Add flowhash hash table to vppinfra - vpp

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author	Pierre Pfister <ppfister@cisco.com>	2018-01-12 09:41:16 +0100
committer	Dave Barach <openvpp@barachs.net>	2018-02-01 12:48:05 +0000
commit	953f551e3629a3b96c678a35f5e6f507ea67cd84 (patch)
tree	e615a27746f273c5646d4e1a0065627a31889a44 /src/plugins/dpdk/device/node.c
parent	be9b41ba3887452c864d1423ea03ed4ee2b9153c (diff)

Add flowhash hash table to vppinfra

This hash table intends to provide an alternative to the widely used bihash table in places where either: - Hash entry timeout is required - The hash table data does not fit in CPU cache Although the bihash table is very fast, each lookup requires accessing two cache lines in a serialized fashion. It works fine when the hash table is in cache, but hits a wall when it does not. The 'flowhash' table uses a simplified design (at the cost of a less good bucket auto-scaling) where each access only requires a single memory lookup (in the absence of collision). The hash table also uses a reduced number of registers. In practice, a VPP node implementing a stateful feature would typically: - prefetch buffer metadata (in-cache) - prefetch packet header (in-cache) - compute hash & prefetch hash bucket (possibly in RAM) - read/write key and value from bucket Using this hash table, it is possible to pipeline accesses in a way that does not exhaust CPU's line field buffers, even when the requested value is located in RAM (i.e. not in cache). Measurements showed it was possible to scale to tens of millions of flows (with a full 5-tuple matching and 32B value, i.e. 1 cache line per flow) with no performance degradation when the hash table grows to the point it doesn't fit in cache anymore. I have used this table in a couple of non-open-sourced projects, but think it might be useful to lb, nat, and possibly other VPP subsystems. More information in the .h file. Change-Id: I2b13dde0eabd868b75da1cedbfca0bf74d705102 Signed-off-by: Pierre Pfister <ppfister@cisco.com>

Diffstat (limited to 'src/plugins/dpdk/device/node.c')

0 files changed, 0 insertions, 0 deletions

#!/usr/bin/env python import unittest from framework import VppTestCase, VppTestRunner from vpp_sub_interface import VppSubInterface, VppDot1QSubint, VppDot1ADSubint from vpp_ip_route import VppIpMRoute, VppMRoutePath, VppMFibSignal, \ MRouteItfFlags, MRouteEntryFlags, VppIpTable, DpoProto from scapy.packet import Raw from scapy.layers.l2 import Ether from scapy.layers.inet import IP, UDP, getmacbyip, ICMP from scapy.layers.inet6 import IPv6, getmacbyip6 from util import ppp # # 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 """ 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.assertEqual(error.find("Failed"), -1) class TestIPMcast(VppTestCase): """ IP Multicast Test Case """ 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 captur for p in capture: if (p.haslayer(IPv6)): capture.remove(p) return capture def verify_capture_ip4(self, rx_if, sent): 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] # check the MAC address on the RX'd packet is correctly formed self.assertEqual(eth.dst, getmacbyip(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.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 replicare 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", 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), VppMRoutePath(self.pg2.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)]) route_1_1_1_1_232_1_1_1.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() # 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) # 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 (*,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) # 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, 2, 3. 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) 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=DpoProto.DPO_PROTO_IP6), VppMRoutePath(self.pg1.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_FORWARD, proto=DpoProto.DPO_PROTO_IP6), VppMRoutePath(self.pg2.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_FORWARD, proto=DpoProto.DPO_PROTO_IP6), VppMRoutePath(self.pg3.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_FORWARD, proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1) 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", 256, MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE, [VppMRoutePath(self.pg0.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT, proto=DpoProto.DPO_PROTO_IP6), VppMRoutePath(self.pg1.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_FORWARD, proto=DpoProto.DPO_PROTO_IP6), VppMRoutePath(self.pg2.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_FORWARD, proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1) 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=DpoProto.DPO_PROTO_IP6), VppMRoutePath(self.pg1.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_FORWARD, proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1) route_ff01.add_vpp_config() # # a stream that matches the route for (*, ff01::/16) # 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_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=DpoProto.DPO_PROTO_IP6), VppMRoutePath(self.pg1.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_FORWARD, proto=DpoProto.DPO_PROTO_IP6), VppMRoutePath(self.pg2.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_FORWARD, proto=DpoProto.DPO_PROTO_IP6)], table_id=10, is_ip6=1) 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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