From 06f37e7ba486c598cf2896c87a82c95b8afe17a4 Mon Sep 17 00:00:00 2001 From: Matej Klotton Date: Thu, 28 Apr 2016 18:15:49 +0200 Subject: [PATCH] CSIT-18: Add GRE tunnel libraries and tests. Change-Id: I91ccd65a26ea1782611bccc3badd91e64366a162 Signed-off-by: Matej Klotton --- bootstrap.sh | 2 +- resources/libraries/python/InterfaceUtil.py | 35 +++++- resources/libraries/robot/gre.robot | 123 ++++++++++++++++++++ resources/templates/vat/create_gre.vat | 1 + .../traffic_scripts/send_gre_check_icmp_headers.py | 86 ++++++++++++++ .../traffic_scripts/send_icmp_check_gre_headers.py | 92 +++++++++++++++ tests/suites/gre/gre_encapsulation.robot | 128 +++++++++++++++++++++ 7 files changed, 465 insertions(+), 2 deletions(-) create mode 100644 resources/libraries/robot/gre.robot create mode 100644 resources/templates/vat/create_gre.vat create mode 100755 resources/traffic_scripts/send_gre_check_icmp_headers.py create mode 100755 resources/traffic_scripts/send_icmp_check_gre_headers.py create mode 100644 tests/suites/gre/gre_encapsulation.robot diff --git a/bootstrap.sh b/bootstrap.sh index de6cd3722a..3f29f9856e 100755 --- a/bootstrap.sh +++ b/bootstrap.sh @@ -70,7 +70,7 @@ if [ "${#}" -ne "0" ]; then echo ${arr[0]} else rm -f *.deb - VPP_STABLE_VER="1.0.0-437~g8f15e92_amd64" + VPP_STABLE_VER="1.0.0-451~g686a5a5_amd64" VPP_REPO_URL="https://nexus.fd.io/service/local/repositories/fd.io.dev/content/io/fd/vpp" wget -q "${VPP_REPO_URL}/vpp/${VPP_STABLE_VER}/vpp-${VPP_STABLE_VER}.deb" || exit wget -q "${VPP_REPO_URL}/vpp-dbg/${VPP_STABLE_VER}/vpp-dbg-${VPP_STABLE_VER}.deb" || exit diff --git a/resources/libraries/python/InterfaceUtil.py b/resources/libraries/python/InterfaceUtil.py index 6790fb7221..94250fba28 100644 --- a/resources/libraries/python/InterfaceUtil.py +++ b/resources/libraries/python/InterfaceUtil.py @@ -572,7 +572,40 @@ class InterfaceUtil(object): with VatTerminal(node) as vat: vat.vat_terminal_exec_cmd('exec show interfaces') - return '{}.{}'.format(interface, sub_id), sw_subif_index + name = '{}.{}'.format(interface, sub_id) + return name, sw_subif_index + + @staticmethod + def create_gre_tunnel_interface(node, source_ip, destination_ip): + """Create GRE tunnel interface on node. + + :param node: VPP node to add tunnel interface. + :param source_ip: Source of the GRE tunnel. + :param destination_ip: Destination of the GRE tunnel. + :type node: dict + :type source_ip: str + :type destination_ip: str + :return: Name and index of created GRE tunnel interface. + :rtype: tuple + :raises RuntimeError: If unable to create GRE tunnel interface. + """ + output = VatExecutor.cmd_from_template(node, "create_gre.vat", + src=source_ip, + dst=destination_ip) + output = output[0] + + if output["retval"] == 0: + sw_if_index = output["sw_if_index"] + + vat_executor = VatExecutor() + vat_executor.execute_script_json_out("dump_interfaces.vat", node) + interface_dump_json = vat_executor.get_script_stdout() + name = VatJsonUtil.get_interface_name_from_json( + interface_dump_json, sw_if_index) + return name, sw_if_index + else: + raise RuntimeError('Unable to create GRE tunnel on node {}.' + .format(node)) @staticmethod def vpp_create_loopback(node): diff --git a/resources/libraries/robot/gre.robot b/resources/libraries/robot/gre.robot new file mode 100644 index 0000000000..b2036b840d --- /dev/null +++ b/resources/libraries/robot/gre.robot @@ -0,0 +1,123 @@ +# Copyright (c) 2016 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +*** Settings *** +| Resource | resources/libraries/robot/interfaces.robot + +*** Keywords *** +| GRE tunnel interface is created and up +| | [Documentation] | Create GRE tunnel interface on defined VPP node and put +| | ... | the interface to UP state. +| | ... +| | ... | *Arguments:* +| | ... | - ${dut_node} - DUT node where to create GRE tunnel. Type: dictionary +| | ... | - ${source_ip_address} - GRE tunnel source IP address. Type: string +| | ... | - ${destination_ip_address} - GRE tunnel destination IP address. +| | ... | Type: string +| | ... +| | ... | *Return:* +| | ... | - ${name} - Name of created GRE tunnel interface. Type: string +| | ... | - ${index} - SW interface index of created GRE tunnel interface. +| | ... | Type: integer +| | ... +| | ... | *Example:* +| | ... +| | ... | \| ${gre_name} \| ${gre_index}= \ +| | ... | \| GRE tunnel interface is created and up \| ${dut} \ +| | ... | \| 192.0.1.1 \| 192.0.1.2 \| +| | ... +| | [Arguments] | ${dut_node} | ${source_ip_address} | ${destination_ip_address} +| | ${name} | ${index}= | Create GRE Tunnel Interface +| | | | ... | ${dut_node} | ${source_ip_address} | ${destination_ip_address} +| | Set Interface State | ${dut_node} | ${index} | up +| | [Return] | ${name} | ${index} + + +| Send ICMPv4 and check received GRE header +| | [Documentation] | Send ICMPv4 packet and check if received packed contains +| | ... | correct GRE, IP, MAC headers. +| | ... +| | ... | *Arguments:* +| | ... | - ${tg_node} - Node where to run traffic script. Type: dictionary +| | ... | - ${tx_if} - Interface from where send ICPMv4 packet. Type: string +| | ... | - ${rx_if} - Interface where to receive GRE packet. Type: string +| | ... | - ${tx_dst_mac} - Destination MAC address of ICMP packet. Type: string +| | ... | - ${rx_dst_mac} - Expected destination MAC address of GRE packet. +| | ... | Type: string +| | ... | - ${inner_src_ip} - Source IP address of ICMP packet. Type: string +| | ... | - ${inner_dst_ip} - Destination IP address of ICMP packet. +| | ... | Type: string +| | ... | - ${outer_src_ip} - Source IP address of GRE packet. Type: string +| | ... | - ${outer_dst_ip} - Destination IP address of GRE packet. +| | ... | Type: string +| | ... +| | ... | *Return:* +| | ... | - No value returned +| | ... +| | ... | *Example:* +| | ... +| | ... | \| Send ICMPv4 and check received GRE header \ +| | ... | \| ${tg_node} \| ${tg_to_dut_if1} \| ${tg_to_dut_if2} \ +| | ... | \| ${tx_dst_mac} \| ${rx_dst_mac} \| ${net1_host_address} \ +| | ... | \| ${net2_host_address} \| ${dut1_ip_address} \| ${dut2_ip_address} \| +| | ... +| | [Arguments] | ${tg_node} | ${tx_if} | ${rx_if} +| | ... | ${tx_dst_mac} | ${rx_dst_mac} +| | ... | ${inner_src_ip} | ${inner_dst_ip} +| | ... | ${outer_src_ip} | ${outer_dst_ip} +| | ${args}= | Catenate | --tx_if | ${tx_if} | --rx_if | ${rx_if} +| | | ... | --tx_dst_mac | ${tx_dst_mac} | --rx_dst_mac | ${rx_dst_mac} +| | | ... | --inner_src_ip | ${inner_src_ip} | --inner_dst_ip | ${inner_dst_ip} +| | | ... | --outer_src_ip | ${outer_src_ip} | --outer_dst_ip | ${outer_dst_ip} +| | Run Traffic Script On Node +| | ... | send_icmp_check_gre_headers.py | ${tg_node} | ${args} + + +| Send GRE and check received ICMPv4 header +| | [Documentation] | Send ICMPv4 packet and check if received packed contains +| | ... | correct GRE, IP, MAC headers. +| | ... +| | ... | *Arguments:* +| | ... | - ${tg_node} - Node where to run traffic script. Type: dictionary +| | ... | - ${tx_if} - Interface from where send ICPMv4 packet. Type: string +| | ... | - ${rx_if} - Interface where receive GRE packet. Type: string +| | ... | - ${tx_dst_mac} - Destination MAC address of GRE packet. Type: string +| | ... | - ${rx_dst_mac} - Expected destination MAC address of ICMP packet. +| | ... | Type: string +| | ... | - ${inner_src_ip} - Source IP address of ICMP packet. Type: string +| | ... | - ${inner_dst_ip} - Destination IP address of ICMP packet. +| | ... | Type: string +| | ... | - ${outer_src_ip} - Source IP address of GRE packet. Type: string +| | ... | - ${outer_dst_ip} - Destination IP address of GRE packet. +| | ... | Type: string +| | ... +| | ... | *Return:* +| | ... | - No value returned +| | ... +| | ... | *Example:* +| | ... +| | ... | \| Send GRE and check received ICMPv4 header \| ${tg_node} \ +| | ... | \| ${tg_to_dut_if2} \| ${tg_to_dut_if1} \| ${tx_dst_mac} \ +| | ... | \| ${rx_dst_mac} \| ${net2_host_address} \| ${net1_host_address} \ +| | ... | \| ${dut2_ip_address} \| ${dut1_ip_address} \| +| | ... +| | [Arguments] | ${tg_node} | ${tx_if} | ${rx_if} +| | ... | ${tx_dst_mac} | ${rx_dst_mac} +| | ... | ${inner_src_ip} | ${inner_dst_ip} +| | ... | ${outer_src_ip} | ${outer_dst_ip} +| | ${args}= | Catenate | --tx_if | ${tx_if} | --rx_if | ${rx_if} +| | | ... | --tx_dst_mac | ${tx_dst_mac} | --rx_dst_mac | ${rx_dst_mac} +| | | ... | --inner_src_ip | ${inner_src_ip} | --inner_dst_ip | ${inner_dst_ip} +| | | ... | --outer_src_ip | ${outer_src_ip} | --outer_dst_ip | ${outer_dst_ip} +| | Run Traffic Script On Node +| | ... | send_gre_check_icmp_headers.py | ${tg_node} | ${args} diff --git a/resources/templates/vat/create_gre.vat b/resources/templates/vat/create_gre.vat new file mode 100644 index 0000000000..26cdcfb9b8 --- /dev/null +++ b/resources/templates/vat/create_gre.vat @@ -0,0 +1 @@ +gre_add_del_tunnel src {src} dst {dst} diff --git a/resources/traffic_scripts/send_gre_check_icmp_headers.py b/resources/traffic_scripts/send_gre_check_icmp_headers.py new file mode 100755 index 0000000000..27eac5d786 --- /dev/null +++ b/resources/traffic_scripts/send_gre_check_icmp_headers.py @@ -0,0 +1,86 @@ +#!/usr/bin/env python +# Copyright (c) 2016 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +"""Traffic script that sends a GRE encapsulated ICMPv4 packet from one +interface to the other, where is expected ICMPv4 without GRE header. +""" + +import sys + +from robot.api import logger +from scapy.all import Ether +from scapy.layers.inet import IP_PROTOS +from scapy.layers.inet import IP +from scapy.layers.inet import ICMP +from scapy.layers.l2 import GRE + +from resources.libraries.python.PacketVerifier import RxQueue, TxQueue +from resources.libraries.python.TrafficScriptArg import TrafficScriptArg + + +def main(): + args = TrafficScriptArg( + ['tx_dst_mac', 'rx_dst_mac', + 'inner_src_ip', 'inner_dst_ip', + 'outer_src_ip', 'outer_dst_ip']) + + tx_if = args.get_arg('tx_if') + rx_if = args.get_arg('rx_if') + tx_dst_mac = args.get_arg('tx_dst_mac') + rx_dst_mac = args.get_arg('rx_dst_mac') + inner_src_ip = args.get_arg('inner_src_ip') + inner_dst_ip = args.get_arg('inner_dst_ip') + outer_src_ip = args.get_arg('outer_src_ip') + outer_dst_ip = args.get_arg('outer_dst_ip') + + rxq = RxQueue(rx_if) + txq = TxQueue(tx_if) + sent_packets = [] + + tx_pkt_raw = Ether(dst=tx_dst_mac) / \ + IP(src=outer_src_ip, dst=outer_dst_ip) / \ + GRE() / \ + IP(src=inner_src_ip, dst=inner_dst_ip) / \ + ICMP() + + sent_packets.append(tx_pkt_raw) + txq.send(tx_pkt_raw) + ether = rxq.recv(2) + + if ether is None: + raise RuntimeError("ICMP echo Rx timeout") + + # Check RX headers + if ether.dst != rx_dst_mac: + raise RuntimeError("Matching of received destination MAC unsuccessful.") + logger.debug("Comparison of received destination MAC: OK.") + + if ether['IP'].src != inner_src_ip: + raise RuntimeError("Matching of received inner source IP unsuccessful.") + logger.debug("Comparison of received outer source IP: OK.") + + if ether['IP'].dst != inner_dst_ip: + raise RuntimeError( + "Matching of received inner destination IP unsuccessful.") + logger.debug("Comparison of received outer destination IP: OK.") + + if ether['IP'].proto != IP_PROTOS.icmp: + raise RuntimeError("IP protocol is other than ICMP.") + logger.debug("Comparison of received ICMP protocol: OK.") + + sys.exit(0) + + +if __name__ == "__main__": + main() diff --git a/resources/traffic_scripts/send_icmp_check_gre_headers.py b/resources/traffic_scripts/send_icmp_check_gre_headers.py new file mode 100755 index 0000000000..ccea9f5d9b --- /dev/null +++ b/resources/traffic_scripts/send_icmp_check_gre_headers.py @@ -0,0 +1,92 @@ +#!/usr/bin/env python +# Copyright (c) 2016 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +"""Traffic script that sends an ICMPv4 packet from one interface to the other, +where GRE encapsulated packet is expected. +""" + +import sys + +from robot.api import logger +from scapy.all import Ether +from scapy.layers.inet import IP_PROTOS +from scapy.layers.inet import IP +from scapy.layers.inet import ICMP + +from resources.libraries.python.PacketVerifier import RxQueue, TxQueue +from resources.libraries.python.TrafficScriptArg import TrafficScriptArg + + +def main(): + args = TrafficScriptArg( + ['tx_dst_mac', 'rx_dst_mac', + 'inner_src_ip', 'inner_dst_ip', + 'outer_src_ip', 'outer_dst_ip']) + + tx_if = args.get_arg('tx_if') + rx_if = args.get_arg('rx_if') + tx_dst_mac = args.get_arg('tx_dst_mac') + rx_dst_mac = args.get_arg('rx_dst_mac') + inner_src_ip = args.get_arg('inner_src_ip') + inner_dst_ip = args.get_arg('inner_dst_ip') + outer_src_ip = args.get_arg('outer_src_ip') + outer_dst_ip = args.get_arg('outer_dst_ip') + + rxq = RxQueue(rx_if) + txq = TxQueue(tx_if) + sent_packets = [] + + tx_pkt_raw = Ether(dst=tx_dst_mac) / \ + IP(src=inner_src_ip, dst=inner_dst_ip) / \ + ICMP() + + sent_packets.append(tx_pkt_raw) + txq.send(tx_pkt_raw) + ether = rxq.recv(2) + + if ether is None: + raise RuntimeError("ICMP echo Rx timeout") + + # Check RX headers + if ether.dst != rx_dst_mac: + raise RuntimeError("Matching of received destination MAC unsuccessful.") + logger.debug("Comparison of received destination MAC: OK.") + + if ether['IP'].src != outer_src_ip: + raise RuntimeError("Matching of received outer source IP unsuccessful.") + logger.debug("Comparison of received outer source IP: OK.") + + if ether['IP'].dst != outer_dst_ip: + raise RuntimeError( + "Matching of received outer destination IP unsuccessful.") + logger.debug("Comparison of received outer destination IP: OK.") + + if ether['IP'].proto != IP_PROTOS.gre: + raise RuntimeError("IP protocol is no GRE.") + logger.debug("Comparison of received GRE protocol: OK.") + + if ether['IP']['GRE']['IP'].src != inner_src_ip: + raise RuntimeError("Matching of received inner source IP unsuccessful.") + logger.debug("Comparison of received inner source IP: OK.") + + if ether['IP']['GRE']['IP'].dst != inner_dst_ip: + raise RuntimeError( + "Matching of received inner destination IP unsuccessful.") + logger.debug("Comparison of received inner destination IP: OK.") + + sys.exit(0) + + +if __name__ == "__main__": + main() diff --git a/tests/suites/gre/gre_encapsulation.robot b/tests/suites/gre/gre_encapsulation.robot new file mode 100644 index 0000000000..1ccd1dc051 --- /dev/null +++ b/tests/suites/gre/gre_encapsulation.robot @@ -0,0 +1,128 @@ +# Copyright (c) 2016 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +*** Settings *** +| Resource | resources/libraries/robot/default.robot +| Resource | resources/libraries/robot/testing_path.robot +| Resource | resources/libraries/robot/ipv4.robot +| Resource | resources/libraries/robot/gre.robot +| Resource | resources/libraries/robot/traffic.robot +| Library | resources.libraries.python.IPUtil +| Library | resources.libraries.python.Trace +| Force Tags | VM_ENV | HW_ENV +| Test Setup | Run Keywords | Setup all DUTs before test +| ... | AND | Setup all TGs before traffic script +| Test Teardown | Show Packet Trace on All DUTs | ${nodes} +| Documentation | *GRE test suite.* +| ... +| ... | Test suite uses 2-node topology TG - DUT1 - TG with two links +| ... | between nodes as well as 3-node topology TG - DUT1 - DUT2 - TG +| ... | with one link between nodes. Test packets are sent from TG to DUT1. +| ... | DUT1 encapsulate packet into GRE and send out from other interface. +| ... | Traffic scripts check received MAC headers, IP headers and GRE headers. + +*** Variables *** +| ${net1_address}= | 192.168.0.0 +| ${net1_host_address}= | 192.168.0.100 +| ${net1_gw_address}= | 192.168.0.1 +| ${net2_address}= | 192.168.2.0 +| ${net2_host_address}= | 192.168.2.100 +| ${net2_gw_address}= | 192.168.2.1 +| ${dut1_ip_address}= | 192.168.1.1 +| ${dut2_ip_address}= | 192.168.1.2 +| ${dut1_gre_ip}= | 172.16.0.1 +| ${dut2_gre_ip}= | 172.16.0.2 +| ${prefix}= | 24 + +*** Test Cases *** +| VPP can route IPv4 traffic from GRE tunnel +| | [Tags] | 3_NODE_SINGLE_LINK_TOPO | 3_NODE_DOUBLE_LINK_TOPO +| | [Documentation] | Create GRE configuration on 2 DUTs, send IP traffic and +| | ... | check IP is not changed. +| | Given Path for 3-node testing is set | ${nodes['TG']} | ${nodes['DUT1']} +| | ... | ${nodes['DUT2']} | ${nodes['TG']} +| | And Interfaces in 3-node path are up +| | And IP addresses are set on interfaces +| | ... | ${dut1_node} | ${dut1_to_dut2} | ${dut1_ip_address} | ${prefix} +| | ... | ${dut1_node} | ${dut1_to_tg} | ${net1_gw_address} | ${prefix} +| | ... | ${dut2_node} | ${dut2_to_dut1} | ${dut2_ip_address} | ${prefix} +| | ... | ${dut2_node} | ${dut2_to_tg} | ${net2_gw_address} | ${prefix} +| | And VPP IP Probe | ${dut1_node} | ${dut1_to_dut2} | ${dut2_ip_address} +| | And VPP IP Probe | ${dut2_node} | ${dut2_to_dut1} | ${dut1_ip_address} +| | And Add Arp On Dut | ${dut2_node} | ${dut2_to_tg} | ${net2_host_address} +| | ... | ${tg_to_dut2_mac} +| | ${dut1_gre_interface} | ${dut1_gre_index}= +| | | ... | When GRE tunnel interface is created and up +| | | | ... | ${dut1_node} | ${dut1_ip_address} | ${dut2_ip_address} +| | ${dut2_gre_interface} | ${dut2_gre_index}= +| | | ... | And GRE tunnel interface is created and up +| | | | ... | ${dut2_node} | ${dut2_ip_address} | ${dut1_ip_address} +| | And IP addresses are set on interfaces +| | ... | ${dut1_node} | ${dut1_gre_index} | ${dut1_gre_ip} | ${prefix} +| | ... | ${dut2_node} | ${dut2_gre_index} | ${dut2_gre_ip} | ${prefix} +| | And Vpp Route Add | ${dut1_node} | ${net2_address} | ${prefix} +| | ... | ${dut2_gre_ip} | ${dut1_gre_index} +| | Then Send Packet And Check Headers | ${tg_node} +| | ... | ${net1_host_address} | ${net2_host_address} +| | ... | ${tg_to_dut1} | ${tg_to_dut1_mac} | ${dut1_to_tg_mac} +| | ... | ${tg_to_dut2} | ${dut2_to_tg_mac} | ${tg_to_dut2_mac} + + +| VPP can encapsulate IPv4 traffic in GRE +| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO +| | [Documentation] | Create GRE configuration on DUT, send IP traffic and +| | ... | check IP is correctly encapsulate into GRE. +| | Given Path for 2-node testing is set +| | ... | ${nodes['TG']} | ${nodes['DUT1']} | ${nodes['TG']} +| | And Interfaces in 2-node path are up +| | And IP addresses are set on interfaces +| | ... | ${dut_node} | ${dut_to_tg_if2} | ${dut1_ip_address} | ${prefix} +| | ... | ${dut_node} | ${dut_to_tg_if1} | ${net1_gw_address} | ${prefix} +| | And Add Arp On Dut | ${dut_node} | ${dut_to_tg_if2} | ${dut2_ip_address} +| | ... | ${tg_to_dut_if2_mac} +| | ${dut1_gre_interface} | ${dut1_gre_index}= +| | | ... | When GRE tunnel interface is created and up +| | | | ... | ${dut_node} | ${dut1_ip_address} | ${dut2_ip_address} +| | And IP addresses are set on interfaces +| | ... | ${dut_node} | ${dut1_gre_index} | ${dut1_gre_ip} | ${prefix} +| | And Vpp Route Add | ${dut_node} | ${net2_address} | ${prefix} +| | ... | ${dut2_gre_ip} | ${dut1_gre_index} +| | Then Send ICMPv4 and check received GRE header +| | ... | ${tg_node} | ${tg_to_dut_if1} | ${tg_to_dut_if2} +| | ... | ${dut_to_tg_if1_mac} | ${tg_to_dut_if2_mac} +| | ... | ${net1_host_address} | ${net2_host_address} +| | ... | ${dut1_ip_address} | ${dut2_ip_address} + + +| VPP can decapsulate IPv4 traffic in GRE +| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO +| | [Documentation] | Create GRE configuration on DUT, send GRE encapsulated +| | ... | traffic and check IP is received without GRE headers. +| | Given Path for 2-node testing is set +| | ... | ${nodes['TG']} | ${nodes['DUT1']} | ${nodes['TG']} +| | And Interfaces in 2-node path are up +| | And IP addresses are set on interfaces +| | ... | ${dut_node} | ${dut_to_tg_if2} | ${dut1_ip_address} | ${prefix} +| | ... | ${dut_node} | ${dut_to_tg_if1} | ${net1_gw_address} | ${prefix} +| | And Add Arp On Dut | ${dut_node} | ${dut_to_tg_if1} | ${net1_host_address} +| | ... | ${tg_to_dut_if1_mac} +| | ${dut1_gre_interface} | ${dut1_gre_index}= +| | | ... | When GRE tunnel interface is created and up +| | | | ... | ${dut_node} | ${dut1_ip_address} | ${dut2_ip_address} +| | And IP addresses are set on interfaces +| | ... | ${dut_node} | ${dut1_gre_index} | ${dut1_gre_ip} | ${prefix} +| | Then Send GRE and check received ICMPv4 header +| | ... | ${tg_node} | ${tg_to_dut_if2} | ${tg_to_dut_if1} +| | ... | ${dut_to_tg_if2_mac} | ${tg_to_dut_if1_mac} +| | ... | ${net2_host_address} | ${net1_host_address} +| | ... | ${dut2_ip_address} | ${dut1_ip_address} -- 2.16.6