320 lines
11 KiB
C++
320 lines
11 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2007 INRIA
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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: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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*/
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/* taken from src/node/ipv4.h and adapted to IPv6 */
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#ifndef IPV6_H
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#define IPV6_H
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#include <stdint.h>
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#include "ns3/object.h"
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#include "ns3/socket.h"
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#include "ns3/callback.h"
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#include "ipv6-address.h"
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#include "ipv6-interface-address.h"
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namespace ns3 {
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class Node;
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class NetDevice;
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class Packet;
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class Ipv6RoutingProtocol;
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/**
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* \ingroup node
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* \defgroup ipv6 Ipv6
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*/
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/**
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* \ingroup ipv6
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* \brief Access to the IPv6 forwarding table, interfaces, and configuration
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*
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* This class defines the API to manipulate the following aspects of
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* the IPv6 implementation:
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* -# set/get an Ipv6RoutingProtocol
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* -# register a NetDevice for use by the IPv6 layer (basically, to
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* create IPv6-related state such as addressing and neighbor cache that
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* is associated with a NetDevice)
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* -# manipulate the status of the NetDevice from the IPv6 perspective,
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* such as marking it as Up or Down,
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* -# adding, deleting, and getting addresses associated to the IPv6
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* interfaces.
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* -# exporting IPv6 configuration attributes
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*
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* Each NetDevice has conceptually a single IPv6 interface associated
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* with it (the corresponding structure in the Linux IPv6 implementation
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* is struct in_device). Each interface may have one or more IPv6
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* addresses associated with it. Each IPv6 address may have different
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* subnet mask, scope, etc., so all of this per-address information
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* is stored in an Ipv6InterfaceAddress class (the corresponding
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* structure in Linux is struct in6_ifaddr)
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*
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* IPv6 attributes such as whether IP forwarding is enabled and disabled
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* are also stored in this class
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*
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* TO DO: Add API to allow access to the IPv6 neighbor table
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*
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* \see Ipv6RoutingProtocol
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* \see Ipv6InterfaceAddress
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*/
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class Ipv6 : public Object
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{
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public:
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static TypeId GetTypeId (void);
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/**
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* \brief Constructor.
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*/
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Ipv6 ();
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/**
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* \brief Destructor.
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*/
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virtual ~Ipv6 ();
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/**
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* \brief Register a new routing protocol to be used by this IPv6 stack
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*
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* This call will replace any routing protocol that has been previously
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* registered. If you want to add multiple routing protocols, you must
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* add them to a Ipv6ListRoutingProtocol directly.
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*
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* \param routingProtocol smart pointer to Ipv6RoutingProtocol object
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*/
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virtual void SetRoutingProtocol (Ptr<Ipv6RoutingProtocol> routingProtocol) = 0;
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/**
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* \brief Get the routing protocol to be used by this IPv6 stack
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*
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* \returns smart pointer to Ipv6RoutingProtocol object, or null pointer if none
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*/
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virtual Ptr<Ipv6RoutingProtocol> GetRoutingProtocol (void) const = 0;
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/**
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* \brief Add a NetDevice interface.
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*
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* Once a device has been added, it can never be removed: if you want
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* to disable it, you can invoke Ipv6::SetDown which will
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* make sure that it is never used during packet forwarding.
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* \param device device to add to the list of IPv6 interfaces
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* which can be used as output interfaces during packet forwarding.
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* \returns the index of the IPv6 interface added.
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*/
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virtual uint32_t AddInterface (Ptr<NetDevice> device) = 0;
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/**
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* \brief Get number of interfaces.
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* \returns the number of interfaces added by the user.
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*/
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virtual uint32_t GetNInterfaces (void) const = 0;
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/**
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* \brief Return the interface number of the interface that has been
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* assigned the specified IP address.
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*
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* \param address The IP address being searched for
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* \returns The interface number of the IPv6 interface with the given
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* address or -1 if not found.
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*
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* Each IP interface has one or more IP addresses associated with it.
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* This method searches the list of interfaces for one that holds a
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* particular address. This call takes an IP address as a parameter and
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* returns the interface number of the first interface that has been assigned
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* that address, or -1 if not found. There must be an exact match.
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*/
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virtual int32_t GetInterfaceForAddress (Ipv6Address address) const = 0;
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/**
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* \brief Return the interface number of first interface found that
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* has an IPv6 address within the prefix specified by the input
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* address and mask parameters
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*
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* \param address The IP address assigned to the interface of interest.
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* \param mask The IP prefix to use in the mask
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* \returns The interface number of the IPv6 interface with the given
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* address or -1 if not found.
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*
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* Each IP interface has one or more IP addresses associated with it.
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* This method searches the list of interfaces for the first one found
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* that holds an address that is included within the prefix
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* formed by the input address and mask parameters. The value -1 is
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* returned if no match is found.
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*/
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virtual int32_t GetInterfaceForPrefix (Ipv6Address address,
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Ipv6Prefix mask) const = 0;
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/**
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* \brief Get the NetDevice of the specified interface number.
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* \param interface The interface number of an IPv6 interface.
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* \returns The NetDevice associated with the IPv6 interface number.
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*/
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virtual Ptr<NetDevice> GetNetDevice (uint32_t interface) = 0;
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/**
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* \brief Get the interface index of the specified NetDevice.
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* \param device The NetDevice for an Ipv6Interface
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* \returns The interface number of an IPv6 interface or -1 if not found.
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*/
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virtual int32_t GetInterfaceForDevice (Ptr<const NetDevice> device) const = 0;
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/**
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* \brief Add an address on the specified IPv6 interface.
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* \param interface Interface number of an IPv6 interface
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* \param address Ipv6InterfaceAddress address to associate with the underlying IPv6 interface
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* \returns true if the operation succeeded
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*/
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virtual bool AddAddress (uint32_t interface, Ipv6InterfaceAddress address) = 0;
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/**
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* \brief Get number of addresses on specified IPv6 interface.
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* \param interface Interface number of an IPv6 interface
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* \returns the number of Ipv6InterfaceAddress entries for the interface.
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*/
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virtual uint32_t GetNAddresses (uint32_t interface) const = 0;
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/**
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* \brief Get IPv6 address on specified IPv6 interface.
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*
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* Because addresses can be removed, the addressIndex is not guaranteed
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* to be static across calls to this method.
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*
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* \param interface Interface number of an IPv6 interface
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* \param addressIndex index of Ipv6InterfaceAddress
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* \returns the Ipv6InterfaceAddress associated to the interface and addresIndex
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*/
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virtual Ipv6InterfaceAddress GetAddress (uint32_t interface, uint32_t addressIndex) const = 0;
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/**
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* \brief Remove an address on specified IPv6 interface.
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*
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* Remove the address at addressIndex on named interface. The addressIndex
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* for all higher indices will decrement by one after this method is called;
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* so, for example, to remove 5 addresses from an interface i, one could
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* call RemoveAddress (i, 0); 5 times.
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*
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* \param interface Interface number of an IPv6 interface
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* \param addressIndex index of Ipv6InterfaceAddress to remove
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* \returns true if the operation succeeded
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*/
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virtual bool RemoveAddress (uint32_t interface, uint32_t addressIndex) = 0;
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/**
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* \brief Set metric on specified Ipv6 interface.
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*
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* \param interface The interface number of an IPv6 interface
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* \param metric routing metric (cost) associated to the underlying
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* IPv6 interface
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*/
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virtual void SetMetric (uint32_t interface, uint16_t metric) = 0;
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/**
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* \brief Get metric for the specified IPv6 interface.
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*
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* \param interface The interface number of an IPv6 interface
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* \returns routing metric (cost) associated to the underlying
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* IPv6 interface
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*/
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virtual uint16_t GetMetric (uint32_t interface) const = 0;
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/**
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* \brief Get MTU for the specified IPv6 interface.
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* \param interface Interface number of IPv6 interface
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* \returns the Maximum Transmission Unit (in bytes) associated
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* to the underlying IPv6 interface
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*/
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virtual uint16_t GetMtu (uint32_t interface) const = 0;
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/**
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* \brief If the specified interface index is in "up" state.
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* \param interface Interface number of IPv6 interface
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* \returns true if the underlying interface is in the "up" state,
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* false otherwise.
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*/
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virtual bool IsUp (uint32_t interface) const = 0;
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/**
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* \brief Set the interface into the "up" state.
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*
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* In this state, it is considered valid during IPv6 forwarding.
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* \param interface Interface number of IPv6 interface
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*/
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virtual void SetUp (uint32_t interface) = 0;
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/**
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* \brief Set the interface into the "down" state.
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*
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* In this state, it is ignored during IPv6 forwarding.
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* \param interface Interface number of IPv6 interface
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*/
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virtual void SetDown (uint32_t interface) = 0;
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/**
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* \brief If the specified IPv6 interface has forwarding enabled.
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* \param interface Interface number of IPv6 interface
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* \returns true if IPv6 forwarding enabled for input datagrams on this device
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*/
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virtual bool IsForwarding (uint32_t interface) const = 0;
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/**
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* \brief Set forwarding on specified IPv6 interface.
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* \param interface Interface number of IPv6 interface
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* \param val Value to set the forwarding flag
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*
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* If set to true, IPv6 forwarding is enabled for input datagrams on this device
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*/
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virtual void SetForwarding (uint32_t interface, bool val) = 0;
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/**
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* \brief Register the IPv6 Extensions.
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*/
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virtual void RegisterExtensions () = 0;
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/**
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* \brief Register the IPv6 Options.
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*/
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virtual void RegisterOptions () = 0;
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/**
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* \brief Any interface magic number.
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*/
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static const uint32_t IF_ANY = 0xffffffff;
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private:
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// Indirect the IPv6 attributes through private pure virtual methods
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/**
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* \brief Set IPv6 forwarding state.
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* \param forward IPv6 forwarding enabled or not
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*/
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virtual void SetIpForward (bool forward) = 0;
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/**
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* \brief Get IPv6 forwarding state.
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* \return forwarding state (enabled or not)
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*/
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virtual bool GetIpForward (void) const = 0;
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};
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} // namespace ns3
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#endif /* IPV6_H */
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