// -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-
// Copyright (c) 2001-2006 International Computer Science Institute
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software")
// to deal in the Software without restriction, subject to the conditions
// listed in the XORP LICENSE file. These conditions include: you must
// preserve this copyright notice, and you cannot mention the copyright
// holders in advertising related to the Software without their permission.
// The Software is provided WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED. This
// notice is a summary of the XORP LICENSE file; the license in that file is
// legally binding.
// $XORP: xorp/fea/fte.hh,v 1.18 2006/03/16 00:03:49 pavlin Exp $
#ifndef __FEA_FTE_HH__
#define __FEA_FTE_HH__
#include "libxorp/xorp.h"
#include "libxorp/ipv4.hh"
#include "libxorp/ipv6.hh"
#include "libxorp/ipvx.hh"
#include "libxorp/ipv4net.hh"
#include "libxorp/ipv6net.hh"
#include "libxorp/ipvxnet.hh"
/**
* @short Forwarding Table Entry.
*
* Representation of a forwarding table entry.
*/
template<typename A, typename N>
class Fte {
public:
Fte() { zero(); }
explicit Fte(int family) : _net(family), _nexthop(family) { zero(); }
Fte(const N& net,
const A& nexthop,
const string& ifname,
const string& vifname,
uint32_t metric,
uint32_t admin_distance,
bool xorp_route)
: _net(net), _nexthop(nexthop), _ifname(ifname), _vifname(vifname),
_metric(metric), _admin_distance(admin_distance),
_xorp_route(xorp_route), _is_deleted(false), _is_unresolved(false),
_is_connected_route(false) {}
Fte(const N& net)
: _net(net), _nexthop(A::ZERO(net.af())),
_metric(0), _admin_distance(0),
_xorp_route(false), _is_deleted(false), _is_unresolved(false),
_is_connected_route(false) {}
const N& net() const { return _net; }
const A& nexthop() const { return _nexthop; }
const string& ifname() const { return _ifname; }
const string& vifname() const { return _vifname; }
uint32_t metric() const { return _metric; }
uint32_t admin_distance() const { return _admin_distance; }
bool xorp_route() const { return _xorp_route; }
bool is_deleted() const { return _is_deleted; }
void mark_deleted() { _is_deleted = true; }
bool is_unresolved() const { return _is_unresolved; }
void mark_unresolved() { _is_unresolved = true; }
bool is_connected_route() const { return _is_connected_route; }
void mark_connected_route() { _is_connected_route = true; }
/**
* Reset all members
*/
void zero() {
_net = N(A::ZERO(_net.af()), 0);
_nexthop = A::ZERO(_nexthop.af());
_ifname.erase();
_vifname.erase();
_metric = 0;
_admin_distance = 0;
_xorp_route = false;
_is_deleted = false;
_is_unresolved = false;
_is_connected_route = false;
}
/**
* @return true if this is a host route.
*/
inline bool is_host_route() const {
return _net.prefix_len() == _net.masked_addr().addr_bitlen();
}
/**
* @return A string representation of the entry.
*
* dst = 127.0.0.1 nexthop = 127.0.0.1 netmask = 255.255.255.255 if = lo0
* metric = 10 admin_distance = 20
*/
string str() const {
return c_format("net = %s nexthop = %s ifname = %s vifname = %s "
"metric = %u admin_distance = %u xorp_route = %s "
"is_deleted = %s is_unresolved = %s "
"is_connected_route = %s",
_net.str().c_str(), _nexthop.str().c_str(),
_ifname.c_str(), _vifname.c_str(),
XORP_UINT_CAST(_metric),
XORP_UINT_CAST(_admin_distance),
_xorp_route ? "true" : "false",
_is_deleted ? "true" : "false",
_is_unresolved ? "true" : "false",
_is_connected_route? "true" : "false");
}
private:
N _net; // Network
A _nexthop; // Nexthop address
string _ifname; // Interface name
string _vifname; // Virtual interface name
uint32_t _metric; // Route metric
uint32_t _admin_distance; // Route admin distance
bool _xorp_route; // This route was installed by XORP
bool _is_deleted; // True if the entry was deleted
bool _is_unresolved; // True if the entry is actually
// a notification of an unresolved
// route to the destination.
bool _is_connected_route; // True if this is a route for
// directly-connected subnet.
};
typedef Fte<IPv4, IPv4Net> Fte4;
typedef Fte<IPv6, IPv6Net> Fte6;
typedef Fte<IPvX, IPvXNet> BaseFteX;
class FteX : public BaseFteX {
public:
/**
* Constructor
*
* @param net the network address.
* @param nexthop the next-hop router address.
* @param ifname the interface name.
* @param vifname the virtual interface name.
* @param metric the route metric.
* @param admin_distance the route admin distance.
* @param xorp_route true if this is a XORP route.
*/
FteX(const IPvXNet& net,
const IPvX& nexthop,
const string& ifname,
const string& vifname,
uint32_t metric,
uint32_t admin_distance,
bool xorp_route)
: BaseFteX(net,
nexthop,
ifname,
vifname,
metric,
admin_distance,
xorp_route) {}
/**
* Constructor for a specified address family.
*/
explicit FteX(int family) : BaseFteX(family) {}
/**
* Copy constructor for Fte4 entry.
*/
FteX(const Fte4& fte4)
: BaseFteX(IPvXNet(fte4.net()),
IPvX(fte4.nexthop()),
fte4.ifname(),
fte4.vifname(),
fte4.metric(),
fte4.admin_distance(),
fte4.xorp_route()) {
if (fte4.is_deleted())
mark_deleted();
if (fte4.is_unresolved())
mark_unresolved();
if (fte4.is_connected_route())
mark_connected_route();
}
/**
* Copy constructor for Fte6 entry.
*/
FteX(const Fte6& fte6)
: BaseFteX(IPvXNet(fte6.net()),
IPvX(fte6.nexthop()),
fte6.ifname(),
fte6.vifname(),
fte6.metric(),
fte6.admin_distance(),
fte6.xorp_route()) {
if (fte6.is_deleted())
mark_deleted();
if (fte6.is_unresolved())
mark_unresolved();
if (fte6.is_connected_route())
mark_connected_route();
}
/**
* Get an Fte4 entry.
*
* @return the corresponding Fte4 entry.
*/
inline Fte4 get_fte4() const throw (InvalidCast)
{
Fte4 fte4(net().get_ipv4net(),
nexthop().get_ipv4(),
ifname(),
vifname(),
metric(),
admin_distance(),
xorp_route());
if (is_deleted())
fte4.mark_deleted();
if (is_unresolved())
fte4.mark_unresolved();
if (is_connected_route())
fte4.mark_connected_route();
return fte4;
}
/**
* Get an Fte6 entry.
*
* @return the corresponding Fte6 entry.
*/
inline Fte6 get_fte6() const throw (InvalidCast)
{
Fte6 fte6(net().get_ipv6net(),
nexthop().get_ipv6(),
ifname(),
vifname(),
metric(),
admin_distance(),
xorp_route());
if (is_deleted())
fte6.mark_deleted();
if (is_unresolved())
fte6.mark_unresolved();
if (is_connected_route())
fte6.mark_connected_route();
return fte6;
}
};
#endif // __FEA_FTE_HH__
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