264 lines
8.6 KiB
C++
264 lines
8.6 KiB
C++
// -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*-
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//
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// Copyright (c) 2006 Georgia Tech Research Corporation
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2 as
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// published by the Free Software Foundation;
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Author: George F. Riley<riley@ece.gatech.edu>
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//
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#ifndef IPV4_L3_PROTOCOL_H
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#define IPV4_L3_PROTOCOL_H
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#include <list>
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#include <stdint.h>
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#include "ns3/ipv4-address.h"
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#include "ns3/ptr.h"
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#include "ns3/net-device.h"
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#include "ns3/ipv4.h"
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#include "ns3/traced-callback.h"
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#include "ns3/ipv4-header.h"
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#include "ipv4-static-routing.h"
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namespace ns3 {
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class Packet;
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class NetDevice;
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class Ipv4Interface;
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class Ipv4Address;
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class Ipv4Header;
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class Ipv4Route;
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class Node;
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class Socket;
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class Ipv4RawSocketImpl;
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class Ipv4L4Protocol;
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class Ipv4L4Protocol;
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class Icmpv4L4Protocol;
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/**
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* \brief Implement the Ipv4 layer.
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*
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* This is the actual implementation of IP. It contains APIs to send and
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* receive packets at the IP layer, as well as APIs for IP routing.
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*/
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class Ipv4L3Protocol : public Object
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{
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public:
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static TypeId GetTypeId (void);
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static const uint16_t PROT_NUMBER;
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Ipv4L3Protocol();
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virtual ~Ipv4L3Protocol ();
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void SetNode (Ptr<Node> node);
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Ptr<Socket> CreateRawSocket (void);
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void DeleteRawSocket (Ptr<Socket> socket);
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/**
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* \param protocol a template for the protocol to add to this L4 Demux.
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* \returns the L4Protocol effectively added.
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*
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* Invoke Copy on the input template to get a copy of the input
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* protocol which can be used on the Node on which this L4 Demux
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* is running. The new L4Protocol is registered internally as
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* a working L4 Protocol and returned from this method.
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* The caller does not get ownership of the returned pointer.
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*/
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void Insert(Ptr<Ipv4L4Protocol> protocol);
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/**
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* \param protocolNumber number of protocol to lookup
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* in this L4 Demux
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* \returns a matching L4 Protocol
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*
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* This method is typically called by lower layers
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* to forward packets up the stack to the right protocol.
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* It is also called from NodeImpl::GetUdp for example.
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*/
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Ptr<Ipv4L4Protocol> GetProtocol(int protocolNumber) const;
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/**
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* \param protocol protocol to remove from this demux.
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*
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* The input value to this method should be the value
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* returned from the Ipv4L4Protocol::Insert method.
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*/
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void Remove (Ptr<Ipv4L4Protocol> protocol);
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/**
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* \param ttl default ttl to use
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*
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* When we need to send an ipv4 packet, we use this default
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* ttl value.
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*/
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void SetDefaultTtl (uint8_t ttl);
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/**
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* \param device the device to match
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* \returns the matching interface, zero if not found.
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*
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* Try to find an Ipv4Interface whose NetDevice is equal to
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* the input NetDevice.
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*/
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Ptr<Ipv4Interface> FindInterfaceForDevice (Ptr<const NetDevice> device);
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/**
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* Lower layer calls this method after calling L3Demux::Lookup
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* The ARP subclass needs to know from which NetDevice this
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* packet is coming to:
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* - implement a per-NetDevice ARP cache
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* - send back arp replies on the right device
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*/
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void Receive( Ptr<NetDevice> device, Ptr<const Packet> p, uint16_t protocol, const Address &from,
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const Address &to, NetDevice::PacketType packetType);
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/**
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* \param packet packet to send
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* \param source source address of packet
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* \param destination address of packet
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* \param protocol number of packet
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*
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* Higher-level layers call this method to send a packet
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* down the stack to the MAC and PHY layers.
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*/
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void Send (Ptr<Packet> packet, Ipv4Address source,
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Ipv4Address destination, uint8_t protocol);
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void AddHostRouteTo (Ipv4Address dest,
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Ipv4Address nextHop,
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uint32_t interface);
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void AddHostRouteTo (Ipv4Address dest,
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uint32_t interface);
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void AddNetworkRouteTo (Ipv4Address network,
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Ipv4Mask networkMask,
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Ipv4Address nextHop,
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uint32_t interface);
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void AddNetworkRouteTo (Ipv4Address network,
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Ipv4Mask networkMask,
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uint32_t interface);
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void SetDefaultRoute (Ipv4Address nextHop,
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uint32_t interface);
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void Lookup (Ipv4Header const &ipHeader,
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Ptr<Packet> packet,
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Ipv4RoutingProtocol::RouteReplyCallback routeReply);
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uint32_t GetNRoutes (void);
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Ipv4Route *GetRoute (uint32_t i);
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void RemoveRoute (uint32_t i);
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void AddMulticastRoute (Ipv4Address origin,
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Ipv4Address group,
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uint32_t inputInterface,
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std::vector<uint32_t> outputInterfaces);
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void SetDefaultMulticastRoute (uint32_t onputInterface);
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uint32_t GetNMulticastRoutes (void) const;
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Ipv4MulticastRoute *GetMulticastRoute (uint32_t i) const;
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void RemoveMulticastRoute (Ipv4Address origin,
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Ipv4Address group,
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uint32_t inputInterface);
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void RemoveMulticastRoute (uint32_t i);
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uint32_t AddInterface (Ptr<NetDevice> device);
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Ptr<Ipv4Interface> GetInterface (uint32_t i) const;
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uint32_t GetNInterfaces (void) const;
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uint32_t FindInterfaceForAddr (Ipv4Address addr) const;
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uint32_t FindInterfaceForAddr (Ipv4Address addr, Ipv4Mask mask) const;
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int32_t FindInterfaceIndexForDevice (Ptr<NetDevice> device) const;
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void JoinMulticastGroup (Ipv4Address origin, Ipv4Address group);
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void LeaveMulticastGroup (Ipv4Address origin, Ipv4Address group);
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void SetAddress (uint32_t i, Ipv4Address address);
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void SetNetworkMask (uint32_t i, Ipv4Mask mask);
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Ipv4Mask GetNetworkMask (uint32_t t) const;
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Ipv4Address GetAddress (uint32_t i) const;
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void SetMetric (uint32_t i, uint16_t metric);
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uint16_t GetMetric (uint32_t i) const;
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bool GetIfIndexForDestination (Ipv4Address destination,
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uint32_t& ifIndex) const;
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uint16_t GetMtu (uint32_t i) const;
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bool IsUp (uint32_t i) const;
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void SetUp (uint32_t i);
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void SetDown (uint32_t i);
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void AddRoutingProtocol (Ptr<Ipv4RoutingProtocol> routingProtocol,
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int priority);
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protected:
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virtual void DoDispose (void);
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private:
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Ipv4L3Protocol(const Ipv4L3Protocol &);
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Ipv4L3Protocol &operator = (const Ipv4L3Protocol &);
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void Lookup (uint32_t ifIndex,
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Ipv4Header const &ipHeader,
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Ptr<Packet> packet,
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Ipv4RoutingProtocol::RouteReplyCallback routeReply);
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void SendRealOut (bool found,
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Ipv4Route const &route,
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Ptr<Packet> packet,
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Ipv4Header const &ipHeader);
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bool Forwarding (uint32_t ifIndex,
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Ptr<Packet> packet,
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Ipv4Header &ipHeader,
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Ptr<NetDevice> device);
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void ForwardUp (Ptr<Packet> p, Ipv4Header const&ip, Ptr<Ipv4Interface> incomingInterface);
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uint32_t AddIpv4Interface (Ptr<Ipv4Interface> interface);
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void SetupLoopback (void);
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Ptr<Icmpv4L4Protocol> GetIcmp (void) const;
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bool IsUnicast (Ipv4Address ad, Ipv4Mask interfaceMask) const;
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void DoForward (uint32_t ifIndex,
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Ptr<Packet> packet,
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Ipv4Header ipHeader);
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typedef std::list<Ptr<Ipv4Interface> > Ipv4InterfaceList;
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typedef std::list<std::pair<Ipv4Address, Ipv4Address> > Ipv4MulticastGroupList;
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typedef std::list< std::pair< int, Ptr<Ipv4RoutingProtocol> > > Ipv4RoutingProtocolList;
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typedef std::list<Ptr<Ipv4RawSocketImpl> > SocketList;
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typedef std::list<Ptr<Ipv4L4Protocol> > L4List_t;
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L4List_t m_protocols;
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Ipv4InterfaceList m_interfaces;
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uint32_t m_nInterfaces;
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uint8_t m_defaultTtl;
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bool m_calcChecksum;
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uint16_t m_identification;
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Ptr<Node> m_node;
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TracedCallback<Ptr<const Packet>, uint32_t> m_txTrace;
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TracedCallback<Ptr<const Packet>, uint32_t> m_rxTrace;
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TracedCallback<Ptr<const Packet> > m_dropTrace;
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Ipv4RoutingProtocolList m_routingProtocols;
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Ptr<Ipv4StaticRouting> m_staticRouting;
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Ipv4MulticastGroupList m_multicastGroups;
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SocketList m_sockets;
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};
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} // Namespace ns3
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#endif /* IPV4_L3_PROTOCOL_H */
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