a43ccaefc3
Change GRE tunnel to use the interface type where the same encap node is used as output node for all GRE tunnels, instead of having dedicated output and tx node for each tunnel. This allows for more efficient tunnel creation and deletion at scale tested at 1000's of GRE tunnels. Add support for ERSPAN encap as another tunnel type, in addition to the existing L3 and TEB types. The GRE ERSPAN encap supported is type 2 thus GRE encap need to include sequence number and GRE- ERSPAN tunnel can be created with user secified ERSPAN session ID. The GRE tunnel lookup hash key is updated to inclue tunnel type and session ID, in addition to SIP/DIP and FIB index. Thus, GRE-ERSPAN tunnel can be created, with the appropriate session ID, to be used as output interface for SPAN config to send mirrored packets. Change interface naming so that all GRE tunnels, irrespective of tunnel type, uses "greN" where N is the instance number. Removed interface reuse on tunnel creation and deletion to enable unfied tunnel interface name. Add support of user specified instance on GRE tunnel creation. Thus, N in the "greN" interface name can optionally be specified by user via CLI/API. Optimize GRE tunnel encap DPO stacking to bypass load-balance DPO node since packet output on GRE tunnel always belong to the same flow after 5-tupple hash. Change-Id: Ifa83915744a1a88045c998604777cc3583f4da52 Signed-off-by: John Lo <loj@cisco.com>
503 lines
19 KiB
Python
503 lines
19 KiB
Python
#!/usr/bin/env python
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import unittest
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from scapy.packet import Raw
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from scapy.layers.l2 import Ether, Dot1Q, GRE
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from scapy.layers.inet import IP, UDP
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from scapy.layers.vxlan import VXLAN
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from framework import VppTestCase, VppTestRunner
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from util import Host, ppp
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from vpp_sub_interface import VppDot1QSubint, VppDot1ADSubint
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from vpp_gre_interface import VppGreInterface, VppGre6Interface
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from vpp_papi_provider import L2_VTR_OP
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from collections import namedtuple
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Tag = namedtuple('Tag', ['dot1', 'vlan'])
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DOT1AD = 0x88A8
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DOT1Q = 0x8100
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class TestSpan(VppTestCase):
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""" SPAN Test Case """
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@classmethod
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def setUpClass(cls):
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super(TestSpan, cls).setUpClass()
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# Test variables
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cls.pkts_per_burst = 257 # Number of packets per burst
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# create 3 pg interfaces
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cls.create_pg_interfaces(range(3))
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cls.bd_id = 55
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cls.sub_if = VppDot1QSubint(cls, cls.pg0, 100)
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cls.vlan_sub_if = VppDot1QSubint(cls, cls.pg2, 300)
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cls.vlan_sub_if.set_vtr(L2_VTR_OP.L2_POP_1, tag=300)
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cls.qinq_sub_if = VppDot1ADSubint(cls, cls.pg2, 33, 400, 500)
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cls.qinq_sub_if.set_vtr(L2_VTR_OP.L2_POP_2, outer=500, inner=400)
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# packet flows mapping pg0 -> pg1, pg2 -> pg3, etc.
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cls.flows = dict()
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cls.flows[cls.pg0] = [cls.pg1]
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cls.flows[cls.pg1] = [cls.pg0]
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# packet sizes
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cls.pg_if_packet_sizes = [64, 512, 1518] # , 9018]
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# setup all interfaces
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for i in cls.pg_interfaces:
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i.admin_up()
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i.config_ip4()
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i.resolve_arp()
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cls.vxlan = cls.vapi.vxlan_add_del_tunnel(
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src_addr=cls.pg2.local_ip4n,
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dst_addr=cls.pg2.remote_ip4n,
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vni=1111,
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is_add=1)
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def setUp(self):
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super(TestSpan, self).setUp()
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self.reset_packet_infos()
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def tearDown(self):
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super(TestSpan, self).tearDown()
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if not self.vpp_dead:
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self.logger.info(self.vapi.ppcli("show interface span"))
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def xconnect(self, a, b, is_add=1):
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self.vapi.sw_interface_set_l2_xconnect(a, b, enable=is_add)
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self.vapi.sw_interface_set_l2_xconnect(b, a, enable=is_add)
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def bridge(self, sw_if_index, is_add=1):
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self.vapi.sw_interface_set_l2_bridge(
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sw_if_index, bd_id=self.bd_id, enable=is_add)
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def _remove_tag(self, packet, vlan, tag_type):
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self.assertEqual(packet.type, tag_type)
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payload = packet.payload
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self.assertEqual(payload.vlan, vlan)
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inner_type = payload.type
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payload = payload.payload
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packet.remove_payload()
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packet.add_payload(payload)
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packet.type = inner_type
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def remove_tags(self, packet, tags):
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for t in tags:
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self._remove_tag(packet, t.vlan, t.dot1)
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return packet
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def decap_gre(self, pkt):
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"""
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Decapsulate the original payload frame by removing GRE header
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"""
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self.assertEqual(pkt[Ether].src, self.pg2.local_mac)
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self.assertEqual(pkt[Ether].dst, self.pg2.remote_mac)
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self.assertEqual(pkt[IP].src, self.pg2.local_ip4)
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self.assertEqual(pkt[IP].dst, self.pg2.remote_ip4)
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return pkt[GRE].payload
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def decap_vxlan(self, pkt):
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"""
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Decapsulate the original payload frame by removing VXLAN header
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"""
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self.assertEqual(pkt[Ether].src, self.pg2.local_mac)
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self.assertEqual(pkt[Ether].dst, self.pg2.remote_mac)
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self.assertEqual(pkt[IP].src, self.pg2.local_ip4)
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self.assertEqual(pkt[IP].dst, self.pg2.remote_ip4)
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return pkt[VXLAN].payload
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def create_stream(self, src_if, packet_sizes, do_dot1=False, bcast=False):
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pkts = []
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dst_if = self.flows[src_if][0]
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dst_mac = src_if.remote_mac
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if bcast:
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dst_mac = "ff:ff:ff:ff:ff:ff"
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for i in range(0, self.pkts_per_burst):
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payload = "span test"
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size = packet_sizes[(i / 2) % len(packet_sizes)]
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p = (Ether(src=src_if.local_mac, dst=dst_mac) /
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IP(src=src_if.remote_ip4, dst=dst_if.remote_ip4) /
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UDP(sport=10000 + src_if.sw_if_index * 1000 + i, dport=1234) /
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Raw(payload))
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if do_dot1:
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p = self.sub_if.add_dot1_layer(p)
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self.extend_packet(p, size)
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pkts.append(p)
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return pkts
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def verify_capture(self, cap1, cap2):
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self.assertEqual(len(cap1), len(cap2),
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"Different number of sent and mirrored packets :"
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"%u != %u" % (len(cap1), len(cap2)))
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pkts1 = [(pkt[Ether] / pkt[IP] / pkt[UDP]) for pkt in cap1]
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pkts2 = [(pkt[Ether] / pkt[IP] / pkt[UDP]) for pkt in cap2]
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self.assertEqual(pkts1.sort(), pkts2.sort())
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def test_device_span(self):
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""" SPAN device rx mirror """
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# Create bi-directional cross-connects between pg0 and pg1
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self.xconnect(self.pg0.sw_if_index, self.pg1.sw_if_index)
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# Create incoming packet streams for packet-generator interfaces
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pkts = self.create_stream(self.pg0, self.pg_if_packet_sizes)
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self.pg0.add_stream(pkts)
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# Enable SPAN on pg0 (mirrored to pg2)
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self.vapi.sw_interface_span_enable_disable(
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self.pg0.sw_if_index, self.pg2.sw_if_index)
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self.logger.info(self.vapi.ppcli("show interface span"))
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# Enable packet capturing and start packet sending
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# Verify packets outgoing packet streams on mirrored interface (pg2)
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n_pkts = len(pkts)
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pg1_pkts = self.pg1.get_capture(n_pkts)
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pg2_pkts = self.pg2.get_capture(n_pkts)
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# Disable SPAN on pg0 (mirrored to pg2)
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self.vapi.sw_interface_span_enable_disable(
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self.pg0.sw_if_index, self.pg2.sw_if_index, state=0)
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self.xconnect(self.pg0.sw_if_index, self.pg1.sw_if_index, is_add=0)
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self.verify_capture(pg1_pkts, pg2_pkts)
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def test_span_l2_rx(self):
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""" SPAN l2 rx mirror """
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self.sub_if.admin_up()
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self.bridge(self.pg2.sw_if_index)
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# Create bi-directional cross-connects between pg0 subif and pg1
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index)
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# Create incoming packet streams for packet-generator interfaces
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pkts = self.create_stream(
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self.pg0, self.pg_if_packet_sizes, do_dot1=True)
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self.pg0.add_stream(pkts)
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# Enable SPAN on pg0 (mirrored to pg2)
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self.vapi.sw_interface_span_enable_disable(
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self.sub_if.sw_if_index, self.pg2.sw_if_index, is_l2=1)
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self.logger.info(self.vapi.ppcli("show interface span"))
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# Enable packet capturing and start packet sending
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# Verify packets outgoing packet streams on mirrored interface (pg2)
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pg2_expected = len(pkts)
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pg1_pkts = self.pg1.get_capture(pg2_expected)
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pg2_pkts = self.pg2.get_capture(pg2_expected)
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self.bridge(self.pg2.sw_if_index, is_add=0)
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# Disable SPAN on pg0 (mirrored to pg2)
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self.vapi.sw_interface_span_enable_disable(
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self.sub_if.sw_if_index, self.pg2.sw_if_index, state=0, is_l2=1)
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=0)
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self.verify_capture(pg1_pkts, pg2_pkts)
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def test_span_l2_rx_dst_vxlan(self):
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""" SPAN l2 rx mirror into vxlan """
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self.sub_if.admin_up()
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self.vapi.sw_interface_set_flags(self.vxlan.sw_if_index,
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admin_up_down=1)
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self.bridge(self.vxlan.sw_if_index, is_add=1)
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# Create bi-directional cross-connects between pg0 subif and pg1
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index)
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# Create incoming packet streams for packet-generator interfaces
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pkts = self.create_stream(
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self.pg0, self.pg_if_packet_sizes, do_dot1=True)
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self.pg0.add_stream(pkts)
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# Enable SPAN on pg0 sub if (mirrored to vxlan)
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self.vapi.sw_interface_span_enable_disable(
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self.sub_if.sw_if_index, self.vxlan.sw_if_index, is_l2=1)
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self.logger.info(self.vapi.ppcli("show interface span"))
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# Enable packet capturing and start packet sending
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# Verify packets outgoing packet streams on mirrored interface (pg2)
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n_pkts = len(pkts)
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pg1_pkts = self.pg1.get_capture(n_pkts)
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pg2_pkts = [self.decap_vxlan(p) for p in self.pg2.get_capture(n_pkts)]
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self.bridge(self.vxlan.sw_if_index, is_add=0)
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# Disable SPAN on pg0 sub if (mirrored to vxlan)
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self.vapi.sw_interface_span_enable_disable(
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self.sub_if.sw_if_index, self.vxlan.sw_if_index, state=0, is_l2=1)
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=0)
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self.verify_capture(pg1_pkts, pg2_pkts)
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def test_span_l2_rx_dst_gre_subif_vtr(self):
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""" SPAN l2 rx mirror into gre-subif+vtr """
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self.sub_if.admin_up()
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gre_if = VppGreInterface(self, self.pg2.local_ip4,
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self.pg2.remote_ip4,
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type=1)
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gre_if.add_vpp_config()
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gre_if.admin_up()
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gre_sub_if = VppDot1QSubint(self, gre_if, 500)
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gre_sub_if.set_vtr(L2_VTR_OP.L2_POP_1, tag=500)
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gre_sub_if.admin_up()
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self.bridge(gre_sub_if.sw_if_index)
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# Create bi-directional cross-connects between pg0 and pg1
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=1)
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# Create incoming packet streams for packet-generator interfaces
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pkts = self.create_stream(
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self.pg0, self.pg_if_packet_sizes, do_dot1=True)
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self.pg0.add_stream(pkts)
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self.vapi.sw_interface_span_enable_disable(
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self.sub_if.sw_if_index, gre_sub_if.sw_if_index, is_l2=1)
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# Enable packet capturing and start packet sending
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# Verify packets outgoing packet streams on mirrored interface (pg2)
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n_pkts = len(pkts)
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pg1_pkts = self.pg1.get_capture(n_pkts)
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pg2_pkts = self.pg2.get_capture(n_pkts)
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def decap(p): return self.remove_tags(
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self.decap_gre(p), [Tag(dot1=DOT1Q, vlan=500)])
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pg2_decaped = [decap(p) for p in pg2_pkts]
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self.bridge(gre_sub_if.sw_if_index, is_add=0)
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# Disable SPAN on pg0 sub if
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self.vapi.sw_interface_span_enable_disable(
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self.sub_if.sw_if_index, gre_sub_if.sw_if_index, state=0, is_l2=1)
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gre_if.remove_vpp_config()
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=0)
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self.verify_capture(pg1_pkts, pg2_decaped)
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def test_span_l2_rx_dst_1q_vtr(self):
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""" SPAN l2 rx mirror into 1q subif+vtr """
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self.sub_if.admin_up()
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self.vlan_sub_if.admin_up()
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self.bridge(self.vlan_sub_if.sw_if_index)
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# Create bi-directional cross-connects between pg0 and pg1
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=1)
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# Create incoming packet streams for packet-generator interfaces
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pkts = self.create_stream(
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self.pg0, self.pg_if_packet_sizes, do_dot1=True)
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self.pg0.add_stream(pkts)
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self.vapi.sw_interface_span_enable_disable(
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self.sub_if.sw_if_index, self.vlan_sub_if.sw_if_index, is_l2=1)
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# Enable packet capturing and start packet sending
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# Verify packets outgoing packet streams on mirrored interface (pg2)
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n_pkts = len(pkts)
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pg1_pkts = self.pg1.get_capture(n_pkts)
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pg2_pkts = self.pg2.get_capture(n_pkts)
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pg2_untagged = [self.remove_tags(p, [Tag(dot1=DOT1Q, vlan=300)])
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for p in pg2_pkts]
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self.bridge(self.vlan_sub_if.sw_if_index, is_add=0)
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# Disable SPAN on pg0 sub if (mirrored to vxlan)
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self.vapi.sw_interface_span_enable_disable(
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self.sub_if.sw_if_index, self.vlan_sub_if.sw_if_index, state=0,
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is_l2=1)
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=0)
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self.verify_capture(pg1_pkts, pg2_untagged)
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def test_span_l2_rx_dst_1ad_vtr(self):
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""" SPAN l2 rx mirror into 1ad subif+vtr """
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self.sub_if.admin_up()
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self.qinq_sub_if.admin_up()
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self.bridge(self.qinq_sub_if.sw_if_index)
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# Create bi-directional cross-connects between pg0 and pg1
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=1)
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# Create incoming packet streams for packet-generator interfaces
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pkts = self.create_stream(
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self.pg0, self.pg_if_packet_sizes, do_dot1=True)
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self.pg0.add_stream(pkts)
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self.vapi.sw_interface_span_enable_disable(
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self.sub_if.sw_if_index, self.qinq_sub_if.sw_if_index, is_l2=1)
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# Enable packet capturing and start packet sending
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# Verify packets outgoing packet streams on mirrored interface (pg2)
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n_pkts = len(pkts)
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pg1_pkts = self.pg1.get_capture(n_pkts)
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pg2_pkts = self.pg2.get_capture(n_pkts)
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pg2_untagged = [self.remove_tags(p, [Tag(dot1=DOT1AD, vlan=400),
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Tag(dot1=DOT1Q, vlan=500)])
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for p in pg2_pkts]
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self.bridge(self.qinq_sub_if.sw_if_index, is_add=0)
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# Disable SPAN on pg0 sub if (mirrored to vxlan)
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self.vapi.sw_interface_span_enable_disable(
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self.sub_if.sw_if_index, self.qinq_sub_if.sw_if_index, state=0,
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is_l2=1)
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=0)
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self.verify_capture(pg1_pkts, pg2_untagged)
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def test_l2_tx_span(self):
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""" SPAN l2 tx mirror """
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self.sub_if.admin_up()
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self.bridge(self.pg2.sw_if_index)
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# Create bi-directional cross-connects between pg0 and pg1
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index)
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# Create incoming packet streams for packet-generator interfaces
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pkts = self.create_stream(
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self.pg0, self.pg_if_packet_sizes, do_dot1=True)
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self.pg0.add_stream(pkts)
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# Enable SPAN on pg1 (mirrored to pg2)
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self.vapi.sw_interface_span_enable_disable(
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self.pg1.sw_if_index, self.pg2.sw_if_index, is_l2=1, state=2)
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self.logger.info(self.vapi.ppcli("show interface span"))
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# Enable packet capturing and start packet sending
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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# Verify packets outgoing packet streams on mirrored interface (pg2)
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n_pkts = len(pkts)
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pg1_pkts = self.pg1.get_capture(n_pkts)
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pg2_pkts = self.pg2.get_capture(n_pkts)
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self.bridge(self.pg2.sw_if_index, is_add=0)
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# Disable SPAN on pg0 (mirrored to pg2)
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self.vapi.sw_interface_span_enable_disable(
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self.pg1.sw_if_index, self.pg2.sw_if_index, state=0, is_l2=1)
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=0)
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|
|
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self.verify_capture(pg1_pkts, pg2_pkts)
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|
|
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def test_l2_rx_tx_span(self):
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""" SPAN l2 rx tx mirror """
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|
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self.sub_if.admin_up()
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self.bridge(self.pg2.sw_if_index)
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# Create bi-directional cross-connects between pg0 and pg1
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self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index)
|
|
|
|
# Create incoming packet streams for packet-generator interfaces
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pg0_pkts = self.create_stream(
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self.pg0, self.pg_if_packet_sizes, do_dot1=True)
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self.pg0.add_stream(pg0_pkts)
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pg1_pkts = self.create_stream(
|
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self.pg1, self.pg_if_packet_sizes, do_dot1=False)
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self.pg1.add_stream(pg1_pkts)
|
|
|
|
# Enable SPAN on pg0 (mirrored to pg2)
|
|
self.vapi.sw_interface_span_enable_disable(
|
|
self.sub_if.sw_if_index, self.pg2.sw_if_index, is_l2=1, state=3)
|
|
self.logger.info(self.vapi.ppcli("show interface span"))
|
|
|
|
# Enable packet capturing and start packet sending
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
self.pg_start()
|
|
|
|
# Verify packets outgoing packet streams on mirrored interface (pg2)
|
|
pg0_expected = len(pg1_pkts)
|
|
pg1_expected = len(pg0_pkts)
|
|
pg2_expected = pg0_expected + pg1_expected
|
|
|
|
pg0_pkts = self.pg0.get_capture(pg0_expected)
|
|
pg1_pkts = self.pg1.get_capture(pg1_expected)
|
|
pg2_pkts = self.pg2.get_capture(pg2_expected)
|
|
|
|
self.bridge(self.pg2.sw_if_index, is_add=0)
|
|
# Disable SPAN on pg0 (mirrored to pg2)
|
|
self.vapi.sw_interface_span_enable_disable(
|
|
self.sub_if.sw_if_index, self.pg2.sw_if_index, state=0, is_l2=1)
|
|
self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=0)
|
|
|
|
self.verify_capture(pg0_pkts + pg1_pkts, pg2_pkts)
|
|
|
|
def test_l2_bcast_mirror(self):
|
|
""" SPAN l2 broadcast mirror """
|
|
|
|
self.sub_if.admin_up()
|
|
self.bridge(self.pg2.sw_if_index)
|
|
|
|
# Create bi-directional cross-connects between pg0 and pg1
|
|
self.vapi.sw_interface_set_l2_bridge(
|
|
self.sub_if.sw_if_index, bd_id=99, enable=1)
|
|
self.vapi.sw_interface_set_l2_bridge(
|
|
self.pg1.sw_if_index, bd_id=99, enable=1)
|
|
|
|
# Create incoming packet streams for packet-generator interfaces
|
|
pg0_pkts = self.create_stream(
|
|
self.pg0, self.pg_if_packet_sizes, do_dot1=True, bcast=True)
|
|
self.pg0.add_stream(pg0_pkts)
|
|
pg1_pkts = self.create_stream(
|
|
self.pg1, self.pg_if_packet_sizes, do_dot1=False, bcast=True)
|
|
self.pg1.add_stream(pg1_pkts)
|
|
|
|
# Enable SPAN on pg0 (mirrored to pg2)
|
|
self.vapi.sw_interface_span_enable_disable(
|
|
self.sub_if.sw_if_index, self.pg2.sw_if_index, is_l2=1, state=3)
|
|
self.logger.info(self.vapi.ppcli("show interface span"))
|
|
|
|
# Enable packet capturing and start packet sending
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
self.pg_start()
|
|
|
|
# Verify packets outgoing packet streams on mirrored interface (pg2)
|
|
pg0_expected = len(pg1_pkts)
|
|
pg1_expected = len(pg0_pkts)
|
|
pg2_expected = pg0_expected + pg1_expected
|
|
|
|
pg0_pkts = self.pg0.get_capture(pg0_expected)
|
|
pg1_pkts = self.pg1.get_capture(pg1_expected)
|
|
pg2_pkts = self.pg2.get_capture(pg2_expected)
|
|
|
|
self.bridge(self.pg2.sw_if_index, is_add=0)
|
|
self.vapi.sw_interface_set_l2_bridge(
|
|
self.sub_if.sw_if_index, bd_id=99, enable=0)
|
|
self.vapi.sw_interface_set_l2_bridge(
|
|
self.pg1.sw_if_index, bd_id=99, enable=0)
|
|
# Disable SPAN on pg0 (mirrored to pg2)
|
|
self.vapi.sw_interface_span_enable_disable(
|
|
self.sub_if.sw_if_index, self.pg2.sw_if_index, state=0, is_l2=1)
|
|
|
|
self.verify_capture(pg0_pkts + pg1_pkts, pg2_pkts)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main(testRunner=VppTestRunner)
|