feat(reassembly): add few suites for ip reassembly

In tunneling scenarios, VPP needs to reassembly packet fragments
before decapsulation. Conveniently, VPP also fragments the packets
after encapsulation (at least for some encapsulation protocols)
if they do not fit into MTU.

So this change adds few suites, adapted from existing 3-node ones
which additionally lower MTU on DUT1-DUT2 link.
The intended packet size is 1518B. 64B packets will fit,
and most of IMIX packets will also fit without fragmentation.
VPP refuses to reassembly 9000B packets as they have too many fragments.

+ Add a keyword so suites need only one additional line of code.
+ Add new test tag REASSEMBLY for the added suites.
+ Tell autogen the one soak test case for reaseembly should be 1518B.
- It is possible to increase fragment limit for 9000B, not done yet.
- Ipsec policy suites are added but they should not be used.
 - VPP does fragmentation twice (before and after encapsulation).
 - VPP does not perform reassembly (only last fragment is decrypted).
 - TRex does not realize the packet from VPP is only a fragment.
 - The result is false pass with unfairly good performance.
 + Suites still included, to simplify verifying VPP fixes for the above.

Change-Id: If33c60d767fea161d9e4ffabb8ded3d81c8f39ed
Signed-off-by: Vratko Polak <vrpolak@cisco.com>

1 files changed, 171 insertions, 0 deletions

diff --git a/tests/vpp/perf/crypto/10ge2p1x710-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr.robot b/tests/vpp/perf/crypto/10ge2p1x710-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr.robot
new file mode 100644
index 0000000000..208e7e3f3a
--- /dev/null
+++ b/tests/vpp/perf/crypto/10ge2p1x710-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr.robot
@@ -0,0 +1,171 @@
+# Copyright (c) 2023 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
+| Resource | resources/libraries/robot/crypto/ipsec.robot
+|
+| Force Tags | 3_NODE_SINGLE_LINK_TOPO | PERFTEST | HW_ENV | NDRPDR | TNL_1000
+| ... | IP4FWD | IPSEC | IPSECSW | IPSECINT | NIC_Intel-X710 | SCALE
+| ... | AES_256_GCM | AES | REASSEMBLY | DRV_VFIO_PCI
+| ... | RXQ_SIZE_0 | TXQ_SIZE_0
+| ... | ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly
+|
+| Suite Setup | Setup suite topology interfaces | performance
+| Suite Teardown | Tear down suite | performance
+| Test Setup | Setup test | performance
+| Test Teardown | Tear down test | performance | ipsec_sa
+|
+| Test Template | Local Template
+|
+| Documentation | **RFC2544: Pkt throughput IPv4 IPsec tunnel mode.**
+| ... |
+| ... | - **[Top] Network Topologies:** TG-DUT1-DUT2-TG 3-node circular \
+| ... | topology with single links between nodes.
+| ... |
+| ... | - **[Enc] Packet Encapsulations:** Eth-IPv4 on TG-DUTn, \
+| ... | Eth-IPv4-IPSec on DUT1-DUT2.
+| ... |
+| ... | - **[Cfg] DUT configuration:** DUT1 and DUT2 are configured with \
+| ... | multiple IPsec tunnels between them. DUTs get IPv4 traffic from TG, \
+| ... | encrypt it and send to another DUT, where packets are decrypted and \
+| ... | sent back to TG. The MTU on DUT-DUT link is lowered to induce packet \
+| ... | fragmentation and reassembly.
+| ... |
+| ... | - **[Ver] TG verification:** TG finds and reports throughput NDR (Non \
+| ... | Drop Rate) with zero packet loss tolerance and throughput PDR \
+| ... | (Partial Drop Rate) with non-zero packet loss tolerance (LT) \
+| ... | expressed in percentage of packets transmitted. NDR and PDR are \
+| ... | discovered for different Ethernet L2 frame sizes using MLRsearch \
+| ... | library.
+| ... | Test packets are generated by TG on \
+| ... | links to DUTs. TG traffic profile contains two L3 flow-groups \
+| ... | (flow-group per direction, number of flows per flow-group equals to \
+| ... | number of IPSec tunnels) with all packets \
+| ... | containing Ethernet header, IPv4 header with IP protocol=61 and \
+| ... | static payload. MAC addresses are matching MAC addresses of the TG \
+| ... | node interfaces. Incrementing of IP.dst (IPv4 destination address) \
+| ... | is applied to both streams.
+| ... |
+| ... | - **[Ref] Applicable standard specifications:** RFC4303 and RFC2544.
+
+*** Variables ***
+| @{plugins_to_enable}= | dpdk_plugin.so | perfmon_plugin.so
+| ... | crypto_native_plugin.so
+| ... | crypto_ipsecmb_plugin.so | crypto_openssl_plugin.so
+| ${crypto_type}= | ${None}
+| ${nic_name}= | Intel-X710
+| ${nic_driver}= | vfio-pci
+| ${nic_rxq_size}= | 0
+| ${nic_txq_size}= | 0
+| ${nic_pfs}= | 2
+| ${nic_vfs}= | 0
+| ${osi_layer}= | L3
+| ${overhead}= | ${54}
+| ${tg_if1_ip4}= | 192.168.10.254
+| ${dut1_if1_ip4}= | 192.168.10.11
+| ${dut1_if2_ip4}= | 100.0.0.1
+| ${dut2_if1_ip4}= | 200.0.0.102
+| ${dut2_if2_ip4}= | 192.168.20.11
+| ${tg_if2_ip4}= | 192.168.20.254
+| ${raddr_ip4}= | 20.0.0.0
+| ${laddr_ip4}= | 10.0.0.0
+| ${addr_range}= | ${24}
+| ${n_tunnels}= | ${1000}
+# Traffic profile:
+| ${traffic_profile}= | trex-stl-3n-ethip4-ip4dst${n_tunnels}
+
+*** Keywords ***
+| Local Template
+| | [Documentation]
+| | ... | - **[Cfg]** DUT runs IPSec tunneling AES_256_GCM config. \
+| | ... | Each DUT uses ${phy_cores} physical core(s) for worker threads.
+| | ... | - **[Ver]** Measure NDR and PDR values using MLRsearch algorithm.
+| |
+| | ... | *Arguments:*
+| | ... | - frame_size - Framesize in Bytes in integer or string (IMIX_v4_1).
+| | ... | 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}
+| |
+| | # These are enums (not strings) so they cannot be in Variables table.
+| | ${encr_alg}= | Crypto Alg AES GCM 256
+| | ${auth_alg}= | Set Variable | ${NONE}
+| | ${ipsec_proto} = | IPsec Proto ESP
+| |
+| | Given Set Max Rate And 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 Lower DUT1-DUT2 MTU For Fragmentation
+| | And Initialize IPSec in 3-node circular topology
+| | And VPP IPsec Create Tunnel Interfaces
+| | ... | ${nodes} | ${dut1_if2_ip4} | ${dut2_if1_ip4} | ${DUT1_${int}2}[0]
+| | ... | ${DUT2_${int}1}[0] | ${n_tunnels} | ${encr_alg} | ${auth_alg}
+| | ... | ${laddr_ip4} | ${raddr_ip4} | ${addr_range}
+| | Then Find NDR and PDR intervals using optimized search
+
+*** Test Cases ***
+| 64B-1c-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr
+| | [Tags] | 64B | 1C
+| | frame_size=${64} | phy_cores=${1}
+
+| 64B-2c-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr
+| | [Tags] | 64B | 2C
+| | frame_size=${64} | phy_cores=${2}
+
+| 64B-4c-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr
+| | [Tags] | 64B | 4C
+| | frame_size=${64} | phy_cores=${4}
+
+| 1518B-1c-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr
+| | [Tags] | 1518B | 1C
+| | frame_size=${1518} | phy_cores=${1}
+
+| 1518B-2c-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr
+| | [Tags] | 1518B | 2C
+| | frame_size=${1518} | phy_cores=${2}
+
+| 1518B-4c-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr
+| | [Tags] | 1518B | 4C
+| | frame_size=${1518} | phy_cores=${4}
+
+| 9000B-1c-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr
+| | [Tags] | 9000B | 1C
+| | frame_size=${9000} | phy_cores=${1}
+
+| 9000B-2c-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr
+| | [Tags] | 9000B | 2C
+| | frame_size=${9000} | phy_cores=${2}
+
+| 9000B-4c-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr
+| | [Tags] | 9000B | 4C
+| | frame_size=${9000} | phy_cores=${4}
+
+| IMIX-1c-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr
+| | [Tags] | IMIX | 1C
+| | frame_size=IMIX_v4_1 | phy_cores=${1}
+
+| IMIX-2c-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr
+| | [Tags] | IMIX | 2C
+| | frame_size=IMIX_v4_1 | phy_cores=${2}
+
+| IMIX-4c-ethip4ipsec1000tnlsw-ip4base-int-aes256gcm-reassembly-ndrpdr
+| | [Tags] | IMIX | 4C
+| | frame_size=IMIX_v4_1 | phy_cores=${4}