diff --git a/src/network/utils/sll-header.cc b/src/network/utils/sll-header.cc new file mode 100644 index 00000000000..f814792dceb --- /dev/null +++ b/src/network/utils/sll-header.cc @@ -0,0 +1,119 @@ +/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ +/* + * Copyright (c) 2015 Université Pierre et Marie Curie + * + * 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: Matthieu Coudron + */ +#include "sll-header.h" +#include "ns3/log.h" + + +namespace ns3 { + +NS_LOG_COMPONENT_DEFINE ("SllHeader"); + +NS_OBJECT_ENSURE_REGISTERED (SllHeader); + +SllHeader::SllHeader () + : m_packetType (UNICAST_FROM_PEER_TO_ME), + m_arphdType (0), + m_addressLength (0), + m_address (0), + m_protocolType (0) +{ + NS_LOG_FUNCTION (this); +} + +SllHeader::~SllHeader () +{ + NS_LOG_FUNCTION (this); +} + + +TypeId +SllHeader::GetTypeId (void) +{ + static TypeId tid = TypeId ("ns3::SllHeader") + .SetParent
() + .SetGroupName ("Network") + .AddConstructor () + ; + return tid; +} + +TypeId +SllHeader::GetInstanceTypeId (void) const +{ + return GetTypeId (); +} + +uint16_t +SllHeader::GetArpType () const +{ + return m_arphdType; +} + +void +SllHeader::SetArpType (uint16_t arphdType) +{ + NS_LOG_FUNCTION (arphdType); + m_arphdType = arphdType; +} + +void +SllHeader::SetPacketType (PacketType type) +{ + NS_LOG_FUNCTION (type); + m_packetType = type; +} + +void +SllHeader::Print (std::ostream &os) const +{ + os << "SLLHeader packetType=" << m_packetType << " protocol=" << m_protocolType; +} + +uint32_t +SllHeader::GetSerializedSize (void) const +{ + return 2 + 2 + 2 + 8 + 2; +} + +void +SllHeader::Serialize (Buffer::Iterator start) const +{ + Buffer::Iterator i = start; + i.WriteHtonU16 (m_packetType); + i.WriteHtonU16 (m_arphdType); + i.WriteHtonU16 (m_addressLength); + i.WriteHtonU64 (m_address); + i.WriteHtonU16 (m_protocolType); +} + +uint32_t +SllHeader::Deserialize (Buffer::Iterator start) +{ + Buffer::Iterator i = start; + m_packetType = static_cast (i.ReadNtohU16 ()); + m_arphdType = i.ReadNtohU16 (); + m_addressLength = i.ReadNtohU16 (); + m_address = i.ReadNtohU64 (); + m_protocolType = i.ReadNtohU16 (); + + return GetSerializedSize (); +} + +} diff --git a/src/network/utils/sll-header.h b/src/network/utils/sll-header.h new file mode 100644 index 00000000000..2aac44bea39 --- /dev/null +++ b/src/network/utils/sll-header.h @@ -0,0 +1,128 @@ +/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ +/* + * Copyright (c) 2015 Université Pierre et Marie Curie + * + * 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: Matthieu Coudron + */ +#ifndef SLL_HEADER_H +#define SLL_HEADER_H + +#include "ns3/buffer.h" +#include "ns3/header.h" +#include + +namespace ns3 { + +/** + * \ingroup packet + * + * \brief Protocol header serialization and deserialization. + * + * Libpcap sometimes add an additional header to provide information that would be + * lost otherwise due to the link-layer/capture mechanism, for instance when capturing from + * "nlmon" device on linux + * + * \see http://www.tcpdump.org/linktypes/LINKTYPE_LINUX_SLL.html + * \see https://wiki.wireshark.org/SLL + * + * \verbatim + * +---------------------------+ + * | Packet type | + * | (2 Octets) | + * +---------------------------+ + * | ARPHRD_ type | + * | (2 Octets) | + * +---------------------------+ + * | Link-layer address length | + * | (2 Octets) | + * +---------------------------+ + * | Link-layer address | + * | (8 Octets) | + * +---------------------------+ + * | Protocol type | + * | (2 Octets) | + * +---------------------------+ + * | Payload | + * . . + * . . + * . . + * \endverbatim + */ +class SllHeader : public Header +{ +public: + enum PacketType + { + UNICAST_FROM_PEER_TO_ME = 0, /**< the packet was specifically sent to us by somebody else */ + BROADCAST_BY_PEER = 1, /**< packet was broadcast by somebody else */ + MULTICAST_BY_PEER = 2, /**< packet was multicast, but not broadcast, by somebody else */ + INTERCEPTED_PACKET = 3, /**< packet was sent to somebody else by somebody else **/ + SENT_BY_US /**< the packet was sent by us */ + }; + + /** + * \brief Get the type ID. + * \return the object TypeId + */ + static TypeId GetTypeId (void); + TypeId GetInstanceTypeId (void) const; + + SllHeader (); + virtual ~SllHeader (); + + /** + * The ARPHRD_ type field is in network byte order; it contains a Linux ARPHRD_ value for the link-layer device type. + */ + uint16_t GetArpType () const; + + /** + * \return Packet type + */ + PacketType GetPacketType () const; + + /** + * \param arphw ARP protocol hardware identifier + */ + void SetArpType (uint16_t arphdType); + + /** + * \param type Depends on source and address of the packet + */ + void SetPacketType (PacketType type); + + //! Inherited + virtual uint32_t GetSerializedSize (void) const; + virtual void Serialize (Buffer::Iterator start) const; + virtual uint32_t Deserialize (Buffer::Iterator start); + + virtual void Print (std::ostream &os) const; + +protected: + // declared in packet order + PacketType m_packetType; + uint16_t m_arphdType; /**< ARP protocol hardware identifier */ + uint16_t m_addressLength; + uint64_t m_address; + uint16_t m_protocolType; +}; + + + +std::ostream & operator << (std::ostream &os, const SllHeader &header); + +} // namespace ns3 + +#endif /* SLL_HEADER_H */ diff --git a/src/network/wscript b/src/network/wscript index ebd9e8b2c31..15d4c1eb729 100644 --- a/src/network/wscript +++ b/src/network/wscript @@ -53,6 +53,7 @@ def build(bld): 'utils/red-queue.cc', 'utils/simple-channel.cc', 'utils/simple-net-device.cc', + 'utils/sll-header.cc', 'utils/packet-socket-client.cc', 'utils/packet-socket-server.cc', 'utils/packet-data-calculators.cc', @@ -138,6 +139,7 @@ def build(bld): 'utils/sgi-hashmap.h', 'utils/simple-channel.h', 'utils/simple-net-device.h', + 'utils/sll-header.h', 'utils/packet-socket-client.h', 'utils/packet-socket-server.h', 'utils/pcap-test.h',