMPONENT_DEFINE ("LtePdcpHeader");
28 
29 NS_OBJECT_ENSURE_REGISTERED (LtePdcpHeader);
30 
32  : m_dcBit (0xff),
33  m_sequenceNumber (0xfffa)
34 {
35 }
36 
38 {
39  m_dcBit = 0xff;
40  m_sequenceNumber = 0xfffb;
41 }
42 
43 void
44 LtePdcpHeader::SetDcBit (uint8_t dcBit)
45 {
46  m_dcBit = dcBit & 0x01;
47 }
48 
49 void
50 LtePdcpHeader::SetSequenceNumber (uint16_t sequenceNumber)
51 {
52  m_sequenceNumber = sequenceNumber & 0x0FFF;
53 }
54 
55 uint8_t
57 {
58  return m_dcBit;
59 }
60 
61 uint16_t
63 {
64  return m_sequenceNumber;
65 }
66 
67 
68 TypeId
70 {
71  static TypeId tid = TypeId ("ns3::LtePdcpHeader")
72  .SetParent<Header> ()
73  .SetGroupName("Lte")
74  .AddConstructor<LtePdcpHeader> ()
75  ;
76  return tid;
77 }
78 
79 TypeId
81 {
82  return GetTypeId ();
83 }
84 
85 void LtePdcpHeader::Print (std::ostream &os) const
86 {
87  os << "D/C=" << (uint16_t)m_dcBit;
88  os << " SN=" << m_sequenceNumber;
89 }
90 
91 uint32_t LtePdcpHeader::GetSerializedSize (void) const
92 {
93  return 2;
94 }
95 
97 {
99 
100  i.WriteU8 ( (m_dcBit << 7) | (m_sequenceNumber & 0x0F00) >> 8 );
101  i.WriteU8 ( (m_sequenceNumber & 0x00FF) );
102 }
103 
105 {
107  uint8_t byte_1;
108  uint8_t byte_2;
109 
110  byte_1 = i.ReadU8 ();
111  byte_2 = i.ReadU8 ();
112  m_dcBit = (byte_1 & 0x80) > 7;
113  // For now, we just support DATA PDUs
115  m_sequenceNumber = ((byte_1 & 0x0F) << 8) | byte_2;
116 
117  return GetSerializedSize ();
118 }
119 
120 }; // namespace ns3
Protocol header serialization and deserialization.
Definition: header.h:42
virtual uint32_t Deserialize(Buffer::Iterator start)
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Definition: object-base.h:45
virtual void Serialize(Buffer::Iterator start) const
uint16_t m_sequenceNumber
the sequence number
def start()
Definition: core.py:1844
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file...
Definition: assert.h:67
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:202
void SetDcBit(uint8_t dcBit)
Set DC bit.
iterator in a Buffer instance
Definition: buffer.h:98
static TypeId GetTypeId(void)
Get the type ID.
virtual void Print(std::ostream &os) const
uint8_t GetDcBit() const
Get DC bit.
virtual uint32_t GetSerializedSize(void) const
Every class exported by the ns3 library is enclosed in the ns3 namespace.
uint8_t m_dcBit
the DC bit
uint16_t GetSequenceNumber() const
Get sequence number.
void WriteU8(uint8_t data)
Definition: buffer.h:869
LtePdcpHeader()
Constructor.
uint8_t ReadU8(void)
Definition: buffer.h:1021
The packet header for the Packet Data Convergence Protocol (PDCP) packets.
virtual TypeId GetInstanceTypeId(void) const
Get the most derived TypeId for this Object.
a unique identifier for an interface.
Definition: type-id.h:58
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition: type-id.cc:915
void SetSequenceNumber(uint16_t sequenceNumber)
Set sequence number.