5a8123bda0
Add IP[46] MFIB dump. Change-Id: I4a2821f65e67a5416b291e4912c84f64989883b8 Signed-off-by: Neale Ranns <nranns@cisco.com>
636 lines
21 KiB
Python
636 lines
21 KiB
Python
#!/usr/bin/env python
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import unittest
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from framework import VppTestCase, VppTestRunner
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from vpp_sub_interface import VppSubInterface, VppDot1QSubint, VppDot1ADSubint
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from vpp_ip_route import VppIpMRoute, VppMRoutePath, VppMFibSignal
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from scapy.packet import Raw
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from scapy.layers.l2 import Ether
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from scapy.layers.inet import IP, UDP, getmacbyip
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from scapy.layers.inet6 import IPv6, getmacbyip6
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from util import ppp
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class MRouteItfFlags:
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MFIB_ITF_FLAG_NONE = 0
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MFIB_ITF_FLAG_NEGATE_SIGNAL = 1
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MFIB_ITF_FLAG_ACCEPT = 2
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MFIB_ITF_FLAG_FORWARD = 4
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MFIB_ITF_FLAG_SIGNAL_PRESENT = 8
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MFIB_ITF_FLAG_INTERNAL_COPY = 16
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class MRouteEntryFlags:
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MFIB_ENTRY_FLAG_NONE = 0
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MFIB_ENTRY_FLAG_SIGNAL = 1
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MFIB_ENTRY_FLAG_DROP = 2
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MFIB_ENTRY_FLAG_CONNECTED = 4
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MFIB_ENTRY_FLAG_INHERIT_ACCEPT = 8
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#
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# The number of packets sent is set to 90 so that when we replicate more than 3
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# times, which we do for some entries, we will generate more than 256 packets
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# to the next node in the VLIB graph. Thus we are testing the code's
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# correctness handling this over-flow
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#
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N_PKTS_IN_STREAM = 90
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class TestMFIB(VppTestCase):
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""" MFIB Test Case """
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def setUp(self):
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super(TestMFIB, self).setUp()
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def test_mfib(self):
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""" MFIB Unit Tests """
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error = self.vapi.cli("test mfib")
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if error:
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self.logger.critical(error)
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self.assertEqual(error.find("Failed"), -1)
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class TestIPMcast(VppTestCase):
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""" IP Multicast Test Case """
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def setUp(self):
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super(TestIPMcast, self).setUp()
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# create 4 pg interfaces
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self.create_pg_interfaces(range(4))
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# setup interfaces
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for i in self.pg_interfaces:
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i.admin_up()
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i.config_ip4()
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i.config_ip6()
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i.resolve_arp()
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i.resolve_ndp()
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def create_stream_ip4(self, src_if, src_ip, dst_ip):
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pkts = []
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for i in range(0, N_PKTS_IN_STREAM):
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info = self.create_packet_info(src_if, src_if)
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payload = self.info_to_payload(info)
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p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
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IP(src=src_ip, dst=dst_ip) /
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UDP(sport=1234, dport=1234) /
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Raw(payload))
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info.data = p.copy()
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pkts.append(p)
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return pkts
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def create_stream_ip6(self, src_if, src_ip, dst_ip):
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pkts = []
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for i in range(0, N_PKTS_IN_STREAM):
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info = self.create_packet_info(src_if, src_if)
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payload = self.info_to_payload(info)
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p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
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IPv6(src=src_ip, dst=dst_ip) /
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UDP(sport=1234, dport=1234) /
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Raw(payload))
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info.data = p.copy()
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pkts.append(p)
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return pkts
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def verify_filter(self, capture, sent):
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if not len(capture) == len(sent):
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# filter out any IPv6 RAs from the captur
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for p in capture:
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if (p.haslayer(IPv6)):
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capture.remove(p)
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return capture
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def verify_capture_ip4(self, src_if, sent):
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rxd = self.pg1.get_capture(N_PKTS_IN_STREAM)
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try:
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capture = self.verify_filter(rxd, sent)
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self.assertEqual(len(capture), len(sent))
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for i in range(len(capture)):
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tx = sent[i]
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rx = capture[i]
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# the rx'd packet has the MPLS label popped
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eth = rx[Ether]
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self.assertEqual(eth.type, 0x800)
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tx_ip = tx[IP]
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rx_ip = rx[IP]
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# check the MAC address on the RX'd packet is correctly formed
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self.assertEqual(eth.dst, getmacbyip(rx_ip.dst))
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self.assertEqual(rx_ip.src, tx_ip.src)
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self.assertEqual(rx_ip.dst, tx_ip.dst)
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# IP processing post pop has decremented the TTL
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self.assertEqual(rx_ip.ttl + 1, tx_ip.ttl)
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except:
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raise
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def verify_capture_ip6(self, src_if, sent):
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capture = self.pg1.get_capture(N_PKTS_IN_STREAM)
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self.assertEqual(len(capture), len(sent))
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for i in range(len(capture)):
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tx = sent[i]
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rx = capture[i]
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# the rx'd packet has the MPLS label popped
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eth = rx[Ether]
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self.assertEqual(eth.type, 0x86DD)
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tx_ip = tx[IPv6]
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rx_ip = rx[IPv6]
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# check the MAC address on the RX'd packet is correctly formed
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self.assertEqual(eth.dst, getmacbyip6(rx_ip.dst))
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self.assertEqual(rx_ip.src, tx_ip.src)
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self.assertEqual(rx_ip.dst, tx_ip.dst)
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# IP processing post pop has decremented the TTL
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self.assertEqual(rx_ip.hlim + 1, tx_ip.hlim)
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def test_ip_mcast(self):
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""" IP Multicast Replication """
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#
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# a stream that matches the default route. gets dropped.
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#
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self.vapi.cli("clear trace")
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tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "232.1.1.1")
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self.pg0.add_stream(tx)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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self.pg0.assert_nothing_captured(
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remark="IP multicast packets forwarded on default route")
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#
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# A (*,G).
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# one accepting interface, pg0, 3 forwarding interfaces
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#
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route_232_1_1_1 = VppIpMRoute(
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self,
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"0.0.0.0",
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"232.1.1.1", 32,
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MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
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[VppMRoutePath(self.pg0.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
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VppMRoutePath(self.pg1.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
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VppMRoutePath(self.pg2.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
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VppMRoutePath(self.pg3.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
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route_232_1_1_1.add_vpp_config()
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#
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# An (S,G).
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# one accepting interface, pg0, 2 forwarding interfaces
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#
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route_1_1_1_1_232_1_1_1 = VppIpMRoute(
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self,
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"1.1.1.1",
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"232.1.1.1", 64,
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MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
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[VppMRoutePath(self.pg0.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
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VppMRoutePath(self.pg1.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
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VppMRoutePath(self.pg2.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
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route_1_1_1_1_232_1_1_1.add_vpp_config()
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#
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# An (*,G/m).
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# one accepting interface, pg0, 1 forwarding interfaces
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#
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route_232 = VppIpMRoute(
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self,
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"0.0.0.0",
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"232.0.0.0", 8,
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MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
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[VppMRoutePath(self.pg0.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
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VppMRoutePath(self.pg1.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
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route_232.add_vpp_config()
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#
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# a stream that matches the route for (1.1.1.1,232.1.1.1)
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#
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self.vapi.cli("clear trace")
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tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "232.1.1.1")
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self.pg0.add_stream(tx)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# We expect replications on Pg1, 2,
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self.verify_capture_ip4(self.pg1, tx)
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self.verify_capture_ip4(self.pg2, tx)
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# no replications on Pg0
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self.pg0.assert_nothing_captured(
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remark="IP multicast packets forwarded on PG0")
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self.pg3.assert_nothing_captured(
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remark="IP multicast packets forwarded on PG3")
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#
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# a stream that matches the route for (*,232.0.0.0/8)
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# Send packets with the 9th bit set so we test the correct clearing
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# of that bit in the mac rewrite
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#
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self.vapi.cli("clear trace")
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tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "232.255.255.255")
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self.pg0.add_stream(tx)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# We expect replications on Pg1 only
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self.verify_capture_ip4(self.pg1, tx)
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# no replications on Pg0, Pg2 not Pg3
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self.pg0.assert_nothing_captured(
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remark="IP multicast packets forwarded on PG0")
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self.pg2.assert_nothing_captured(
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remark="IP multicast packets forwarded on PG2")
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self.pg3.assert_nothing_captured(
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remark="IP multicast packets forwarded on PG3")
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#
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# a stream that matches the route for (*,232.1.1.1)
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#
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self.vapi.cli("clear trace")
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tx = self.create_stream_ip4(self.pg0, "1.1.1.2", "232.1.1.1")
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self.pg0.add_stream(tx)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# We expect replications on Pg1, 2, 3.
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self.verify_capture_ip4(self.pg1, tx)
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self.verify_capture_ip4(self.pg2, tx)
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self.verify_capture_ip4(self.pg3, tx)
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# no replications on Pg0
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self.pg0.assert_nothing_captured(
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remark="IP multicast packets forwarded on PG0")
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route_232_1_1_1.remove_vpp_config()
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route_1_1_1_1_232_1_1_1.remove_vpp_config()
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route_232.remove_vpp_config()
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def test_ip6_mcast(self):
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""" IPv6 Multicast Replication """
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#
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# a stream that matches the default route. gets dropped.
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#
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self.vapi.cli("clear trace")
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tx = self.create_stream_ip6(self.pg0, "2001::1", "ff01::1")
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self.pg0.add_stream(tx)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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self.pg0.assert_nothing_captured(
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remark="IPv6 multicast packets forwarded on default route")
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#
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# A (*,G).
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# one accepting interface, pg0, 3 forwarding interfaces
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#
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route_ff01_1 = VppIpMRoute(
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self,
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"::",
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"ff01::1", 128,
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MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
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[VppMRoutePath(self.pg0.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
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VppMRoutePath(self.pg1.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
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VppMRoutePath(self.pg2.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
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VppMRoutePath(self.pg3.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)],
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is_ip6=1)
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route_ff01_1.add_vpp_config()
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#
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# An (S,G).
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# one accepting interface, pg0, 2 forwarding interfaces
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#
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route_2001_ff01_1 = VppIpMRoute(
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self,
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"2001::1",
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"ff01::1", 256,
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MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
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[VppMRoutePath(self.pg0.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
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VppMRoutePath(self.pg1.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
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VppMRoutePath(self.pg2.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)],
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is_ip6=1)
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route_2001_ff01_1.add_vpp_config()
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#
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# An (*,G/m).
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# one accepting interface, pg0, 1 forwarding interface
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#
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route_ff01 = VppIpMRoute(
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self,
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"::",
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"ff01::", 16,
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MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
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[VppMRoutePath(self.pg0.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
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VppMRoutePath(self.pg1.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)],
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is_ip6=1)
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route_ff01.add_vpp_config()
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#
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# a stream that matches the route for (*, ff01::/16)
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#
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self.vapi.cli("clear trace")
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tx = self.create_stream_ip6(self.pg0, "2002::1", "ff01:2::255")
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self.pg0.add_stream(tx)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# We expect replications on Pg1
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self.verify_capture_ip6(self.pg1, tx)
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# no replications on Pg0, Pg3
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self.pg0.assert_nothing_captured(
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remark="IP multicast packets forwarded on PG0")
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self.pg2.assert_nothing_captured(
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remark="IP multicast packets forwarded on PG2")
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self.pg3.assert_nothing_captured(
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remark="IP multicast packets forwarded on PG3")
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#
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# a stream that matches the route for (*,ff01::1)
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#
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self.vapi.cli("clear trace")
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tx = self.create_stream_ip6(self.pg0, "2002::2", "ff01::1")
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self.pg0.add_stream(tx)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# We expect replications on Pg1, 2, 3.
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self.verify_capture_ip6(self.pg1, tx)
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self.verify_capture_ip6(self.pg2, tx)
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self.verify_capture_ip6(self.pg3, tx)
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# no replications on Pg0
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self.pg0.assert_nothing_captured(
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remark="IPv6 multicast packets forwarded on PG0")
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#
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# a stream that matches the route for (2001::1, ff00::1)
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#
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self.vapi.cli("clear trace")
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tx = self.create_stream_ip6(self.pg0, "2001::1", "ff01::1")
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self.pg0.add_stream(tx)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# We expect replications on Pg1, 2,
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self.verify_capture_ip6(self.pg1, tx)
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self.verify_capture_ip6(self.pg2, tx)
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# no replications on Pg0, Pg3
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self.pg0.assert_nothing_captured(
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remark="IP multicast packets forwarded on PG0")
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self.pg3.assert_nothing_captured(
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remark="IP multicast packets forwarded on PG3")
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route_ff01.remove_vpp_config()
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route_ff01_1.remove_vpp_config()
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route_2001_ff01_1.remove_vpp_config()
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def _mcast_connected_send_stream(self, dst_ip):
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self.vapi.cli("clear trace")
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tx = self.create_stream_ip4(self.pg0,
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self.pg0.remote_ip4,
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dst_ip)
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self.pg0.add_stream(tx)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# We expect replications on Pg1.
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self.verify_capture_ip4(self.pg1, tx)
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return tx
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def test_ip_mcast_connected(self):
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""" IP Multicast Connected Source check """
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#
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# A (*,G).
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# one accepting interface, pg0, 1 forwarding interfaces
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#
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route_232_1_1_1 = VppIpMRoute(
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self,
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"0.0.0.0",
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"232.1.1.1", 32,
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MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
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[VppMRoutePath(self.pg0.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
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VppMRoutePath(self.pg1.sw_if_index,
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MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
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route_232_1_1_1.add_vpp_config()
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route_232_1_1_1.update_entry_flags(
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MRouteEntryFlags.MFIB_ENTRY_FLAG_CONNECTED)
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#
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# Now the (*,G) is present, send from connected source
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#
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tx = self._mcast_connected_send_stream("232.1.1.1")
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#
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# Constrct a representation of the signal we expect on pg0
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#
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signal_232_1_1_1_itf_0 = VppMFibSignal(self,
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route_232_1_1_1,
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self.pg0.sw_if_index,
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tx[0])
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#
|
|
# 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.remove_vpp_config()
|
|
route_232_1_1_2.remove_vpp_config()
|
|
|
|
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))
|
|
|
|
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))
|
|
|
|
#
|
|
# Cleanup
|
|
#
|
|
route_232_1_1_1.remove_vpp_config()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main(testRunner=VppTestRunner)
|