from parameterized import parameterized
import scapy.compat
import scapy.layers.inet6 as inet6
+from scapy.layers.inet import UDP, IP
from scapy.contrib.mpls import MPLS
from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6ND_RS, \
ICMPv6ND_RA, ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \
ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types, \
ICMPv6TimeExceeded, ICMPv6EchoRequest, ICMPv6EchoReply, \
IPv6ExtHdrHopByHop, ICMPv6MLReport2, ICMPv6MLDMultAddrRec
-from scapy.layers.l2 import Ether, Dot1Q
+from scapy.layers.l2 import Ether, Dot1Q, GRE
from scapy.packet import Raw
from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \
in6_mactoifaceid
from six import moves
-from framework import VppTestCase, VppTestRunner
+from framework import VppTestCase, VppTestRunner, tag_run_solo
from util import ppp, ip6_normalize, mk_ll_addr
from vpp_papi import VppEnum
-from vpp_ip import DpoProto, VppIpPuntPolicer, VppIpPuntRedirect
+from vpp_ip import DpoProto, VppIpPuntPolicer, VppIpPuntRedirect, VppIpPathMtu
from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, VppIpMRoute, \
VppMRoutePath, VppMplsIpBind, \
VppMplsRoute, VppMplsTable, VppIpTable, FibPathType, FibPathProto, \
VppIpInterfaceAddress, find_route_in_dump, find_mroute_in_dump, \
- VppIp6LinkLocalAddress
+ VppIp6LinkLocalAddress, VppIpRouteV2
from vpp_neighbor import find_nbr, VppNeighbor
+from vpp_ipip_tun_interface import VppIpIpTunInterface
from vpp_pg_interface import is_ipv6_misc
from vpp_sub_interface import VppSubInterface, VppDot1QSubint
-from vpp_policer import VppPolicer
+from vpp_policer import VppPolicer, PolicerAction
from ipaddress import IPv6Network, IPv6Address
+from vpp_gre_interface import VppGreInterface
+from vpp_teib import VppTeib
AF_INET6 = socket.AF_INET6
self.assertEqual(ip.dst, dip)
+@tag_run_solo
class TestIPv6(TestIPv6ND):
""" IPv6 Test Case """
- @classmethod
- def force_solo(cls):
- return True
-
@classmethod
def setUpClass(cls):
super(TestIPv6, cls).setUpClass()
dst_ip=self.pg0._remote_hosts[3].ip6_ll,
tgt_ip=self.pg0.local_ip6_ll)
+ #
+ # do not respond to a NS for the peer's address
+ #
+ p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
+ IPv6(dst=d,
+ src=self.pg0._remote_hosts[3].ip6_ll) /
+ ICMPv6ND_NS(tgt=self.pg0._remote_hosts[3].ip6_ll) /
+ ICMPv6NDOptSrcLLAddr(
+ lladdr=self.pg0.remote_mac))
+
+ self.send_and_assert_no_replies(self.pg0, p)
+
#
# we should have learned an ND entry for the peer's link-local
# but not inserted a route to it in the FIB
"RS sourced from link-local",
dst_ip=ll)
+ #
+ # Source an RS from a link local address
+ # Ensure suppress also applies to solicited RS
+ #
+ self.pg0.ip6_ra_config(send_unicast=1, suppress=1)
+ ll = mk_ll_addr(self.pg0.remote_mac)
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(dst=self.pg0.local_ip6, src=ll) /
+ ICMPv6ND_RS())
+ pkts = [p]
+ self.send_and_assert_no_replies(self.pg0, pkts,
+ "Suppressed RS from link-local")
+
#
# Send the RS multicast
#
+ self.pg0.ip6_ra_config(no=1, suppress=1) # Reset suppress flag to zero
self.pg0.ip6_ra_config(send_unicast=1)
dmac = in6_getnsmac(inet_pton(AF_INET6, "ff02::2"))
ll = mk_ll_addr(self.pg0.remote_mac)
# If we happen to pick up the periodic RA at this point then so be it,
# it's not an error.
#
- self.pg0.ip6_ra_config(send_unicast=1, suppress=1)
+ self.pg0.ip6_ra_config(send_unicast=1, suppress=0)
p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
IPv6(dst="ff02::2", src="::") /
ICMPv6ND_RS())
i.disable_mpls()
super(TestIP6LoadBalance, self).tearDown()
- def pg_send(self, input, pkts):
- self.vapi.cli("clear trace")
- input.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- def send_and_expect_load_balancing(self, input, pkts, outputs):
- self.pg_send(input, pkts)
- for oo in outputs:
- rx = oo._get_capture(1)
- self.assertNotEqual(0, len(rx))
-
- def send_and_expect_one_itf(self, input, pkts, itf):
- self.pg_send(input, pkts)
- rx = itf.get_capture(len(pkts))
-
def test_ip6_load_balance(self):
""" IPv6 Load-Balancing """
# be guaranteed. But with 64 different packets we do expect some
# balancing. So instead just ensure there is traffic on each link.
#
- self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
- [self.pg1, self.pg2])
+ rx = self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
+ [self.pg1, self.pg2])
+ n_ip_pg0 = len(rx[0])
self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
[self.pg1, self.pg2])
self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts,
[self.pg1, self.pg2])
self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
[self.pg1, self.pg2])
- self.send_and_expect_load_balancing(self.pg0, port_mpls_neos_pkts,
- [self.pg1, self.pg2])
+ rx = self.send_and_expect_load_balancing(self.pg0, port_mpls_neos_pkts,
+ [self.pg1, self.pg2])
+ n_mpls_pg0 = len(rx[0])
+
+ #
+ # change the router ID and expect the distribution changes
+ #
+ self.vapi.set_ip_flow_hash_router_id(router_id=0x11111111)
+
+ rx = self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
+ [self.pg1, self.pg2])
+ self.assertNotEqual(n_ip_pg0, len(rx[0]))
+
+ rx = self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
+ [self.pg1, self.pg2])
+ self.assertNotEqual(n_mpls_pg0, len(rx[0]))
#
# The packets with Entropy label in should not load-balance,
# since the Entropy value is fixed.
#
- self.send_and_expect_one_itf(self.pg0, port_ent_pkts, self.pg1)
+ self.send_and_expect_only(self.pg0, port_ent_pkts, self.pg1)
#
# change the flow hash config so it's only IP src,dst
# - now only the stream with differing source address will
# load-balance
#
- self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, sport=0, dport=0,
- is_ipv6=1)
+ self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, proto=1,
+ sport=0, dport=0, is_ipv6=1)
self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
[self.pg1, self.pg2])
self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
[self.pg1, self.pg2])
- self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2)
+ self.send_and_expect_only(self.pg0, port_ip_pkts, self.pg2)
#
# change the flow hash config back to defaults
#
self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, sport=1, dport=1,
- is_ipv6=1)
+ proto=1, is_ipv6=1)
#
# Recursive prefixes
# inject the packet on pg0 - expect load-balancing across all 4 paths
#
self.vapi.cli("clear trace")
- self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3)
+ self.send_and_expect_only(self.pg0, port_pkts, self.pg3)
-class TestIP6Punt(VppTestCase):
- """ IPv6 Punt Police/Redirect """
-
- @classmethod
- def setUpClass(cls):
- super(TestIP6Punt, cls).setUpClass()
-
- @classmethod
- def tearDownClass(cls):
- super(TestIP6Punt, cls).tearDownClass()
-
- def setUp(self):
- super(TestIP6Punt, self).setUp()
+class IP6PuntSetup(object):
+ """ Setup for IPv6 Punt Police/Redirect """
+ def punt_setup(self):
self.create_pg_interfaces(range(4))
for i in self.pg_interfaces:
i.config_ip6()
i.resolve_ndp()
- def tearDown(self):
- super(TestIP6Punt, self).tearDown()
+ self.pkt = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IPv6(src=self.pg0.remote_ip6,
+ dst=self.pg0.local_ip6) /
+ inet6.TCP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+
+ def punt_teardown(self):
for i in self.pg_interfaces:
i.unconfig_ip6()
i.admin_down()
+
+class TestIP6Punt(IP6PuntSetup, VppTestCase):
+ """ IPv6 Punt Police/Redirect """
+
+ def setUp(self):
+ super(TestIP6Punt, self).setUp()
+ super(TestIP6Punt, self).punt_setup()
+
+ def tearDown(self):
+ super(TestIP6Punt, self).punt_teardown()
+ super(TestIP6Punt, self).tearDown()
+
def test_ip_punt(self):
""" IP6 punt police and redirect """
- p = (Ether(src=self.pg0.remote_mac,
- dst=self.pg0.local_mac) /
- IPv6(src=self.pg0.remote_ip6,
- dst=self.pg0.local_ip6) /
- inet6.TCP(sport=1234, dport=1234) /
- Raw(b'\xa5' * 100))
-
- pkts = p * 1025
+ pkts = self.pkt * 1025
#
# Configure a punt redirect via pg1.
# but not equal to the number sent, since some were policed
#
rx = self.pg1._get_capture(1)
+ stats = policer.get_stats()
+
+ # Single rate policer - expect conform, violate but no exceed
+ self.assertGreater(stats['conform_packets'], 0)
+ self.assertEqual(stats['exceed_packets'], 0)
+ self.assertGreater(stats['violate_packets'], 0)
+
self.assertGreater(len(rx), 0)
self.assertLess(len(rx), len(pkts))
self.assertEqual(str(punts[2].punt.nh), '::')
+class TestIP6PuntHandoff(IP6PuntSetup, VppTestCase):
+ """ IPv6 Punt Police/Redirect """
+ vpp_worker_count = 2
+
+ def setUp(self):
+ super(TestIP6PuntHandoff, self).setUp()
+ super(TestIP6PuntHandoff, self).punt_setup()
+
+ def tearDown(self):
+ super(TestIP6PuntHandoff, self).punt_teardown()
+ super(TestIP6PuntHandoff, self).tearDown()
+
+ def test_ip_punt(self):
+ """ IP6 punt policer thread handoff """
+ pkts = self.pkt * NUM_PKTS
+
+ #
+ # Configure a punt redirect via pg1.
+ #
+ nh_addr = self.pg1.remote_ip6
+ ip_punt_redirect = VppIpPuntRedirect(self, self.pg0.sw_if_index,
+ self.pg1.sw_if_index, nh_addr)
+ ip_punt_redirect.add_vpp_config()
+
+ action_tx = PolicerAction(
+ VppEnum.vl_api_sse2_qos_action_type_t.SSE2_QOS_ACTION_API_TRANSMIT,
+ 0)
+ #
+ # This policer drops no packets, we are just
+ # testing that they get to the right thread.
+ #
+ policer = VppPolicer(self, "ip6-punt", 400, 0, 10, 0, 1,
+ 0, 0, False, action_tx, action_tx, action_tx)
+ policer.add_vpp_config()
+ ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index,
+ is_ip6=True)
+ ip_punt_policer.add_vpp_config()
+
+ for worker in [0, 1]:
+ self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+ if worker == 0:
+ self.logger.debug(self.vapi.cli("show trace max 100"))
+
+ # Combined stats, all threads
+ stats = policer.get_stats()
+
+ # Single rate policer - expect conform, violate but no exceed
+ self.assertGreater(stats['conform_packets'], 0)
+ self.assertEqual(stats['exceed_packets'], 0)
+ self.assertGreater(stats['violate_packets'], 0)
+
+ # Worker 0, should have done all the policing
+ stats0 = policer.get_stats(worker=0)
+ self.assertEqual(stats, stats0)
+
+ # Worker 1, should have handed everything off
+ stats1 = policer.get_stats(worker=1)
+ self.assertEqual(stats1['conform_packets'], 0)
+ self.assertEqual(stats1['exceed_packets'], 0)
+ self.assertEqual(stats1['violate_packets'], 0)
+
+ # Bind the policer to worker 1 and repeat
+ policer.bind_vpp_config(1, True)
+ for worker in [0, 1]:
+ self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+ self.logger.debug(self.vapi.cli("show trace max 100"))
+
+ # The 2 workers should now have policed the same amount
+ stats = policer.get_stats()
+ stats0 = policer.get_stats(worker=0)
+ stats1 = policer.get_stats(worker=1)
+
+ self.assertGreater(stats0['conform_packets'], 0)
+ self.assertEqual(stats0['exceed_packets'], 0)
+ self.assertGreater(stats0['violate_packets'], 0)
+
+ self.assertGreater(stats1['conform_packets'], 0)
+ self.assertEqual(stats1['exceed_packets'], 0)
+ self.assertGreater(stats1['violate_packets'], 0)
+
+ self.assertEqual(stats0['conform_packets'] + stats1['conform_packets'],
+ stats['conform_packets'])
+
+ self.assertEqual(stats0['violate_packets'] + stats1['violate_packets'],
+ stats['violate_packets'])
+
+ # Unbind the policer and repeat
+ policer.bind_vpp_config(1, False)
+ for worker in [0, 1]:
+ self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+ self.logger.debug(self.vapi.cli("show trace max 100"))
+
+ # The policer should auto-bind to worker 0 when packets arrive
+ stats = policer.get_stats()
+ stats0new = policer.get_stats(worker=0)
+ stats1new = policer.get_stats(worker=1)
+
+ self.assertGreater(stats0new['conform_packets'],
+ stats0['conform_packets'])
+ self.assertEqual(stats0new['exceed_packets'], 0)
+ self.assertGreater(stats0new['violate_packets'],
+ stats0['violate_packets'])
+
+ self.assertEqual(stats1, stats1new)
+
+ #
+ # Clean up
+ #
+ ip_punt_policer.remove_vpp_config()
+ policer.remove_vpp_config()
+ ip_punt_redirect.remove_vpp_config()
+
+
class TestIPDeag(VppTestCase):
""" IPv6 Deaggregate Routes """
inet6.UDP(sport=1234, dport=1234) /
Raw(b'\xa5' * 100))
- rx = self.send_and_expect(self.pg0, p_version * NUM_PKTS, self.pg0)
- rx = rx[0]
- icmp = rx[ICMPv6TimeExceeded]
+ rxs = self.send_and_expect_some(self.pg0,
+ p_version * NUM_PKTS,
+ self.pg0)
- # 0: "hop limit exceeded in transit",
- self.assertEqual((icmp.type, icmp.code), (3, 0))
+ for rx in rxs:
+ icmp = rx[ICMPv6TimeExceeded]
+ # 0: "hop limit exceeded in transit",
+ self.assertEqual((icmp.type, icmp.code), (3, 0))
icmpv6_data = '\x0a' * 18
all_0s = "::"
ll2 = "fe80:2::2"
ll3 = "fe80:3::3"
+ VppNeighbor(self,
+ self.pg0.sw_if_index,
+ self.pg0.remote_mac,
+ ll2).add_vpp_config()
+
VppIpInterfaceAddress(self, self.pg0, ll1, 128).add_vpp_config()
#
VppIp6LinkLocalAddress(self, self.pg1, ll3).add_vpp_config()
self.send_and_expect(self.pg1, [p_echo_request_3], self.pg1)
+ def test_ip6_ll_p2p(self):
+ """ IPv6 Link Local P2P (GRE)"""
+
+ self.pg0.config_ip4()
+ self.pg0.resolve_arp()
+ gre_if = VppGreInterface(self,
+ self.pg0.local_ip4,
+ self.pg0.remote_ip4).add_vpp_config()
+ gre_if.admin_up()
+
+ ll1 = "fe80:1::1"
+ ll2 = "fe80:2::2"
+
+ VppIpInterfaceAddress(self, gre_if, ll1, 128).add_vpp_config()
+
+ self.logger.info(self.vapi.cli("sh ip6-ll gre0 fe80:2::2"))
+
+ p_echo_request_1 = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4,
+ dst=self.pg0.local_ip4) /
+ GRE() /
+ IPv6(src=ll2, dst=ll1) /
+ ICMPv6EchoRequest())
+ self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0)
+
+ self.pg0.unconfig_ip4()
+ gre_if.remove_vpp_config()
+
+ def test_ip6_ll_p2mp(self):
+ """ IPv6 Link Local P2MP (GRE)"""
+
+ self.pg0.config_ip4()
+ self.pg0.resolve_arp()
+
+ gre_if = VppGreInterface(
+ self,
+ self.pg0.local_ip4,
+ "0.0.0.0",
+ mode=(VppEnum.vl_api_tunnel_mode_t.
+ TUNNEL_API_MODE_MP)).add_vpp_config()
+ gre_if.admin_up()
+
+ ll1 = "fe80:1::1"
+ ll2 = "fe80:2::2"
+
+ VppIpInterfaceAddress(self, gre_if, ll1, 128).add_vpp_config()
+
+ p_echo_request_1 = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4,
+ dst=self.pg0.local_ip4) /
+ GRE() /
+ IPv6(src=ll2, dst=ll1) /
+ ICMPv6EchoRequest())
+
+ # no route back at this point
+ self.send_and_assert_no_replies(self.pg0, [p_echo_request_1])
+
+ # add teib entry for the peer
+ teib = VppTeib(self, gre_if, ll2, self.pg0.remote_ip4)
+ teib.add_vpp_config()
+
+ self.logger.info(self.vapi.cli("sh ip6-ll gre0 %s" % ll2))
+ self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0)
+
+ # teardown
+ self.pg0.unconfig_ip4()
+
+
+class TestIPv6PathMTU(VppTestCase):
+ """ IPv6 Path MTU """
+
+ def setUp(self):
+ super(TestIPv6PathMTU, self).setUp()
+
+ self.create_pg_interfaces(range(2))
+
+ # setup all interfaces
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip6()
+ i.resolve_ndp()
+
+ def tearDown(self):
+ super(TestIPv6PathMTU, self).tearDown()
+ for i in self.pg_interfaces:
+ i.unconfig_ip6()
+ i.admin_down()
+
+ def test_path_mtu_local(self):
+ """ Path MTU for attached neighbour """
+
+ self.vapi.cli("set log class ip level debug")
+ #
+ # The goal here is not test that fragmentation works correctly,
+ # that's done elsewhere, the intent is to ensure that the Path MTU
+ # settings are honoured.
+ #
+
+ #
+ # IPv6 will only frag locally generated packets, so use tunnelled
+ # packets post encap
+ #
+ tun = VppIpIpTunInterface(
+ self,
+ self.pg1,
+ self.pg1.local_ip6,
+ self.pg1.remote_ip6)
+ tun.add_vpp_config()
+ tun.admin_up()
+ tun.config_ip6()
+
+ # set the interface MTU to a reasonable value
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
+ [2800, 0, 0, 0])
+
+ p_2k = (Ether(dst=self.pg0.local_mac,
+ src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6,
+ dst=tun.remote_ip6) /
+ UDP(sport=1234, dport=5678) /
+ Raw(b'0xa' * 1000))
+ p_1k = (Ether(dst=self.pg0.local_mac,
+ src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6,
+ dst=tun.remote_ip6) /
+ UDP(sport=1234, dport=5678) /
+ Raw(b'0xa' * 600))
+
+ nbr = VppNeighbor(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_mac,
+ self.pg1.remote_ip6).add_vpp_config()
+
+ # this is now the interface MTU frags
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+ # drop the path MTU for this neighbour to below the interface MTU
+ # expect more frags
+ pmtu = VppIpPathMtu(self, self.pg1.remote_ip6, 1300).add_vpp_config()
+
+ # print/format the adj delegate and trackers
+ self.logger.info(self.vapi.cli("sh ip pmtu"))
+ self.logger.info(self.vapi.cli("sh adj 7"))
+
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # increase the path MTU to more than the interface
+ # expect to use the interface MTU
+ pmtu.modify(8192)
+
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+ # go back to an MTU from the path
+ pmtu.modify(1300)
+
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # raise the interface's MTU
+ # should still use that of the path
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
+ [2000, 0, 0, 0])
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # set path high and interface low
+ pmtu.modify(2000)
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
+ [1300, 0, 0, 0])
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # remove the path MTU
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
+ [2800, 0, 0, 0])
+ pmtu.modify(0)
+
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+ def test_path_mtu_remote(self):
+ """ Path MTU for remote neighbour """
+
+ self.vapi.cli("set log class ip level debug")
+ #
+ # The goal here is not test that fragmentation works correctly,
+ # that's done elsewhere, the intent is to ensure that the Path MTU
+ # settings are honoured.
+ #
+ tun_dst = "2001::1"
+
+ route = VppIpRoute(
+ self, tun_dst, 64,
+ [VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index)]).add_vpp_config()
+
+ #
+ # IPv6 will only frag locally generated packets, so use tunnelled
+ # packets post encap
+ #
+ tun = VppIpIpTunInterface(
+ self,
+ self.pg1,
+ self.pg1.local_ip6,
+ tun_dst)
+ tun.add_vpp_config()
+ tun.admin_up()
+ tun.config_ip6()
+
+ # set the interface MTU to a reasonable value
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
+ [2800, 0, 0, 0])
+
+ p_2k = (Ether(dst=self.pg0.local_mac,
+ src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6,
+ dst=tun.remote_ip6) /
+ UDP(sport=1234, dport=5678) /
+ Raw(b'0xa' * 1000))
+ p_1k = (Ether(dst=self.pg0.local_mac,
+ src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6,
+ dst=tun.remote_ip6) /
+ UDP(sport=1234, dport=5678) /
+ Raw(b'0xa' * 600))
+
+ nbr = VppNeighbor(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_mac,
+ self.pg1.remote_ip6).add_vpp_config()
+
+ # this is now the interface MTU frags
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+ # drop the path MTU for this neighbour to below the interface MTU
+ # expect more frags
+ pmtu = VppIpPathMtu(self, tun_dst, 1300).add_vpp_config()
+
+ # print/format the fib entry/dpo
+ self.logger.info(self.vapi.cli("sh ip6 fib 2001::1"))
+
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # increase the path MTU to more than the interface
+ # expect to use the interface MTU
+ pmtu.modify(8192)
+
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+ # go back to an MTU from the path
+ pmtu.modify(1300)
+
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # raise the interface's MTU
+ # should still use that of the path
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
+ [2000, 0, 0, 0])
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # turn the tun_dst into an attached neighbour
+ route.modify([VppRoutePath("::",
+ self.pg1.sw_if_index)])
+ nbr2 = VppNeighbor(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_mac,
+ tun_dst).add_vpp_config()
+
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # add back to not attached
+ nbr2.remove_vpp_config()
+ route.modify([VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index)])
+
+ # set path high and interface low
+ pmtu.modify(2000)
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
+ [1300, 0, 0, 0])
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # remove the path MTU
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
+ [2800, 0, 0, 0])
+ pmtu.remove_vpp_config()
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+
+class TestIPFibSource(VppTestCase):
+ """ IPv6 Table FibSource """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestIPFibSource, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestIPFibSource, cls).tearDownClass()
+
+ def setUp(self):
+ super(TestIPFibSource, self).setUp()
+
+ self.create_pg_interfaces(range(2))
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip6()
+ i.resolve_arp()
+ i.generate_remote_hosts(2)
+ i.configure_ipv6_neighbors()
+
+ def tearDown(self):
+ super(TestIPFibSource, self).tearDown()
+ for i in self.pg_interfaces:
+ i.admin_down()
+ i.unconfig_ip4()
+
+ def test_fib_source(self):
+ """ IP Table FibSource """
+
+ routes = self.vapi.ip_route_v2_dump(0, True)
+
+ # 2 interfaces (4 routes) + 2 specials + 4 neighbours = 10 routes
+ self.assertEqual(len(routes), 10)
+
+ # dump all the sources in the FIB
+ sources = self.vapi.fib_source_dump()
+ for source in sources:
+ if (source.src.name == "API"):
+ api_source = source.src
+ if (source.src.name == "interface"):
+ intf_source = source.src
+ if (source.src.name == "adjacency"):
+ adj_source = source.src
+ if (source.src.name == "special"):
+ special_source = source.src
+ if (source.src.name == "default-route"):
+ dr_source = source.src
+
+ # dump the individual route types
+ routes = self.vapi.ip_route_v2_dump(0, True, src=adj_source.id)
+ self.assertEqual(len(routes), 4)
+ routes = self.vapi.ip_route_v2_dump(0, True, src=intf_source.id)
+ self.assertEqual(len(routes), 4)
+ routes = self.vapi.ip_route_v2_dump(0, True, src=special_source.id)
+ self.assertEqual(len(routes), 1)
+ routes = self.vapi.ip_route_v2_dump(0, True, src=dr_source.id)
+ self.assertEqual(len(routes), 1)
+
+ # add a new soure that'a better than the API
+ self.vapi.fib_source_add(src={'name': "bgp",
+ "priority": api_source.priority - 1})
+
+ # dump all the sources to check our new one is there
+ sources = self.vapi.fib_source_dump()
+
+ for source in sources:
+ if (source.src.name == "bgp"):
+ bgp_source = source.src
+
+ self.assertTrue(bgp_source)
+ self.assertEqual(bgp_source.priority,
+ api_source.priority - 1)
+
+ # add a route with the default API source
+ r1 = VppIpRouteV2(
+ self, "2001::1", 128,
+ [VppRoutePath(self.pg0.remote_ip6,
+ self.pg0.sw_if_index)]).add_vpp_config()
+
+ r2 = VppIpRouteV2(self, "2001::1", 128,
+ [VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index)],
+ src=bgp_source.id).add_vpp_config()
+
+ # ensure the BGP source takes priority
+ p = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst="2001::1") /
+ inet6.UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+
+ self.send_and_expect(self.pg0, [p], self.pg1)
+
+ r2.remove_vpp_config()
+ r1.remove_vpp_config()
+
+ self.assertFalse(find_route(self, "2001::1", 128))
+
+
+class TestIPxAF(VppTestCase):
+ """ IP cross AF """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestIPxAF, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestIPxAF, cls).tearDownClass()
+
+ def setUp(self):
+ super(TestIPxAF, self).setUp()
+
+ self.create_pg_interfaces(range(2))
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip6()
+ i.config_ip4()
+ i.resolve_arp()
+ i.resolve_ndp()
+
+ def tearDown(self):
+ super(TestIPxAF, self).tearDown()
+ for i in self.pg_interfaces:
+ i.admin_down()
+ i.unconfig_ip4()
+ i.unconfig_ip6()
+
+ def test_x_af(self):
+ """ Cross AF routing """
+
+ N_PKTS = 63
+ # a v4 route via a v6 attached next-hop
+ VppIpRoute(
+ self, "1.1.1.1", 32,
+ [VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index)]).add_vpp_config()
+
+ p = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst="1.1.1.1") /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+ rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
+
+ for rx in rxs:
+ self.assertEqual(rx[IP].dst, "1.1.1.1")
+
+ # a v6 route via a v4 attached next-hop
+ VppIpRoute(
+ self, "2001::1", 128,
+ [VppRoutePath(self.pg1.remote_ip4,
+ self.pg1.sw_if_index)]).add_vpp_config()
+
+ p = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst="2001::1") /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+ rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
+
+ for rx in rxs:
+ self.assertEqual(rx[IPv6].dst, "2001::1")
+
+ # a recursive v4 route via a v6 next-hop (from above)
+ VppIpRoute(
+ self, "2.2.2.2", 32,
+ [VppRoutePath("2001::1",
+ 0xffffffff)]).add_vpp_config()
+
+ p = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst="2.2.2.2") /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+ rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
+
+ # a recursive v4 route via a v6 next-hop
+ VppIpRoute(
+ self, "2.2.2.3", 32,
+ [VppRoutePath(self.pg1.remote_ip6,
+ 0xffffffff)]).add_vpp_config()
+
+ p = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst="2.2.2.3") /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+ rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
+
+ # a recursive v6 route via a v4 next-hop
+ VppIpRoute(
+ self, "3001::1", 128,
+ [VppRoutePath(self.pg1.remote_ip4,
+ 0xffffffff)]).add_vpp_config()
+
+ p = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst="3001::1") /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+ rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
+
+ for rx in rxs:
+ self.assertEqual(rx[IPv6].dst, "3001::1")
+
+ VppIpRoute(
+ self, "3001::2", 128,
+ [VppRoutePath("1.1.1.1",
+ 0xffffffff)]).add_vpp_config()
+
+ p = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst="3001::2") /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+ rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
+
+ for rx in rxs:
+ self.assertEqual(rx[IPv6].dst, "3001::2")
+
+
+class TestIPv6Punt(VppTestCase):
+ """ IPv6 Punt Police/Redirect """
+
+ def setUp(self):
+ super(TestIPv6Punt, self).setUp()
+ self.create_pg_interfaces(range(4))
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip6()
+ i.resolve_ndp()
+
+ def tearDown(self):
+ super(TestIPv6Punt, self).tearDown()
+ for i in self.pg_interfaces:
+ i.unconfig_ip6()
+ i.admin_down()
+
+ def test_ip6_punt(self):
+ """ IPv6 punt police and redirect """
+
+ # use UDP packet that have a port we need to explicitly
+ # register to get punted.
+ pt_l4 = VppEnum.vl_api_punt_type_t.PUNT_API_TYPE_L4
+ af_ip6 = VppEnum.vl_api_address_family_t.ADDRESS_IP6
+ udp_proto = VppEnum.vl_api_ip_proto_t.IP_API_PROTO_UDP
+ punt_udp = {
+ 'type': pt_l4,
+ 'punt': {
+ 'l4': {
+ 'af': af_ip6,
+ 'protocol': udp_proto,
+ 'port': 7654,
+ }
+ }
+ }
+
+ self.vapi.set_punt(is_add=1, punt=punt_udp)
+
+ pkts = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
+ UDP(sport=1234, dport=7654) /
+ Raw(b'\xa5' * 100)) * 1025
+
+ #
+ # Configure a punt redirect via pg1.
+ #
+ nh_addr = self.pg1.remote_ip6
+ ip_punt_redirect = VppIpPuntRedirect(self, self.pg0.sw_if_index,
+ self.pg1.sw_if_index, nh_addr)
+ ip_punt_redirect.add_vpp_config()
+
+ self.send_and_expect(self.pg0, pkts, self.pg1)
+
+ #
+ # add a policer
+ #
+ policer = VppPolicer(self, "ip6-punt", 400, 0, 10, 0, rate_type=1)
+ policer.add_vpp_config()
+ ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index,
+ is_ip6=True)
+ ip_punt_policer.add_vpp_config()
+
+ self.vapi.cli("clear trace")
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ #
+ # the number of packet received should be greater than 0,
+ # but not equal to the number sent, since some were policed
+ #
+ rx = self.pg1._get_capture(1)
+
+ stats = policer.get_stats()
+
+ # Single rate policer - expect conform, violate but no exceed
+ self.assertGreater(stats['conform_packets'], 0)
+ self.assertEqual(stats['exceed_packets'], 0)
+ self.assertGreater(stats['violate_packets'], 0)
+
+ self.assertGreater(len(rx), 0)
+ self.assertLess(len(rx), len(pkts))
+
+ #
+ # remove the policer. back to full rx
+ #
+ ip_punt_policer.remove_vpp_config()
+ policer.remove_vpp_config()
+ self.send_and_expect(self.pg0, pkts, self.pg1)
+
+ #
+ # remove the redirect. expect full drop.
+ #
+ ip_punt_redirect.remove_vpp_config()
+ self.send_and_assert_no_replies(self.pg0, pkts,
+ "IP no punt config")
+
+ #
+ # Add a redirect that is not input port selective
+ #
+ ip_punt_redirect = VppIpPuntRedirect(self, 0xffffffff,
+ self.pg1.sw_if_index, nh_addr)
+ ip_punt_redirect.add_vpp_config()
+ self.send_and_expect(self.pg0, pkts, self.pg1)
+ ip_punt_redirect.remove_vpp_config()
+
+ def test_ip6_punt_dump(self):
+ """ IPv6 punt redirect dump"""
+
+ #
+ # Configure a punt redirects
+ #
+ nh_address = self.pg3.remote_ip6
+ ipr_03 = VppIpPuntRedirect(self, self.pg0.sw_if_index,
+ self.pg3.sw_if_index, nh_address)
+ ipr_13 = VppIpPuntRedirect(self, self.pg1.sw_if_index,
+ self.pg3.sw_if_index, nh_address)
+ ipr_23 = VppIpPuntRedirect(self, self.pg2.sw_if_index,
+ self.pg3.sw_if_index, "::")
+ ipr_03.add_vpp_config()
+ ipr_13.add_vpp_config()
+ ipr_23.add_vpp_config()
+
+ #
+ # Dump pg0 punt redirects
+ #
+ self.assertTrue(ipr_03.query_vpp_config())
+ self.assertTrue(ipr_13.query_vpp_config())
+ self.assertTrue(ipr_23.query_vpp_config())
+
+ #
+ # Dump punt redirects for all interfaces
+ #
+ punts = self.vapi.ip_punt_redirect_dump(sw_if_index=0xffffffff,
+ is_ipv6=True)
+ self.assertEqual(len(punts), 3)
+ for p in punts:
+ self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index)
+ self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip6)
+ self.assertEqual(str(punts[2].punt.nh), '::')
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff