A Discrete-Event Network Simulator
API
ppp-header.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2008 University of Washington
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 
19 #include <iostream>
20 #include "ns3/abort.h"
21 #include "ns3/assert.h"
22 #include "ns3/log.h"
23 #include "ns3/header.h"
24 #include "ppp-header.h"
25 
26 namespace ns3 {
27 
28 NS_LOG_COMPONENT_DEFINE ("PppHeader");
29 
30 NS_OBJECT_ENSURE_REGISTERED (PppHeader);
31 
33 {
34 }
35 
37 {
38 }
39 
40 TypeId
42 {
43  static TypeId tid = TypeId ("ns3::PppHeader")
44  .SetParent<Header> ()
45  .SetGroupName ("PointToPoint")
46  .AddConstructor<PppHeader> ()
47  ;
48  return tid;
49 }
50 
51 TypeId
53 {
54  return GetTypeId ();
55 }
56 
57 void
58 PppHeader::Print (std::ostream &os) const
59 {
60  std::string proto;
61 
62  switch(m_protocol)
63  {
64  case 0x0021: /* IPv4 */
65  proto = "IP (0x0021)";
66  break;
67  case 0x0057: /* IPv6 */
68  proto = "IPv6 (0x0057)";
69  break;
70  default:
71  NS_ASSERT_MSG (false, "PPP Protocol number not defined!");
72  }
73  os << "Point-to-Point Protocol: " << proto;
74 }
75 
76 uint32_t
78 {
79  return 2;
80 }
81 
82 void
84 {
85  start.WriteHtonU16 (m_protocol);
86 }
87 
88 uint32_t
90 {
91  m_protocol = start.ReadNtohU16 ();
92  return GetSerializedSize ();
93 }
94 
95 void
96 PppHeader::SetProtocol (uint16_t protocol)
97 {
98  m_protocol=protocol;
99 }
100 
101 uint16_t
103 {
104  return m_protocol;
105 }
106 
107 
108 } // namespace ns3
Protocol header serialization and deserialization.
Definition: header.h:42
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Definition: object-base.h:45
NS_ASSERT_MSG(false, "Ipv4AddressGenerator::MaskToIndex(): Impossible")
uint16_t m_protocol
The PPP protocol type of the payload packet.
Definition: ppp-header.h:105
def start()
Definition: core.py:1855
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:204
virtual ~PppHeader()
Destroy a PPP header.
Definition: ppp-header.cc:36
iterator in a Buffer instance
Definition: buffer.h:98
Packet header for PPP.
Definition: ppp-header.h:48
void SetProtocol(uint16_t protocol)
Set the protocol type carried by this PPP packet.
Definition: ppp-header.cc:96
virtual TypeId GetInstanceTypeId(void) const
Get the TypeId of the instance.
Definition: ppp-header.cc:52
uint16_t GetProtocol(void)
Get the protocol type carried by this PPP packet.
Definition: ppp-header.cc:102
Every class exported by the ns3 library is enclosed in the ns3 namespace.
virtual uint32_t GetSerializedSize(void) const
Definition: ppp-header.cc:77
virtual void Print(std::ostream &os) const
Definition: ppp-header.cc:58
static TypeId GetTypeId(void)
Get the TypeId.
Definition: ppp-header.cc:41
virtual uint32_t Deserialize(Buffer::Iterator start)
Definition: ppp-header.cc:89
virtual void Serialize(Buffer::Iterator start) const
Definition: ppp-header.cc:83
PppHeader()
Construct a PPP header.
Definition: ppp-header.cc:32
a unique identifier for an interface.
Definition: type-id.h:58
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition: type-id.cc:915