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flame-header.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2009 IITP RAS
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: Kirill Andreev <andreev@iitp.ru>
19  */
20 #include "ns3/assert.h"
21 #include "ns3/address-utils.h"
22 #include "ns3/packet.h"
23 
24 #include "flame-header.h"
25 
26 namespace ns3 {
27 namespace flame {
28 
29 NS_OBJECT_ENSURE_REGISTERED (FlameHeader);
30 
31 FlameHeader::FlameHeader () :
32  m_cost (0), m_seqno (0), m_origDst (Mac48Address ()), m_origSrc (Mac48Address ())
33 {
34 }
35 FlameHeader::~FlameHeader ()
36 {
37 }
38 TypeId
39 FlameHeader::GetTypeId (void)
40 {
41  static TypeId tid = TypeId ("ns3::flame::FlameHeader")
42  .SetParent<Header> ()
43  .AddConstructor<FlameHeader> ();
44  return tid;
45 }
46 TypeId
47 FlameHeader::GetInstanceTypeId (void) const
48 {
49  return GetTypeId ();
50 }
51 void
52 FlameHeader::Print (std::ostream &os) const
53 {
54  os << "Cost = " << (uint16_t) m_cost << std::endl << "Sequence number = " << m_seqno
55  << std::endl << "Orig Destination = " << m_origDst << std::endl << "Orig Source = " << m_origSrc << std::endl;
56 }
57 uint32_t
58 FlameHeader::GetSerializedSize (void) const
59 {
60  return 1 // Reserved
61  + 1 // Cost
62  + 2 // Seqno
63  + 6 // Orig Dst
64  + 6 // Orig Src
65  + 2 // Flame Port
66  ;
67 }
68 void
69 FlameHeader::Serialize (Buffer::Iterator start) const
70 {
71  Buffer::Iterator i = start;
72  i.WriteU8 (0); //Reserved
73  i.WriteU8 (m_cost); //Cost
74  i.WriteHtonU16 (m_seqno); //Seqno
75  WriteTo (i, m_origDst);
76  WriteTo (i, m_origSrc);
77  i.WriteHtonU16 (m_protocol);
78 }
79 uint32_t
80 FlameHeader::Deserialize (Buffer::Iterator start)
81 {
82  Buffer::Iterator i = start;
83  i.Next (1);
84  m_cost = i.ReadU8 ();
85  m_seqno = i.ReadNtohU16 ();
86  ReadFrom (i, m_origDst);
87  ReadFrom (i, m_origSrc);
88  m_protocol = i.ReadNtohU16 ();
89  return i.GetDistanceFrom (start);
90 }
91 void
92 FlameHeader::AddCost (uint8_t cost)
93 {
94  m_cost = (((uint16_t) cost + (uint16_t) m_cost) > 255) ? 255 : cost + m_cost;
95 }
96 uint8_t
97 FlameHeader::GetCost () const
98 {
99  return m_cost;
100 }
101 void
102 FlameHeader::SetSeqno (uint16_t seqno)
103 {
104  m_seqno = seqno;
105 }
106 uint16_t
107 FlameHeader::GetSeqno () const
108 {
109  return m_seqno;
110 }
111 void
112 FlameHeader::SetOrigDst (Mac48Address dst)
113 {
114  m_origDst = dst;
115 }
116 Mac48Address
117 FlameHeader::GetOrigDst () const
118 {
119  return m_origDst;
120 }
121 void
122 FlameHeader::SetOrigSrc (Mac48Address src)
123 {
124  m_origSrc = src;
125 }
126 Mac48Address
127 FlameHeader::GetOrigSrc () const
128 {
129  return m_origSrc;
130 }
131 void
132 FlameHeader::SetProtocol (uint16_t protocol)
133 {
134  m_protocol = protocol;
135 }
136 uint16_t
137 FlameHeader::GetProtocol () const
138 {
139  return m_protocol;
140 }
141 bool
142 operator== (const FlameHeader & a, const FlameHeader & b)
143 {
144  return ((a.m_cost == b.m_cost) && (a.m_seqno == b.m_seqno) && (a.m_origDst == b.m_origDst) && (a.m_origSrc
145  == b.m_origSrc) && (a.m_protocol == b.m_protocol));
146 }
147 
148 } // namespace flame
149 } // namespace ns3