@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
+
+ :return: Network mask.
+ :rtype: str
+ """
+
bits = 0xffffffff ^ (1 << 32 - prefix_length) - 1
return inet_ntoa(pack('>I', bits))
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
+
+ :return: 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
+
+ :return: 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))
# TODO: check return value
VatExecutor.cmd_from_template(self.node_info, script, **args)
- def set_arp(self, iface_key, ip_address, mac_address):
+ def set_arp(self, iface_key, ip_address, mac_address, vrf=None):
"""Set entry in ARP cache.
:param iface_key: Interface key.
:param ip_address: IP address.
:param mac_address: MAC address.
+ :param vrf: VRF table ID (Optional).
:type iface_key: str
:type ip_address: str
:type mac_address: str
+ :type vrf: int
"""
+ vrf = "vrf {}".format(vrf) if vrf else ''
self.exec_vat('add_ip_neighbor.vat',
sw_if_index=self.get_sw_if_index(iface_key),
- ip_address=ip_address, mac_address=mac_address)
+ ip_address=ip_address, mac_address=mac_address,
+ vrf=vrf)
def set_ip(self, interface, address, prefix_length):
self.exec_vat('add_ip_address.vat',
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):
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(
get_node(node).set_arp(iface_key, ip_address, mac_address)
@staticmethod
- def add_arp_on_dut(node, iface_key, ip_address, mac_address):
+ def add_arp_on_dut(node, iface_key, ip_address, mac_address, vrf=None):
"""Set ARP cache entree on DUT node.
:param node: VPP Node in the topology.
:param iface_key: Interface key.
:param ip_address: IP address of the interface.
:param mac_address: MAC address of the interface.
+ :param vrf: VRF table ID (Optional).
:type node: dict
:type iface_key: str
:type ip_address: str
:type mac_address: str
+ :type vrf: int
"""
- get_node(node).set_arp(iface_key, ip_address, mac_address)
+ get_node(node).set_arp(iface_key, ip_address, mac_address, vrf)