diff --git a/test_plans/vm2vm_virtio_pmd_dsa_test_plan.rst b/test_plans/vm2vm_virtio_pmd_dsa_test_plan.rst
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+.. SPDX-License-Identifier: BSD-3-Clause
+   Copyright(c) 2022 Intel Corporation
+
+=======================================================
+vm2vm vhost-user/virtio-pmd with dsa driver test plan
+=======================================================
+
+This document provides the test plan for testing some basic functions with DSA driver(kernel IDXD driver and DPDK vfio-pci driver) 
+in vm2vm vhost-user/virtio-pmd topology environment.
+1. vm2vm mergeable, non-mergebale path test with virtio 1.0 and virtio1.1 and check virtio-pmd tx chain packets in mergeable path.
+2. dynamic change queue number.
+
+..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.
+
+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-pmd-->Vhost-user-->Testpmd-->Vhost-user-->Virtio-pmd
+
+Software
+--------
+	iperf
+
+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
+
+2. Get the DMA device ID of DUT, for example, 0000:6a:01.0 is DMA device ID::
+
+	<dpdk dir># ./usertools/dpdk-devbind.py -s
+
+	DMA devices using kernel driver
+	===============================
+	0000:6a:01.0 'Device 0b25' drv=idxd unused=vfio-pci
+	0000:6f:01.0 'Device 0b25' drv=idxd unused=vfio-pci
+	0000:74:01.0 'Device 0b25' drv=idxd unused=vfio-pci
+	0000:79:01.0 'Device 0b25' drv=idxd unused=vfio-pci
+	0000:e7:01.0 'Device 0b25' drv=idxd unused=vfio-pci
+	0000:ec:01.0 'Device 0b25' drv=idxd unused=vfio-pci
+	0000:f1:01.0 'Device 0b25' drv=idxd unused=vfio-pci
+	0000:f6:01.0 'Device 0b25' drv=idxd unused=vfio-pci
+
+Test case
+=========
+
+Common steps
+------------
+1.Bind DSA devices to DPDK vfio-pci driver::
+
+	<dpdk dir># ./usertools/dpdk-devbind.py -b vfio-pci <DUT port DSA device id>
+	For example, bind 2 DMA devices to vfio-pci driver:
+	<dpdk dir># ./usertools/dpdk-devbind.py -b vfio-pci 0000:e7:01.0 0000:ec:01.0
+
+.. note::
+
+	One DPDK DSA device can create 8 WQ at most. Below is an example, where DPDK DSA device will create one and
+	eight WQ for DSA deivce 0000:e7:01.0 and 0000:ec:01.0. The value of “max_queues” is 1~8:
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 4 -n 4 -a 0000:e7:01.0,max_queues=1 -- -i
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 4 -n 4 -a 0000:ec:01.0,max_queues=8 -- -i
+
+2. Bind DSA devices to kernel idxd driver, and configure Work Queue (WQ)::
+
+	<dpdk dir># ./usertools/dpdk-devbind.py -b idxd <numDevices * 2>
+	<dpdk dir># ./drivers/dma/dma/idxd/dpdk_idxd_cfg.py -q <numWq>
+
+.. note::
+
+	Better to reset WQ when need operate DSA devices that bound to idxd drvier:
+	<dpdk dir># ./drivers/dma/idxd/dpdk_idxd_cfg.py --reset <numDevices>
+	You can check it by 'ls /dev/dsa'
+	numDevices: number of devices, where 0<=numDevices<=7, corresponding to 0000:6a:01.0 - 0000:f6:01.0
+	numWq: Number of workqueues per DSA endpoint, where 1<=numWq<=8
+
+	For example, bind 2 DMA devices to idxd driver and configure WQ:
+
+	<dpdk dir># ./usertools/dpdk-devbind.py -b idxd 6a:01.0 6f:01.0
+	<dpdk dir># ./drivers/dma/idxd/dpdk_idxd_cfg.py -q 1 0
+	<dpdk dir># ./drivers/dma/idxd/dpdk_idxd_cfg.py -q 4 1
+	Check WQ by 'ls /dev/dsa' and can find "wq0.0 wq1.0 wq1.1 wq1.2 wq1.3"
+
+Test Case 1: VM2VM virtio-pmd split ring mergeable path dynamic queue size with dsa dpdk driver and server mode
+-----------------------------------------------------------------------------------------------------------------
+This case tests split ring mergeable path in VM2VM vhost-user/virtio-pmd topology when vhost uses the asynchronous operations with dsa dpdk driver, 
+check that it can tx chain packets normally after dynamically changing queue number from vhost, reconnection has also been tested.
+
+1. Bind 2 dsa device to vfio-pci, then launch the testpmd with 2 vhost ports below commands::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost -a 0000:f1:01.0,max_queues=4 -a 0000:f6:01.0,max_queues=4 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;rxq0;rxq1;rxq2;rxq3]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;rxq0;rxq1;rxq2;rxq3]' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=4 --txq=4 \
+	--lcore-dma=[lcore2@0000:f1:01.0-q0,lcore2@0000:f1:01.0-q1,lcore3@0000:f1:01.0-q2,lcore3@0000:f1:01.0-q3,lcore4@0000:f6:01.0-q0,lcore4@0000:f6:01.0-q1,lcore5@0000:f6:01.0-q2,lcore5@0000:f6:01.0-q3]
+	testpmd>start
+
+2. Launch VM1 and VM2 using qemu::
+
+	taskset -c 6-16 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -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/xingguang/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,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 17-27 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/xingguang/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
+
+3. On VM1 and VM2, bind virtio device with vfio-pci driver::
+
+	modprobe vfio
+	modprobe vfio-pci
+	echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+	./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+4. Launch testpmd in VM1::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
+	testpmd>set fwd mac
+	testpmd>start
+
+5. Launch testpmd in VM2 and send imix pkts, check imix packets can looped between two VMs for 1 mins and 4 queues (queue0 to queue3) have packets rx/tx::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
+	testpmd>set fwd mac
+	testpmd>set txpkts 64,256,512,1024,2000,64,256,512,1024,2000
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+6. Check vhost use the asynchronous data path(funtion like virtio_dev_rx_async_xxx/virtio_dev_tx_async_xxx)::
+
+	perf top
+
+7. Stop vhost, check that both 4 queues can rx/tx queues::
+
+	testpmd>stop
+
+8. On host, dynamic change queue numbers::
+
+	testpmd>stop
+	testpmd>port stop all
+	testpmd>port config all rxq 8
+	testpmd>port config all txq 8
+	testpmd>port start all
+	testpmd>start
+
+9. Send packets by testpmd in VM2::
+
+	testpmd>stop
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+10. Check vhost testpmd RX/TX can work normally, packets can looped between two VMs and both 8 queues can RX/TX traffic. 
+
+11. Rerun step 6.
+
+12. Relaunch and start vhost side testpmd with 8 queues::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost -a 0000:f1:01.0,max_queues=8 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8 \
+	--lcore-dma=[lcore2@0000:f1:01.0-q0,lcore2@0000:f1:01.0-q1,lcore3@0000:f1:01.0-q2,lcore3@0000:f1:01.0-q3,lcore4@0000:f1:01.0-q4,lcore4@0000:f1:01.0-q5,lcore5@0000:f1:01.0-q6,lcore5@0000:f1:01.0-q7]
+	testpmd>start
+
+13. Send packets by testpmd in VM2, check imix packets can looped between two VMs for 1 mins and 8 queues all have packets rx/tx::
+
+	testpmd>stop
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+	testpmd>stop
+
+14. Rerun step 12-13 for 3 times.
+
+Test Case 2: VM2VM virtio-pmd split ring non-mergeable path dynamic queue size with dsa dpdk driver and server mode
+----------------------------------------------------------------------------------------------------------------------
+This case tests split ring non-mergeable path in VM2VM vhost-user/virtio-pmd topology when vhost uses the asynchronous operations with dsa dpdk driver, 
+check that it can work normally after dynamically changing queue number at virtio-pmd side, reconnection has also been tested.
+
+1. Bind 2 dsa device to vfio-pci, then launch the testpmd with 2 vhost ports below commands::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost -a 0000:f1:01.0,max_queues=4 -a 0000:f6:01.0,max_queues=4 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;rxq0;rxq1;rxq2;rxq3]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;rxq0;rxq1;rxq2;rxq3]' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8 \
+	--lcore-dma=[lcore2@0000:f1:01.0-q0,lcore2@0000:f1:01.0-q1,lcore3@0000:f1:01.0-q2,lcore3@0000:f1:01.0-q3,lcore4@0000:f6:01.0-q0,lcore4@0000:f6:01.0-q1,lcore5@0000:f6:01.0-q2,lcore5@0000:f6:01.0-q3]
+	testpmd>start
+
+2. Launch VM1 and VM2 using qemu::
+
+	taskset -c 6-16 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -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/xingguang/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,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 17-27 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/xingguang/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
+
+3. On VM1 and VM2, bind virtio device with vfio-pci driver::
+
+	modprobe vfio
+	modprobe vfio-pci
+	echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+	./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+4. Launch testpmd in VM1::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024	
+	testpmd>set fwd mac
+	testpmd>start
+
+5. Launch testpmd in VM2 and send imix pkts, check imix packets can looped between two VMs for 1 mins and 4 queues (queue0 to queue3) have packets rx/tx::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024	
+	testpmd>set fwd mac
+	testpmd>set txpkts 64,256,512
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+6. Check vhost use the asynchronous data path(funtion like virtio_dev_rx_async_xxx/virtio_dev_tx_async_xxx)::
+
+	perf top
+
+7. Stop vhost, check that both 8 queues can rx/tx queues, then start the vhost.
+
+	testpmd>stop
+	testpmd>start
+
+8. On VM2, dynamic change queue numbers at virtio-pmd side from 8 queues to 4 queues::
+
+	testpmd>stop
+	testpmd>port stop all
+	testpmd>port config all rxq 4
+	testpmd>port config all txq 4
+	testpmd>port start all
+	testpmd>start
+
+9. Send packets by testpmd in VM2, check Check virtio-pmd RX/TX can work normally and imix packets can looped between two VMs for 1 mins::
+
+	testpmd>stop
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+10. Rerun step 6.
+
+11. Stop testpmd in VM2, and check that 4 queues can RX/TX traffic.
+
+Test Case 3: VM2VM virtio-pmd packed ring mergeable path dynamic queue size with dsa dpdk driver and server mode
+-----------------------------------------------------------------------------------------------------------------
+This case tests packed ring mergeable path in VM2VM vhost-user/virtio-pmd topology when vhost uses the asynchronous operations with dsa dpdk driver,
+check that it can tx chain packets normally after dynamically changing queue number.
+
+1. Bind 2 dsa device to vfio-pci, then launch the testpmd with 2 vhost ports below commands::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost -a 0000:f1:01.0,max_queues=4 -a 0000:f6:01.0,max_queues=4 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;rxq0;rxq1;rxq2;rxq3]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;rxq0;rxq1;rxq2;rxq3]' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=4 --txq=4 \
+	--lcore-dma=[lcore2@0000:f1:01.0-q0,lcore2@0000:f1:01.0-q1,lcore3@0000:f1:01.0-q2,lcore3@0000:f1:01.0-q3,lcore4@0000:f6:01.0-q0,lcore4@0000:f6:01.0-q1,lcore5@0000:f6:01.0-q2,lcore5@0000:f6:01.0-q3]
+	testpmd>start
+
+2. Launch VM1 and VM2 using qemu::
+
+	taskset -c 6-16 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -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/xingguang/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,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,packed=on -vnc :10
+
+	taskset -c 17-27 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/xingguang/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,packed=on -vnc :12
+
+3. On VM1 and VM2, bind virtio device with vfio-pci driver::
+
+	modprobe vfio
+	modprobe vfio-pci
+	echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+	./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+4. Launch testpmd in VM1::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
+	testpmd>set fwd mac
+	testpmd>start
+
+5. Launch testpmd in VM2 and send imix pkts, check imix packets can looped between two VMs for 1 mins and 4 queues (queue0 to queue3) have packets rx/tx::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
+	testpmd>set fwd mac
+	testpmd>set txpkts 64,256,512,1024,2000,64,256,512,1024,2000
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+	testpmd>stop
+
+6. Quit VM2 and relaunch VM2 with split ring::
+
+	taskset -c 17-27 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/xingguang/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
+
+7. Bind virtio device with vfio-pci driver::
+
+	modprobe vfio
+	modprobe vfio-pci
+	echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+	./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+8. Launch testpmd in VM2 and send imix pkts from VM2::
+
+	<dpdk dir># ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
+	testpmd>set fwd mac
+	testpmd>set txpkts 64,256,512,1024,2000,64,256,512,1024,2000
+	testpmd>start tx_first 32
+   
+9. On host, Check imix packets can looped between two VMs and 4 queues all have packets rx/tx::
+
+	testpmd>show port stats all
+	testpmd>stop
+	testpmd>start
+
+10. Check vhost use the asynchronous data path(funtion like virtio_dev_rx_async_xxx/virtio_dev_tx_async_xxx)::
+
+	perf top
+
+11. On host, dynamic change queue numbers::
+
+	testpmd>stop
+	testpmd>port stop all
+	testpmd>port config all rxq 8
+	testpmd>port config all txq 8
+	testpmd>port start all
+	testpmd>start
+
+12. Send packets by testpmd in VM2::
+
+	testpmd>stop
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+13. Check vhost testpmd RX/TX can work normally, packets can looped between two VMs and both 8 queues can RX/TX traffic.
+
+14. Rerun step 10.
+
+Test Case 4: VM2VM virtio-pmd packed ring non-mergeable path dynamic queue size with dsa dpdk driver and server mode
+-----------------------------------------------------------------------------------------------------------------------
+This case tests packed ring non-mergeable path in VM2VM vhost-user/virtio-pmd topology when vhost uses the asynchronous operations with dsa dpdk driver, 
+check that it can work normally after dynamically changing queue number at virtio-pmd side.
+
+1. Bind 2 dsa device to vfio-pci, then launch the testpmd with 2 vhost ports below commands::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost -a 0000:f1:01.0,max_queues=4 -a 0000:f6:01.0,max_queues=4 \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4]' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8 \
+	--lcore-dma=[lcore2@0000:f1:01.0-q0,lcore2@0000:f1:01.0-q1,lcore3@0000:f1:01.0-q2,lcore3@0000:f1:01.0-q3,lcore4@0000:f6:01.0-q0,lcore4@0000:f6:01.0-q1,lcore5@0000:f6:01.0-q2,lcore5@0000:f6:01.0-q3]
+	testpmd>start
+
+2. Launch VM1 and VM2 using qemu::
+
+	taskset -c 6-16 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -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/xingguang/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,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,packed=on -vnc :10
+
+	taskset -c 17-27 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/xingguang/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,packed=on -vnc :12
+
+3. On VM1 and VM2, bind virtio device with vfio-pci driver::
+
+	modprobe vfio
+	modprobe vfio-pci
+	echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+	./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+4. Launch testpmd in VM1::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024	
+	testpmd>set fwd mac
+	testpmd>start
+
+5. Launch testpmd in VM2 and send imix pkts, check imix packets can looped between two VMs for 1 mins::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024	
+	testpmd>set fwd mac
+	testpmd>set txpkts 64,256,512
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+6. Check vhost use the asynchronous data path(funtion like virtio_dev_rx_async_xxx/virtio_dev_tx_async_xxx)::
+
+	perf top
+
+7. On VM2, stop the testpmd, check that both 8 queues have packets rx/tx::
+
+	testpmd>stop
+
+8. On VM2, dynamic change queue numbers at virtio-pmd side from 8 queues to 4 queues::
+
+	testpmd>stop
+	testpmd>port stop all
+	testpmd>port config all rxq 4
+	testpmd>port config all txq 4
+	testpmd>port start all
+	testpmd>start
+
+9. Send packets by testpmd in VM2, check Check virtio-pmd RX/TX can work normally and imix packets can looped between two VMs for 1 mins::
+
+	testpmd>stop
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+10. Rerun step 6.
+
+11. Stop testpmd in VM2, and check that 4 queues can RX/TX traffic.
+
+Test Case 5: VM2VM virtio-pmd split ring mergeable path dynamic queue size with dsa kernel driver and server mode
+-------------------------------------------------------------------------------------------------------------------
+This case tests split ring mergeable path in VM2VM vhost-user/virtio-pmd topology when vhost uses the asynchronous operations with dsa kernel driver, 
+check that it can tx chain packets normally after dynamically changing queue number at vhost side, reconnection has also been tested.
+
+1. Bind 2 dsa device to idxd::
+
+	ls /dev/dsa #check wq configure, reset if exist
+	./usertools/dpdk-devbind.py -u 6a:01.0 6f:01.0
+	./usertools/dpdk-devbind.py -b idxd 6a:01.0 6f:01.0
+	./drivers/raw/ioat/dpdk_idxd_cfg.py -q 8 0
+	./drivers/raw/ioat/dpdk_idxd_cfg.py -q 8 1
+	ls /dev/dsa #check wq configure success
+
+2. Launch the testpmd with 2 vhost ports below commands::
+
+	./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,dmas=[txq0;txq1;txq2;txq3;rxq0;rxq1;rxq2;rxq3]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;rxq0;rxq1;rxq2;rxq3]' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=4 --txq=4 \
+	--lcore-dma=[lcore2@wq0.0,lcore2@wq0.1,lcore3@wq0.2,lcore3@wq0.3,lcore4@wq0.4,lcore4@wq0.5,lcore5@wq0.6,lcore5@wq0.7]
+	testpmd>start
+
+3. Launch VM1 and VM2 using qemu::
+
+	taskset -c 6-16 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -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/xingguang/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,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 17-27 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/xingguang/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 and VM2, bind virtio device with vfio-pci driver::
+
+	modprobe vfio
+	modprobe vfio-pci
+	echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+	./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+5. Launch testpmd in VM1::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
+	testpmd>set fwd mac
+	testpmd>start
+
+6. Launch testpmd in VM2 and send imix pkts, check imix packets can looped between two VMs for 1 mins and 4 queues (queue0 to queue3) have packets rx/tx::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
+	testpmd>set fwd mac
+	testpmd>set txpkts 64,256,512,1024,2000,64,256,512,1024,2000
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+7. Check vhost use the asynchronous data path(funtion like virtio_dev_rx_async_xxx/virtio_dev_tx_async_xxx)::
+
+	perf top
+
+8. Stop vhost, check that both 4 queues can rx/tx queues.	
+
+9. On host, dynamic change queue numbers::
+
+	testpmd>stop
+	testpmd>port stop all
+	testpmd>port config all rxq 8
+	testpmd>port config all txq 8
+	testpmd>port start all
+	testpmd>start
+
+10. Send packets by testpmd in VM2::
+
+	testpmd>stop
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+11. Check vhost testpmd RX/TX can work normally, packets can looped between two VMs and both 8 queues can RX/TX traffic.
+
+12. Rerun step 7.
+
+13. Relaunch and start vhost side testpmd with 8 queues::
+
+	./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,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8 \
+	--lcore-dma=[lcore2@wq0.0,lcore2@wq0.1,lcore3@wq0.2,lcore3@wq0.3,lcore4@wq1.0,lcore4@wq1.1,lcore5@wq1.2,lcore5@wq1.3]
+	testpmd>start
+
+14. Send packets by testpmd in VM2, check imix packets can looped between two VMs for 1 mins and 8 queues all have packets rx/tx::
+
+	testpmd>stop
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+	testpmd>stop
+
+15. Rerun step 13-14 for 3 times.
+
+Test Case 6: VM2VM virtio-pmd split ring non-mergeable path dynamic queue size with dsa kernel driver and server mode
+-----------------------------------------------------------------------------------------------------------------------
+This case tests split ring non-mergeable path in VM2VM vhost-user/virtio-pmd topology when vhost uses the asynchronous operations with dsa kernel driver, 
+check that it can work normally after dynamically changing queue number at virtio-pmd side, reconnection has also been tested.
+
+1. Bind 2 dsa device to idxd::
+
+	ls /dev/dsa #check wq configure, reset if exist
+	./usertools/dpdk-devbind.py -u 6a:01.0 6f:01.0
+	./usertools/dpdk-devbind.py -b idxd 6a:01.0 6f:01.0
+	./drivers/raw/ioat/dpdk_idxd_cfg.py -q 8 0
+	./drivers/raw/ioat/dpdk_idxd_cfg.py -q 8 1
+	ls /dev/dsa #check wq configure success
+
+2. Launch the testpmd with 2 vhost ports below commands::
+
+	./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,dmas=[txq0;txq1;txq2;txq3;rxq0;rxq1;rxq2;rxq3]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;rxq0;rxq1;rxq2;rxq3]' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8 \
+	--lcore-dma=[lcore2@wq0.0,lcore2@wq0.1,lcore3@wq0.2,lcore3@wq0.3,lcore4@wq0.4,lcore4@wq0.5,lcore5@wq0.6,lcore5@wq0.7]
+	testpmd>start
+
+3. Launch VM1 and VM2 using qemu::
+
+	taskset -c 6-16 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -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/xingguang/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,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 17-27 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/xingguang/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 and VM2, bind virtio device with vfio-pci driver::
+
+	modprobe vfio
+	modprobe vfio-pci
+	echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+	./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+5. Launch testpmd in VM1::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024	
+	testpmd>set fwd mac
+	testpmd>start
+
+6. Launch testpmd in VM2 and send imix pkts, check imix packets can looped between two VMs for 1 mins and 4 queues (queue0 to queue3) have packets rx/tx::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024	
+	testpmd>set fwd mac
+	testpmd>set txpkts 64,256,512
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+7. Check vhost use the asynchronous data path(funtion like virtio_dev_rx_async_xxx/virtio_dev_tx_async_xxx)::
+
+	perf top
+
+8. Stop testpmd in host, and check that 8 queues can RX/TX traffic.
+
+8. On VM, dynamic change queue numbers at virtio-pmd side from 8 queues to 4 queues::
+
+	testpmd>stop
+	testpmd>port stop all
+	testpmd>port config all rxq 4
+	testpmd>port config all txq 4
+	testpmd>port start all
+	testpmd>start
+
+9. Send packets by testpmd in VM2, check Check virtio-pmd RX/TX can work normally and imix packets can looped between two VMs for 1 mins::
+
+	testpmd>stop
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+10. Rerun step 7.
+
+11. Stop testpmd in host, and check that 4 queues can RX/TX traffic.
+
+Test Case 7: VM2VM virtio-pmd packed ring mergeable path dynamic queue size with dsa kernel driver and server mode
+-------------------------------------------------------------------------------------------------------------------
+This case tests packed ring mergeable path in VM2VM vhost-user/virtio-pmd topology when vhost uses the asynchronous operations with dsa kernel driver, 
+check that it can tx chain packets normally after dynamically changing queue number.
+
+1. Bind 1 dsa device to idxd::
+
+	ls /dev/dsa #check wq configure, reset if exist
+	./usertools/dpdk-devbind.py -u 6a:01.0
+	./usertools/dpdk-devbind.py -b idxd 6a:01.0
+	./drivers/raw/ioat/dpdk_idxd_cfg.py -q 8 0
+	ls /dev/dsa #check wq configure success
+
+2. Launch the testpmd with 2 vhost ports below commands::
+
+	./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,dmas=[txq0;txq1;txq2;txq3]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3]' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=4 --txq=4 \
+	--lcore-dma=[lcore2@wq0.0,lcore2@wq0.1,lcore3@wq0.2,lcore3@wq0.3,lcore4@wq0.4,lcore4@wq0.5,lcore5@wq0.6,lcore5@wq0.7]
+	testpmd>start
+
+3. Launch VM1 and VM2 using qemu::
+
+	taskset -c 6-16 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -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/xingguang/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,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,packed=on -vnc :10
+
+	taskset -c 17-27 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/xingguang/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,packed=on -vnc :12
+
+4. On VM1 and VM2, bind virtio device with vfio-pci driver::
+
+	modprobe vfio
+	modprobe vfio-pci
+	echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+	./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+5. Launch testpmd in VM1::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
+	testpmd>set fwd mac
+	testpmd>start
+
+6. Launch testpmd in VM2 and send imix pkts, check imix packets can looped between two VMs for 1 mins and 4 queues (queue0 to queue3) have packets rx/tx::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024 --max-pkt-len=9600 --rx-offloads=0x00002000
+	testpmd>set fwd mac
+	testpmd>set txpkts 64,256,512,1024,2000,64,256,512,1024,2000
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+	testpmd>stop
+
+7. Quit VM2 and relaunch VM2 with split ring::
+
+	taskset -c 17-27 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/xingguang/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
+
+8. Bind virtio device with vfio-pci driver::
+
+	modprobe vfio
+	modprobe vfio-pci
+	echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+	./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+9. Launch testpmd in VM2 and send imix pkts from VM2::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024
+	testpmd>set fwd mac
+	testpmd>set txpkts 64,256,512
+	testpmd>start tx_first 32
+
+10. Check vhost use the asynchronous data path(funtion like virtio_dev_rx_async_xxx/virtio_dev_tx_async_xxx)::
+
+	perf top
+
+11. On host, check imix packets can looped between two VMs and 4 queues all have packets rx/tx::
+
+	testpmd>show port stats all
+	testpmd>stop
+
+12. On host, dynamic change queue numbers::
+
+	testpmd>stop
+	testpmd>port stop all
+	testpmd>port config all rxq 8
+	testpmd>port config all txq 8
+	testpmd>port start all
+	testpmd>start
+
+13. Send packets by testpmd in VM2::
+
+	testpmd>stop
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+14. Check vhost testpmd RX/TX can work normally, packets can looped between two VMs and both 8 queues can RX/TX traffic.
+
+15. Rerun step 10.
+
+Test Case 8: VM2VM virtio-pmd packed ring non-mergeable path dynamic queue size with dsa kernel driver and server mode
+------------------------------------------------------------------------------------------------------------------------
+This case tests packed ring non-mergeable path in VM2VM vhost-user/virtio-pmd topology when vhost uses the asynchronous operations with dsa kernel driver, 
+check that it can work normally after dynamically changing queue number at virtio-pmd side.
+
+1. Bind 2 dsa device to idxd::
+
+	ls /dev/dsa #check wq configure, reset if exist
+	./usertools/dpdk-devbind.py -u 6a:01.0 6f:01.0
+	./usertools/dpdk-devbind.py -b idxd 6a:01.0 6f:01.0
+	./drivers/raw/ioat/dpdk_idxd_cfg.py -q 8 0
+	./drivers/raw/ioat/dpdk_idxd_cfg.py -q 8 1
+	ls /dev/dsa #check wq configure success
+
+1. Launch the testpmd with 2 vhost ports below commands::
+
+	./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,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
+	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8 \
+	--lcore-dma=[lcore2@wq0.0,lcore2@wq0.1,lcore3@wq0.2,lcore3@wq0.3,lcore4@wq1.0,lcore4@wq1.1,lcore5@wq1.2,lcore5@wq1.3]
+	testpmd>start
+
+2. Launch VM1 and VM2 using qemu::
+
+	taskset -c 6-16 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -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/xingguang/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,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,packed=on -vnc :10
+
+	taskset -c 17-27 /usr/local/qemu-7.0.0/bin/qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -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/xingguang/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,packed=on -vnc :12
+
+3. On VM1 and VM2, bind virtio device with vfio-pci driver::
+
+	modprobe vfio
+	modprobe vfio-pci
+	echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
+	./usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:00:05.0
+
+4. Launch testpmd in VM1::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024	
+	testpmd>set fwd mac
+	testpmd>start
+
+5. Launch testpmd in VM2 and send imix pkts, check imix packets can looped between two VMs for 1 mins::
+
+	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txq=8 --rxq=8 --txd=1024 --rxd=1024	
+	testpmd>set fwd mac
+	testpmd>set txpkts 64,256,512
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+6. Check vhost use the asynchronous data path(funtion like virtio_dev_rx_async_xxx/virtio_dev_tx_async_xxx)::
+
+	perf top
+
+7. On VM2, stop the testpmd, check that both 8 queues have packets rx/tx::
+
+	testpmd>stop
+
+8. On VM2, dynamic change queue numbers at virtio-pmd side from 8 queues to 4 queues::
+
+	testpmd>stop
+	testpmd>port stop all
+	testpmd>port config all rxq 4
+	testpmd>port config all txq 4
+	testpmd>port start all
+	testpmd>start
+
+9. Send packets by testpmd in VM2, check Check virtio-pmd RX/TX can work normally and imix packets can looped between two VMs for 1 mins::
+
+	testpmd>stop
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+10. Rerun step 6.
+
+11. Stop testpmd in VM2, and check that 4 queues can RX/TX traffic.
+
+12. On VM2, dynamic change queue numbers at virtio-pmd side from 4 queues to 8 queues::
+
+	testpmd>stop
+	testpmd>port stop all
+	testpmd>port config all rxq 8
+	testpmd>port config all txq 8
+	testpmd>port start all
+	testpmd>start
+	
+13. Send packets by testpmd in VM2, check Check virtio-pmd RX/TX can work normally and imix packets can looped between two VMs for 1 mins::
+
+	testpmd>stop
+	testpmd>start tx_first 32
+	testpmd>show port stats all
+
+14. Rerun step 6.
+
+15. Stop testpmd in VM2, and check that 8 queues can RX/TX traffic.	
