from abc import abstractmethod, ABCMeta
import socket
from util import Host, mk_ll_addr
from vpp_neighbor import VppNeighbor
class VppInterface(object):
"""Generic VPP interface."""
__metaclass__ = ABCMeta
@property
def sw_if_index(self):
"""Interface index assigned by VPP."""
return self._sw_if_index
@property
def remote_mac(self):
"""MAC-address of the remote interface "connected" to this interface"""
return self._remote_hosts[0].mac
@property
def local_mac(self):
"""MAC-address of the VPP interface."""
return self._local_mac
@property
def local_ip4(self):
"""Local IPv4 address on VPP interface (string)."""
return self._local_ip4
@property
def local_ip4n(self):
"""Local IPv4 address - raw, suitable as API parameter."""
return socket.inet_pton(socket.AF_INET, self._local_ip4)
@property
def remote_ip4(self):
"""IPv4 address of remote peer "connected" to this interface."""
return self._remote_hosts[0].ip4
@property
def remote_ip4n(self):
"""IPv4 address of remote peer - raw, suitable as API parameter."""
return socket.inet_pton(socket.AF_INET, self.remote_ip4)
@property
def local_ip6(self):
"""Local IPv6 address on VPP interface (string)."""
return self._local_ip6
@property
def local_ip6n(self):
"""Local IPv6 address - raw, suitable as API parameter."""
return socket.inet_pton(socket.AF_INET6, self.local_ip6)
@property
def remote_ip6(self):
"""IPv6 address of remote peer "connected" to this interface."""
return self._remote_hosts[0].ip6
@property
def remote_ip6n(self):
"""IPv6 address of remote peer - raw, suitable as API parameter"""
return socket.inet_pton(socket.AF_INET6, self.remote_ip6)
@property
def local_ip6_ll(self):
"""Local IPv6 linnk-local address on VPP interface (string)."""
return self._local_ip6_ll
@property
def local_ip6n_ll(self):
"""Local IPv6 link-local address - raw, suitable as API parameter."""
return self._local_ip6n_ll
@property
def remote_ip6_ll(self):
"""Link-local IPv6 address of remote peer
"connected" to this interface."""
return self._remote_ip6_ll
@property
def remote_ip6n_ll(self):
"""Link-local IPv6 address of remote peer
- raw, suitable as API parameter"""
return self._remote_ip6n_ll
@property
def name(self):
"""Name of the interface."""
return self._name
@property
def dump(self):
"""RAW result of sw_interface_dump for this interface."""
return self._dump
@property
def test(self):
"""Test case creating this interface."""
return self._test
@property
def remote_hosts(self):
"""Remote hosts list"""
return self._remote_hosts
@remote_hosts.setter
def remote_hosts(self, value):
"""
:param list value: List of remote hosts.
"""
self._remote_hosts = value
self._hosts_by_mac = {}
self._hosts_by_ip4 = {}
self._hosts_by_ip6 = {}
for host in self._remote_hosts:
self._hosts_by_mac[host.mac] = host
self._hosts_by_ip4[host.ip4] = host
self._hosts_by_ip6[host.ip6] = host
def host_by_mac(self, mac):
"""
:param mac: MAC address to find host by.
:return: Host object assigned to interface.
"""
return self._hosts_by_mac[mac]
def host_by_ip4(self, ip):
"""
:param ip: IPv4 address to find host by.
:return: Host object assigned to interface.
"""
return self._hosts_by_ip4[ip]
def host_by_ip6(self, ip):
"""
:param ip: IPv6 address to find host by.
:return: Host object assigned to interface.
"""
return self._hosts_by_ip6[ip]
def generate_remote_hosts(self, count=1):
"""Generate and add remote hosts for the interface.
:param int count: Number of generated remote hosts.
"""
self._remote_hosts = []
self._hosts_by_mac = {}
self._hosts_by_ip4 = {}
self._hosts_by_ip6 = {}
for i in range(
2, count + 2): # 0: network address, 1: local vpp address
mac = "02:%02x:00:00:ff:%02x" % (self.sw_if_index, i)
ip4 = "172.16.%u.%u" % (self.sw_if_index, i)
ip6 = "fd01:%x::%x" % (self.sw_if_index, i)
ip6_ll = mk_ll_addr(mac)
host = Host(mac, ip4, ip6, ip6_ll)
self._remote_hosts.append(host)
self._hosts_by_mac[mac] = host
self._hosts_by_ip4[ip4] = host
self._hosts_by_ip6[ip6] = host
@abstractmethod
def __init__(self, test):
self._test = test
self._remote_hosts = []
self._hosts_by_mac = {}
self._hosts_by_ip4 = {}
self._hosts_by_ip6 = {}
self.generate_remote_hosts()
self._local_ip4 = "172.16.%u.1" % self.sw_if_index
self._local_ip4n = socket.inet_pton(soc