/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */

 /*

  * Copyright (c) 2007-2008 Louis Pasteur University

  *

  * This program is free software; you can redistribute it and/or modify

  * it under the terms of the GNU General Public License version 2 as

  * published by the Free Software Foundation;

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program; if not, write to the Free Software

  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

  *

  * Author: Sebastien Vincent <vincent@clarinet.u-strasbg.fr>

  */

 #include "ns3/assert.h"

 #include "ns3/log.h"

 #include "ns3/header.h"

 #include "address-utils.h"

 #include "ipv6-header.h"

 NS_LOG_COMPONENT_DEFINE ("Ipv6Header");

 namespace ns3 {

 NS_OBJECT_ENSURE_REGISTERED (Ipv6Header);

 Ipv6Header::Ipv6Header ()

 : m_version (6),

   m_trafficClass (0),

   m_flowLabel (1),

   m_payloadLength (0),

   m_nextHeader (0),

   m_hopLimit (0)

 {

   SetSourceAddress (Ipv6Address("::"));

   SetDestinationAddress(Ipv6Address ("::"));

 }

 void Ipv6Header::SetTrafficClass (uint8_t traffic)

 {

   m_trafficClass = traffic;

 }

 uint8_t Ipv6Header::GetTrafficClass () const

 {

   return m_trafficClass;

 }

 void Ipv6Header::SetFlowLabel (uint32_t flow)

 {

   m_flowLabel = flow;

 }

 uint32_t Ipv6Header::GetFlowLabel () const

 {

   return m_flowLabel;

 }

 void Ipv6Header::SetPayloadLength (uint16_t len)

 {

   m_payloadLength = len;

 }

 uint16_t Ipv6Header::GetPayloadLength () const

 {

   return m_payloadLength;

 }

 void Ipv6Header::SetNextHeader (uint8_t next)

 {

   m_nextHeader = next;

 }

 uint8_t Ipv6Header::GetNextHeader () const

 {

   return m_nextHeader;

 }

 void Ipv6Header::SetHopLimit (uint8_t limit)

 {

   m_hopLimit = limit;

 }

 uint8_t Ipv6Header::GetHopLimit () const

 {

   return m_hopLimit;

 }

 void Ipv6Header::SetSourceAddress (Ipv6Address src)

 {

   m_sourceAddress = src;

 }

 Ipv6Address Ipv6Header::GetSourceAddress () const

 {

   return m_sourceAddress;

 }

 void Ipv6Header::SetDestinationAddress (Ipv6Address dst)

 {

   m_destinationAddress = dst;

 }

 Ipv6Address Ipv6Header::GetDestinationAddress () const

 {

   return m_destinationAddress;

 }

 TypeId Ipv6Header::GetTypeId (void)

 {

   static TypeId tid = TypeId ("ns3::Ipv6Header")

     .SetParent<Header> ()

     .AddConstructor<Ipv6Header> ()

     ;

   return tid;

 }

 TypeId Ipv6Header::GetInstanceTypeId (void) const

 {

   return GetTypeId ();

 }

 void Ipv6Header::Print (std::ostream& os) const

 {

   os << "("

     "Version " << m_version << " "

     << "Traffic class 0x" << std::hex << m_trafficClass << std::dec << " "

     << "Flow Label 0x" << std::hex << m_flowLabel << std::dec << " "

     << "Payload Length " << m_payloadLength << " "

     << "Next Header " << std::dec << (uint32_t) m_nextHeader << " "

     << "Hop Limit " << std::dec << (uint32_t)m_hopLimit << " )"

     <<  m_sourceAddress << " > " <<  m_destinationAddress

     ;

 }

 uint32_t Ipv6Header::GetSerializedSize () const

 {

   return 10 * 4;

 }

 void Ipv6Header::Serialize (Buffer::Iterator start) const

 {

   Buffer::Iterator i = start;

   uint32_t vTcFl = 0; /* version, Traffic Class and Flow Label fields */

   vTcFl= (6 << 28) | (m_trafficClass << 20) | (m_flowLabel);

   i.WriteHtonU32(vTcFl);

   i.WriteHtonU16(m_payloadLength);

   i.WriteU8(m_nextHeader);

   i.WriteU8(m_hopLimit);

   WriteTo(i, m_sourceAddress);

   WriteTo(i, m_destinationAddress);

 }

 uint32_t Ipv6Header::Deserialize (Buffer::Iterator start)

 {

   Buffer::Iterator i = start;

   uint32_t vTcFl = 0;

   vTcFl = i.ReadNtohU32();

   m_version = vTcFl >> 28;

   NS_ASSERT((m_version) == 6);

   m_trafficClass = (uint8_t)((vTcFl >> 20) & 0x000000ff);

   m_flowLabel = vTcFl & 0xfff00000;

   m_payloadLength = i.ReadNtohU16();

   m_nextHeader = i.ReadU8();

   m_hopLimit = i.ReadU8();

   ReadFrom(i, m_sourceAddress);

   ReadFrom(i, m_destinationAddress);

   return GetSerializedSize();

 }

 } /* namespace ns3 */