@staticmethod
def _get_netmask(prefix_length):
+ """Convert IPv4 network prefix length into IPV4 network mask.
+
+ :param prefix_length: Length of network prefix.
+ :type prefix_length: int
+ :returns: Network mask.
+ :rtype: str
+ """
+
bits = 0xffffffff ^ (1 << 32 - prefix_length) - 1
return inet_ntoa(pack('>I', bits))
:type interface: str
:type address: str
:type prefix_length: int
- :return: nothing
+ :returns: nothing
"""
pass
:type prefix_length: int
:type gateway: str
:type interface: str
- :return: nothing
+ :returns: nothing
"""
pass
:type prefix_length: int
:type gateway: str
:type interface: str
- :return: nothing
+ :returns: nothing
"""
pass
:param source_interface: Source interface name.
:type destination_address: str
:type source_interface: str
- :return: nothing
+ :returns: nothing
"""
pass
super(Tg, self).__init__(node_info)
def _execute(self, cmd):
+ """Executes the specified command on TG using SSH.
+
+ :param cmd: Command to be executed.
+ :type cmd: str
+ :returns: Content of stdout and stderr returned by command.
+ :rtype: tuple
+ """
return exec_cmd_no_error(self.node_info, cmd)
def _sudo_execute(self, cmd):
+ """Executes the specified command with sudo on TG using SSH.
+
+ :param cmd: Command to be executed.
+ :type cmd: str
+ :returns: Content of stdout and stderr returned by command.
+ :rtype: tuple
+ """
return exec_cmd_no_error(self.node_info, cmd, sudo=True)
def set_ip(self, interface, address, prefix_length):
format(network, prefix_length))
def arp_ping(self, destination_address, source_interface):
+ """Execute 'arping' command to send one ARP packet from the TG node.
+
+ :param destination_address: Destination IP address for the ARP packet.
+ :param source_interface: Name of an interface to send ARP packet from.
+ :type destination_address: str
+ :type source_interface: str
+ """
self._sudo_execute('arping -c 1 -I {} {}'.format(source_interface,
destination_address))
:param interface: Interface name.
:type interface: str
- :return: sw_if_index of the interface or None.
+ :returns: sw_if_index of the interface or None.
:rtype: int
"""
return Topology().get_interface_sw_index(self.node_info, interface)
:param args: Parameters to the script.
:type script: str
:type args: dict
- :return: nothing
+ :returns: nothing
"""
# TODO: check return value
VatExecutor.cmd_from_template(self.node_info, script, **args)
sw_if_index=self.get_sw_if_index(interface))
def arp_ping(self, destination_address, source_interface):
+ """Does nothing."""
pass
def flush_ip_addresses(self, interface):
:param node_info: Dictionary containing information on nodes in topology.
:type node_info: dict
- :return: Class instance that is derived from Node.
+ :returns: Class instance that is derived from Node.
"""
if node_info['type'] == NodeType.TG:
return Tg(node_info)
:param nodes_addr: Available nodes IPv4 addresses.
:type nodes: dict
:type nodes_addr: dict
- :return: Affected interfaces as list of (node, interface) tuples.
+ :returns: Affected interfaces as list of (node, interface) tuples.
:rtype: list
"""
interfaces = []
:type node: dict
:type iface_key: str
:type nodes_addr: dict
- :return: IPv4 address.
+ :returns: IPv4 address.
:rtype: str
"""
interface = Topology.get_interface_name(node, iface_key)
host = port.get('node')
dev = port.get('if')
if host == node['host'] and dev == interface:
- ip = port.get('addr')
- if ip is not None:
- return ip
+ ip_addr = port.get('addr')
+ if ip_addr is not None:
+ return ip_addr
else:
raise Exception(
'Node {n} port {p} IPv4 address is not set'.format(