diff --git a/test_plans/vm2vm_virtio_net_perf_cbdma_test_plan.rst b/test_plans/vm2vm_virtio_net_perf_cbdma_test_plan.rst
index 60036743..b757b84d 100644
--- a/test_plans/vm2vm_virtio_net_perf_cbdma_test_plan.rst
+++ b/test_plans/vm2vm_virtio_net_perf_cbdma_test_plan.rst
@@ -8,63 +8,79 @@ 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.From DPDK22.07, Vhost enqueue and dequeue operation with
-CBDMA channels is supported in both split and packed ring.
+CBDMA is a kind of DMA engine, Vhost asynchronous data path leverages DMA devices
+to offload memory copies from the CPU and it is implemented in an asynchronous way.
+As a result, large packet copy can be accelerated by the DMA engine, and vhost can
+free CPU cycles for higher level functions. 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. From DPDK22.07, Vhost enqueue and dequeue 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（TSO） function by verifing the TSO/cksum in the TCP/IP stack with vm2vm split ring and packed ring
+1.Check Vhost tx offload（TSO） 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.
+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, better to use qemu version >= 5.2.0, dut to qemu(v4.2.0~v5.1.0) exist split ring multi-queues reconnection issue.
+   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. In this patch,
+   we enable asynchronous data path for vhostpmd. Asynchronous data path is enabled per tx/rx queue, and users need to specify
+   the DMA device used by the tx/rx queue. Each tx/rx queue only supports to use one DMA device (This is limited by the
+   implementation of vhostpmd), but one DMA device can be shared among multiple tx/rx queues of different vhost PMD ports.
 
-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, better to use qemu version >= 5.2.0, dut to qemu(v4.2.0~v5.1.0) exist split ring multi-queues reconnection issue.
-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.
+   Two PMD parameters are added:
+   - dmas: specify the used DMA device for a tx/rx queue.(Default: no queues enable asynchronous data path)
+   - dma-ring-size: DMA ring size.(Default: 4096).
 
-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
+   Here is an example:
+   --vdev 'eth_vhost0,iface=./s0,dmas=[txq0@0000:00.01.0;rxq0@0000:00.01.1],dma-ring-size=2048'
+
+   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
+	Test flow: Virtio-net-->Vhost-user-->Testpmd-->Vhost-user-->Virtio-net
 
 Software
 --------
-    iperf
-    qemu: https://download.qemu.org/qemu-7.0.0.tar.xz
+	iperf
+	qemu: https://download.qemu.org/qemu-7.1.0.tar.xz
 
 General set up
 --------------
 1. Compile DPDK::
 
-    # CC=gcc meson --werror -Denable_kmods=True -Dlibdir=lib -Dexamples=all --default-library=static <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=static x86_64-native-linuxapp-gcc
-    ninja -C x86_64-native-linuxapp-gcc -j 110
+	# CC=gcc meson --werror -Denable_kmods=True -Dlibdir=lib -Dexamples=all --default-library=static <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=static 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
+	<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
+	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
+	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
 =========
@@ -73,10 +89,10 @@ Common steps
 ------------
 1. Bind 2 CBDMA channels to vfio-pci::
 
-    <dpdk dir># ./usertools/dpdk-devbind.py -b vfio-pci <DUT port DMA device id>
+	<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
+	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 virtio-net split ring CBDMA enable test with tcp traffic
 ---------------------------------------------------------------------------
@@ -87,38 +103,35 @@ by verifing the TSO/cksum in the TCP/IP stack when vhost uses the asynchronous o
 
 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,tso=1,dmas=[txq0;rxq0]' \
-	--vdev 'net_vhost1,iface=vhost-net1,queues=1,tso=1,dmas=[txq0;rxq0]' \
-	--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
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-4 -n 4 --file-prefix=vhost -a 0000:00:01.0 -a 0000:00:01.1 \
+	--vdev 'net_vhost0,iface=vhost-net0,queues=1,tso=1,dmas=[txq0@0000:00:01.0;rxq0@0000:00:01.0]' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=1,tso=1,dmas=[txq0@0000:00:01.1;rxq0@0000:00:01.1]' \
+	--iova=va -- -i --nb-cores=2 --txd=1024 --rxd=1024 --txq=1 --rxq=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  \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04.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
+	-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  \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04-2.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
+	-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::
 
@@ -137,7 +150,7 @@ by verifing the TSO/cksum in the TCP/IP stack when vhost uses the asynchronous o
 
 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
+	testpmd> show port xstats all
 
 Test Case 2: VM2VM virtio-net split ring mergeable 8 queues CBDMA enable test with large packet payload valid check
 -------------------------------------------------------------------------------------------------------------------
@@ -150,19 +163,17 @@ The dynamic change of multi-queues number and iova as VA and PA mode also test.
 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,tso=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
-	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
-	--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
+	-a 0000:00:01.0 -a 0000:00:01.1 -a 0000:00:01.2 -a 0000:00:01.3 -a 0000:00:01.4 -a 0000:00:01.5 -a 0000:00:01.6 -a 0000:00:01.7 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,tso=1,queues=8,dmas=[txq0@0000:00:01.0;txq1@0000:00:01.0;txq2@0000:00:01.1;txq3@0000:00:01.1;txq4@0000:00:01.2;txq5@0000:00:01.2;txq6@0000:00:01.3;txq7@0000:00:01.3;rxq0@0000:00:01.4;rxq1@0000:00:01.4;rxq2@0000:00:01.5;rxq3@0000:00:01.5;rxq4@0000:00:01.6;rxq5@0000:00:01.6;rxq6@0000:00:01.7;rxq7@0000:00:01.7]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,queues=8,dmas=[txq0@0000:00:01.0;txq1@0000:00:01.0;txq2@0000:00:01.1;txq3@0000:00:01.1;txq4@0000:00:01.2;txq5@0000:00:01.2;txq6@0000:00:01.3;txq7@0000:00:01.3;rxq0@0000:00:01.4;rxq1@0000:00:01.4;rxq2@0000:00:01.5;rxq3@0000:00:01.5;rxq4@0000:00:01.6;rxq5@0000:00:01.6;rxq6@0000:00:01.7;rxq7@0000:00:01.7]' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8
+	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04.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 \
@@ -174,7 +185,7 @@ The dynamic change of multi-queues number and iova as VA and PA mode also test.
 
 	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04-2.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 \
@@ -205,29 +216,24 @@ The dynamic change of multi-queues number and iova as VA and PA mode also test.
 	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::
+8. Quit and relaunch vhost w/ diff CBDMA channels and legacy mode::
 
-	<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,tso=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \
-	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=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
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost -a 0000:00:01.0 -a 0000:00:01.1 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,tso=1,legacy-ol-flags=1,queues=8,dmas=[txq0@0000:00:01.0;txq1@0000:00:01.0;txq2@0000:00:01.0;txq3@0000:00:01.0;txq4@0000:00:01.0;txq5@0000:00:01.0;txq6@0000:00:01.0]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,legacy-ol-flags=1,queues=8,dmas=[txq1@0000:00:01.1;txq2@0000:00:01.1;txq3@0000:00:01.1;txq4@0000:00:01.1;txq5@0000:00:01.1;txq6@0000:00:01.1;txq7@0000:00:01.1]' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8
+	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,tso=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \
-	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=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
+	-a 0000:00:01.0 -a 0000:00:01.1 -a 0000:00:01.2 -a 0000:00:01.3 -a 0000:00:01.4 -a 0000:00:01.5 -a 0000:00:01.6 -a 0000:00:01.7 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,tso=1,queues=8,dmas=[txq0@0000:00:01.0;txq1@0000:00:01.1;txq2@0000:00:01.0;txq3@0000:00:01.1;txq4@0000:00:01.0;txq5@0000:00:01.1;txq6@0000:00:01.2]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,queues=8,dmas=[rxq0@0000:00:01.2;rxq1@0000:00:01.3;rxq2@0000:00:01.2;rxq3@0000:00:01.3;rxq4@0000:00:01.2;rxq5@0000:00:01.3;rxq6@0000:00:01.4]' \
+	--iova=pa -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8
+	testpmd> start
 
 11. Rerun step 6-7.
 
@@ -237,7 +243,7 @@ The dynamic change of multi-queues number and iova as VA and PA mode also test.
 	--vdev 'net_vhost0,iface=vhost-net0,client=1,tso=1,queues=4' \
 	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,queues=4' \
 	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=4 --rxq=4
-	testpmd>start
+	testpmd> start
 
 13. On VM1, set virtio device::
 
@@ -258,11 +264,11 @@ The dynamic change of multi-queues number and iova as VA and PA mode also test.
 
 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,tso=1,queues=4' \
-	 --vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,queues=4' \
-     -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=1 --rxq=1
-     testpmd>start
+	<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::
 
@@ -294,17 +300,16 @@ The dynamic change of multi-queues number and the reconnection also test.
 	<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,tso=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
-	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
-	--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
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,tso=1,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.1;txq2@0000:00:04.2;txq3@0000:00:04.3;txq4@0000:00:04.4;txq5@0000:00:04.5;txq6@0000:00:04.6;txq7@0000:00:04.7;rxq0@0000:00:04.0;rxq1@0000:00:04.1;rxq2@0000:00:04.2;rxq3@0000:00:04.3;rxq4@0000:00:04.4;rxq5@0000:00:04.5;rxq6@0000:00:04.6;rxq7@0000:00:04.7],dma-ring-size=1024' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,queues=8,dmas=[txq0@0000:80:04.0;txq1@0000:80:04.1;txq2@0000:80:04.2;txq3@0000:80:04.3;txq4@0000:80:04.4;txq5@0000:80:04.5;txq6@0000:80:04.6;txq7@0000:80:04.7;rxq0@0000:80:04.0;rxq1@0000:80:04.1;rxq2@0000:80:04.2;rxq3@0000:80:04.3;rxq4@0000:80:04.4;rxq5@0000:80:04.5;rxq6@0000:80:04.6;rxq7@0000:80:04.7],dma-ring-size=1024' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8
+	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04.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 \
@@ -316,7 +321,7 @@ The dynamic change of multi-queues number and the reconnection also test.
 
 	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04-2.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 \
@@ -351,21 +356,19 @@ The dynamic change of multi-queues number and the reconnection also test.
 
 	<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,tso=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \
-	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=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
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,tso=1,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.1;txq2@0000:00:04.2;txq3@0000:00:04.3;txq4@0000:00:04.4;txq5@0000:00:04.5]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,queues=8,dmas=[rxq2@0000:00:04.2;rxq30000:00:04.3;rxq4@0000:00:04.4;rxq5@0000:00:04.5;rxq6@0000:00:04.6;rxq7@0000:00:04.7]' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8
+	testpmd> start
 
-9. Rerun step 6-7.
+9. Rerun step 6-7 three times.
 
 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,tso=1,queues=8' --vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,queues=8' \
 	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8
-	testpmd>start
+	testpmd> start
 
 11. Scp 1MB file form VM1 to VM2::
 
@@ -381,7 +384,7 @@ The dynamic change of multi-queues number and the reconnection also test.
 	<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,tso=1,queues=8' --vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,queues=8' \
 	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=1 --rxq=1
-	testpmd>start
+	testpmd> start
 
 14. On VM1, set virtio device::
 
@@ -400,10 +403,11 @@ The dynamic change of multi-queues number and the reconnection also test.
 	Under VM1, run: `iperf -s -i 1`
 	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
 
-Test Case 4: VM2VM virtio-net split ring mergeable 16 queues CBDMA enable test with large packet payload valid check
---------------------------------------------------------------------------------------------------------------------
+Test Case 4: VM2VM virtio-net split ring mergeable 16 queues CBDMA enable test with Rx/Tx csum in SW
+----------------------------------------------------------------------------------------------------
 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 operations with CBDMA channels.
+vm2vm vhost-user/virtio-net split ring mergeable path and 16 queues when vhost uses the asynchronous operations with CBDMA channels
+and perform SW checksum in Rx/Tx path.
 
 1. Bind 16 CBDMA channels to vfio-pci, as common step 1.
 
@@ -412,17 +416,22 @@ vm2vm vhost-user/virtio-net split ring mergeable path and 16 queues when vhost u
 	<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,tso=1,queues=16,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;txq8;txq9;txq10;txq11;txq12;txq13;txq14;txq15;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7;rxq8;rxq9;rxq10;rxq11;rxq12;rxq13;rxq14;rxq15]' \
-	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,queues=16,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;txq8;txq9;txq10;txq11;txq12;txq13;txq14;txq15;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7;rxq8;rxq9;rxq10;rxq11;rxq12;rxq13;rxq14;rxq15]' \
-	--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
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,tso=1,queues=16,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.1;txq3@0000:00:04.1;txq4@0000:00:04.2;txq5@0000:00:04.2;txq6@0000:00:04.3;txq7@0000:00:04.3;txq8@0000:00:04.4;txq9@0000:00:04.4;txq10@0000:00:04.5;txq11@0000:00:04.5;txq12@0000:00:04.6;txq13@0000:00:04.6;txq14@0000:00:04.7;txq15@0000:00:04.7;rxq0@0000:80:04.0;rxq1@0000:80:04.0;rxq2@0000:80:04.1;rxq3@0000:80:04.1;rxq4@0000:80:04.2;rxq5@0000:80:04.2;rxq6@0000:80:04.3;rxq7@0000:80:04.3;rxq8@0000:80:04.4;rxq9@0000:80:04.4;rxq10@0000:80:04.5;rxq11@0000:80:04.5;rxq12@0000:80:04.6;rxq13@0000:80:04.6;rxq14@0000:80:04.7;rxq15@0000:80:04.7]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,tso=1,queues=16,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.1;txq2@0000:00:04.2;txq3@0000:00:04.3;txq4@0000:00:04.4;txq5@0000:00:04.5;txq6@0000:00:04.6;txq7@0000:00:04.7;txq8@0000:80:04.0;txq9@0000:80:04.1;txq10@0000:80:04.2;txq11@0000:80:04.3;txq12@0000:80:04.4;txq13@0000:80:04.5;txq14@0000:80:04.6;txq15@0000:80:04.7;rxq0@0000:00:04.0;rxq1@0000:00:04.1;rxq2@0000:00:04.2;rxq3@0000:00:04.3;rxq4@0000:00:04.4;rxq5@0000:00:04.5;rxq6@0000:00:04.6;rxq7@0000:00:04.7;rxq8@0000:80:04.0;rxq9@0000:80:04.1;rxq10@0000:80:04.2;rxq11@0000:80:04.3;rxq12@0000:80:04.4;rxq13@0000:80:04.5;rxq14@0000:80:04.6;rxq15@0000:80:04.7]' \
+	--iova=va -- -i --nb-cores=8 --txd=1024 --rxd=1024 --txq=16 --rxq=16
+	testpmd> set fwd csum
+	testpmd> stop
+	testpmd> port stop all
+	testpmd> port config 0 tx_offload tcp_cksum on
+	testpmd> port config 1 tx_offload tcp_cksum on
+	testpmd> port start all
+	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04.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 \
@@ -430,11 +439,11 @@ vm2vm vhost-user/virtio-net split ring mergeable path and 16 queues when vhost u
 	-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
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=off,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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04-2.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 \
@@ -442,7 +451,7 @@ vm2vm vhost-user/virtio-net split ring mergeable path and 16 queues when vhost u
 	-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
+	mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=off,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :12
 
 4. On VM1, set virtio device IP and run arp protocal::
 
@@ -474,18 +483,17 @@ by verifing the TSO/cksum in the TCP/IP stack when vhost uses the asynchronous o
 
 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,tso=1,dmas=[txq0;rxq0]' \
-	--vdev 'net_vhost1,iface=vhost-net1,queues=1,tso=1,dmas=[txq0;rxq0]' \
-	--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
+	<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,tso=1,dmas=[txq0@0000:00:04.0;rxq0@0000:00:04.0]' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=1,tso=1,dmas=[txq0@0000:00:04.1;rxq0@0000:00:04.1]' \
+	--iova=va -- -i --nb-cores=2 --txd=1024 --rxd=1024 --txq=1 --rxq=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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04.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 \
@@ -497,7 +505,7 @@ by verifing the TSO/cksum in the TCP/IP stack when vhost uses the asynchronous o
 
 	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04-2.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 \
@@ -524,7 +532,7 @@ by verifing the TSO/cksum in the TCP/IP stack when vhost uses the asynchronous o
 
 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
+	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
 --------------------------------------------------------------------------------------------------------------------
@@ -538,17 +546,16 @@ vm2vm vhost-user/virtio-net packed ring mergeable path and 8 queues when vhost u
 	<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,tso=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
-	--vdev 'net_vhost1,iface=vhost-net1,queues=8,tso=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
-	--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
+	--vdev 'net_vhost0,iface=vhost-net0,queues=8,tso=1,dmas=dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.1;txq3@0000:00:04.1;txq4@0000:00:04.2;txq5@0000:00:04.2;txq6@0000:00:04.3;txq7@0000:00:04.3;rxq0@0000:00:04.4;rxq1@0000:00:04.4;rxq2@0000:00:04.5;rxq3@0000:00:04.5;rxq4@0000:00:04.6;rxq5@0000:00:04.6;rxq6@0000:00:04.7;rxq7@0000:00:04.7]' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=8,tso=1,dmas=dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.1;txq3@0000:00:04.1;txq4@0000:00:04.2;txq5@0000:00:04.2;txq6@0000:00:04.3;txq7@0000:00:04.3;rxq0@0000:00:04.4;rxq1@0000:00:04.4;rxq2@0000:00:04.5;rxq3@0000:00:04.5;rxq4@0000:00:04.6;rxq5@0000:00:04.6;rxq6@0000:00:04.7;rxq7@0000:00:04.7]' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8
+	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04.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 \
@@ -560,7 +567,7 @@ vm2vm vhost-user/virtio-net packed ring mergeable path and 8 queues when vhost u
 
 	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04-2.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 \
@@ -605,17 +612,16 @@ vm2vm vhost-user/virtio-net packed ring non-mergeable path and 8 queues when vho
 	<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,tso=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
-	--vdev 'net_vhost1,iface=vhost-net1,queues=8,tso=1,dmas=[txq2;txq3;txq4;txq5;txq6;txq7;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5]' \
-	--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
+	--vdev 'net_vhost0,iface=vhost-net0,queues=8,tso=1,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.1;txq3@0000:00:04.1;txq4@0000:00:04.2;txq5@0000:00:04.2;rxq2@0000:00:04.3;rxq3@0000:00:04.3;rxq4@0000:00:04.4;rxq5@0000:00:04.4;rxq6@0000:00:04.5;rxq7@0000:00:04.5],dma-ring-size=1024' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=8,tso=1,dmas=[txq2@0000:80:04.0;txq3@0000:80:04.0;txq4@0000:80:04.1;txq5@0000:80:04.1;txq6@0000:80:04.2;txq7@0000:80:04.2;rxq0@0000:80:04.3;rxq1@0000:80:04.3;rxq2@0000:80:04.4;rxq3@0000:80:04.4;rxq4@0000:80:04.5;rxq5@0000:80:04.5],dma-ring-size=1024' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8
+	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04.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 \
@@ -627,7 +633,7 @@ vm2vm vhost-user/virtio-net packed ring non-mergeable path and 8 queues when vho
 
 	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04-2.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 \
@@ -660,10 +666,11 @@ vm2vm vhost-user/virtio-net packed ring non-mergeable path and 8 queues when vho
 
 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
-----------------------------------------------------------------------------------------------------------------------
+Test Case 8: VM2VM virtio-net packed ring mergeable 16 queues CBDMA enabled test with Rx/Tx csum in SW
+------------------------------------------------------------------------------------------------------
 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 operations with CBDMA channels.
+vm2vm vhost-user/virtio-net packed ring mergeable path and 16 queues when vhost uses the asynchronous operations with CBDMA channels
+and perform SW checksum in Rx/Tx path.
 
 1. Bind 16 CBDMA channels to vfio-pci, as common step 1.
 
@@ -672,17 +679,22 @@ vm2vm vhost-user/virtio-net packed ring mergeable path and 16 queues when vhost
 	<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,tso=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;txq8;txq9;txq10;txq11,txq12,txq13;txq14;txq15;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7;rxq8;rxq9;rxq10;rxq11;rxq12;rxq13;rxq14;rxq15]' \
-	--vdev 'net_vhost1,iface=vhost-net1,queues=16,tso=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;txq8;txq9;txq10;txq11,txq12,txq13;txq14;txq15;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7;rxq8;rxq9;rxq10;rxq11;rxq12;rxq13;rxq14;rxq15]' \
-	--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
+	--vdev 'net_vhost0,iface=vhost-net0,queues=16,tso=1,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.1;txq3@0000:00:04.1;txq4@0000:00:04.2;txq5@0000:00:04.2;txq6@0000:00:04.3;txq7@0000:00:04.3;txq8@0000:00:04.4;txq9@0000:00:04.4;txq10@0000:00:04.5;txq11@0000:00:04.5;txq12@0000:00:04.6;txq13@0000:00:04.6;txq14@0000:00:04.7;txq15@0000:00:04.7;rxq0@0000:80:04.0;rxq1@0000:80:04.0;rxq2@0000:80:04.1;rxq3@0000:80:04.1;rxq4@0000:80:04.2;rxq5@0000:80:04.2;rxq6@0000:80:04.3;rxq7@0000:80:04.3;rxq8@0000:80:04.4;rxq9@0000:80:04.4;rxq10@0000:80:04.5;rxq11@0000:80:04.5;rxq12@0000:80:04.6;rxq13@0000:80:04.6;rxq14@0000:80:04.7;rxq15@0000:80:04.7]' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=16,tso=1,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.1;txq2@0000:00:04.2;txq3@0000:00:04.3;txq4@0000:00:04.4;txq5@0000:00:04.5;txq6@0000:00:04.6;txq7@0000:00:04.7;txq8@0000:80:04.0;txq9@0000:80:04.1;txq10@0000:80:04.2;txq11@0000:80:04.3;txq12@0000:80:04.4;txq13@0000:80:04.5;txq14@0000:80:04.6;txq15@0000:80:04.7;rxq0@0000:00:04.0;rxq1@0000:00:04.1;rxq2@0000:00:04.2;rxq3@0000:00:04.3;rxq4@0000:00:04.4;rxq5@0000:00:04.5;rxq6@0000:00:04.6;rxq7@0000:00:04.7;rxq8@0000:80:04.0;rxq9@0000:80:04.1;rxq10@0000:80:04.2;rxq11@0000:80:04.3;rxq12@0000:80:04.4;rxq13@0000:80:04.5;rxq14@0000:80:04.6;rxq15@0000:80:04.7]' \
+	--iova=va -- -i --nb-cores=8 --txd=1024 --rxd=1024 --txq=16 --rxq=16
+	testpmd> set fwd csum
+	testpmd> stop
+	testpmd> port stop all
+	testpmd> port config 0 tx_offload tcp_cksum on
+	testpmd> port config 1 tx_offload tcp_cksum on
+	testpmd> port start all
+	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04.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 \
@@ -690,11 +702,11 @@ vm2vm vhost-user/virtio-net packed ring mergeable path and 16 queues when vhost
 	-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
+	mq=on,vectors=40,csum=on,guest_csum=off,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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04-2.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 \
@@ -702,7 +714,7 @@ vm2vm vhost-user/virtio-net packed ring mergeable path and 16 queues when vhost
 	-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
+	mq=on,vectors=40,csum=on,guest_csum=off,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::
 
@@ -727,11 +739,11 @@ vm2vm vhost-user/virtio-net packed ring mergeable path and 16 queues when vhost
 
 8. Rerun step 6-7 five times.
 
-Test Case 9: VM2VM virtio-net packed ring CBDMA enable test with tcp traffic when set iova=pa
----------------------------------------------------------------------------------------------
+Test Case 9: VM2VM virtio-net packed ring CBDMA enable test dma-ring-size 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
-and iova as PA mode.
+and the dma ring size is small.
 
 1. Bind 2 CBDMA channels to vfio-pci, as common step 1.
 
@@ -739,16 +751,16 @@ and iova as PA mode.
 
 	<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,tso=1,dmas=[txq0;rxq0]' \
-	--vdev 'net_vhost1,iface=vhost-net1,queues=1,tso=1,dmas=[txq0;rxq0]' \
-	--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
+	--vdev 'net_vhost0,iface=vhost-net0,queues=1,tso=1,dmas=[txq0@0000:00:04.0;rxq0@0000:00:04.0],dma-ring-size=256' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=1,tso=1,dmas=[txq0@0000:00:04.1;rxq0@0000:00:04.1],dma-ring-size=256' \
+	--iova=va -- -i --nb-cores=2 --txd=1024 --rxd=1024 --txq=1 --rxq=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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04.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 \
@@ -760,7 +772,7 @@ and iova as PA mode.
 
 	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04-2.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 \
@@ -789,15 +801,12 @@ and iova as PA mode.
 	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::
+8. Rerun step 6-7 three times.
 
-	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
----------------------------------------------------------------------------------------------------------------------------------
+Test Case 10: VM2VM virtio-net packed ring 8 queues CBDMA enable test with legacy mode
+--------------------------------------------------------------------------------------
 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 operations with CBDMA channels
-and iova as PA mode.
+vm2vm vhost-user/virtio-net packed ring mergeable path and 8 queues  with legacy mode when vhost uses the asynchronous operations with CBDMA channels.
 
 1. Bind 16 CBDMA channels to vfio-pci, as common step 1.
 
@@ -806,17 +815,16 @@ and iova as PA mode.
 	<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,tso=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
-	--vdev 'net_vhost1,iface=vhost-net1,queues=8,tso=1,dmas=[txq2;txq3;txq4;txq5;txq6;txq7;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5]' \
-	--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
+	--vdev 'net_vhost0,iface=vhost-net0,queues=8,tso=1,legacy-ol-flags=1,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.1;txq3@0000:00:04.1;txq4@0000:00:04.2;txq5@0000:00:04.2;rxq2@0000:00:04.3;rxq3@0000:00:04.3;rxq4@0000:00:04.4;rxq5@0000:00:04.4;rxq6@0000:00:04.5;rxq7@0000:00:04.5]' \
+	--vdev 'net_vhost1,iface=vhost-net1,queues=8,tso=1,legacy-ol-flags=1,dmas=[txq2@0000:80:04.0;txq3@0000:80:04.0;txq4@0000:80:04.1;txq5@0000:80:04.1;txq6@0000:80:04.2;txq7@0000:80:04.2;rxq0@0000:80:04.3;rxq1@0000:80:04.3;rxq2@0000:80:04.4;rxq3@0000:80:04.4;rxq4@0000:80:04.5;rxq5@0000:80:04.5]' \
+	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --txq=8 --rxq=8
+	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04.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 \
@@ -828,7 +836,7 @@ and iova as PA mode.
 
 	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  \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu22-04-2.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 \
@@ -859,4 +867,4 @@ and iova as PA mode.
 	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.
+8. Rerun step 6-7 three times.
