class Mld6igmpNode

The MLD/IGMP node class. More...

 
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Detailed Description

There should be one node per MLD or IGMP instance. There should be one instance per address family.

 Mld6igmpNode (int family, xorp_module_id module_id, EventLoop& eventloop)

Mld6igmpNode

Constructor for a given address family, module ID, and event loop.

Parameters:

familythe address family (AF_INET or AF_INET6 for IPv4 and IPv6 respectively).
module_idthe module ID (xorp_module_id). Should be equal to XORP_MODULE_MLD6IGMP.
eventloopthe event loop to use.
 ~Mld6igmpNode ()

~Mld6igmpNode

[virtual]

Destructor

int  start ()

start

Start the node operation.

Start the MLD or IGMP protocol. After the startup operations are completed, Mld6igmpNode::final_start() is called internally to complete the job.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  stop ()

stop

Stop the node operation.

Gracefully stop the MLD or IGMP protocol. After the shutdown operations are completed, Mld6igmpNode::final_stop() is called internally to complete the job.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  final_start ()

final_start

Completely start the node operation.

This method should be called internally after Mld6igmpNode::start() to complete the job.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  final_stop ()

final_stop

Completely stop the node operation.

This method should be called internally after Mld6igmpNode::stop() to complete the job.

Returns: XORP_OK on success, otherwise XORP_ERROR.

void  enable ()

enable

Enable node operation.

If an unit is not enabled, it cannot be start, or pending-start.

void  disable ()

disable

Disable node operation.

If an unit is disabled, it cannot be start or pending-start. If the unit was runnning, it will be stop first.

int  add_vif (const Vif& vif, string& error_msg)

add_vif

Install a new MLD/IGMP vif.

Parameters:

vifvif information about the new Mld6igmpVif to install.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

Reimplemented from ProtoNode.

int  add_vif (const string& vif_name, uint32_t vif_index, string& error_msg)

add_vif

Install a new MLD/IGMP vif.

Parameters:

vif_namethe name of the new vif.
vif_indexthe vif index of the new vif.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

Reimplemented from ProtoNode.

int  delete_vif (const string& vif_name, string& error_msg)

delete_vif

Delete an existing MLD/IGMP vif.

Parameters:

vif_namethe name of the vif to delete.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

Reimplemented from ProtoNode.

int  set_vif_flags (const string& vif_name, bool is_pim_register, bool is_p2p, bool is_loopback, bool is_multicast, bool is_broadcast, bool is_up, string& error_msg)

set_vif_flags

Set flags to a vif.

Parameters:

vif_namethe name of the vif.
is_pim_registertrue if this is a PIM Register vif.
is_p2ptrue if this is a point-to-point vif.
is_loopbacktrue if this is a loopback interface.
is_multicasttrue if the vif is multicast-capable.
is_broadcasttrue if the vif is broadcast-capable.
is_uptrue if the vif is UP and running.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  add_vif_addr (const string& vif_name, const IPvX& addr, const IPvXNet& subnet_addr, const IPvX& broadcast_addr, const IPvX& peer_addr, string& error_msg)

add_vif_addr

Add an address to a vif.

Parameters:

vif_namethe name of the vif.
addrthe unicast address to add.
subnet_addrthe subnet address to add.
broadcast_addrthe broadcast address (when applicable).
peer_addrthe peer address (when applicable).
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  delete_vif_addr (const string& vif_name, const IPvX& addr, string& error_msg)

delete_vif_addr

Delete an address from a vif.

Parameters:

vif_namethe name of the vif.
addrthe unicast address to delete.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  enable_vif (const string& vif_name, string& error_msg)

enable_vif

Enable an existing MLD6IGMP vif.

Parameters:

vif_namethe name of the vif to enable.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  disable_vif (const string& vif_name, string& error_msg)

disable_vif

Disable an existing MLD6IGMP vif.

Parameters:

vif_namethe name of the vif to disable.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  start_vif (const string& vif_name, string& error_msg)

start_vif

Start an existing MLD6IGMP vif.

Parameters:

vif_namethe name of the vif to start.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  stop_vif (const string& vif_name, string& error_msg)

stop_vif

Stop an existing MLD6IGMP vif.

Parameters:

vif_namethe name of the vif to start.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  start_all_vifs ()

start_all_vifs

Start MLD/IGMP on all enabled interfaces.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  stop_all_vifs ()

stop_all_vifs

Stop MLD/IGMP on all interfaces it was running on.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  enable_all_vifs ()

enable_all_vifs

Enable MLD/IGMP on all interfaces.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  disable_all_vifs ()

disable_all_vifs

Disable MLD/IGMP on all interfaces.

Returns: XORP_OK on success, otherwise XORP_ERROR.

void  delete_all_vifs ()

delete_all_vifs

Delete all MLD/IGMP vifs.

void  vif_shutdown_completed (const string& vif_name)

vif_shutdown_completed

A method called when a vif has completed its shutdown.

Parameters:

vif_namethe name of the vif that has completed its shutdown.
int  proto_recv (const string& src_module_instance_name, xorp_module_id src_module_id, uint16_t vif_index, const IPvX& src, const IPvX& dst, int ip_ttl, int ip_tos, bool is_router_alert, const uint8_t *rcvbuf, size_t rcvlen)

proto_recv

Receive a protocol message.

Parameters:

src_module_instance_namethe module instance name of the module-origin of the message.
src_module_idthe module ID (xorp_module_id) of the module-origin of the message.
vif_indexthe vif index of the interface used to receive this message.
srcthe source address of the message.
dstthe destination address of the message.
ip_ttlthe IP TTL of the message. If it has a negative value, it should be ignored.
ip_tosthe IP TOS of the message. If it has a negative value, it should be ignored.
is_router_alertif true, the IP Router Alert option in the IP packet was set (when applicable).
rcvbufthe data buffer with the received message.
rcvlenthe data length in rcvbuf.

Returns: XORP_OK on success, otherwise XORP_ERROR.

Reimplemented from ProtoNode.

int  mld6igmp_send (uint16_t vif_index, const IPvX& src, const IPvX& dst, int ip_ttl, int ip_tos, bool is_router_alert, buffer_t *buffer)

mld6igmp_send

Send a protocol message.

Note: this method uses the pure virtual ProtoNode::proto_send() method that is implemented somewhere else (in a class that inherits this one).

Parameters:

vif_indexthe vif index of the vif to send the message.
srcthe source address of the message.
dstthe destination address of the message.
ip_ttlthe TTL of the IP packet to send. If it has a negative value, the TTL will be set by the lower layers.
ip_tosthe TOS of the IP packet to send. If it has a negative value, the TOS will be set by the lower layers.
is_router_alertif true, set the IP Router Alert option in the IP packet to send (when applicable).
bufferthe data buffer with the message to send.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  signal_message_recv (const string& , xorp_module_id , int , uint16_t , const IPvX& , const IPvX& , const uint8_t * , size_t )

signal_message_recv

Receive signal message: not used by MLD/IGMP.

Reimplemented from ProtoNode.

int  signal_message_send (const string& , xorp_module_id , int , uint16_t , const IPvX& , const IPvX& , const uint8_t * , size_t )

signal_message_send

Send signal message: not used by MLD/IGMP.

Reimplemented from ProtoNode.

int  start_protocol_kernel_vif (uint16_t vif_index)

start_protocol_kernel_vif

[pure virtual]

Start a protocol vif with the kernel.

This is a pure virtual function, and it must be implemented by the communication-wrapper class that inherits this base class.

Parameters:

vif_indexthe vif index of the interface to start.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  stop_protocol_kernel_vif (uint16_t vif_index)

stop_protocol_kernel_vif

[pure virtual]

Stop a protocol vif with the kernel.

This is a pure virtual function, and it must be implemented by the communication-wrapper class that inherits this base class.

Parameters:

vif_indexthe vif index of the interface to stop.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  join_multicast_group (uint16_t vif_index, const IPvX& multicast_group)

join_multicast_group

[pure virtual]

Join a multicast group on an interface.

This is a pure virtual function, and it must be implemented by the communication-wrapper class that inherits this base class.

TODO: add a source address as well!!

Parameters:

vif_indexthe vif index of the interface to join.
multicast_groupthe multicast group address.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  leave_multicast_group (uint16_t vif_index, const IPvX& multicast_group)

leave_multicast_group

[pure virtual]

Leave a multicast group on an interface.

This is a pure virtual function, and it must be implemented by the communication-wrapper class that inherits this base class.

TODO: add a source address as well!!

Parameters:

vif_indexthe vif index of the interface to leave.
multicast_groupthe multicast group address.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  add_protocol (const string& module_instance_name, xorp_module_id module_id, uint16_t vif_index)

add_protocol

Add a protocol that needs to be notified about multicast membership changes.

Add a protocol to the list of entries that would be notified if there is membership change on a particular interface.

Parameters:

module_instance_namethe module instance name of the protocol to add.
module_idthe module ID (xorp_module_id) of the protocol to add.
vif_indexthe vif index of the interface to add the protocol to.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  delete_protocol (const string& module_instance_name, xorp_module_id module_id, uint16_t vif_index)

delete_protocol

Delete a protocol that needs to be notified about multicast membership changes.

Delete a protocol from the list of entries that would be notified if there is membership change on a particular interface.

Parameters:

module_instance_namethe module instance name of the protocol to delete.
module_idthe module ID (xorp_module_id) of the protocol to delete.
vif_indexthe vif index of the interface to delete the protocol from.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  send_add_membership (const string& dst_module_instance_name, xorp_module_id dst_module_id, uint16_t vif_index, const IPvX& source, const IPvX& group)

send_add_membership

[pure virtual]

Send "add membership" to a protocol that needs to be notified about multicast membership changes.

This is a pure virtual function, and it must be implemented by the communication-wrapper class that inherits this base class.

Parameters:

dst_module_instance_namethe module instance name of the protocol to notify.
dst_module_idthe module ID (xorp_module_id) of the protocol to notify.
vif_indexthe vif index of the interface with membership change.
sourcethe source address of the (S,G) or (*,G) entry that has changed membership. In case of Any-Source Multicast, it is IPvX::ZERO().
groupthe group address.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  send_delete_membership (const string& dst_module_instance_name, xorp_module_id dst_module_id, uint16_t vif_index, const IPvX& source, const IPvX& group)

send_delete_membership

[pure virtual]

Send "delete membership" to a protocol that needs to be notified about multicast membership changes.

This is a pure virtual function, and it must be implemented by the communication-wrapper class that inherits this base class.

Parameters:

dst_module_instance_namethe module instance name of the protocol to notify.
dst_module_idthe module ID (xorp_module_id) of the protocol to notify.
vif_indexthe vif index of the interface with membership change.
sourcethe source address of the (S,G) or (*,G) entry that has changed membership. In case of Any-Source Multicast, it is IPvX::ZERO().
groupthe group address of the (S,G) or (*,G) entry that has changed.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  join_prune_notify_routing (const string& module_instance_name, xorp_module_id module_id, uint16_t vif_index, const IPvX& source, const IPvX& group, action_jp_t action_jp)

join_prune_notify_routing

Notify a protocol about multicast membership change.

Parameters:

module_instance_namethe module instance name of the protocol to notify.
module_idthe module ID (xorp_module_id) of the protocol to notify.
vif_indexthe vif index of the interface with membership change.
sourcethe source address of the (S,G) or (*,G) entry that has changed. In case of group-specific multicast, it is IPvX::ZERO().
groupthe group address of the (S,G) or (*,G) entry that has changed.
action_jpthe membership change type (action_jp_t): either ACTION_JOIN or ACTION_PRUNE.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  get_vif_proto_version (const string& vif_name, int& proto_version, string& error_msg)

get_vif_proto_version

Get the protocol version on an interface.

Parameters:

vif_namethe name of the vif to get the protocol version of.
proto_versionthe return-by-reference protocol version.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  set_vif_proto_version (const string& vif_name, int proto_version, string& error_msg)

set_vif_proto_version

Set the protocol version on an interface.

Parameters:

vif_namethe name of the vif to set the protocol version of.
proto_versionthe new protocol version.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  reset_vif_proto_version (const string& vif_name, string& error_msg)

reset_vif_proto_version

Reset the protocol version on an interface to its default value.

Parameters:

vif_namethe name of the vif to reset the protocol version of to its default value.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

bool  is_log_trace ()

is_log_trace

[const]

Test if trace log is enabled.

This method is used to test whether to output trace log debug messges.

Returns: true if trace log is enabled, otherwise false.

void  set_log_trace (bool is_enabled)

set_log_trace

Enable/disable trace log.

This method is used to enable/disable trace log debug messages output.

Parameters:

is_enabledif true, trace log is enabled, otherwise is disabled.

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