class ProtoNode

Base class for a protocol node. More...

 
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Protected Methods


Detailed Description

 ProtoNode (int init_family, xorp_module_id init_module_id, EventLoop& init_eventloop)

ProtoNode

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

Parameters:

init_familythe address family (AF_INET or AF_INET6 for IPv4 and IPv6 respectively).
init_module_idthe module ID XORP_MODULE_* (xorp_module_id).
init_eventloopthe event loop to use.
 ~ProtoNode ()

~ProtoNode

[virtual]

Destructor

uint32_t  vif_name2vif_index (const string& vif_name)

vif_name2vif_index

[const]

Map a vif name to a vif index.

Parameters:

vif_namethe vif name to map to a vif index.

Returns: the virtual interface index for vif name vif_name.

uint32_t  find_unused_vif_index ()

find_unused_vif_index

[const]

Find an unused vif index.

Returns: the smallest unused vif index if there is one available, otherwise return Vif::VIF_INDEX_INVALID.

V * vif_find_by_name (const string& name)

vif_find_by_name

[const]

Find a virtual interface for a given name.

Parameters:

namethe name to search for.

Returns: the virtual interface with name name if found, otherwise NULL.

V * vif_find_by_addr (const IPvX& ipaddr_test)

vif_find_by_addr

[const]

Find a virtual interface for a given address.

Note that the PIM Register virtual interfaces are excluded, because they are special, and because they may share the same address as some of the other virtual interfaces.

Parameters:

ipaddr_testthe address to search for.

Returns: the virtual interface with address ipaddr_test if found, otherwise NULL.

V * vif_find_by_pif_index (uint32_t pif_index)

vif_find_by_pif_index

[const]

Find a virtual interface for a given physical interface index.

Parameters:

pif_indexthe physical interface index to search for.

Returns: the virtual interface with physical interface index pif_index if found, otherwise NULL.

V * vif_find_by_vif_index (uint32_t vif_index)

vif_find_by_vif_index

[const]

Find a virtual interface for a given virtual interface index.

Parameters:

vif_indexthe virtual interface index to search for.

Returns: the vvirtual interface with virtual interface index vif_index if found, otherwise NULL.

V * vif_find_same_subnet_or_p2p (const IPvX& ipaddr_test)

vif_find_same_subnet_or_p2p

[const]

Find a virtual interface that belongs to the same subnet or point-to-point link as a given address.

Note that the PIM Register virtual interfaces are excluded, because they are special, and because they may share the same address as some of the other virtual interfaces.

Parameters:

ipaddr_testthe address to search by.

Returns: the virtual interface that belongs to the same subnet or point-to-point link as address ipaddr_test if found, otherwise NULL.

bool  is_my_addr (const IPvX& ipaddr_test)

is_my_addr

[const]

Test if an address belongs to one of my virtual interfaces.

Note that the PIM Register virtual interfaces are excluded, because they are special, and because they may share the same address as some of the other virtual interfaces.

Parameters:

ipaddr_testthe address to test.

Returns: true if ipaddr_test belongs to one of my virtual interfaces, otherwise false.

int  add_vif (V *vif)

add_vif

Add a virtual interface.

Parameters:

vifa pointer to the virtual interface to add.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  delete_vif (const V *vif)

delete_vif

Delete a virtual interface.

Note: the vif itself is not deleted, only its place in the array of protocol vifs.

Parameters:

vifa pointer to the virtual interface to delete.

Returns: XORP_OK on success, otherwise XORP_ERROR.

vector<V *>&  proto_vifs ()

proto_vifs

Get the array of pointers to the virtual interfaces.

Returns: the array of pointers to the virtual interfaces.

const vector<V *>&  const_proto_vifs ()

const_proto_vifs

[const]

Get the array of pointers to the virtual interfaces.

Returns: the array of pointers to the virtual interfaces.

uint32_t  maxvifs ()

maxvifs

[const]

Get the maximum number of vifs.

Note: the interfaces that are not configured or are down are also included.

Returns: the maximum number of vifs we can have.

EventLoop&  eventloop ()

eventloop

Get the event loop this node is added to.

Returns: the event loop this node is added to.

int  proto_recv (const string& if_name, const string& vif_name, const IPvX& src_address, const IPvX& dst_address, uint8_t ip_protocol, int32_t ip_ttl, int32_t ip_tos, bool ip_router_alert, bool ip_internet_control, const vector<uint8_t>& payload, string& error_msg)

proto_recv

[pure virtual]

Receive a protocol packet.

This is a pure virtual function, and it must be implemented by the particular protocol node class that inherits this base class.

Parameters:

if_namethe interface name the packet arrived on.
vif_namethe vif name the packet arrived on.
src_addressthe IP source address.
dst_addressthe IP destination address.
ip_protocolthe IP protocol number.
ip_ttlthe IP TTL (hop-limit). If it has a negative value, then the received value is unknown.
ip_tosthe Type of Service (Diffserv/ECN bits for IPv4). If it has a negative value, then the received value is unknown.
ip_router_alertif true, the IP Router Alert option was included in the IP packet.
ip_internet_controlif true, then this is IP control traffic.
payloadthe payload, everything after the IP header and options.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  proto_send (const string& if_name, const string& vif_name, const IPvX& src_address, const IPvX& dst_address, uint8_t ip_protocol, int32_t ip_ttl, int32_t ip_tos, bool ip_router_alert, bool ip_internet_control, const uint8_t* sndbuf, size_t sndlen, string& error_msg)

proto_send

[pure virtual]

Send a protocol packet.

This is a pure virtual function, and it must be implemented by the particular protocol node class that inherits this base class.

Parameters:

if_namethe interface to send the packet on. It is essential for multicast. In the unicast case this field may be empty.
vif_namethe vif to send the packet on. It is essential for multicast. In the unicast case this field may be empty.
src_addressthe IP source address.
dst_addressthe IP destination address.
ip_protocolthe IP protocol number. It must be between 1 and 255.
ip_ttlthe IP TTL (hop-limit). If it has a negative value, the TTL will be set internally before transmission.
ip_tosthe Type Of Service (Diffserv/ECN bits for IPv4). If it has a negative value, the TOS will be set internally before transmission.
ip_router_alertif true, then add the IP Router Alert option to the IP packet.
ip_internet_controlif true, then this is IP control traffic.
sndbufthe data buffer with the outgoing packet.
sndlenthe data length in sndbuf.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  signal_message_recv (const string& src_module_instance_name, int message_type, uint32_t vif_index, const IPvX& src, const IPvX& dst, const uint8_t *rcvbuf, size_t rcvlen)

signal_message_recv

[pure virtual]

Receive a signal message.

This is a pure virtual function, and it must be implemented by the particular protocol node class that inherits this base class.

Parameters:

src_module_instance_namethe module instance name of the module-origin of the message.
message_typethe message type. The particular values are specific for the origin and recepient of this signal message.
vif_indexthe vif index of the related interface (message-specific relation).
srcthe source address of the message. The exact meaning of this address is message-specific.
dstthe destination address of the message. The exact meaning of this address is message-specific.
rcvbufthe data buffer with the additional information in the message.
rcvlenthe data length in rcvbuf.

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  signal_message_send (const string& dst_module_instance_name, int message_type, uint32_t vif_index, const IPvX& src, const IPvX& dst, const uint8_t *sndbuf, size_t sndlen)

signal_message_send

[pure virtual]

Send a signal message.

This is a pure virtual function, and it must be implemented by the particular protocol node class that inherits this base class.

Parameters:

dst_module_instance_namethe module instance name of the module-recepient of the message.
message_typethe message type. The particular values are specific for the origin and recepient of this signal message.
vif_indexthe vif index of the related interface (message-specific relation).
srcthe source address of the message. The exact meaning of this address is message-specific.
dstthe destination address of the message. The exact meaning of this address is message-specific.
sndbufthe data buffer with the outgoing message.
sndlenthe data length in sndbuf.

Returns: XORP_OK on success, otherwise XORP_ERROR.

bool  is_done ()

is_done

[const]

Test if the node processing is done.

Returns: true if the node processing is done, otherwise false.

ProcessStatus  node_status ()

node_status

[const]

Get the node status (see ProcessStatus).

Returns: the node status (see ProcessStatus).

void  set_node_status (ProcessStatus v)

set_node_status

Set the node status (see ProcessStatus).

Parameters:

vthe value to set the node status to.
int  start_config (string& error_msg)

start_config

Start a set of configuration changes.

Note that it may change the node status.

Parameters:

error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  end_config (string& error_msg)

end_config

End a set of configuration changes.

Note that it may change the node status.

Parameters:

error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

uint32_t  find_unused_config_vif_index ()

find_unused_config_vif_index

[const]

Find an unused vif index from the set of configured vifs.

Returns: the smallest unused vif index from the set of configured vifs if there is one available, otherwise return Vif::VIF_INDEX_INVALID.

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

add_config_vif

Add a configured vif.

Parameters:

vifthe vif with the information to add.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

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

add_config_vif

Add a configured vif.

Parameters:

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

Returns: XORP_OK on success, otherwise XORP_ERROR.

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

delete_config_vif

Delete a configured vif.

Parameters:

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

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  add_config_vif_addr (const string& vif_name, const IPvX& addr, const IPvXNet& subnet, const IPvX& broadcast, const IPvX& peer, string& error_msg)

add_config_vif_addr

Add an address to a configured vif.

Parameters:

vif_namethe name of the vif.
addrthe address to add.
subnetthe subnet address to add.
broadcastthe broadcast address to add.
peerthe peer address to add.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

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

delete_config_vif_addr

Delete an address from a configured vif.

Parameters:

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

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  set_config_pif_index (const string& vif_name, uint32_t pif_index, string& error_msg)

set_config_pif_index

Set the pif_index of a configured vif.

Parameters:

vif_namethe name of the vif.
pif_indexthe physical interface index.
error_msgthe error message (if error).

Returns: XORP_OK on success, otherwise XORP_ERROR.

int  set_config_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, uint32_t mtu, string& error_msg)

set_config_vif_flags

Set the vif flags of a configured vif.

Parameters:

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

Returns: XORP_OK on success, otherwise XORP_ERROR.

map<string, Vif>&  configured_vifs ()

configured_vifs

Get the map with configured vifs.

Returns: a reference for the map with configured vifs.

const Vifconfigured_vif_find_by_name (const string& name)

configured_vif_find_by_name

[const]

Find a configured virtual interface for a given name.

Parameters:

namethe name to search for.

Returns: the virtual interface with name name if found, otherwise NULL.

ProcessStatus  node_status (string& reason_msg)

node_status

Get the node status (see ProcessStatus).

Parameters:

reason_msgreturn-by-reference string that contains human-readable information about the status.

Returns: the node status (see ProcessStatus).

void  incr_startup_requests_n ()

incr_startup_requests_n

Increment the number of startup requests.

void  decr_startup_requests_n ()

decr_startup_requests_n

Decrement the number of startup requests.

void  incr_shutdown_requests_n ()

incr_shutdown_requests_n

Increment the number of shutdown requests.

void  decr_shutdown_requests_n ()

decr_shutdown_requests_n

Decrement the number of shutdown requests.

void  update_status ()

update_status

[protected]


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