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# Copyright (c) <current-year> <your-organization>
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
vppapitestplugins_LTLIBRARIES += nat_test_plugin.la
vppplugins_LTLIBRARIES += nat_plugin.la
nat_plugin_la_SOURCES = nat/nat.c \
nat/nat_api.c \
nat/in2out.c \
nat/out2in.c \
nat/nat_plugin.api.h \
nat/nat_ipfix_logging.c \
nat/nat_det.c \
nat/nat_reass.c \
nat/nat_dpo.c \
nat/nat44_cli.c \
nat/nat64.c \
nat/nat64_cli.c \
nat/nat64_in2out.c \
nat/nat64_out2in.c \
nat/nat64_db.c \
nat/dslite_dpo.c \
nat/dslite.c \
nat/dslite_in2out.c \
nat/dslite_out2in.c \
nat/dslite_cli.c \
nat/dslite_ce_encap.c \
nat/dslite_ce_decap.c \
nat/nat66.c \
nat/nat66_cli.c \
nat/nat66_in2out.c \
nat/nat66_out2in.c
API_FILES += nat/nat.api
nobase_apiinclude_HEADERS += \
nat/nat_all_api_h.h \
nat/nat_msg_enum.h \
nat/nat.api.h
nat_test_plugin_la_SOURCES = \
nat/nat_test.c nat/nat_plugin.api.h
# vi:syntax=automake
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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(socket.AF_INET, self.local_ip4)
self._local_ip4_subnet = "172.16.%u.0" % self.sw_if_index
self._local_ip4n_subnet = socket.inet_pton(socket.AF_INET,
self._local_ip4_subnet)
self._local_ip4_bcast = "172.16.%u.255" % self.sw_if_index
self._local_ip4n_bcast = socket.inet_pton(socket.AF_INET,
self._local_ip4_bcast)
self.local_ip4_prefix_len = 24
self.has_ip4_config = False
self.ip4_table_id = 0
self._local_ip6 = "fd01:%x::1" % self.sw_if_index
self._local_ip6n = socket.inet_pton(socket.AF_INET6, self.local_ip6)
self.local_ip6_prefix_len = 64
self.has_ip6_config = False
self.ip6_table_id = 0
r = self.test.vapi.sw_interface_dump()
for intf in r:
if intf.sw_if_index == self.sw_if_index:
self._name = intf.interface_name.split(b'\0', 1)[0]
self._local_mac = \
':'.join(intf.l2_address.encode('hex')[i:i + 2]
for i in range(0, 12, 2))
self._dump = intf
break
else:
raise Exception(
"Could not find interface with sw_if_index %d "
"in interface dump %s" %
(self.sw_if_index, repr(r)))
self._local_ip6_ll = mk_ll_addr(self.local_mac)
self._local_ip6n_ll = socket.inet_pton(socket.AF_INET6,
self.local_ip6_ll)
self._remote_ip6_ll = mk_ll_addr(self.remote_mac)
self._remote_ip6n_ll = socket.inet_pton(socket.AF_INET6,
self.remote_ip6_ll)
def config_ip4(self):
"""Configure IPv4 address on the VPP interface."""
self.test.vapi.sw_interface_add_del_address(
self.sw_if_index, self.local_ip4n, self.local_ip4_prefix_len)
self.has_ip4_config = True
def unconfig_ip4(self):
"""Remove IPv4 address on the VPP interface."""
try:
if self.has_ip4_config:
self.test.vapi.sw_interface_add_del_address(
self.sw_if_index,
self.local_ip4n,
self.local_ip4_prefix_len,
is_add=0)
except AttributeError:
self.has_ip4_config = False
self.has_ip4_config = False
def configure_ipv4_neighbors(self):
"""For every remote host assign neighbor's MAC to IPv4 addresses.
:param vrf_id: The FIB table / VRF ID. (Default value = 0)
"""
for host in self._remote_hosts:
macn = host.mac.replace(":", "").decode('hex')
ipn = host.ip4n
self.test.vapi.ip_neighbor_add_del(
self.sw_if_index, macn, ipn)
def config_ip6(self):
"""Configure IPv6 address on the VPP interface."""
self.test.vapi.sw_interface_add_del_address(
self.sw_if_index, self._local_ip6n, self.local_ip6_prefix_len,
is_ipv6=1)
self.has_ip6_config = True
def unconfig_ip6(self):
"""Remove IPv6 address on the VPP interface."""
try:
if self.has_ip6_config:
self.test.vapi.sw_interface_add_del_address(
self.sw_if_index,
self.local_ip6n,
self.local_ip6_prefix_len,
is_ipv6=1, is_add=0)
except AttributeError:
self.has_ip6_config = False
self.has_ip6_config = False
def configure_ipv6_neighbors(self):
"""For every remote host assign neighbor's MAC to IPv6 addresses.
:param vrf_id: The FIB table / VRF ID. (Default value = 0)
"""
for host in self._remote_hosts:
macn = host.mac.replace(":", "").decode('hex')
ipn = host.ip6n
self.test.vapi.ip_neighbor_add_del(
self.sw_if_index, macn, ipn, is_ipv6=1)
def unconfig(self):
"""Unconfigure IPv6 and IPv4 address on the VPP interface."""
self.unconfig_ip4()
self.unconfig_ip6()
def set_table_ip4(self, table_id):
"""Set the interface in a IPv4 Table.
.. note:: Must be called before configuring IP4 addresses.
"""
self.ip4_table_id = table_id
self.test.vapi.sw_interface_set_table(
self.sw_if_index, 0, self.ip4_table_id)
def set_table_ip6(self, table_id):
"""Set the interface in a IPv6 Table.
.. note:: Must be called before configuring IP6 addresses.
"""
self.ip6_table_id = table_id
self.test.vapi.sw_interface_set_table(
self.sw_if_index, 1, self.ip6_table_id)
def disable_ipv6_ra(self):
"""Configure IPv6 RA suppress on the VPP interface."""
self.test.vapi.sw_interface_ra_suppress(self.sw_if_index)
def ip6_ra_config(self, no=0, suppress=0, send_unicast=0):
"""Configure IPv6 RA suppress on the VPP interface."""
self.test.vapi.ip6_sw_interface_ra_config(self.sw_if_index,
no,
suppress,
send_unicast)
def ip6_ra_prefix(self, address, address_length, is_no=0,
off_link=0, no_autoconfig=0, use_default=0):
"""Configure IPv6 RA suppress on the VPP interface."""
self.test.vapi.ip6_sw_interface_ra_prefix(self.sw_if_index,
address,
address_length,
is_no=is_no,
off_link=off_link,
no_autoconfig=no_autoconfig,
use_default=use_default)
def admin_up(self):
"""Put interface ADMIN-UP."""
self.test.vapi.sw_interface_set_flags(self.sw_if_index,
admin_up_down=1)
def admin_down(self):
"""Put interface ADMIN-down."""
self.test.vapi.sw_interface_set_flags(self.sw_if_index,
admin_up_down=0)
def ip6_enable(self):
"""IPv6 Enable interface"""
self.test.vapi.ip6_sw_interface_enable_disable(self.sw_if_index,
enable=1)
def ip6_disable(self):
"""Put interface ADMIN-DOWN."""
self.test.vapi.ip6_sw_interface_enable_disable(self.sw_if_index,
enable=0)
def add_sub_if(self, sub_if):
"""Register a sub-interface with this interface.
:param sub_if: sub-interface
"""
if not hasattr(self, 'sub_if'):
self.sub_if = sub_if
else:
if isinstance(self.sub_if, list):
self.sub_if.append(sub_if)
else:
self.sub_if = sub_if
def enable_mpls(self):
"""Enable MPLS on the VPP interface."""
self.test.vapi.sw_interface_enable_disable_mpls(
self.sw_if_index)
def disable_mpls(self):
"""Enable MPLS on the VPP interface."""
self.test.vapi.sw_interface_enable_disable_mpls(
self.sw_if_index, 0)
def is_ip4_entry_in_fib_dump(self, dump):
for i in dump:
if i.address == self.local_ip4n and \
i.address_length == self.local_ip4_prefix_len and \
i.table_id == self.ip4_table_id:
return True
return False
def set_unnumbered(self, ip_sw_if_index):
""" Set the interface to unnumbered via ip_sw_if_index """
self.test.vapi.sw_interface_set_unnumbered(
self.sw_if_index,
ip_sw_if_index)
def unset_unnumbered(self, ip_sw_if_index):
""" Unset the interface to unnumbered via ip_sw_if_index """
self.test.vapi.sw_interface_set_unnumbered(
self.sw_if_index,
ip_sw_if_index,
is_add=0)
def set_proxy_arp(self, enable=1):
""" Set the interface to enable/disable Proxy ARP """
self.test.vapi.proxy_arp_intfc_enable_disable(
self.sw_if_index,
enable)
def query_vpp_config(self):
dump = self.test.vapi.sw_interface_dump()
return self.is_interface_config_in_dump(dump)
def is_interface_config_in_dump(self, dump):
for i in dump:
if i.interface_name.rstrip(' \t\r\n\0') == self.name and \
i.sw_if_index == self.sw_if_index:
return True
else:
return False
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