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// -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-
// Copyright (c) 2001-2009 XORP, Inc.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, Version 2, June
// 1991 as published by the Free Software Foundation. Redistribution
// and/or modification of this program under the terms of any other
// version of the GNU General Public License is not permitted.
//
// 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. For more details,
// see the GNU General Public License, Version 2, a copy of which can be
// found in the XORP LICENSE.gpl file.
//
// XORP Inc, 2953 Bunker Hill Lane, Suite 204, Santa Clara, CA 95054, USA;
// http://xorp.net
// $XORP: xorp/pim/pim_mrib_table.hh,v 1.16 2009/01/05 18:31:02 jtc Exp $
#ifndef __PIM_PIM_MRIB_TABLE_HH__
#define __PIM_PIM_MRIB_TABLE_HH__
//
// PIM Multicast Routing Information Base Table header file.
//
#include <list>
#include "libxorp/timer.hh"
#include "mrt/mrib_table.hh"
//
// Constants definitions
//
//
// Structures/classes, typedefs and macros
//
class IPvXNet;
class PimMrt;
class PimNode;
// PIM-specific Multicast Routing Information Base Table
/**
* @short PIM-specific Multicast Routing Information Base Table
*/
class PimMribTable : public MribTable {
public:
/**
* Constructor.
*
* @param pim_node the PimNode this table belongs to.
*/
PimMribTable(PimNode& pim_node);
/**
* Destructor.
*/
virtual ~PimMribTable();
// Redirection functions (to the pim_node)
/**
* Get the PimNode this table belongs to.
*
* @return the PimNode this table belongs to.
* @see PimTable.
*/
PimNode& pim_node() const { return (_pim_node); }
/**
* Get the address family.
*
* @return the address family (AF_INET or AF_INET6 for
* IPv4 and IPv6 respectively).
*/
int family();
/**
* Get the corresponding PIM Multicast Routing Table.
*
* @return the corresponding PIM Multicast Routing Table.
* @see PimMrt.
*/
PimMrt& pim_mrt();
/**
* Clear the table by removing all entries.
*/
void clear();
/**
* Search the table and find the corresponding Mrib entry for a given
* destination address.
*
* @param address the destination address to search for.
* @return the Mrib entry for the destination address.
* @see Mrib.
*/
Mrib *find(const IPvX& address) const;
/**
* Add a MRIB entry to the MRIB table.
*
* Note that if the MRIB entry is for one of my own addresses, then we
* check the next-hop interface. If it points toward the loopback
* interface (e.g., in case of KAME IPv6 stack), then we overwrite it
* with the network interface this address belongs to.
*
* @param tid the transaction ID.
* @param mrib the MRIB entry to add.
* @param next_hop_vif_name the next-hop vif name. It is used for
* later resolving of Mrib::_next_hop_vif_index if the vif name
* is not known yet.
* @see Mrib.
*/
void add_pending_insert(uint32_t tid, const Mrib& mrib,
const string& next_hop_vif_name);
/**
* Remove a MRIB entry from the MRIB table.
*
* @param tid the transaction ID.
* @param mrib the MRIB entry to remove.
*/
void add_pending_remove(uint32_t tid, const Mrib& mrib);
/**
* Remove all MRIB entries from the MRIB table.
*
* @param tid the transaction ID.
*/
void add_pending_remove_all_entries(uint32_t tid);
/**
* Commit all pending MRIB entries to the MRIB table.
*
* @param tid the transaction ID for the pending MRIB entries to commit.
*/
void commit_pending_transactions(uint32_t tid);
/**
* Apply all changes to the table.
*
* Note that this may trigger various changes to the PIM protocol state
* machines.
*/
void apply_mrib_changes();
/**
* Get the list of modified prefixes since the last commit.
*
* @return the list of modified prefixes since the last commit.
*/
list<IPvXNet>& modified_prefix_list() { return (_modified_prefix_list); }
/**
* Resolve all destination prefixes whose next-hop vif name was not
* resolved earlier (e.g., the vif was unknown).
*
* @param next_hop_vif_name the name of the resolved vif.
* @param next_hop_vif_index the index of the resolved vif.
*/
void resolve_prefixes_by_vif_name(const string& next_hop_vif_name,
uint32_t next_hop_vif_index);
private:
PimNode& _pim_node; // The PIM node this table belongs to.
/**
* Add/merge a modified prefix to the '_modified_prefix_list'.
*/
void add_modified_prefix(const IPvXNet& modified_prefix);
/**
* Add a destination prefix whose next-hop vif name was not resolved
* (e.g., the vif is unknown).
*/
void add_unresolved_prefix(const IPvXNet& dest_prefix,
const string& next_hop_vif_name);
/**
* Delete a destination prefix whose next-hop vif name was not resolved
* earlier (e.g., the vif was unknown).
*/
void delete_unresolved_prefix(const IPvXNet& dest_prefix);
// The merged and enlarged list of modified prefixes that need
// to be applied to the PimMrt.
list<IPvXNet> _modified_prefix_list;
// The map of unresolved prefixes whose next-hop vif name was not resolved
map<IPvXNet, string> _unresolved_prefixes;
};
#endif // __PIM_PIM_MRIB_TABLE_HH__
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