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vpp/test/test_ip_mcast.py
Neale Ranns adb17a813c fib tests: IP multicast over GRE 
Type: feature

Change-Id: I1632ff23b1bf6d91aa3406c95ebd6ef0aa595f35
Signed-off-by: Neale Ranns <nranns@cisco.com>
2019-08-07 08:42:17 +00:00

951 lines
32 KiB
Python
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#!/usr/bin/env python
import unittest
from framework import VppTestCase, VppTestRunner
from vpp_ip import DpoProto
from vpp_ip_route import VppIpMRoute, VppMRoutePath, VppMFibSignal, \
MRouteItfFlags, MRouteEntryFlags, VppIpTable, FibPathProto
from vpp_gre_interface import VppGreInterface
from scapy.packet import Raw
from scapy.layers.l2 import Ether, GRE
from scapy.layers.inet import IP, UDP, getmacbyip
from scapy.layers.inet6 import IPv6, getmacbyip6
#
# The number of packets sent is set to 91 so that when we replicate more than 3
# times, which we do for some entries, we will generate more than 256 packets
# to the next node in the VLIB graph. Thus we are testing the code's
# correctness handling this over-flow.
# It's also an odd number so we hit any single loops.
#
N_PKTS_IN_STREAM = 91
class TestMFIB(VppTestCase):
""" MFIB Test Case """
@classmethod
def setUpClass(cls):
super(TestMFIB, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestMFIB, cls).tearDownClass()
def setUp(self):
super(TestMFIB, self).setUp()
def test_mfib(self):
""" MFIB Unit Tests """
error = self.vapi.cli("test mfib")
if error:
self.logger.critical(error)
self.assertNotIn("Failed", error)
class TestIPMcast(VppTestCase):
""" IP Multicast Test Case """
@classmethod
def setUpClass(cls):
super(TestIPMcast, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestIPMcast, cls).tearDownClass()
def setUp(self):
super(TestIPMcast, self).setUp()
# create 8 pg interfaces
self.create_pg_interfaces(range(9))
# setup interfaces
for i in self.pg_interfaces[:8]:
i.admin_up()
i.config_ip4()
i.config_ip6()
i.resolve_arp()
i.resolve_ndp()
# one more in a vrf
tbl4 = VppIpTable(self, 10)
tbl4.add_vpp_config()
self.pg8.set_table_ip4(10)
self.pg8.config_ip4()
tbl6 = VppIpTable(self, 10, is_ip6=1)
tbl6.add_vpp_config()
self.pg8.set_table_ip6(10)
self.pg8.config_ip6()
def tearDown(self):
for i in self.pg_interfaces:
i.unconfig_ip4()
i.unconfig_ip6()
i.admin_down()
self.pg8.set_table_ip4(0)
self.pg8.set_table_ip6(0)
super(TestIPMcast, self).tearDown()
def create_stream_ip4(self, src_if, src_ip, dst_ip, payload_size=0):
pkts = []
# default to small packet sizes
p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
IP(src=src_ip, dst=dst_ip) /
UDP(sport=1234, dport=1234))
if not payload_size:
payload_size = 64 - len(p)
p = p / Raw('\xa5' * payload_size)
for i in range(0, N_PKTS_IN_STREAM):
pkts.append(p)
return pkts
def create_stream_ip6(self, src_if, src_ip, dst_ip):
pkts = []
for i in range(0, N_PKTS_IN_STREAM):
info = self.create_packet_info(src_if, src_if)
payload = self.info_to_payload(info)
p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
IPv6(src=src_ip, dst=dst_ip) /
UDP(sport=1234, dport=1234) /
Raw(payload))
info.data = p.copy()
pkts.append(p)
return pkts
def verify_filter(self, capture, sent):
if not len(capture) == len(sent):
# filter out any IPv6 RAs from the capture
for p in capture:
if (p.haslayer(IPv6)):
capture.remove(p)
return capture
def verify_capture_ip4(self, rx_if, sent, dst_mac=None):
rxd = rx_if.get_capture(len(sent))
try:
capture = self.verify_filter(rxd, sent)
self.assertEqual(len(capture), len(sent))
for i in range(len(capture)):
tx = sent[i]
rx = capture[i]
eth = rx[Ether]
self.assertEqual(eth.type, 0x800)
tx_ip = tx[IP]
rx_ip = rx[IP]
if dst_mac is None:
dst_mac = getmacbyip(rx_ip.dst)
# check the MAC address on the RX'd packet is correctly formed
self.assertEqual(eth.dst, dst_mac)
self.assertEqual(rx_ip.src, tx_ip.src)
self.assertEqual(rx_ip.dst, tx_ip.dst)
# IP processing post pop has decremented the TTL
self.assertEqual(rx_ip.ttl + 1, tx_ip.ttl)
except:
raise
def verify_capture_ip6(self, rx_if, sent):
capture = rx_if.get_capture(len(sent))
self.assertEqual(len(capture), len(sent))
for i in range(len(capture)):
tx = sent[i]
rx = capture[i]
eth = rx[Ether]
self.assertEqual(eth.type, 0x86DD)
tx_ip = tx[IPv6]
rx_ip = rx[IPv6]
# check the MAC address on the RX'd packet is correctly formed
self.assertEqual(eth.dst, getmacbyip6(rx_ip.dst))
self.assertEqual(rx_ip.src, tx_ip.src)
self.assertEqual(rx_ip.dst, tx_ip.dst)
# IP processing post pop has decremented the TTL
self.assertEqual(rx_ip.hlim + 1, tx_ip.hlim)
def test_ip_mcast(self):
""" IP Multicast Replication """
#
# a stream that matches the default route. gets dropped.
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "232.1.1.1")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.pg0.assert_nothing_captured(
remark="IP multicast packets forwarded on default route")
#
# A (*,G).
# one accepting interface, pg0, 7 forwarding interfaces
# many forwarding interfaces test the case where the replicate DPO
# needs to use extra cache lines for the buckets.
#
route_232_1_1_1 = VppIpMRoute(
self,
"0.0.0.0",
"232.1.1.1", 32,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
VppMRoutePath(self.pg2.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
VppMRoutePath(self.pg3.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
VppMRoutePath(self.pg4.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
VppMRoutePath(self.pg5.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
VppMRoutePath(self.pg6.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
VppMRoutePath(self.pg7.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
route_232_1_1_1.add_vpp_config()
#
# An (S,G).
# one accepting interface, pg0, 2 forwarding interfaces
#
route_1_1_1_1_232_1_1_1 = VppIpMRoute(
self,
"1.1.1.1",
"232.1.1.1", 27, # any grp-len is ok when src is set
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
VppMRoutePath(self.pg2.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
route_1_1_1_1_232_1_1_1.add_vpp_config()
#
# An (S,G).
# one accepting interface, pg0, 2 forwarding interfaces
# that use unicast next-hops
#
route_1_1_1_1_232_1_1_2 = VppIpMRoute(
self,
"1.1.1.1",
"232.1.1.2", 64,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
nh=self.pg1.remote_ip4),
VppMRoutePath(self.pg2.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
nh=self.pg2.remote_ip4)])
route_1_1_1_1_232_1_1_2.add_vpp_config()
#
# An (*,G/m).
# one accepting interface, pg0, 1 forwarding interfaces
#
route_232 = VppIpMRoute(
self,
"0.0.0.0",
"232.0.0.0", 8,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
route_232.add_vpp_config()
#
# a stream that matches the route for (1.1.1.1,232.1.1.1)
# small packets
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "232.1.1.1")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.assertEqual(route_1_1_1_1_232_1_1_1.get_stats()['packets'],
len(tx))
# We expect replications on Pg1->7
self.verify_capture_ip4(self.pg1, tx)
self.verify_capture_ip4(self.pg2, tx)
# no replications on Pg0
self.pg0.assert_nothing_captured(
remark="IP multicast packets forwarded on PG0")
self.pg3.assert_nothing_captured(
remark="IP multicast packets forwarded on PG3")
#
# a stream that matches the route for (1.1.1.1,232.1.1.1)
# large packets
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "232.1.1.1",
payload_size=1024)
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg1->7
self.verify_capture_ip4(self.pg1, tx)
self.verify_capture_ip4(self.pg2, tx)
self.assertEqual(route_1_1_1_1_232_1_1_1.get_stats()['packets'],
2*len(tx))
# no replications on Pg0
self.pg0.assert_nothing_captured(
remark="IP multicast packets forwarded on PG0")
self.pg3.assert_nothing_captured(
remark="IP multicast packets forwarded on PG3")
#
# a stream to the unicast next-hops
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "232.1.1.2")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg1->7
self.verify_capture_ip4(self.pg1, tx, dst_mac=self.pg1.remote_mac)
self.verify_capture_ip4(self.pg2, tx, dst_mac=self.pg2.remote_mac)
# no replications on Pg0 nor pg3
self.pg0.assert_nothing_captured(
remark="IP multicast packets forwarded on PG0")
self.pg3.assert_nothing_captured(
remark="IP multicast packets forwarded on PG3")
#
# a stream that matches the route for (*,232.0.0.0/8)
# Send packets with the 9th bit set so we test the correct clearing
# of that bit in the mac rewrite
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "232.255.255.255")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg1 only
self.verify_capture_ip4(self.pg1, tx)
self.assertEqual(route_232.get_stats()['packets'], len(tx))
# no replications on Pg0, Pg2 not Pg3
self.pg0.assert_nothing_captured(
remark="IP multicast packets forwarded on PG0")
self.pg2.assert_nothing_captured(
remark="IP multicast packets forwarded on PG2")
self.pg3.assert_nothing_captured(
remark="IP multicast packets forwarded on PG3")
#
# a stream that matches the route for (*,232.1.1.1)
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip4(self.pg0, "1.1.1.2", "232.1.1.1")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg1->7
self.verify_capture_ip4(self.pg1, tx)
self.verify_capture_ip4(self.pg2, tx)
self.verify_capture_ip4(self.pg3, tx)
self.verify_capture_ip4(self.pg4, tx)
self.verify_capture_ip4(self.pg5, tx)
self.verify_capture_ip4(self.pg6, tx)
self.verify_capture_ip4(self.pg7, tx)
# no replications on Pg0
self.pg0.assert_nothing_captured(
remark="IP multicast packets forwarded on PG0")
def test_ip6_mcast(self):
""" IPv6 Multicast Replication """
#
# a stream that matches the default route. gets dropped.
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip6(self.pg0, "2001::1", "ff01::1")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.pg0.assert_nothing_captured(
remark="IPv6 multicast packets forwarded on default route")
#
# A (*,G).
# one accepting interface, pg0, 3 forwarding interfaces
#
route_ff01_1 = VppIpMRoute(
self,
"::",
"ff01::1", 128,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT,
proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
VppMRoutePath(self.pg2.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
VppMRoutePath(self.pg3.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)])
route_ff01_1.add_vpp_config()
#
# An (S,G).
# one accepting interface, pg0, 2 forwarding interfaces
#
route_2001_ff01_1 = VppIpMRoute(
self,
"2001::1",
"ff01::1", 0, # any grp-len is ok when src is set
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT,
proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
VppMRoutePath(self.pg2.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)])
route_2001_ff01_1.add_vpp_config()
#
# An (*,G/m).
# one accepting interface, pg0, 1 forwarding interface
#
route_ff01 = VppIpMRoute(
self,
"::",
"ff01::", 16,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT,
proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)])
route_ff01.add_vpp_config()
#
# a stream that matches the route for (*, ff01::/16)
# sent on the non-accepting interface
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip6(self.pg1, "2002::1", "ff01:2::255")
self.send_and_assert_no_replies(self.pg1, tx, "RPF miss")
#
# a stream that matches the route for (*, ff01::/16)
# sent on the accepting interface
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip6(self.pg0, "2002::1", "ff01:2::255")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg1
self.verify_capture_ip6(self.pg1, tx)
# no replications on Pg0, Pg3
self.pg0.assert_nothing_captured(
remark="IP multicast packets forwarded on PG0")
self.pg2.assert_nothing_captured(
remark="IP multicast packets forwarded on PG2")
self.pg3.assert_nothing_captured(
remark="IP multicast packets forwarded on PG3")
#
# Bounce the interface and it should still work
#
self.pg1.admin_down()
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.pg1.assert_nothing_captured(
remark="IP multicast packets forwarded on down PG1")
self.pg1.admin_up()
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.verify_capture_ip6(self.pg1, tx)
#
# a stream that matches the route for (*,ff01::1)
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip6(self.pg0, "2002::2", "ff01::1")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg1, 2, 3.
self.verify_capture_ip6(self.pg1, tx)
self.verify_capture_ip6(self.pg2, tx)
self.verify_capture_ip6(self.pg3, tx)
# no replications on Pg0
self.pg0.assert_nothing_captured(
remark="IPv6 multicast packets forwarded on PG0")
#
# a stream that matches the route for (2001::1, ff00::1)
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip6(self.pg0, "2001::1", "ff01::1")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg1, 2,
self.verify_capture_ip6(self.pg1, tx)
self.verify_capture_ip6(self.pg2, tx)
# no replications on Pg0, Pg3
self.pg0.assert_nothing_captured(
remark="IP multicast packets forwarded on PG0")
self.pg3.assert_nothing_captured(
remark="IP multicast packets forwarded on PG3")
def _mcast_connected_send_stream(self, dst_ip):
self.vapi.cli("clear trace")
tx = self.create_stream_ip4(self.pg0,
self.pg0.remote_ip4,
dst_ip)
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg1.
self.verify_capture_ip4(self.pg1, tx)
return tx
def test_ip_mcast_connected(self):
""" IP Multicast Connected Source check """
#
# A (*,G).
# one accepting interface, pg0, 1 forwarding interfaces
#
route_232_1_1_1 = VppIpMRoute(
self,
"0.0.0.0",
"232.1.1.1", 32,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
route_232_1_1_1.add_vpp_config()
route_232_1_1_1.update_entry_flags(
MRouteEntryFlags.MFIB_ENTRY_FLAG_CONNECTED)
#
# Now the (*,G) is present, send from connected source
#
tx = self._mcast_connected_send_stream("232.1.1.1")
#
# Constrct a representation of the signal we expect on pg0
#
signal_232_1_1_1_itf_0 = VppMFibSignal(self,
route_232_1_1_1,
self.pg0.sw_if_index,
tx[0])
#
# read the only expected signal
#
signals = self.vapi.mfib_signal_dump()
self.assertEqual(1, len(signals))
signal_232_1_1_1_itf_0.compare(signals[0])
#
# reading the signal allows for the generation of another
# so send more packets and expect the next signal
#
tx = self._mcast_connected_send_stream("232.1.1.1")
signals = self.vapi.mfib_signal_dump()
self.assertEqual(1, len(signals))
signal_232_1_1_1_itf_0.compare(signals[0])
#
# A Second entry with connected check
# one accepting interface, pg0, 1 forwarding interfaces
#
route_232_1_1_2 = VppIpMRoute(
self,
"0.0.0.0",
"232.1.1.2", 32,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
route_232_1_1_2.add_vpp_config()
route_232_1_1_2.update_entry_flags(
MRouteEntryFlags.MFIB_ENTRY_FLAG_CONNECTED)
#
# Send traffic to both entries. One read should net us two signals
#
signal_232_1_1_2_itf_0 = VppMFibSignal(self,
route_232_1_1_2,
self.pg0.sw_if_index,
tx[0])
tx = self._mcast_connected_send_stream("232.1.1.1")
tx2 = self._mcast_connected_send_stream("232.1.1.2")
#
# read the only expected signal
#
signals = self.vapi.mfib_signal_dump()
self.assertEqual(2, len(signals))
signal_232_1_1_1_itf_0.compare(signals[1])
signal_232_1_1_2_itf_0.compare(signals[0])
route_232_1_1_1.update_entry_flags(
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE)
route_232_1_1_2.update_entry_flags(
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE)
def test_ip_mcast_signal(self):
""" IP Multicast Signal """
#
# A (*,G).
# one accepting interface, pg0, 1 forwarding interfaces
#
route_232_1_1_1 = VppIpMRoute(
self,
"0.0.0.0",
"232.1.1.1", 32,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
route_232_1_1_1.add_vpp_config()
route_232_1_1_1.update_entry_flags(
MRouteEntryFlags.MFIB_ENTRY_FLAG_SIGNAL)
#
# Now the (*,G) is present, send from connected source
#
tx = self._mcast_connected_send_stream("232.1.1.1")
#
# Constrct a representation of the signal we expect on pg0
#
signal_232_1_1_1_itf_0 = VppMFibSignal(self,
route_232_1_1_1,
self.pg0.sw_if_index,
tx[0])
#
# read the only expected signal
#
signals = self.vapi.mfib_signal_dump()
self.assertEqual(1, len(signals))
signal_232_1_1_1_itf_0.compare(signals[0])
#
# reading the signal allows for the generation of another
# so send more packets and expect the next signal
#
tx = self._mcast_connected_send_stream("232.1.1.1")
signals = self.vapi.mfib_signal_dump()
self.assertEqual(1, len(signals))
signal_232_1_1_1_itf_0.compare(signals[0])
#
# Set the negate-signal on the accepting interval - the signals
# should stop
#
route_232_1_1_1.update_path_flags(
self.pg0.sw_if_index,
(MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT |
MRouteItfFlags.MFIB_ITF_FLAG_NEGATE_SIGNAL))
self.vapi.cli("clear trace")
tx = self._mcast_connected_send_stream("232.1.1.1")
signals = self.vapi.mfib_signal_dump()
self.assertEqual(0, len(signals))
#
# Clear the SIGNAL flag on the entry and the signals should
# come back since the interface is still NEGATE-SIGNAL
#
route_232_1_1_1.update_entry_flags(
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE)
tx = self._mcast_connected_send_stream("232.1.1.1")
signals = self.vapi.mfib_signal_dump()
self.assertEqual(1, len(signals))
signal_232_1_1_1_itf_0.compare(signals[0])
#
# Lastly remove the NEGATE-SIGNAL from the interface and the
# signals should stop
#
route_232_1_1_1.update_path_flags(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT)
tx = self._mcast_connected_send_stream("232.1.1.1")
signals = self.vapi.mfib_signal_dump()
self.assertEqual(0, len(signals))
def test_ip_mcast_vrf(self):
""" IP Multicast Replication in non-default table"""
#
# An (S,G).
# one accepting interface, pg0, 2 forwarding interfaces
#
route_1_1_1_1_232_1_1_1 = VppIpMRoute(
self,
"1.1.1.1",
"232.1.1.1", 64,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg8.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
VppMRoutePath(self.pg2.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)],
table_id=10)
route_1_1_1_1_232_1_1_1.add_vpp_config()
#
# a stream that matches the route for (1.1.1.1,232.1.1.1)
# small packets
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip4(self.pg8, "1.1.1.1", "232.1.1.1")
self.pg8.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg1 & 2
self.verify_capture_ip4(self.pg1, tx)
self.verify_capture_ip4(self.pg2, tx)
def test_ip_mcast_gre(self):
""" IP Multicast Replication over GRE"""
gre_if_1 = VppGreInterface(
self,
self.pg1.local_ip4,
self.pg1.remote_ip4).add_vpp_config()
gre_if_2 = VppGreInterface(
self,
self.pg2.local_ip4,
self.pg2.remote_ip4).add_vpp_config()
gre_if_3 = VppGreInterface(
self,
self.pg3.local_ip4,
self.pg3.remote_ip4).add_vpp_config()
gre_if_1.admin_up()
gre_if_1.config_ip4()
gre_if_2.admin_up()
gre_if_2.config_ip4()
gre_if_3.admin_up()
gre_if_3.config_ip4()
#
# An (S,G).
# one accepting interface, pg0, 2 forwarding interfaces
#
route_1_1_1_1_232_1_1_1 = VppIpMRoute(
self,
"1.1.1.1",
"232.2.2.2", 64,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(gre_if_1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
VppMRoutePath(gre_if_2.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
VppMRoutePath(gre_if_3.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
route_1_1_1_1_232_1_1_1.add_vpp_config()
#
# a stream that matches the route for (1.1.1.1,232.2.2.2)
# small packets
#
tx = (Ether(dst=self.pg1.local_mac,
src=self.pg1.remote_mac) /
IP(src=self.pg1.remote_ip4,
dst=self.pg1.local_ip4) /
GRE() /
IP(src="1.1.1.1", dst="232.2.2.2") /
UDP(sport=1234, dport=1234) /
Raw('\a5' * 64)) * 63
self.vapi.cli("clear trace")
self.pg1.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg2 & 3
# check the encap headers are as expected based on the egress tunnel
rxs = self.pg2.get_capture(len(tx))
for rx in rxs:
self.assertEqual(rx[IP].src, gre_if_2.t_src)
self.assertEqual(rx[IP].dst, gre_if_2.t_dst)
self.assert_packet_checksums_valid(rx)
rxs = self.pg3.get_capture(len(tx))
for rx in rxs:
self.assertEqual(rx[IP].src, gre_if_3.t_src)
self.assertEqual(rx[IP].dst, gre_if_3.t_dst)
self.assert_packet_checksums_valid(rx)
def test_ip6_mcast_vrf(self):
""" IPv6 Multicast Replication in non-default table"""
#
# An (S,G).
# one accepting interface, pg0, 2 forwarding interfaces
#
route_2001_ff01_1 = VppIpMRoute(
self,
"2001::1",
"ff01::1", 256,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg8.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT,
proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
VppMRoutePath(self.pg2.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)],
table_id=10)
route_2001_ff01_1.add_vpp_config()
#
# a stream that matches the route for (2001::1, ff00::1)
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip6(self.pg8, "2001::1", "ff01::1")
self.pg8.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg1, 2,
self.verify_capture_ip6(self.pg1, tx)
self.verify_capture_ip6(self.pg2, tx)
def test_bidir(self):
""" IP Multicast Bi-directional """
#
# A (*,G). The set of accepting interfaces matching the forwarding
#
route_232_1_1_1 = VppIpMRoute(
self,
"0.0.0.0",
"232.1.1.1", 32,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
[VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT |
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT |
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
VppMRoutePath(self.pg2.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT |
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
VppMRoutePath(self.pg3.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT |
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
route_232_1_1_1.add_vpp_config()
tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "232.1.1.1")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg1, 2, 3, but not on pg0
self.verify_capture_ip4(self.pg1, tx)
self.verify_capture_ip4(self.pg2, tx)
self.verify_capture_ip4(self.pg3, tx)
self.pg0.assert_nothing_captured(
remark="IP multicast packets forwarded on PG0")
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
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