NextHopResolver< A > Class Template Reference

Inheritance diagram for NextHopResolver< A >:

List of all members.

Public Member Functions
	NextHopResolver (XrlStdRouter *xrl_router, EventLoop &eventloop, BGPMain &bgp)
void	add_decision (DecisionTable< A > *decision)
	Add decision.
bool	register_ribname (const string &r)
	Set the rib's name, allows for having a dummy rib or not having a RIB at all.
virtual bool	register_nexthop (A nexthop, IPNet< A > net_from_route, NhLookupTable< A > *requester)
	Register interest in this nexthop.
virtual void	deregister_nexthop (A nexthop, IPNet< A > net_from_route, NhLookupTable< A > *requester)
	De-Register interest in this nexthop.
virtual bool	lookup (const A nexthop, bool &resolvable, uint32_t &metric) const
	Lookup next hop.
bool	rib_client_route_info_changed (const A &addr, const uint32_t &prefix_len, const A &nexthop, const uint32_t &metric)
	Call from the RIB to notify us that a metric has changed.
bool	rib_client_route_info_invalid (const A &addr, const uint32_t &prefix_len)
	Call from the RIB to notify us that any registrations with this address and prefix_len are now invalid.
void	next_hop_changed (A nexthop)
	Next hop changed.
void	next_hop_changed (A nexthop, bool old_resolves, uint32_t old_metric)
	Next hop changed.
NextHopRibRequest< A > *	get_next_hop_rib_request ()
	Get NextHopRibRequest pointer.
EventLoop &	eventloop ()
	Get a reference to the main timer list.
Protected Attributes
list< DecisionTable< A > * >	_decision
Private Attributes
string	_ribname
XrlStdRouter *	_xrl_router
EventLoop &	_eventloop
BGPMain &	_bgp
NextHopCache< A >	_next_hop_cache
NextHopRibRequest< A >	_next_hop_rib_request

template<class A>
class NextHopResolver< A >

---

Member Function Documentation

template<class A>

void NextHopResolver< A >::add_decision

(

DecisionTable< A > *

decision

)

Add decision.

Pass a pointer to the decision table into the next hop resolver. This pointer is used to notify the decision table when a next hop metric changes.

Parameters:

decision

Pointer to the decision table.

template<class A>

void NextHopResolver< A >::deregister_nexthop	(	A	nexthop,
		IPNet< A >	net_from_route,
		NhLookupTable< A > *	requester
	)		[virtual]

De-Register interest in this nexthop.

Parameters:

nexthop	Nexthop.
net_from_route	The net that is associated with this nexthop in the NextHopLookupTable. Treated as an opaque id.
requester	Original requester, not used.

Returns:

True if the registration succeed.

Reimplemented in DummyResolver< A >.

template<class A>

NextHopRibRequest<A>* NextHopResolver< A >::get_next_hop_rib_request

(

)

[inline]

Get NextHopRibRequest pointer.

Used for testing.

template<class A>

bool NextHopResolver< A >::lookup	(	const A	nexthop,
		bool &	resolvable,
		uint32_t &	metric
	)		const [virtual]

Lookup next hop.

If a "register_nexthop" request has been made and callback has taken place via the "requester" pointer, then the lookup is guaranteed to work.

Parameters:

nexthop	Next hop.
resolvable	Is this route resolvable.
metric	If this route is resolvable the metric of this route.

Returns:

True if this next hop is found.

Reimplemented in DummyNextHopResolver< A >.

template<class A>

void NextHopResolver< A >::next_hop_changed

(

A

nexthop

)

Next hop changed.

Whenever a next hop changes this method should be called and the change will be rippled up to the decision process.

Parameters:

nexthop

The next hop that has changed.

template<class A>

void NextHopResolver< A >::next_hop_changed	(	A	nexthop,
		bool	old_resolves,
		uint32_t	old_metric
	)

Next hop changed.

Whenever a next hop changes this method should be called and the change will be rippled up to the decision process. However if a change occurs but the metrics don't change don't bother to ripple up the change there is no point.

Parameters:

nexthop	The next hop that has changed.
old_resolves	The old resolve value.
old_metric	The old metric value.

template<class A>

bool NextHopResolver< A >::register_nexthop	(	A	nexthop,
		IPNet< A >	net_from_route,
		NhLookupTable< A > *	requester
	)		[virtual]

Register interest in this nexthop.

Parameters:

nexthop	Nexthop.
net_from_route	The net that is associated with this nexthop in the NextHopLookupTable. Treated as an opaque id.
requester	Once the registration with the RIB suceeds the requester is called back.

Returns:

True if the registration succeed.

Reimplemented in DummyResolver< A >.

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

• /home/greearb/git/xorp.ct.github/xorp/bgp/next_hop_resolver.hh
• /home/greearb/git/xorp.ct.github/xorp/bgp/next_hop_resolver.cc