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vpp/test/test_gre.py
John Lo a43ccaefc3 Optimize GRE Tunnel and add support for ERSPAN encap 
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>
2018-02-15 11:07:56 +00:00

865 lines
29 KiB
Python
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#!/usr/bin/env python
import unittest
from logging import *
from framework import VppTestCase, VppTestRunner
from vpp_sub_interface import VppDot1QSubint
from vpp_gre_interface import VppGreInterface, VppGre6Interface
from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto, VppIpTable
from vpp_papi_provider import L2_VTR_OP
from scapy.packet import Raw
from scapy.layers.l2 import Ether, Dot1Q, GRE
from scapy.layers.inet import IP, UDP
from scapy.layers.inet6 import IPv6
from scapy.volatile import RandMAC, RandIP
from util import ppp, ppc
class GreTunnelTypes:
TT_L3 = 0
TT_TEB = 1
TT_ERSPAN = 2
class TestGRE(VppTestCase):
""" GRE Test Case """
@classmethod
def setUpClass(cls):
super(TestGRE, cls).setUpClass()
def setUp(self):
super(TestGRE, self).setUp()
# create 3 pg interfaces - set one in a non-default table.
self.create_pg_interfaces(range(3))
self.tbl = VppIpTable(self, 1)
self.tbl.add_vpp_config()
self.pg1.set_table_ip4(1)
for i in self.pg_interfaces:
i.admin_up()
self.pg0.config_ip4()
self.pg0.resolve_arp()
self.pg1.config_ip4()
self.pg1.resolve_arp()
self.pg2.config_ip6()
self.pg2.resolve_ndp()
def tearDown(self):
for i in self.pg_interfaces:
i.unconfig_ip4()
i.unconfig_ip6()
i.admin_down()
self.pg1.set_table_ip4(0)
super(TestGRE, self).tearDown()
def create_stream_ip4(self, src_if, src_ip, dst_ip):
pkts = []
for i in range(0, 257):
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) /
IP(src=src_ip, dst=dst_ip) /
UDP(sport=1234, dport=1234) /
Raw(payload))
info.data = p.copy()
pkts.append(p)
return pkts
def create_stream_ip6(self, src_if, src_ip, dst_ip):
pkts = []
for i in range(0, 257):
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 create_tunnel_stream_4o4(self, src_if,
tunnel_src, tunnel_dst,
src_ip, dst_ip):
pkts = []
for i in range(0, 257):
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) /
IP(src=tunnel_src, dst=tunnel_dst) /
GRE() /
IP(src=src_ip, dst=dst_ip) /
UDP(sport=1234, dport=1234) /
Raw(payload))
info.data = p.copy()
pkts.append(p)
return pkts
def create_tunnel_stream_6o4(self, src_if,
tunnel_src, tunnel_dst,
src_ip, dst_ip):
pkts = []
for i in range(0, 257):
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) /
IP(src=tunnel_src, dst=tunnel_dst) /
GRE() /
IPv6(src=src_ip, dst=dst_ip) /
UDP(sport=1234, dport=1234) /
Raw(payload))
info.data = p.copy()
pkts.append(p)
return pkts
def create_tunnel_stream_6o6(self, src_if,
tunnel_src, tunnel_dst,
src_ip, dst_ip):
pkts = []
for i in range(0, 257):
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=tunnel_src, dst=tunnel_dst) /
GRE() /
IPv6(src=src_ip, dst=dst_ip) /
UDP(sport=1234, dport=1234) /
Raw(payload))
info.data = p.copy()
pkts.append(p)
return pkts
def create_tunnel_stream_l2o4(self, src_if,
tunnel_src, tunnel_dst):
pkts = []
for i in range(0, 257):
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) /
IP(src=tunnel_src, dst=tunnel_dst) /
GRE() /
Ether(dst=RandMAC('*:*:*:*:*:*'),
src=RandMAC('*:*:*:*:*:*')) /
IP(src=str(RandIP()), dst=str(RandIP())) /
UDP(sport=1234, dport=1234) /
Raw(payload))
info.data = p.copy()
pkts.append(p)
return pkts
def create_tunnel_stream_vlano4(self, src_if,
tunnel_src, tunnel_dst, vlan):
pkts = []
for i in range(0, 257):
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) /
IP(src=tunnel_src, dst=tunnel_dst) /
GRE() /
Ether(dst=RandMAC('*:*:*:*:*:*'),
src=RandMAC('*:*:*:*:*:*')) /
Dot1Q(vlan=vlan) /
IP(src=str(RandIP()), dst=str(RandIP())) /
UDP(sport=1234, dport=1234) /
Raw(payload))
info.data = p.copy()
pkts.append(p)
return pkts
def verify_tunneled_4o4(self, src_if, capture, sent,
tunnel_src, tunnel_dst):
self.assertEqual(len(capture), len(sent))
for i in range(len(capture)):
try:
tx = sent[i]
rx = capture[i]
tx_ip = tx[IP]
rx_ip = rx[IP]
self.assertEqual(rx_ip.src, tunnel_src)
self.assertEqual(rx_ip.dst, tunnel_dst)
rx_gre = rx[GRE]
rx_ip = rx_gre[IP]
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:
self.logger.error(ppp("Rx:", rx))
self.logger.error(ppp("Tx:", tx))
raise
def verify_tunneled_6o6(self, src_if, capture, sent,
tunnel_src, tunnel_dst):
self.assertEqual(len(capture), len(sent))
for i in range(len(capture)):
try:
tx = sent[i]
rx = capture[i]
tx_ip = tx[IPv6]
rx_ip = rx[IPv6]
self.assertEqual(rx_ip.src, tunnel_src)
self.assertEqual(rx_ip.dst, tunnel_dst)
rx_gre = GRE(str(rx_ip[IPv6].payload))
rx_ip = rx_gre[IPv6]
self.assertEqual(rx_ip.src, tx_ip.src)
self.assertEqual(rx_ip.dst, tx_ip.dst)
except:
self.logger.error(ppp("Rx:", rx))
self.logger.error(ppp("Tx:", tx))
raise
def verify_tunneled_l2o4(self, src_if, capture, sent,
tunnel_src, tunnel_dst):
self.assertEqual(len(capture), len(sent))
for i in range(len(capture)):
try:
tx = sent[i]
rx = capture[i]
tx_ip = tx[IP]
rx_ip = rx[IP]
self.assertEqual(rx_ip.src, tunnel_src)
self.assertEqual(rx_ip.dst, tunnel_dst)
rx_gre = rx[GRE]
rx_l2 = rx_gre[Ether]
rx_ip = rx_l2[IP]
tx_gre = tx[GRE]
tx_l2 = tx_gre[Ether]
tx_ip = tx_l2[IP]
self.assertEqual(rx_ip.src, tx_ip.src)
self.assertEqual(rx_ip.dst, tx_ip.dst)
# bridged, not L3 forwarded, so no TTL decrement
self.assertEqual(rx_ip.ttl, tx_ip.ttl)
except:
self.logger.error(ppp("Rx:", rx))
self.logger.error(ppp("Tx:", tx))
raise
def verify_tunneled_vlano4(self, src_if, capture, sent,
tunnel_src, tunnel_dst, vlan):
try:
self.assertEqual(len(capture), len(sent))
except:
ppc("Unexpected packets captured:", capture)
raise
for i in range(len(capture)):
try:
tx = sent[i]
rx = capture[i]
tx_ip = tx[IP]
rx_ip = rx[IP]
self.assertEqual(rx_ip.src, tunnel_src)
self.assertEqual(rx_ip.dst, tunnel_dst)
rx_gre = rx[GRE]
rx_l2 = rx_gre[Ether]
rx_vlan = rx_l2[Dot1Q]
rx_ip = rx_l2[IP]
self.assertEqual(rx_vlan.vlan, vlan)
tx_gre = tx[GRE]
tx_l2 = tx_gre[Ether]
tx_ip = tx_l2[IP]
self.assertEqual(rx_ip.src, tx_ip.src)
self.assertEqual(rx_ip.dst, tx_ip.dst)
# bridged, not L3 forwarded, so no TTL decrement
self.assertEqual(rx_ip.ttl, tx_ip.ttl)
except:
self.logger.error(ppp("Rx:", rx))
self.logger.error(ppp("Tx:", tx))
raise
def verify_decapped_4o4(self, src_if, capture, sent):
self.assertEqual(len(capture), len(sent))
for i in range(len(capture)):
try:
tx = sent[i]
rx = capture[i]
tx_ip = tx[IP]
rx_ip = rx[IP]
tx_gre = tx[GRE]
tx_ip = tx_gre[IP]
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:
self.logger.error(ppp("Rx:", rx))
self.logger.error(ppp("Tx:", tx))
raise
def verify_decapped_6o4(self, src_if, capture, sent):
self.assertEqual(len(capture), len(sent))
for i in range(len(capture)):
try:
tx = sent[i]
rx = capture[i]
tx_ip = tx[IP]
rx_ip = rx[IPv6]
tx_gre = tx[GRE]
tx_ip = tx_gre[IPv6]
self.assertEqual(rx_ip.src, tx_ip.src)
self.assertEqual(rx_ip.dst, tx_ip.dst)
self.assertEqual(rx_ip.hlim + 1, tx_ip.hlim)
except:
self.logger.error(ppp("Rx:", rx))
self.logger.error(ppp("Tx:", tx))
raise
def test_gre(self):
""" GRE IPv4 tunnel Tests """
#
# Create an L3 GRE tunnel.
# - set it admin up
# - assign an IP Addres
# - Add a route via the tunnel
#
gre_if = VppGreInterface(self,
self.pg0.local_ip4,
"1.1.1.2")
gre_if.add_vpp_config()
#
# The double create (create the same tunnel twice) should fail,
# and we should still be able to use the original
#
try:
gre_if.add_vpp_config()
except Exception:
pass
else:
self.fail("Double GRE tunnel add does not fail")
gre_if.admin_up()
gre_if.config_ip4()
route_via_tun = VppIpRoute(self, "4.4.4.4", 32,
[VppRoutePath("0.0.0.0",
gre_if.sw_if_index)])
route_via_tun.add_vpp_config()
#
# Send a packet stream that is routed into the tunnel
# - they are all dropped since the tunnel's desintation IP
# is unresolved - or resolves via the default route - which
# which is a drop.
#
tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "4.4.4.4")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.pg0.assert_nothing_captured(
remark="GRE packets forwarded without DIP resolved")
#
# Add a route that resolves the tunnel's destination
#
route_tun_dst = VppIpRoute(self, "1.1.1.2", 32,
[VppRoutePath(self.pg0.remote_ip4,
self.pg0.sw_if_index)])
route_tun_dst.add_vpp_config()
#
# Send a packet stream that is routed into the tunnel
# - packets are GRE encapped
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "4.4.4.4")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(len(tx))
self.verify_tunneled_4o4(self.pg0, rx, tx,
self.pg0.local_ip4, "1.1.1.2")
#
# Send tunneled packets that match the created tunnel and
# are decapped and forwarded
#
self.vapi.cli("clear trace")
tx = self.create_tunnel_stream_4o4(self.pg0,
"1.1.1.2",
self.pg0.local_ip4,
self.pg0.local_ip4,
self.pg0.remote_ip4)
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(len(tx))
self.verify_decapped_4o4(self.pg0, rx, tx)
#
# Send tunneled packets that do not match the tunnel's src
#
self.vapi.cli("clear trace")
tx = self.create_tunnel_stream_4o4(self.pg0,
"1.1.1.3",
self.pg0.local_ip4,
self.pg0.local_ip4,
self.pg0.remote_ip4)
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.pg0.assert_nothing_captured(
remark="GRE packets forwarded despite no SRC address match")
#
# Configure IPv6 on the PG interface so we can route IPv6
# packets
#
self.pg0.config_ip6()
self.pg0.resolve_ndp()
#
# Send IPv6 tunnel encapslated packets
# - dropped since IPv6 is not enabled on the tunnel
#
self.vapi.cli("clear trace")
tx = self.create_tunnel_stream_6o4(self.pg0,
"1.1.1.2",
self.pg0.local_ip4,
self.pg0.local_ip6,
self.pg0.remote_ip6)
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.pg0.assert_nothing_captured(remark="IPv6 GRE packets forwarded "
"despite IPv6 not enabled on tunnel")
#
# Enable IPv6 on the tunnel
#
gre_if.config_ip6()
#
# Send IPv6 tunnel encapslated packets
# - forwarded since IPv6 is enabled on the tunnel
#
self.vapi.cli("clear trace")
tx = self.create_tunnel_stream_6o4(self.pg0,
"1.1.1.2",
self.pg0.local_ip4,
self.pg0.local_ip6,
self.pg0.remote_ip6)
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(len(tx))
self.verify_decapped_6o4(self.pg0, rx, tx)
#
# test case cleanup
#
route_tun_dst.remove_vpp_config()
route_via_tun.remove_vpp_config()
gre_if.remove_vpp_config()
self.pg0.unconfig_ip6()
def test_gre6(self):
""" GRE IPv6 tunnel Tests """
self.pg1.config_ip6()
self.pg1.resolve_ndp()
#
# Create an L3 GRE tunnel.
# - set it admin up
# - assign an IP Address
# - Add a route via the tunnel
#
gre_if = VppGre6Interface(self,
self.pg2.local_ip6,
"1002::1")
gre_if.add_vpp_config()
gre_if.admin_up()
gre_if.config_ip6()
route_via_tun = VppIpRoute(
self, "4004::1", 128,
[VppRoutePath("0::0",
gre_if.sw_if_index,
proto=DpoProto.DPO_PROTO_IP6)],
is_ip6=1)
route_via_tun.add_vpp_config()
#
# Send a packet stream that is routed into the tunnel
# - they are all dropped since the tunnel's desintation IP
# is unresolved - or resolves via the default route - which
# which is a drop.
#
tx = self.create_stream_ip6(self.pg2, "5005::1", "4004::1")
self.pg2.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.pg2.assert_nothing_captured(
remark="GRE packets forwarded without DIP resolved")
#
# Add a route that resolves the tunnel's destination
#
route_tun_dst = VppIpRoute(
self, "1002::1", 128,
[VppRoutePath(self.pg2.remote_ip6,
self.pg2.sw_if_index,
proto=DpoProto.DPO_PROTO_IP6)],
is_ip6=1)
route_tun_dst.add_vpp_config()
#
# Send a packet stream that is routed into the tunnel
# - packets are GRE encapped
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip6(self.pg2, "5005::1", "4004::1")
self.pg2.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg2.get_capture(len(tx))
self.verify_tunneled_6o6(self.pg2, rx, tx,
self.pg2.local_ip6, "1002::1")
#
# Test decap. decapped packets go out pg1
#
tx = self.create_tunnel_stream_6o6(self.pg2,
"1002::1",
self.pg2.local_ip6,
"2001::1",
self.pg1.remote_ip6)
self.vapi.cli("clear trace")
self.pg2.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(len(tx))
#
# RX'd packet is UDP over IPv6, test the GRE header is gone.
#
self.assertFalse(rx[0].haslayer(GRE))
self.assertEqual(rx[0][IPv6].dst, self.pg1.remote_ip6)
#
# test case cleanup
#
route_tun_dst.remove_vpp_config()
route_via_tun.remove_vpp_config()
gre_if.remove_vpp_config()
self.pg2.unconfig_ip6()
self.pg1.unconfig_ip6()
def test_gre_vrf(self):
""" GRE tunnel VRF Tests """
#
# Create an L3 GRE tunnel whose destination is in the non-default
# table. The underlay is thus non-default - the overlay is still
# the default.
# - set it admin up
# - assign an IP Addres
#
gre_if = VppGreInterface(self, self.pg1.local_ip4,
"2.2.2.2",
outer_fib_id=1)
gre_if.add_vpp_config()
gre_if.admin_up()
gre_if.config_ip4()
#
# Add a route via the tunnel - in the overlay
#
route_via_tun = VppIpRoute(self, "9.9.9.9", 32,
[VppRoutePath("0.0.0.0",
gre_if.sw_if_index)])
route_via_tun.add_vpp_config()
#
# Add a route that resolves the tunnel's destination - in the
# underlay table
#
route_tun_dst = VppIpRoute(self, "2.2.2.2", 32, table_id=1,
paths=[VppRoutePath(self.pg1.remote_ip4,
self.pg1.sw_if_index)])
route_tun_dst.add_vpp_config()
#
# Send a packet stream that is routed into the tunnel
# packets are sent in on pg0 which is in the default table
# - packets are GRE encapped
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "9.9.9.9")
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(len(tx))
self.verify_tunneled_4o4(self.pg1, rx, tx,
self.pg1.local_ip4, "2.2.2.2")
#
# Send tunneled packets that match the created tunnel and
# are decapped and forwarded. This tests the decap lookup
# does not happen in the encap table
#
self.vapi.cli("clear trace")
tx = self.create_tunnel_stream_4o4(self.pg1,
"2.2.2.2",
self.pg1.local_ip4,
self.pg0.local_ip4,
self.pg0.remote_ip4)
self.pg1.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(len(tx))
self.verify_decapped_4o4(self.pg0, rx, tx)
#
# Send tunneled packets that match the created tunnel and
# but arrive on an interface that is not in the tunnel's
# encap VRF, these are dropped
#
self.vapi.cli("clear trace")
tx = self.create_tunnel_stream_4o4(self.pg2,
"2.2.2.2",
self.pg1.local_ip4,
self.pg0.local_ip4,
self.pg0.remote_ip4)
self.pg1.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.pg0.assert_nothing_captured(
remark="GRE decap packets in wrong VRF")
#
# test case cleanup
#
route_tun_dst.remove_vpp_config()
route_via_tun.remove_vpp_config()
gre_if.remove_vpp_config()
def test_gre_l2(self):
""" GRE tunnel L2 Tests """
#
# Add routes to resolve the tunnel destinations
#
route_tun1_dst = VppIpRoute(self, "2.2.2.2", 32,
[VppRoutePath(self.pg0.remote_ip4,
self.pg0.sw_if_index)])
route_tun2_dst = VppIpRoute(self, "2.2.2.3", 32,
[VppRoutePath(self.pg0.remote_ip4,
self.pg0.sw_if_index)])
route_tun1_dst.add_vpp_config()
route_tun2_dst.add_vpp_config()
#
# Create 2 L2 GRE tunnels and x-connect them
#
gre_if1 = VppGreInterface(self, self.pg0.local_ip4,
"2.2.2.2",
type=GreTunnelTypes.TT_TEB)
gre_if2 = VppGreInterface(self, self.pg0.local_ip4,
"2.2.2.3",
type=GreTunnelTypes.TT_TEB)
gre_if1.add_vpp_config()
gre_if2.add_vpp_config()
gre_if1.admin_up()
gre_if2.admin_up()
self.vapi.sw_interface_set_l2_xconnect(gre_if1.sw_if_index,
gre_if2.sw_if_index,
enable=1)
self.vapi.sw_interface_set_l2_xconnect(gre_if2.sw_if_index,
gre_if1.sw_if_index,
enable=1)
#
# Send in tunnel encapped L2. expect out tunnel encapped L2
# in both directions
#
self.vapi.cli("clear trace")
tx = self.create_tunnel_stream_l2o4(self.pg0,
"2.2.2.2",
self.pg0.local_ip4)
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(len(tx))
self.verify_tunneled_l2o4(self.pg0, rx, tx,
self.pg0.local_ip4,
"2.2.2.3")
self.vapi.cli("clear trace")
tx = self.create_tunnel_stream_l2o4(self.pg0,
"2.2.2.3",
self.pg0.local_ip4)
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(len(tx))
self.verify_tunneled_l2o4(self.pg0, rx, tx,
self.pg0.local_ip4,
"2.2.2.2")
self.vapi.sw_interface_set_l2_xconnect(gre_if1.sw_if_index,
gre_if2.sw_if_index,
enable=0)
self.vapi.sw_interface_set_l2_xconnect(gre_if2.sw_if_index,
gre_if1.sw_if_index,
enable=0)
#
# Create a VLAN sub-interfaces on the GRE TEB interfaces
# then x-connect them
#
gre_if_11 = VppDot1QSubint(self, gre_if1, 11)
gre_if_12 = VppDot1QSubint(self, gre_if2, 12)
# gre_if_11.add_vpp_config()
# gre_if_12.add_vpp_config()
gre_if_11.admin_up()
gre_if_12.admin_up()
self.vapi.sw_interface_set_l2_xconnect(gre_if_11.sw_if_index,
gre_if_12.sw_if_index,
enable=1)
self.vapi.sw_interface_set_l2_xconnect(gre_if_12.sw_if_index,
gre_if_11.sw_if_index,
enable=1)
#
# Configure both to pop thier respective VLAN tags,
# so that during the x-coonect they will subsequently push
#
self.vapi.sw_interface_set_l2_tag_rewrite(gre_if_12.sw_if_index,
L2_VTR_OP.L2_POP_1,
12)
self.vapi.sw_interface_set_l2_tag_rewrite(gre_if_11.sw_if_index,
L2_VTR_OP.L2_POP_1,
11)
#
# Send traffic in both directiond - expect the VLAN tags to
# be swapped.
#
self.vapi.cli("clear trace")
tx = self.create_tunnel_stream_vlano4(self.pg0,
"2.2.2.2",
self.pg0.local_ip4,
11)
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(len(tx))
self.verify_tunneled_vlano4(self.pg0, rx, tx,
self.pg0.local_ip4,
"2.2.2.3",
12)
self.vapi.cli("clear trace")
tx = self.create_tunnel_stream_vlano4(self.pg0,
"2.2.2.3",
self.pg0.local_ip4,
12)
self.pg0.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(len(tx))
self.verify_tunneled_vlano4(self.pg0, rx, tx,
self.pg0.local_ip4,
"2.2.2.2",
11)
#
# Cleanup Test resources
#
gre_if_11.remove_vpp_config()
gre_if_12.remove_vpp_config()
gre_if1.remove_vpp_config()
gre_if2.remove_vpp_config()
route_tun1_dst.add_vpp_config()
route_tun2_dst.add_vpp_config()
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
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