GSO: TAP/VHOST use case

Signed-off-by: pmikus <pmikus@cisco.com>
Change-Id: Ibafaaca4438587284d1e255c764f0701002941e8

5 files changed, 484 insertions, 0 deletions

diff --git a/tests/vpp/perf/gso/2n1l-10ge2p1x710-ethip4-ip4base-2tap-gso-iperf3.robot b/tests/vpp/perf/gso/2n1l-10ge2p1x710-ethip4-ip4base-2tap-gso-iperf3.robot
new file mode 100644
index 0000000000..91141ce1fa
--- /dev/null
+++ b/tests/vpp/perf/gso/2n1l-10ge2p1x710-ethip4-ip4base-2tap-gso-iperf3.robot
@@ -0,0 +1,112 @@
+# Copyright (c) 2021 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/shared/default.robot
+|
+| Force Tags | 2_NODE_SINGLE_LINK_TOPO | PERFTEST | HW_ENV | MRR
+| ... | NIC_Intel-X710 | IP4FWD | BASE | IP4BASE | DRV_TAP
+| ... | RXQ_SIZE_4096 | TXQ_SIZE_4096 | GSO_TRUE
+| ... | ethip4-ip4base-2tap-gso
+|
+| Suite Setup | Setup suite topology interfaces
+| Suite Teardown | Tear down suite
+| Test Setup | Setup test
+| Test Teardown | Tear down test | iPerf3 | namespace
+|
+| Test Template | Local Template
+|
+| Documentation | *RFC2544: Pkt throughput IPv4 routing test cases with TAPv2*
+|
+| ... | *[Top] Network Topologies:* DUT1 1-node topology without physical links.
+| ... | *[Enc] Packet Encapsulations:* Eth-IPv4-TCP.
+| ... | *[Cfg] DUT configuration:* DUT1 is configured with IPv4 routing.
+| ... | *[Ver] TG verification:* iPerf3 client/server is used for Packet\
+| ... | generation and verification.
+| ... | *[Ref] Applicable standard specifications:* RFC2544.
+
+*** Variables ***
+| @{plugins_to_enable}= | ping_plugin.so
+| ${crypto_type}= | ${None}
+| ${nic_name}= | Intel-X710
+| ${nic_driver}= | tap
+| ${nic_rxq_size}= | 4096
+| ${nic_txq_size}= | 4096
+| ${nic_pfs}= | 2
+| ${nic_vfs}= | 0
+| ${osi_layer}= | L7
+| ${overhead}= | ${0}
+| ${enable_gso}= | ${True}
+# iPerf3 client settings:
+| ${iperf_client_bind}= | 1.1.1.1
+| ${iperf_client_bind_gw}= | 1.1.1.2
+| ${iperf_client_bind_mask}= | 30
+| ${iperf_client_interface}= | tap0
+| ${iperf_client_namespace}= | tap0_namespace
+| ${iperf_client_udp}= | ${False}
+| ${iperf_client_node}= | DUT1
+| ${iperf_client_affinity} | ${None}
+# iPerf3 server settings:
+| ${iperf_server_bind}= | 2.2.2.2
+| ${iperf_server_bind_gw}= | 2.2.2.1
+| ${iperf_server_bind_mask}= | 30
+| ${iperf_server_interface}= | tap1
+| ${iperf_server_namespace}= | tap1_namespace
+| ${iperf_server_node}= | DUT1
+| ${iperf_server_pf_key}= | ${None}
+# Trial data overwrite:
+| ${trial_duration}= | ${30}
+| ${trial_multiplicity}= | ${4}
+
+*** Keywords ***
+| Local Template
+| | [Documentation]
+| | ... | [Cfg] DUT configuration: DUT1 is configured with IPv4 routing.
+| | ... | [Ver] Measure MaxReceivedRate for ${frame_size}B frames\
+| | ... | using burst trials throughput test.\
+| |
+| | ... | *Arguments:*
+| | ... | - frame_size - Framesize in Bytes in integer. Type: integer, string
+| | ... | - phy_cores - Number of physical cores. Type: integer
+| | ... | - rxq - Number of RX queues, default value: ${None}. Type: integer
+| |
+| | [Arguments] | ${frame_size} | ${phy_cores} | ${rxq}=${None}
+| |
+| | Set Test Variable | \${frame_size}
+| | Set Test Variable | \${rxq_ratio} | ${1}
+| |
+| | Given Set Jumbo
+| | And Add worker threads to all DUTs | ${phy_cores} | ${rxq}
+| | And Pre-initialize layer driver | ${nic_driver}
+| | And Apply startup configuration on all VPP DUTs
+| | When Initialize layer driver | ${nic_driver}
+| | And Initialize layer interface
+| | And VPP Interface Set IP Address
+| | ... | ${dut1} | ${DUT1_${int}1}[0] | 1.1.1.2 | 30
+| | And VPP Interface Set IP Address
+| | ... | ${dut1} | ${DUT1_${int}2}[0] | 2.2.2.1 | 30
+| | Set Test Variable | ${iperf_server_pf_key} | ${DUT1_pf1}[0]
+| | Then Traffic should pass with maximum rate on iPerf3
+
+*** Test Cases ***
+| 128KB-1c-ethip4-ip4base-2tap-gso-iperf3
+| | [Tags] | 128KB | 1C
+| | frame_size=${128000} | phy_cores=${1}
+
+| 128KB-2c-ethip4-ip4base-2tap-gso-iperf3
+| | [Tags] | 128KB | 2C
+| | frame_size=${128000} | phy_cores=${2}
+
+| 128KB-4c-ethip4-ip4base-2tap-gso-iperf3
+| | [Tags] | 128KB | 4C
+| | frame_size=${128000} | phy_cores=${4}
diff --git a/tests/vpp/perf/gso/2n1l-10ge2p1x710-ethip4-ip4base-2tap-iperf3.robot b/tests/vpp/perf/gso/2n1l-10ge2p1x710-ethip4-ip4base-2tap-iperf3.robot
new file mode 100644
index 0000000000..31ece186ec
--- /dev/null
+++ b/tests/vpp/perf/gso/2n1l-10ge2p1x710-ethip4-ip4base-2tap-iperf3.robot
@@ -0,0 +1,112 @@
+# Copyright (c) 2021 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/shared/default.robot
+|
+| Force Tags | 2_NODE_SINGLE_LINK_TOPO | PERFTEST | HW_ENV | MRR
+| ... | NIC_Intel-X710 | IP4FWD | BASE | IP4BASE | DRV_TAP
+| ... | RXQ_SIZE_4096 | TXQ_SIZE_4096 | GSO_FALSE
+| ... | ethip4-ip4base-2tap
+|
+| Suite Setup | Setup suite topology interfaces
+| Suite Teardown | Tear down suite
+| Test Setup | Setup test
+| Test Teardown | Tear down test | iPerf3 | namespace
+|
+| Test Template | Local Template
+|
+| Documentation | *RFC2544: Pkt throughput IPv4 routing test cases with TAPv2*
+|
+| ... | *[Top] Network Topologies:* DUT1 1-node topology without physical links.
+| ... | *[Enc] Packet Encapsulations:* Eth-IPv4-TCP.
+| ... | *[Cfg] DUT configuration:* DUT1 is configured with IPv4 routing.
+| ... | *[Ver] TG verification:* iPerf3 client/server is used for Packet\
+| ... | generation and verification.
+| ... | *[Ref] Applicable standard specifications:* RFC2544.
+
+*** Variables ***
+| @{plugins_to_enable}= | ping_plugin.so
+| ${crypto_type}= | ${None}
+| ${nic_name}= | Intel-X710
+| ${nic_driver}= | tap
+| ${nic_rxq_size}= | 4096
+| ${nic_txq_size}= | 4096
+| ${nic_pfs}= | 2
+| ${nic_vfs}= | 0
+| ${osi_layer}= | L7
+| ${overhead}= | ${0}
+| ${enable_gso}= | ${False}
+# iPerf3 client settings:
+| ${iperf_client_bind}= | 1.1.1.1
+| ${iperf_client_bind_gw}= | 1.1.1.2
+| ${iperf_client_bind_mask}= | 30
+| ${iperf_client_interface}= | tap0
+| ${iperf_client_namespace}= | tap0_namespace
+| ${iperf_client_udp}= | ${False}
+| ${iperf_client_node}= | DUT1
+| ${iperf_client_affinity} | ${None}
+# iPerf3 server settings:
+| ${iperf_server_bind}= | 2.2.2.2
+| ${iperf_server_bind_gw}= | 2.2.2.1
+| ${iperf_server_bind_mask}= | 30
+| ${iperf_server_interface}= | tap1
+| ${iperf_server_namespace}= | tap1_namespace
+| ${iperf_server_node}= | DUT1
+| ${iperf_server_pf_key}= | ${None}
+# Trial data overwrite:
+| ${trial_duration}= | ${30}
+| ${trial_multiplicity}= | ${4}
+
+*** Keywords ***
+| Local Template
+| | [Documentation]
+| | ... | [Cfg] DUT configuration: DUT1 is configured with IPv4 routing.
+| | ... | [Ver] Measure MaxReceivedRate for ${frame_size}B frames\
+| | ... | using burst trials throughput test.\
+| |
+| | ... | *Arguments:*
+| | ... | - frame_size - Framesize in Bytes in integer. Type: integer, string
+| | ... | - phy_cores - Number of physical cores. Type: integer
+| | ... | - rxq - Number of RX queues, default value: ${None}. Type: integer
+| |
+| | [Arguments] | ${frame_size} | ${phy_cores} | ${rxq}=${None}
+| |
+| | Set Test Variable | \${frame_size}
+| | Set Test Variable | \${rxq_ratio} | ${1}
+| |
+| | Given Set Jumbo
+| | And Add worker threads to all DUTs | ${phy_cores} | ${rxq}
+| | And Pre-initialize layer driver | ${nic_driver}
+| | And Apply startup configuration on all VPP DUTs
+| | When Initialize layer driver | ${nic_driver}
+| | And Initialize layer interface
+| | And VPP Interface Set IP Address
+| | ... | ${dut1} | ${DUT1_${int}1}[0] | 1.1.1.2 | 30
+| | And VPP Interface Set IP Address
+| | ... | ${dut1} | ${DUT1_${int}2}[0] | 2.2.2.1 | 30
+| | Set Test Variable | ${iperf_server_pf_key} | ${DUT1_pf1}[0]
+| | Then Traffic should pass with maximum rate on iPerf3
+
+*** Test Cases ***
+| 128KB-1c-ethip4-ip4base-2tap-iperf3
+| | [Tags] | 128KB | 1C
+| | frame_size=${128000} | phy_cores=${1}
+
+| 128KB-2c-ethip4-ip4base-2tap-iperf3
+| | [Tags] | 128KB | 2C
+| | frame_size=${128000} | phy_cores=${2}
+
+| 128KB-4c-ethip4-ip4base-2tap-iperf3
+| | [Tags] | 128KB | 4C
+| | frame_size=${128000} | phy_cores=${4}
diff --git a/tests/vpp/perf/gso/2n1l-10ge2p1x710-ethip4-ip4base-2vhost-gso-iperf3.robot b/tests/vpp/perf/gso/2n1l-10ge2p1x710-ethip4-ip4base-2vhost-gso-iperf3.robot
new file mode 100644
index 0000000000..849504050d
--- /dev/null
+++ b/tests/vpp/perf/gso/2n1l-10ge2p1x710-ethip4-ip4base-2vhost-gso-iperf3.robot
@@ -0,0 +1,121 @@
+# Copyright (c) 2021 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/shared/default.robot
+|
+| Force Tags | 2_NODE_SINGLE_LINK_TOPO | PERFTEST | HW_ENV | MRR
+| ... | NIC_Intel-X710 | IP4FWD | BASE | IP4BASE | DRV_VHOST
+| ... | RXQ_SIZE_4096 | TXQ_SIZE_4096 | GSO_TRUE
+| ... | ethip4-ip4base-2vhost-gso
+|
+| Suite Setup | Setup suite topology interfaces
+| Suite Teardown | Tear down suite
+| Test Setup | Setup test
+| Test Teardown | Tear down test | iPerf3 | vhost
+|
+| Test Template | Local Template
+|
+| Documentation | *RFC2544: Pkt throughput IPv4 routing test cases with VHOST*
+|
+| ... | *[Top] Network Topologies:* DUT1 1-node topology without physical links.
+| ... | *[Enc] Packet Encapsulations:* Eth-IPv4-TCP.
+| ... | *[Cfg] DUT configuration:* DUT1 is configured with IPv4 routing.
+| ... | *[Ver] TG verification:* iPerf3 client/server is used for Packet\
+| ... | generation and verification.
+| ... | *[Ref] Applicable standard specifications:* RFC2544.
+
+*** Variables ***
+| @{plugins_to_enable}= | ping_plugin.so
+| ${crypto_type}= | ${None}
+| ${nic_name}= | Intel-X710
+| ${nic_driver}= | vhost
+| ${nic_rxq_size}= | 4096
+| ${nic_txq_size}= | 4096
+| ${nic_pfs}= | 2
+| ${nic_vfs}= | 0
+| ${osi_layer}= | L7
+| ${overhead}= | ${0}
+# Qemu settings:
+| ${enable_gso}= | ${True}
+| ${enable_csum}= | ${True}
+| ${nf_dtcr}= | ${1}
+| ${nf_dtc}= | ${4}
+# iPerf3 client settings:
+| ${iperf_client_bind}= | 1.1.1.1
+| ${iperf_client_bind_gw}= | 1.1.1.2
+| ${iperf_client_bind_mask}= | 30
+| ${iperf_client_interface}= | ens6
+| ${iperf_client_namespace}= | ${None}
+| ${iperf_client_udp}= | ${False}
+| ${iperf_client_node}= | DUT1_2
+| ${iperf_client_affinity} | 1
+# iPerf3 server settings:
+| ${iperf_server_bind}= | 2.2.2.2
+| ${iperf_server_bind_gw}= | 2.2.2.1
+| ${iperf_server_bind_mask}= | 30
+| ${iperf_server_interface}= | ens6
+| ${iperf_server_namespace}= | ${None}
+| ${iperf_server_node}= | DUT1_1
+| ${iperf_server_pf_key}= | ${None}
+# Trial data overwrite:
+| ${trial_duration}= | ${30}
+| ${trial_multiplicity}= | ${4}
+
+*** Keywords ***
+| Local Template
+| | [Documentation]
+| | ... | [Cfg] DUT configuration: DUT1 is configured with IPv4 routing.
+| | ... | [Ver] Measure MaxReceivedRate for ${frame_size}B frames\
+| | ... | using burst trials throughput test.\
+| |
+| | ... | *Arguments:*
+| | ... | - frame_size - Framesize in Bytes in integer. Type: integer, string
+| | ... | - phy_cores - Number of physical cores. Type: integer
+| | ... | - rxq - Number of RX queues, default value: ${None}. Type: integer
+| |
+| | [Arguments] | ${frame_size} | ${phy_cores} | ${rxq}=${None}
+| |
+| | Set Test Variable | \${frame_size}
+| | Set Test Variable | \${rxq_ratio} | ${1}
+| |
+| | Given Set Jumbo
+| | And Add worker threads to all DUTs | ${phy_cores} | ${rxq}
+| | And Pre-initialize layer driver | ${nic_driver}
+| | And Apply startup configuration on all VPP DUTs
+| | When Initialize layer driver | ${nic_driver} | validate=${False}
+| | And Initialize layer interface
+| | And VPP Interface Set IP Address
+| | ... | ${dut1} | ${DUT1_${int}1}[0]
+| | ... | ${iperf_server_bind_gw} | ${iperf_server_bind_mask}
+| | And VPP Interface Set IP Address
+| | ... | ${dut1} | ${DUT1_${int}2}[0]
+| | ... | ${iperf_client_bind_gw} | ${iperf_client_bind_mask}
+| | And Configure chains of NFs connected via vhost-user on single node
+| | ... | node=DUT1 | nf_nodes=${2} | vnf=iperf3 | auto_scale=${True}
+| | ... | fixed_auto_scale=${True} | validate=${False}
+| | And Get CPU Info from All Nodes | ${nodes}
+| | Traffic should pass with maximum rate on iPerf3
+
+*** Test Cases ***
+| 128KB-1c-ethip4-ip4base-2vhost-gso-iperf3
+| | [Tags] | 128KB | 1C
+| | frame_size=${128000} | phy_cores=${1}
+
+| 128KB-2c-ethip4-ip4base-2vhost-gso-iperf3
+| | [Tags] | 128KB | 2C
+| | frame_size=${128000} | phy_cores=${2}
+
+| 128KB-4c-ethip4-ip4base-2vhost-gso-iperf3
+| | [Tags] | 128KB | 4C
+| | frame_size=${128000} | phy_cores=${4}
diff --git a/tests/vpp/perf/gso/2n1l-10ge2p1x710-ethip4-ip4base-2vhost-iperf3.robot b/tests/vpp/perf/gso/2n1l-10ge2p1x710-ethip4-ip4base-2vhost-iperf3.robot
new file mode 100644
index 0000000000..c31097eb7c
--- /dev/null
+++ b/tests/vpp/perf/gso/2n1l-10ge2p1x710-ethip4-ip4base-2vhost-iperf3.robot
@@ -0,0 +1,121 @@
+# Copyright (c) 2021 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/shared/default.robot
+|
+| Force Tags | 2_NODE_SINGLE_LINK_TOPO | PERFTEST | HW_ENV | MRR
+| ... | NIC_Intel-X710 | IP4FWD | BASE | IP4BASE | DRV_VHOST
+| ... | RXQ_SIZE_1024 | TXQ_SIZE_1024 | GSO_TRUE
+| ... | ethip4-ip4base-2vhost-gso
+|
+| Suite Setup | Setup suite topology interfaces
+| Suite Teardown | Tear down suite
+| Test Setup | Setup test
+| Test Teardown | Tear down test | iPerf3 | vhost
+|
+| Test Template | Local Template
+|
+| Documentation | *RFC2544: Pkt throughput IPv4 routing test cases with VHOST*
+|
+| ... | *[Top] Network Topologies:* DUT1 1-node topology without physical links.
+| ... | *[Enc] Packet Encapsulations:* Eth-IPv4-TCP.
+| ... | *[Cfg] DUT configuration:* DUT1 is configured with IPv4 routing.
+| ... | *[Ver] TG verification:* iPerf3 client/server is used for Packet\
+| ... | generation and verification.
+| ... | *[Ref] Applicable standard specifications:* RFC2544.
+
+*** Variables ***
+| @{plugins_to_enable}= | ping_plugin.so
+| ${crypto_type}= | ${None}
+| ${nic_name}= | Intel-X710
+| ${nic_driver}= | vhost
+| ${nic_rxq_size}= | 1024
+| ${nic_txq_size}= | 1024
+| ${nic_pfs}= | 2
+| ${nic_vfs}= | 0
+| ${osi_layer}= | L7
+| ${overhead}= | ${0}
+# Qemu settings:
+| ${enable_gso}= | ${False}
+| ${enable_csum}= | ${False}
+| ${nf_dtcr}= | ${1}
+| ${nf_dtc}= | ${4}
+# iPerf3 client settings:
+| ${iperf_client_bind}= | 1.1.1.1
+| ${iperf_client_bind_gw}= | 1.1.1.2
+| ${iperf_client_bind_mask}= | 30
+| ${iperf_client_interface}= | ens6
+| ${iperf_client_namespace}= | ${None}
+| ${iperf_client_udp}= | ${False}
+| ${iperf_client_node}= | DUT1_2
+| ${iperf_client_affinity} | 1
+# iPerf3 server settings:
+| ${iperf_server_bind}= | 2.2.2.2
+| ${iperf_server_bind_gw}= | 2.2.2.1
+| ${iperf_server_bind_mask}= | 30
+| ${iperf_server_interface}= | ens6
+| ${iperf_server_namespace}= | ${None}
+| ${iperf_server_node}= | DUT1_1
+| ${iperf_server_pf_key}= | ${None}
+# Trial data overwrite:
+| ${trial_duration}= | ${30}
+| ${trial_multiplicity}= | ${4}
+
+*** Keywords ***
+| Local Template
+| | [Documentation]
+| | ... | [Cfg] DUT configuration: DUT1 is configured with IPv4 routing.
+| | ... | [Ver] Measure MaxReceivedRate for ${frame_size}B frames\
+| | ... | using burst trials throughput test.\
+| |
+| | ... | *Arguments:*
+| | ... | - frame_size - Framesize in Bytes in integer. Type: integer, string
+| | ... | - phy_cores - Number of physical cores. Type: integer
+| | ... | - rxq - Number of RX queues, default value: ${None}. Type: integer
+| |
+| | [Arguments] | ${frame_size} | ${phy_cores} | ${rxq}=${None}
+| |
+| | Set Test Variable | \${frame_size}
+| | Set Test Variable | \${rxq_ratio} | ${1}
+| |
+| | Given Set Jumbo
+| | And Add worker threads to all DUTs | ${phy_cores} | ${rxq}
+| | And Pre-initialize layer driver | ${nic_driver}
+| | And Apply startup configuration on all VPP DUTs
+| | When Initialize layer driver | ${nic_driver} | validate=${False}
+| | And Initialize layer interface
+| | And VPP Interface Set IP Address
+| | ... | ${dut1} | ${DUT1_${int}1}[0]
+| | ... | ${iperf_server_bind_gw} | ${iperf_server_bind_mask}
+| | And VPP Interface Set IP Address
+| | ... | ${dut1} | ${DUT1_${int}2}[0]
+| | ... | ${iperf_client_bind_gw} | ${iperf_client_bind_mask}
+| | And Configure chains of NFs connected via vhost-user on single node
+| | ... | node=DUT1 | nf_nodes=${2} | vnf=iperf3 | auto_scale=${True}
+| | ... | fixed_auto_scale=${True} | validate=${False}
+| | And Get CPU Info from All Nodes | ${nodes}
+| | Traffic should pass with maximum rate on iPerf3
+
+*** Test Cases ***
+| 128KB-1c-ethip4-ip4base-2vhost-iperf3
+| | [Tags] | 128KB | 1C
+| | frame_size=${128000} | phy_cores=${1}
+
+| 128KB-2c-ethip4-ip4base-2vhost-iperf3
+| | [Tags] | 128KB | 2C
+| | frame_size=${128000} | phy_cores=${2}
+
+| 128KB-4c-ethip4-ip4base-2vhost-iperf3
+| | [Tags] | 128KB | 4C
+| | frame_size=${128000} | phy_cores=${4}
diff --git a/tests/vpp/perf/gso/regenerate_testcases.py b/tests/vpp/perf/gso/regenerate_testcases.py
new file mode 100755
index 0000000000..87521e662d
--- /dev/null
+++ b/tests/vpp/perf/gso/regenerate_testcases.py
@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+
+# Copyright (c) 2021 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.
+
+from resources.libraries.python.autogen.Regenerator import Regenerator
+
+Regenerator().regenerate_glob(u"*.robot")