A Discrete-Event Network Simulator
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llc-snap-header.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2005 INRIA
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: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
19  */
20 
21 #include "llc-snap-header.h"
22 #include "ns3/assert.h"
23 #include <string>
24 
25 namespace ns3 {
26 
27 NS_OBJECT_ENSURE_REGISTERED (LlcSnapHeader);
28 
29 LlcSnapHeader::LlcSnapHeader ()
30 {
31 }
32 
33 void
34 LlcSnapHeader::SetType (uint16_t type)
35 {
36  m_etherType = type;
37 }
38 uint16_t
39 LlcSnapHeader::GetType (void)
40 {
41  return m_etherType;
42 }
43 
44 uint32_t
45 LlcSnapHeader::GetSerializedSize (void) const
46 {
47  return LLC_SNAP_HEADER_LENGTH;
48 }
49 
50 TypeId
51 LlcSnapHeader::GetTypeId (void)
52 {
53  static TypeId tid = TypeId ("ns3::LlcSnapHeader")
54  .SetParent<Header> ()
55  .AddConstructor<LlcSnapHeader> ()
56  ;
57  return tid;
58 }
59 TypeId
60 LlcSnapHeader::GetInstanceTypeId (void) const
61 {
62  return GetTypeId ();
63 }
64 void
65 LlcSnapHeader::Print (std::ostream &os) const
66 {
67  os << "type 0x";
68  os.setf (std::ios::hex, std::ios::basefield);
69  os << m_etherType;
70  os.setf (std::ios::dec, std::ios::basefield);
71 }
72 
73 void
74 LlcSnapHeader::Serialize (Buffer::Iterator start) const
75 {
76  Buffer::Iterator i = start;
77  uint8_t buf[] = { 0xaa, 0xaa, 0x03, 0, 0, 0};
78  i.Write (buf, 6);
79  i.WriteHtonU16 (m_etherType);
80 }
81 uint32_t
82 LlcSnapHeader::Deserialize (Buffer::Iterator start)
83 {
84  Buffer::Iterator i = start;
85  i.Next (5+1);
86  m_etherType = i.ReadNtohU16 ();
87  return GetSerializedSize ();
88 }
89 
90 
91 } // namespace ns3