[dts][PATCH V2 2/3] test_plans/vm2vm_virtio_net_perf_cbdma_test_plan: add vm2vm_virtio_net_perf_cbdma testplan

[Wei Ling <weix.ling@intel.com>]

v1:
As commit 53d3f4778c(vhost: integrate dmadev in asynchronous data-path),
add new testsuite vm2vm_virtio_net_perf_cbdma for coverage the vm2vm
split ring and packed ring path test with cbdma.
1) Add new testplan vm2vm_virtio_net_perf_cbdma_test_plan into test_plans.

v2:
Modify the `Description` content in test_plan.

Signed-off-by: Wei Ling <weix.ling@intel.com>
---
 .../vm2vm_virtio_net_perf_cbdma_test_plan.rst | 891 ++++++++++++++++++
 1 file changed, 891 insertions(+)
 create mode 100644 test_plans/vm2vm_virtio_net_perf_cbdma_test_plan.rst

diff --git a/test_plans/vm2vm_virtio_net_perf_cbdma_test_plan.rst b/test_plans/vm2vm_virtio_net_perf_cbdma_test_plan.rst
new file mode 100644
index 00000000..6b62aafa
--- /dev/null
+++ b/test_plans/vm2vm_virtio_net_perf_cbdma_test_plan.rst
@@ -0,0 +1,891 @@
+.. Copyright (c) <2022>, Intel Corporation
+   All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary forim must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+
+   - Neither the name of Intel Corporation nor the names of its
+     contributors may be used to endorse or promote products derived
+     from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+   COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+   OF THE POSSIBILITY OF SUCH DAMAGE.
+
+=================================================
+VM2VM vhost-user/virtio-net with CBDMA test plan
+=================================================
+
+Description
+===========
+
+Vhost asynchronous data path leverages DMA devices to offload memory copies from the CPU and it is implemented in an asynchronous way.
+In addition, vhost supports M:N mapping between vrings and DMA virtual channels. Specifically, one vring can use multiple different DMA
+channels and one DMA channel can be shared by multiple vrings at the same time.Vhost enqueue operation with CBDMA channels is supported
+in both split and packed ring.
+This document provides the test plan for testing the following features when Vhost-user using asynchronous data path with
+CBDMA in VM2VM virtio-net topology.
+1. check Vhost tx offload function by verifing the TSO/cksum in the TCP/IP stack with vm2vm split ring and packed ring 
+vhost-user/virtio-net mergeable path.
+2.Check the payload of large packet (larger than 1MB) is valid after forwarding packets with vm2vm split ring
+and packed ring vhost-user/virtio-net mergeable and non-mergeable path.
+3. Multi-queues number dynamic change in vm2vm vhost-user/virtio-net with split ring and packed ring.
+
+Note:
+1.For packed virtqueue virtio-net test, need qemu version > 4.2.0 and VM kernel version > 5.1, and packed ring multi-queues not support reconnect in qemu yet.
+2.For split virtqueue virtio-net with multi-queues server mode test, need qemu version >= 5.2.0, dut to old qemu exist reconnect issue when multi-queues test.
+3.When DMA devices are bound to vfio driver, VA mode is the default and recommended. For PA mode, page by page mapping may
+exceed IOMMU's max capability, better to use 1G guest hugepage.
+4.DPDK local patch that about vhost pmd is needed when testing Vhost asynchronous data path with testpmd.
+
+For more about dpdk-testpmd sample, please refer to the DPDK docments:
+https://doc.dpdk.org/guides/testpmd_app_ug/run_app.html
+For more about qemu, you can refer to the qemu doc: https://qemu-project.gitlab.io/qemu/system/invocation.html
+
+Prerequisites
+=============
+
+Topology
+--------
+      Test flow: Virtio-net-->Vhost-->Testpmd-->Vhost-->Virtio-net
+
+Software
+--------
+      iperf
+      qemu: https://download.qemu.org/qemu-6.2.0.tar.xz
+
+General set up
+--------------
+1. Compile DPDK::
+
+      # CC=gcc meson --werror -Denable_kmods=True -Dlibdir=lib -Dexamples=all --default-library=<dpdk build dir>
+      # ninja -C <dpdk build dir> -j 110
+      For example:
+      CC=gcc meson --werror -Denable_kmods=True -Dlibdir=lib -Dexamples=all --default-library=x86_64-native-linuxapp-gcc
+      ninja -C x86_64-native-linuxapp-gcc -j 110
+
+2. Get the PCI device ID and DMA device ID of DUT, for example, 0000:18:00.0 is PCI device ID, 0000:00:04.0, 0000:00:04.1 is DMA device ID::
+
+      <dpdk dir># ./usertools/dpdk-devbind.py -s
+
+      Network devices using kernel driver
+      ===================================
+      0000:18:00.0 'Device 159b' if=ens785f0 drv=ice unused=vfio-pci
+
+      DMA devices using kernel driver
+      ===============================
+      0000:00:04.0 'Sky Lake-E CBDMA Registers 2021' drv=ioatdma unused=vfio-pci
+      0000:00:04.1 'Sky Lake-E CBDMA Registers 2021' drv=ioatdma unused=vfio-pci
+
+Test case
+=========
+
+Common steps
+------------
+1. Bind 2 CBDMA channels to vfio-pci::
+
+      <dpdk dir># ./usertools/dpdk-devbind.py -b vfio-pci <DUT port DMA device id>
+
+      For example, Bind 1 NIC port and 2 CBDMA channels:
+      <dpdk dir># ./usertools/dpdk-devbind.py -b vfio-pci 0000:00:04.0,0000:00:04.1
+
+Test Case 1: VM2VM split ring vhost-user/virtio-net CBDMA enable test with tcp traffic
+--------------------------------------------------------------------------------------
+This case test the function of Vhost tx offload in the topology of vhost-user/virtio-net split ring mergeable path 
+by verifing the TSO/cksum in the TCP/IP stack when vhost uses the asynchronous enqueue operations with CBDMA channels.
+
+1. Bind 2 CBDMA channels to vfio-pci, as common step 1.
+
+2. Launch vhost by below command::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-4 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 \
+	--vdev 'net_vhost0,iface=vhost-net0,queues=1,dmas=[txq0],dma_ring_size=2048' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=1,dmas=[txq0],dma_ring_size=2048' \
+	--iova=va -- -i --nb-cores=2 --txd=1024 --rxd=1024 --txq=1 --rxq==1 --lcore-dma=[lcore3@0000:00:04.0,lcore4@0000:00:04.1]
+	testpmd>start
+
+3. Launch VM1 and VM2::
+
+	taskset -c 32 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 1 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge1G0,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+	-chardev socket,path=/tmp/vm1_qga0.sock,server,nowait,id=vm1_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm1_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm1_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+	-chardev socket,id=char0,path=./vhost-net0 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,\
+	csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on -vnc :10
+
+	taskset -c 33 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 1 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge1G1,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+	-chardev socket,id=char0,path=./vhost-net1 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,\
+	csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on -vnc :12
+
+4. On VM1, set virtio device IP and run arp protocal::
+
+	ifconfig ens5 1.1.1.2
+	arp -s 1.1.1.8 52:54:00:00:00:02
+
+5. On VM2, set virtio device IP and run arp protocal::
+
+	ifconfig ens5 1.1.1.8
+	arp -s 1.1.1.2 52:54:00:00:00:01
+
+6. Check the iperf performance between two VMs by below commands::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+7. Check that 2VMs can receive and send big packets to each other through vhost log. Port 0 should have tx packets above 1522, Port 1 should have rx packets above 1522::
+
+	testpmd>show port xstats all
+
+Test Case 2: VM2VM split ring vhost-user/virtio-net mergeable 8 queues CBDMA enable test with large packet payload valid check
+------------------------------------------------------------------------------------------------------------------------------
+This case uses iperf and scp to test the payload of large packet (larger than 1MB) is valid after packets forwarding in 
+vm2vm vhost-user/virtio-net split ring mergeable path when vhost uses the asynchronous enqueue operations with CBDMA channels.
+The dynamic change of multi-queues number, iova as VA and PA mode also test.
+
+1. Bind 16 CBDMA channels to vfio-pci, as common step 1.
+
+2. Launch vhost by below command::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
+	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7]' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8 \
+	--lcore-dma=[lcore2@0000:00:04.0,lcore2@0000:00:04.1,lcore2@0000:00:04.2,lcore2@0000:00:04.3,lcore2@0000:00:04.4,lcore2@0000:00:04.5,lcore3@0000:00:04.6,lcore3@0000:00:04.7,lcore4@0000:80:04.0,lcore4@0000:80:04.1,lcore4@0000:80:04.2,lcore4@0000:80:04.3,lcore4@0000:80:04.4,lcore4@0000:80:04.5,lcore4@0000:80:04.6,lcore5@0000:80:04.7]
+	testpmd>start
+
+3. Launch VM1 and VM2 using qemu::
+
+	taskset -c 32 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+	-chardev socket,id=char0,path=./vhost-net0,server \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :10
+
+	taskset -c 40 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+	-chardev socket,id=char0,path=./vhost-net1,server \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :12
+
+4. On VM1, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 8
+	ifconfig ens5 1.1.1.2
+	arp -s 1.1.1.8 52:54:00:00:00:02
+
+5. On VM2, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 8
+	ifconfig ens5 1.1.1.8
+	arp -s 1.1.1.2 52:54:00:00:00:01
+
+6. Scp 1MB file form VM1 to VM2::
+
+	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
+
+7. Check the iperf performance between two VMs by below commands::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+8. Quit and relaunch vhost w/ diff CBDMA channels::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
+	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq1;txq2;txq3;txq4;txq5;txq6;txq7]' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8 \
+	--lcore-dma=[lcore2@0000:00:04.0,lcore2@0000:00:04.1,lcore2@0000:00:04.2,lcore2@0000:00:04.3,lcore3@0000:00:04.0,lcore3@0000:00:04.2,lcore3@0000:00:04.4,lcore3@0000:00:04.5,lcore3@0000:00:04.6,lcore3@0000:00:04.7,lcore4@0000:00:04.1,lcore4@0000:00:04.3,lcore4@0000:80:04.0,lcore4@0000:80:04.1,lcore4@0000:80:04.2,lcore4@0000:80:04.3,lcore4@0000:80:04.4,lcore4@0000:80:04.5,lcore4@0000:80:04.6,lcore5@0000:80:04.7]
+	testpmd>start
+
+9. Rerun step 6-7.
+
+10. Quit and relaunch vhost w/ iova=pa::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
+	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \
+	--iova=pa -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8 \
+	--lcore-dma=[lcore2@0000:00:04.0,lcore2@0000:00:04.1,lcore2@0000:00:04.2,lcore2@0000:00:04.3,lcore3@0000:00:04.0,lcore3@0000:00:04.2,lcore3@0000:00:04.4,lcore3@0000:00:04.5,lcore3@0000:00:04.6,lcore3@0000:00:04.7,lcore4@0000:00:04.1,lcore4@0000:00:04.3,lcore4@0000:80:04.0,lcore4@0000:80:04.1,lcore4@0000:80:04.2,lcore4@0000:80:04.3,lcore4@0000:80:04.4,lcore4@0000:80:04.5,lcore4@0000:80:04.6,lcore5@0000:80:04.7]
+	testpmd>start
+
+11. Rerun step 6-7.
+
+12. Quit and relaunch vhost w/o CBDMA channels::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=4' --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=4' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=4 --rxq=4
+	testpmd>start
+
+13. On VM1, set virtio device::
+
+	ethtool -L ens5 combined 4
+
+14. On VM2, set virtio device::
+
+	ethtool -L ens5 combined 4
+
+15. Scp 1MB file form VM1 to VM2::
+
+	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
+
+16. Check the iperf performance and compare with CBDMA enable performance, ensure CMDMA enable performance is higher::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+17. Quit and relaunch vhost with 1 queues::
+
+     <dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
+     --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=4' --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=4' \
+     -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=1 --rxq=1
+     testpmd>start
+
+18. On VM1, set virtio device::
+
+	ethtool -L ens5 combined 1
+
+19. On VM2, set virtio device::
+
+	ethtool -L ens5 combined 1
+
+20. Scp 1MB file form VM1 to VM2M, check packets can be forwarding success by scp::
+
+	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
+
+21. Check the iperf performance, ensure queue0 can work from vhost side::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+Test Case 3: VM2VM split ring vhost-user/virtio-net non-mergeable 8 queues CBDMA enable test with large packet payload valid check
+----------------------------------------------------------------------------------------------------------------------------------
+This case uses iperf and scp to test the payload of large packet (larger than 1MB) is valid after packets forwarding in 
+vm2vm vhost-user/virtio-net split ring non-mergeable path when vhost uses the asynchronous enqueue operations with dsa dpdk driver.
+The dynamic change of multi-queues number also test.
+
+1. Bind 16 CBDMA channels to vfio-pci, as common step 1.
+
+2. Launch vhost by below command::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
+	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7]' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8 \
+	--lcore-dma=[lcore2@0000:00:04.0,lcore2@0000:00:04.1,lcore2@0000:00:04.2,lcore2@0000:00:04.3,lcore2@0000:00:04.4,lcore2@0000:00:04.5,lcore3@0000:00:04.6,lcore3@0000:00:04.7,lcore4@0000:80:04.0,lcore4@0000:80:04.1,lcore4@0000:80:04.2,lcore4@0000:80:04.3,lcore4@0000:80:04.4,lcore4@0000:80:04.5,lcore4@0000:80:04.6,lcore5@0000:80:04.7]
+	testpmd>start
+
+3. Launch VM1 and VM2::
+
+	taskset -c 32 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+	-chardev socket,id=char0,path=./vhost-net0,server \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=off,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :10
+
+	taskset -c 40 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+	-chardev socket,id=char0,path=./vhost-net1,server \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=off,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :12
+
+4. On VM1, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 8
+	ifconfig ens5 1.1.1.2
+	arp -s 1.1.1.8 52:54:00:00:00:02
+
+5. On VM2, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 8
+	ifconfig ens5 1.1.1.8
+	arp -s 1.1.1.2 52:54:00:00:00:01
+
+6. Scp 1MB file form VM1 to VM2::
+
+	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
+
+7. Check the iperf performance between two VMs by below commands::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+8. Quit and relaunch vhost w/ diff CBDMA channels::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
+	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq1;txq2;txq3;txq4;txq5;txq6]' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8 \
+	--lcore-dma=[lcore2@0000:00:04.0,lcore2@0000:00:04.1,lcore2@0000:00:04.2,lcore2@0000:00:04.3,lcore3@0000:00:04.0,lcore3@0000:00:04.2,lcore3@0000:00:04.4,lcore3@0000:00:04.5,lcore3@0000:00:04.6,lcore3@0000:00:04.7,lcore4@0000:00:04.1,lcore4@0000:00:04.3,lcore4@0000:80:04.0,lcore4@0000:80:04.1,lcore4@0000:80:04.2,lcore4@0000:80:04.3,lcore4@0000:80:04.4,lcore4@0000:80:04.5,lcore4@0000:80:04.6,lcore5@0000:80:04.7]
+	testpmd>start
+
+9. Rerun step 6-7.
+
+10. Quit and relaunch vhost ports w/o CBDMA channels::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8' --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8
+	testpmd>start
+
+11. Scp 1MB file form VM1 to VM2::
+
+	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
+
+12. Check the iperf performance and compare with CBDMA enable performance, ensure CMDMA enable performance is higher::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+13. Quit and relaunch vhost ports with 1 queues::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8' --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=1 --rxq=1
+	testpmd>start
+
+14. On VM1, set virtio device::
+
+	ethtool -L ens5 combined 1
+
+15. On VM2, set virtio device::
+
+	ethtool -L ens5 combined 1
+
+16. Scp 1MB file form VM1 to VM2M, check packets can be forwarding success by scp::
+
+	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
+
+17. Check the iperf performance, ensure queue0 can work from vhost side::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+Test Case 4: VM2VM split ring vhost-user/virtio-net mergeable 16 queues CBDMA enable test with large packet payload valid check
+-------------------------------------------------------------------------------------------------------------------------------
+This case uses iperf and scp to test the payload of large packet (larger than 1MB) is valid after packets forwarding in
+vm2vm vhost-user/virtio-net split ring mergeable path and 16 queues when vhost uses the asynchronous enqueue operations with dsa dpdk
+and kernel driver.
+
+1. Bind 16 CBDMA channels to vfio-pci, as common step 1.
+
+2. Launch vhost by below command::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-9 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
+	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=16,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;txq8;txq9;txq10;txq11;txq12;txq13;txq14;txq15]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=16,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;txq8;txq9;txq10;txq11;txq12;txq13;txq14;txq15]' \
+	--iova=va -- -i --nb-cores=8 --txd=1024 --rxd=1024 --txq=16 --rxq=16 \
+	--lcore-dma=[lcore2@0000:00:04.0,lcore2@0000:00:04.1,lcore3@0000:00:04.2,lcore3@0000:00:04.3,lcore4@0000:00:04.4,lcore4@0000:00:04.5,lcore5@0000:00:04.6,lcore5@0000:00:04.7,lcore6@0000:80:04.0,lcore6@0000:80:04.1,lcore7@0000:80:04.2,lcore7@0000:80:04.3,lcore8@0000:80:04.4,lcore8@0000:80:04.5,lcore9@0000:80:04.6,lcore9@0000:80:04.7]
+	testpmd>start
+
+3. Launch VM1 and VM2 using qemu::
+
+	taskset -c 32 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+	-chardev socket,id=char0,path=./vhost-net0,server \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=16 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :10
+
+	taskset -c 40 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+	-chardev socket,id=char0,path=./vhost-net1,server \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=16 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :12
+
+4. On VM1, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 16
+	ifconfig ens5 1.1.1.2
+	arp -s 1.1.1.8 52:54:00:00:00:02
+
+5. On VM2, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 16
+	ifconfig ens5 1.1.1.8
+	arp -s 1.1.1.2 52:54:00:00:00:01
+
+6. Scp 1MB file form VM1 to VM2::
+
+	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
+
+7. Check the iperf performance between two VMs by below commands::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+Test Case 5: VM2VM packed ring vhost-user/virtio-net CBDMA enable test with tcp traffic
+---------------------------------------------------------------------------------------
+This case test the function of Vhost tx offload in the topology of vhost-user/virtio-net packed ring mergeable path
+by verifing the TSO/cksum in the TCP/IP stack when vhost uses the asynchronous enqueue operations with CBDMA channels.
+
+1. Bind 2 CBDMA channels to vfio-pci, as common step 1.
+
+2. Launch vhost by below command::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-4 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 \
+	--vdev 'net_vhost0,iface=vhost-net0,queues=1,dmas=[txq0]' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=1,dmas=[txq0]' \
+	--iova=va -- -i --nb-cores=2 --txd=1024 --rxd=1024 --txq=1 --rxq=1 --lcore-dma=[lcore3@0000:00:04.0,lcore4@0000:00:04.1]
+	testpmd>start
+
+3. Launch VM1 and VM2 on socket 1 with qemu::
+
+	taskset -c 32 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 1 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+	-chardev socket,id=char0,path=./vhost-net0 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,\
+	csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :10
+
+	taskset -c 33 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 1 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+	-chardev socket,id=char0,path=./vhost-net1 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,\
+	csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :12
+
+4. On VM1, set virtio device IP and run arp protocal::
+
+	ifconfig ens5 1.1.1.2
+	arp -s 1.1.1.8 52:54:00:00:00:02
+
+5. On VM2, set virtio device IP and run arp protocal::
+
+	ifconfig ens5 1.1.1.8
+	arp -s 1.1.1.2 52:54:00:00:00:01
+
+6. Check the iperf performance between two VMs by below commands::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+7. Check 2VMs can receive and send big packets to each other through vhost log. Port 0 should have tx packets above 1522, Port 1 should have rx packets above 1522::
+
+	testpmd>show port xstats all
+
+Test Case 6: VM2VM virtio-net packed ring mergeable 8 queues CBDMA enable test with large packet payload valid check
+--------------------------------------------------------------------------------------------------------------------
+This case uses iperf and scp to test the payload of large packet (larger than 1MB) is valid after packets forwarding in
+vm2vm vhost-user/virtio-net packed ring mergeable path and 8 queues when vhost uses the asynchronous enqueue operations with CBDMA channels.
+
+1. Bind 16 CBDMA channels to vfio-pci, as common step 1.
+
+2. Launch vhost by below command::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
+	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
+	--vdev 'net_vhost0,iface=vhost-net0,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8 \
+	--lcore-dma=[lcore2@0000:00:04.0,lcore2@0000:00:04.1,lcore2@0000:00:04.2,lcore2@0000:00:04.3,lcore3@0000:00:04.0,lcore3@0000:00:04.2,lcore3@0000:00:04.4,lcore3@0000:00:04.5,lcore3@0000:00:04.6,lcore3@0000:00:04.7,lcore4@0000:00:04.1,lcore4@0000:00:04.3,lcore4@0000:80:04.0,lcore4@0000:80:04.1,lcore4@0000:80:04.2,lcore4@0000:80:04.3,lcore4@0000:80:04.4,lcore4@0000:80:04.5,lcore4@0000:80:04.6,lcore5@0000:80:04.7]
+	testpmd>start
+
+3. Launch VM1 and VM2 with qemu::
+
+	taskset -c 32 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+	-chardev socket,id=char0,path=./vhost-net0 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :10
+
+	taskset -c 40 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+	-chardev socket,id=char0,path=./vhost-net1 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :12
+
+4. On VM1, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 8
+	ifconfig ens5 1.1.1.2
+	arp -s 1.1.1.8 52:54:00:00:00:02
+
+5. On VM2, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 8
+	ifconfig ens5 1.1.1.8
+	arp -s 1.1.1.2 52:54:00:00:00:01
+
+6. Scp 1MB file form VM1 to VM2::
+
+	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
+
+7. Check the iperf performance between two VMs by below commands::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+8. Rerun step 6-7 five times.
+
+Test Case 7: VM2VM virtio-net packed ring non-mergeable 8 queues CBDMA enable test with large packet payload valid check
+------------------------------------------------------------------------------------------------------------------------
+This case uses iperf and scp to test the payload of large packet (larger than 1MB) is valid after packets forwarding in
+vm2vm vhost-user/virtio-net packed ring non-mergeable path and 8 queues when vhost uses the asynchronous enqueue operations with CBDMA channels.
+
+1. Bind 16 CBDMA channels to vfio-pci, as common step 1.
+
+2. Launch vhost by below command::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
+	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
+	--vdev 'net_vhost0,iface=vhost-net0,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7]' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7]' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8 \
+	--lcore-dma=[lcore2@0000:00:04.0,lcore2@0000:00:04.1,lcore2@0000:00:04.2,lcore2@0000:00:04.3,lcore2@0000:00:04.4,lcore2@0000:00:04.5,lcore3@0000:00:04.6,lcore3@0000:00:04.7,lcore4@0000:80:04.0,lcore4@0000:80:04.1,lcore4@0000:80:04.2,lcore4@0000:80:04.3,lcore4@0000:80:04.4,lcore4@0000:80:04.5,lcore4@0000:80:04.6,lcore5@0000:80:04.7]
+	testpmd>start
+
+3. Launch VM1 and VM2::
+
+	taskset -c 32 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+	-chardev socket,id=char0,path=./vhost-net0 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=off,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :10
+
+	taskset -c 40 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+	-chardev socket,id=char0,path=./vhost-net1 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=off,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :12
+
+4. On VM1, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 8
+	ifconfig ens5 1.1.1.2
+	arp -s 1.1.1.8 52:54:00:00:00:02
+
+5. On VM2, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 8
+	ifconfig ens5 1.1.1.8
+	arp -s 1.1.1.2 52:54:00:00:00:01
+
+6. Scp 1MB file form VM1 to VM2::
+
+	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
+
+7. Check the iperf performance between two VMs by below commands::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+8. Rerun step 6-7 five times.
+
+Test Case 8: VM2VM virtio-net packed ring mergeable 16 queues CBDMA enabled test with large packet payload valid check
+----------------------------------------------------------------------------------------------------------------------
+This case uses iperf and scp to test the payload of large packet (larger than 1MB) is valid after packets forwarding in
+vm2vm vhost-user/virtio-net packed ring mergeable path and 16 queues when vhost uses the asynchronous enqueue operations with dsa dpdk
+and kernel driver.
+
+1. Bind 16 CBDMA channels to vfio-pci, as common step 1.
+
+2. Launch vhost by below command::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-9 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
+	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
+	--vdev 'net_vhost0,iface=vhost-net0,queues=16,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;txq8;txq9;txq10;txq11,txq12,txq13;txq14;txq15]' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=16,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;txq8;txq9;txq10;txq11,txq12,txq13;txq14;txq15]' \
+	--iova=pa -- -i --nb-cores=8 --txd=1024 --rxd=1024 --txq=16 --rxq=16 \
+	--lcore-dma=[lcore2@0000:00:04.0,lcore2@0000:00:04.1,lcore3@0000:00:04.2,lcore3@0000:00:04.3,lcore4@0000:00:04.4,lcore4@0000:00:04.5,lcore5@0000:00:04.6,lcore5@0000:00:04.7,lcore6@0000:80:04.0,lcore6@0000:80:04.1,lcore7@0000:80:04.2,lcore7@0000:80:04.3,lcore8@0000:80:04.4,lcore8@0000:80:04.5,lcore9@0000:80:04.6,lcore9@0000:80:04.7]
+	testpmd>start
+
+3. Launch VM1 and VM2 with qemu::
+
+	taskset -c 32 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge1G0,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+	-chardev socket,id=char0,path=./vhost-net0 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=16 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :10
+
+	taskset -c 40 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge1G1,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+	-chardev socket,id=char0,path=./vhost-net1 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=16 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :12
+
+4. On VM1, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 16
+	ifconfig ens5 1.1.1.2
+	arp -s 1.1.1.8 52:54:00:00:00:02
+
+5. On VM2, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 16
+	ifconfig ens5 1.1.1.8
+	arp -s 1.1.1.2 52:54:00:00:00:01
+
+6. Scp 1MB file form VM1 to VM2::
+
+	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
+
+7. Check the iperf performance between two VMs by below commands::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+8. Rerun step 6-7 five times.
+
+Test Case 9: VM2VM packed ring vhost-user/virtio-net CBDMA enable test with tcp traffic when set iova=pa
+--------------------------------------------------------------------------------------------------------
+This case test the function of Vhost tx offload in the topology of vhost-user/virtio-net packed ring mergeable path
+by verifing the TSO/cksum in the TCP/IP stack when vhost uses the asynchronous enqueue operations with CBDMA channels
+and iova as PA mode.
+
+1. Bind 2 CBDMA channels to vfio-pci, as common step 1.
+
+2. Launch vhost by below command::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-4 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 \
+	--vdev 'net_vhost0,iface=vhost-net0,queues=1,dmas=[txq0]' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=1,dmas=[txq0]' \
+	--iova=pa -- -i --nb-cores=2 --txd=1024 --rxd=1024 --txq=1 --rxq=1 --lcore-dma=[lcore3@0000:00:04.0,lcore4@0000:00:04.1]
+	testpmd>start
+
+3. Launch VM1 and VM2 on socket 1 with qemu::
+
+	taskset -c 32 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 1 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+	-chardev socket,id=char0,path=./vhost-net0 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,\
+	csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :10
+
+	taskset -c 33 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 1 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+	-chardev socket,id=char0,path=./vhost-net1 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,\
+	csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :12
+
+4. On VM1, set virtio device IP and run arp protocal::
+
+	ifconfig ens5 1.1.1.2
+	arp -s 1.1.1.8 52:54:00:00:00:02
+
+5. On VM2, set virtio device IP and run arp protocal::
+
+	ifconfig ens5 1.1.1.8
+	arp -s 1.1.1.2 52:54:00:00:00:01
+
+6. Scp 1MB file form VM1 to VM2::
+
+	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
+
+7. Check the iperf performance between two VMs by below commands::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+8. Check 2VMs can receive and send big packets to each other through vhost log. Port 0 should have tx packets above 1522, Port 1 should have rx packets above 1522::
+
+	testpmd>show port xstats all
+
+Test Case 10: VM2VM virtio-net packed ring mergeable 8 queues CBDMA enable and PA mode test with large packet payload valid check
+---------------------------------------------------------------------------------------------------------------------------------
+This case uses iperf and scp to test the payload of large packet (larger than 1MB) is valid after packets forwarding in
+vm2vm vhost-user/virtio-net packed ring mergeable path and 8 queues when vhost uses the asynchronous enqueue operations with CBDMA channels
+and iova as PA mode.
+
+1. Bind 16 CBDMA channels to vfio-pci, as common step 1.
+
+2. Launch vhost by below command::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
+	-a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
+	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
+	--vdev 'net_vhost0,iface=vhost-net0,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \
+	--iova=pa -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8 \
+	--lcore-dma=[lcore2@0000:00:04.0,lcore2@0000:00:04.1,lcore2@0000:00:04.2,lcore2@0000:00:04.3,lcore2@0000:00:04.4,lcore2@0000:00:04.5,lcore3@0000:00:04.6,lcore3@0000:00:04.7,lcore4@0000:80:04.0,lcore4@0000:80:04.1,lcore4@0000:80:04.2,lcore4@0000:80:04.3,lcore4@0000:80:04.4,lcore4@0000:80:04.5,lcore4@0000:80:04.6,lcore5@0000:80:04.7]
+	testpmd>start
+
+3. Launch VM1 and VM2 with qemu::
+
+	taskset -c 32 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+	-chardev socket,id=char0,path=./vhost-net0 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :10
+
+	taskset -c 40 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 8 -m 4096 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+	-chardev socket,id=char0,path=./vhost-net1 \
+	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,\
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :12
+
+4. On VM1, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 8
+	ifconfig ens5 1.1.1.2
+	arp -s 1.1.1.8 52:54:00:00:00:02
+
+5. On VM2, set virtio device IP and run arp protocal::
+
+	ethtool -L ens5 combined 8
+	ifconfig ens5 1.1.1.8
+	arp -s 1.1.1.2 52:54:00:00:00:01
+
+6. Scp 1MB file form VM1 to VM2::
+
+	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
+
+7. Check the iperf performance between two VMs by below commands::
+
+	Under VM1, run: `iperf -s -i 1`
+	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+
+8. Rerun step 6-7 five times.
-- 
2.34.1