author | Mathieu Lacage <mathieu.lacage@sophia.inria.fr> |
Tue, 11 Mar 2008 13:30:12 -0700 | |
changeset 2592 | 3ebf97150166 |
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/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */ |
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/* |
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* Copyright (c) 2005,2006,2007 INRIA |
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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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* Authors: |
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* Mathieu Lacage <mathieu.lacage@sophia.inria.fr>, |
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* Tom Henderson <tomh@tomh.org> |
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*/ |
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#ifndef IPV4_INTERFACE_H |
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#define IPV4_INTERFACE_H |
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|
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#include <list> |
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#include "ns3/ipv4-address.h" |
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#include "ns3/ptr.h" |
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#include "ns3/object.h" |
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namespace ns3 { |
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class NetDevice; |
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class Packet; |
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class TraceContext; |
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|
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/** |
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* \brief The IPv4 representation of a network interface |
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* |
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* This class roughly corresponds to the struct in_device |
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* of Linux; the main purpose is to provide address-family |
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* specific information (addresses) about an interface. |
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* |
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* This class defines two APIs: |
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* - the public API which is expected to be used by both |
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* the IPv4 layer and the user during forwarding and |
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* configuration. |
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* - the private API which is expected to be implemented |
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* by subclasses of this base class. One such subclass |
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* will be a Loopback interface which loops every |
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* packet sent back to the ipv4 layer. Another such |
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* subclass typically contains the Ipv4 <-> MAC address |
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* translation logic which will use most of the time the |
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* ARP/RARP protocols. |
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* |
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* By default, Ipv4 interface are created in the "down" state |
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* with ip address 192.168.0.1 and a matching mask. Before |
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* becoming useable, the user must invoke SetUp on them |
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* once the final Ipv4 address and mask has been set. |
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* |
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* Subclasses must implement the two methods: |
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* - Ipv4Interface::SendTo |
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*/ |
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class Ipv4Interface : public Object |
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{ |
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public: |
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/** |
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* \param nd the NetDevice associated to this Ipv4Interface. |
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* This value can be zero in which case the MTU |
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* of this interface will be 2^(16-1). |
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*/ |
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Ipv4Interface (); |
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virtual ~Ipv4Interface(); |
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/** |
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* \returns the underlying NetDevice. This method can return |
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* zero if this interface has no associated NetDevice. |
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*/ |
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virtual Ptr<NetDevice> GetDevice (void) const = 0; |
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/** |
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* \param a set the ipv4 address of this interface. |
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*/ |
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void SetAddress (Ipv4Address a); |
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/** |
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* \param mask set the ipv4 netmask of this interface. |
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*/ |
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void SetNetworkMask (Ipv4Mask mask); |
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/** |
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* \returns the broadcast ipv4 address associated to this interface |
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*/ |
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Ipv4Address GetBroadcast (void) const; |
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/** |
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* \returns the ipv4 netmask of this interface |
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*/ |
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Ipv4Mask GetNetworkMask (void) const; |
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/** |
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* \param metric configured routing metric (cost) of this interface |
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*/ |
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void SetMetric (uint16_t metric); |
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/** |
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* \returns configured routing metric (cost) of this interface |
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*/ |
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uint16_t GetMetric (void) const; |
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/** |
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* \returns the ipv4 address of this interface |
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*/ |
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Ipv4Address GetAddress (void) const; |
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/** |
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* This function a pass-through to NetDevice GetMtu, modulo |
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* the LLC/SNAP header i.e., ipv4MTU = NetDeviceMtu - LLCSNAPSIZE |
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* \returns the Maximum Transmission Unit associated to this interface. |
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*/ |
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uint16_t GetMtu (void) const; |
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|
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/** |
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* These are IP interface states and may be distinct from |
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* NetDevice states, such as found in real implementations |
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* (where the device may be down but IP interface state is still up). |
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*/ |
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/** |
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* \returns true if this interface is enabled, false otherwise. |
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*/ |
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bool IsUp (void) const; |
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/** |
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* \returns true if this interface is disabled, false otherwise. |
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*/ |
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bool IsDown (void) const; |
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/** |
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* Enable this interface |
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*/ |
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void SetUp (void); |
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/** |
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* Disable this interface |
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*/ |
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void SetDown (void); |
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|
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/** |
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* \param p packet to send |
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* \param dest next hop address of packet. |
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* |
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* This method will eventually call the private |
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* SendTo method which must be implemented by subclasses. |
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*/ |
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void Send(Ptr<Packet> p, Ipv4Address dest); |
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protected: |
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virtual void DoDispose (void); |
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private: |
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virtual void SendTo (Ptr<Packet> p, Ipv4Address dest) = 0; |
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bool m_ifup; |
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Ipv4Address m_address; |
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Ipv4Mask m_netmask; |
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uint16_t m_metric; |
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}; |
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}; // namespace ns3 |
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#endif |