130 lines
3.8 KiB
C++
130 lines
3.8 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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// All rights reserved.
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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_H
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#define IPV4_H
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#include <list>
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#include <stdint.h>
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#include "ipv4-address.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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/**
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* ::Send is always defined in subclasses.
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*/
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class Ipv4 {
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public:
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Ipv4(Node *node);
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virtual ~Ipv4 ();
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void SetDefaultTtl (uint8_t ttl);
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/* add route to host dest through host nextHop
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* on interface.
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*/
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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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/* add route to host dest on interface.
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*/
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void AddHostRouteTo (Ipv4Address dest,
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uint32_t interface);
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/* add route to network dest with netmask
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* through host nextHop on interface
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*/
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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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/* add route to network dest with netmask
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* on interface
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*/
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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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/* set the default route to host nextHop on
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* interface.
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*/
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void SetDefaultRoute (Ipv4Address nextHop,
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uint32_t interface);
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Ipv4Route *Lookup (Ipv4Address dest);
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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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uint32_t AddInterface (Ipv4Interface *interface);
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Ipv4Interface * GetInterface (uint32_t i);
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uint32_t GetNInterfaces (void) const;
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Ipv4Interface *FindInterfaceForDevice (NetDevice const*device);
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Ipv4* Copy(Node *node) const;
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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(Packet& p, NetDevice &device);
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void Send (Packet const &packet, Ipv4Address source,
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Ipv4Address destination, uint8_t protocol);
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private:
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void SendRealOut (Packet const &packet, Ipv4Header const &ip, Ipv4Route const &route);
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bool Forwarding (Packet const &packet, Ipv4Header &ipHeader, NetDevice &device);
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void ForwardUp (Packet p, Ipv4Header const&ip);
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typedef std::list<Ipv4Interface*> Ipv4InterfaceList;
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typedef std::list<Ipv4Route *> HostRoutes;
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typedef std::list<Ipv4Route *>::const_iterator HostRoutesCI;
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typedef std::list<Ipv4Route *>::iterator HostRoutesI;
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typedef std::list<Ipv4Route *> NetworkRoutes;
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typedef std::list<Ipv4Route *>::const_iterator NetworkRoutesCI;
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typedef std::list<Ipv4Route *>::iterator NetworkRoutesI;
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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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uint16_t m_identification;
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HostRoutes m_hostRoutes;
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NetworkRoutes m_networkRoutes;
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Ipv4Route *m_defaultRoute;
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Node *m_node;
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};
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} // Namespace ns3
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#endif
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