ResolvedIPRouteEntry< A > Class Template Reference

Extended RouteEntry, used by ExtIntTable. More...

#include <route.hh>

Inheritance diagram for ResolvedIPRouteEntry< A >:

List of all members.

Public Types
typedef multimap< const IPRouteEntry< A > *, ResolvedIPRouteEntry< A > * >	RouteBackLink
Public Member Functions
	ResolvedIPRouteEntry (const IPNet< A > &net, RibVif *vif, NextHop *nexthop, const Protocol &protocol, uint32_t metric, const IPRouteEntry< A > *igp_parent, const IPRouteEntry< A > *egp_parent)
	Constructor for IPRouteEntry.
const IPRouteEntry< A > *	igp_parent () const
	Get the igp_parent.
const IPRouteEntry< A > *	egp_parent () const
	Get the EGP parent.
void	set_backlink (typename RouteBackLink::iterator v)
	Set the backlink.
RouteBackLink::iterator	backlink () const
	Get the backlink.
Private Attributes
const IPRouteEntry< A > *	_igp_parent
const IPRouteEntry< A > *	_egp_parent
RouteBackLink::iterator	_backlink

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Detailed Description

template<class A>
class ResolvedIPRouteEntry< A >

Extended RouteEntry, used by ExtIntTable.

This class stored an extended routing table entry, for use in ExtIntTable. When a route with a non-local nexthop arrives, the ExtIntTable attempts to discover a local nexthop by finding the route that packets to the non-local nexthop would use. This entry is used to store the resulting route, with a local nexthop, and with links to the parent routes that were used to provide the information in this route entry.

This is a template class, where A is either a the IPv4 class or the IPv6 class.

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Constructor & Destructor Documentation

template<class A>

ResolvedIPRouteEntry< A >::ResolvedIPRouteEntry	(	const IPNet< A > &	net,
		RibVif *	vif,
		NextHop *	nexthop,
		const Protocol &	protocol,
		uint32_t	metric,
		const IPRouteEntry< A > *	igp_parent,
		const IPRouteEntry< A > *	egp_parent
	)		[inline]

Constructor for IPRouteEntry.

Parameters:

net	the Subnet (address and mask) of the routing table entry.
vif	the Virtual Interface on which packets matching this routing table entry should be forwarded.
nexthop	the NextHop router to which packets matching this entry should be forwarded. This should be a local nexthop.
protocol	the routing protocol that originated this route.
metric	the routing protocol metric for this route.
igp_parent	the route entry used to resolve the non-local nexthop in the egp_parent into a local nexthop.
egp_parent	the orginal route entry with a non-local nexthop.

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Member Function Documentation

template<typename A >

ResolvedIPRouteEntry< A >::RouteBackLink::iterator ResolvedIPRouteEntry< A >::backlink

(

)

const [inline]

Get the backlink.

See also:

ResolvedIPRouteEntry<A>::set_backlink

Returns:

the backlink iterator.

template<class A>

const IPRouteEntry<A>* ResolvedIPRouteEntry< A >::egp_parent

(

)

const [inline]

Get the EGP parent.

Returns:

the EGP parent, which is the original route entry that had a non-local nexthop.

template<class A>

const IPRouteEntry<A>* ResolvedIPRouteEntry< A >::igp_parent

(

)

const [inline]

Get the igp_parent.

Returns:

the IGP parent route entry that was used to resolve the EGP parent route entry's non-local nexthop into a local nexthop.

template<typename A >

void ResolvedIPRouteEntry< A >::set_backlink

(

typename RouteBackLink::iterator

v

)

[inline]

Set the backlink.

When a resolved route is created, the ExtIntTable will store a link to it in a multimap that is indexed by the IGP parent. This will allow all the routes affected by a change in the IGP parent to be found easily. However, if the EGP parent goes away, we need to remove the links from this multimap, and the backlink provides an iterator into the multimap that makes this operation very efficient.

Parameters:

backlink

the ExtIntTable multimap iterator for this route.

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The documentation for this class was generated from the following file:

• /home/greearb/git/xorp.ct.github/xorp/rib/route.hh