diff --git a/test_plans/basic_4k_pages_cbdma_test_plan.rst b/test_plans/basic_4k_pages_cbdma_test_plan.rst
index 009a200c..f70bac22 100644
--- a/test_plans/basic_4k_pages_cbdma_test_plan.rst
+++ b/test_plans/basic_4k_pages_cbdma_test_plan.rst
@@ -24,7 +24,7 @@ Note:
 
 1. When CBDMA channels 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.
-2. DPDK local patch that about vhost pmd is needed when testing Vhost asynchronous data path with testpmd. And case 4-5 have not yet been automated.
+2. 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
@@ -46,9 +46,9 @@ General set up
 
 	# 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
+    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
 
 3. 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::
 
@@ -65,10 +65,10 @@ General set up
 
 4. Prepare tmpfs with 4K-pages::
 
-	mkdir /mnt/tmpfs_nohuge0
-	mkdir /mnt/tmpfs_nohuge1
-	mount tmpfs /mnt/tmpfs_nohuge0 -t tmpfs -o size=4G
-	mount tmpfs /mnt/tmpfs_nohuge1 -t tmpfs -o size=4G
+    mkdir /mnt/tmpfs_nohuge0
+    mkdir /mnt/tmpfs_nohuge1
+    mount tmpfs /mnt/tmpfs_nohuge0 -t tmpfs -o size=4G
+    mount tmpfs /mnt/tmpfs_nohuge1 -t tmpfs -o size=4G
 
 Test case
 =========
@@ -85,234 +85,239 @@ Common steps
 
 Test Case 1: Basic test vhost-user/virtio-user split ring vhost async operation using 4K-pages and cbdma enable
 ---------------------------------------------------------------------------------------------------------------
-This case tests basic functions of split ring virtio path when uses the asynchronous operations with CBDMA channels in 4K-pages memory environment and PVP vhost-user/virtio-user topology.
+This case tests basic functions of split ring virtio path when uses the asynchronous operations with CBDMA channels
+in 4K-pages memory environment and PVP vhost-user/virtio-user topology.
 
-1. Bind one port to vfio-pci, launch vhost::
+1. Bind 1 CBDMA port and 1 NIC port to vfio-pci, launch vhost::
 
-	./usertools/dpdk-devbind.py --bind=vfio-pci xx:xx.x
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 3-4 -n 4 -m 1024 --no-huge --file-prefix=vhost -a 0000:18:00.0 -a 0000:00:04.0 \
-	--vdev 'net_vhost0,iface=/tmp/vhost-net,queues=1,dmas=[txq0;rxq0]' -- -i --no-numa --socket-num=0 --lcore-dma=[lcore4@0000:00:04.0]
-	testpmd>start
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 3-4 -n 4 -m 1024 --no-huge --file-prefix=vhost \
+    -a 0000:18:00.0 -a 0000:00:04.0 \
+    --vdev 'net_vhost0,iface=/tmp/vhost-net,queues=1,dmas=[txq0@0000:00:04.0;rxq0@0000:00:04.0]' \
+    -- -i --no-numa --socket-num=0
+    testpmd>start
 
 2. Launch virtio-user with 4K-pages::
 
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 5-6 -n 4 --no-huge -m 1024 --file-prefix=virtio-user \
-	--vdev=net_virtio_user0,mac=00:01:02:03:04:05,path=/tmp/vhost-net,queues=1 -- -i
-	testpmd>start
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 5-6 -n 4 --no-huge -m 1024 --file-prefix=virtio-user \
+    --vdev=net_virtio_user0,mac=00:01:02:03:04:05,path=/tmp/vhost-net,queues=1 \
+    -- -i
+    testpmd>start
 
 3. Send packet with packet generator with different packet size,includes [64, 128, 256, 512, 1024, 1518], check the throughput with below command::
 
-	testpmd>show port stats all
+    testpmd>show port stats all
 
 Test Case 2: Basic test vhost-user/virtio-user packed ring vhost async operation using 4K-pages and cbdma enable
 ----------------------------------------------------------------------------------------------------------------
-This case tests basic functions of packed ring virtio path when uses the asynchronous operations with CBDMA channels in 4K-pages memory environment and PVP vhost-user/virtio-user topology.
+This case tests basic functions of packed ring virtio path when uses the asynchronous operations with CBDMA channels
+in 4K-pages memory environment and PVP vhost-user/virtio-user topology.
 
-1. Bind one port to vfio-pci, launch vhost::
+1. Bind 1 CBDMA port and 1 NIC port to vfio-pci, launch vhost::
 
-	modprobe vfio-pci
-	./usertools/dpdk-devbind.py --bind=vfio-pci xx:xx.x
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 3-4 -n 4 -m 1024 --no-huge --file-prefix=vhost -a 0000:18:00.0 -a 0000:00:04.0 \
-	--vdev 'net_vhost0,iface=/tmp/vhost-net,queues=1,dmas=[txq0;rxq0]' -- -i --no-numa --socket-num=0 --lcore-dma=[lcore4@0000:00:04.0]
-	testpmd>start
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 3-4 -n 4 -m 1024 --no-huge --file-prefix=vhost \
+    -a 0000:18:00.0 -a 0000:00:04.0 \
+    --vdev 'net_vhost0,iface=/tmp/vhost-net,queues=1,dmas=[txq0@0000:00:04.0;rxq0@0000:00:04.0]' \
+    -- -i --no-numa --socket-num=0
+    testpmd>start
 
 2. Launch virtio-user with 4K-pages::
 
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 5-6 -n 4 --no-huge -m 1024 --file-prefix=virtio-user \
-	--vdev=net_virtio_user0,mac=00:01:02:03:04:05,path=/tmp/vhost-net,packed_vq=1,queues=1 -- -i
-	testpmd>start
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 5-6 -n 4 --no-huge -m 1024 --file-prefix=virtio-user \
+    --vdev=net_virtio_user0,mac=00:01:02:03:04:05,path=/tmp/vhost-net,packed_vq=1,queues=1 \
+    -- -i
+    testpmd>start
 
 3. Send packet with packet generator with different packet size,includes [64, 128, 256, 512, 1024, 1518], check the throughput with below command::
 
-	testpmd>show port stats all
+    testpmd>show port stats all
 
 Test Case 3: VM2VM vhost-user/virtio-net split ring vhost async operation test with tcp traffic using 4K-pages and cbdma enable
 -------------------------------------------------------------------------------------------------------------------------------
-This case test the function of Vhost TSO in the topology of vhost-user/virtio-net split ring mergeable path by verifing the TSO/cksum in the TCP/IP stack
-when vhost uses the asynchronous operations with CBDMA channels in 4K-pages memory environment.
+This case test the function of Vhost TSO in the topology of vhost-user/virtio-net split ring mergeable path by verifing the
+TSO/cksum in the TCP/IP stack when vhost uses the asynchronous operations with CBDMA channels in 4K-pages memory environment.
 
-1. Bind 2 CBDMA channels to vfio-pci, then launch vhost by below command::
+1. Bind 2 CBDMA port to vfio-pci, then launch vhost by below command::
 
-	rm -rf vhost-net*
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-4 -n 4 --no-huge -m 1024 --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 --lcore-dma=[lcore3@0000:00:04.0,lcore4@0000:00:04.1]
-	testpmd>start
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-4 -n 4 --no-huge -m 1024 --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],dma-ring-size=2048' \
+    --vdev 'net_vhost1,iface=vhost-net1,queues=1,tso=1,dmas=[txq0@0000:00:04.1;rxq0@0000:00:04.1],dma-ring-size=2048' \
+    --iova=va -- -i --nb-cores=2 --txd=1024 --rxd=1024
+    testpmd>start
 
 2. 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/tmpfs_nohuge0,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
-	-chardev socket,path=/tmp/vm1_qga0.sock,server,nowait,id=vm1_qga0 -device virtio-serial \
-	-device virtserialport,chardev=vm1_qga0,name=org.qemu.guest_agent.2 -daemonize \
-	-monitor unix:/tmp/vm1_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
-	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
-	-chardev socket,id=char0,path=./vhost-net0 \
-	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on -vnc :10
-
-	taskset -c 33 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 1 -m 4096 \
-	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/tmpfs_nohuge1,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
-	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
-	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
-	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
-	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
-	-chardev socket,id=char0,path=./vhost-net1 \
-	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on -vnc :12
+    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/tmpfs_nohuge0,share=on \
+    -numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+    -chardev socket,path=/tmp/vm1_qga0.sock,server,nowait,id=vm1_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm1_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm1_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+    -chardev socket,id=char0,path=./vhost-net0 \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on -vnc :10
+
+    taskset -c 33 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 1 -m 4096 \
+    -object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/tmpfs_nohuge1,share=on \
+    -numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+    -chardev socket,id=char0,path=./vhost-net1 \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on -vnc :12
 
 3. On VM1, set virtio device IP and run arp protocal::
 
-	ifconfig ens5 1.1.1.2
-	arp -s 1.1.1.8 52:54:00:00:00:02
+    ifconfig ens5 1.1.1.2
+    arp -s 1.1.1.8 52:54:00:00:00:02
 
 4. On VM2, set virtio device IP and run arp protocal::
 
-	ifconfig ens5 1.1.1.8
-	arp -s 1.1.1.2 52:54:00:00:00:01
+    ifconfig ens5 1.1.1.8
+    arp -s 1.1.1.2 52:54:00:00:00:01
 
 5. Check the iperf performance between two VMs by below commands::
 
-	Under VM1, run: `iperf -s -i 1`
-	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+    Under VM1, run: `iperf -s -i 1`
+    Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
 
 6. Check 2VMs can receive and send big packets to each other::
 
-	testpmd>show port xstats all
-	Port 0 should have tx packets above 1522
-	Port 1 should have rx packets above 1522
+    testpmd>show port xstats all
+    Port 0 should have tx packets above 1522
+    Port 1 should have rx packets above 1522
 
 Test Case 4: VM2VM vhost-user/virtio-net packed ring vhost async operation test with tcp traffic using 4K-pages and cbdma enable
 --------------------------------------------------------------------------------------------------------------------------------
-This case test the function of Vhost TSO 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 operations with CBDMA channels in 4K-pages memory environment.
+This case test the function of Vhost TSO 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 operations with CBDMA channels in 4K-pages memory environment.
 
-1. Bind 2 CBDMA channels to vfio-pci, then launch vhost by below command::
+1. Bind 2 CBDMA port to vfio-pci, then launch vhost by below command::
 
-	rm -rf vhost-net*
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-4 -n 4 --no-huge -m 1024 --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 --lcore-dma=[lcore3@0000:00:04.0,lcore4@0000:00:04.1]
-	testpmd>start
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-4 -n 4 --no-huge -m 1024 --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],dma-ring-size=2048' \
+    --vdev 'net_vhost1,iface=vhost-net1,queues=1,tso=1,dmas=[txq0@0000:00:04.1;rxq0@0000:00:04.1],dma-ring-size=2048' \
+    --iova=va -- -i --nb-cores=2 --txd=1024 --rxd=1024
+    testpmd>start
 
 2. 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/tmpfs_nohuge0,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
-	-chardev socket,path=/tmp/vm1_qga0.sock,server,nowait,id=vm1_qga0 -device virtio-serial \
-	-device virtserialport,chardev=vm1_qga0,name=org.qemu.guest_agent.2 -daemonize \
-	-monitor unix:/tmp/vm1_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
-	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
-	-chardev socket,id=char0,path=./vhost-net0 \
-	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :10
-
-	taskset -c 33 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 1 -m 4096 \
-	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/tmpfs_nohuge1,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
-	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
-	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
-	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
-	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
-	-chardev socket,id=char0,path=./vhost-net1 \
-	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
-	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :12
+    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/tmpfs_nohuge0,share=on \
+    -numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+    -chardev socket,path=/tmp/vm1_qga0.sock,server,nowait,id=vm1_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm1_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm1_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+    -chardev socket,id=char0,path=./vhost-net0 \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :10
+
+    taskset -c 33 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 1 -m 4096 \
+    -object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/tmpfs_nohuge1,share=on \
+    -numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+    -chardev socket,id=char0,path=./vhost-net1 \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :12
 
 3. On VM1, set virtio device IP and run arp protocal::
 
-	ifconfig ens5 1.1.1.2
-	arp -s 1.1.1.8 52:54:00:00:00:02
+    ifconfig ens5 1.1.1.2
+    arp -s 1.1.1.8 52:54:00:00:00:02
 
 4. On VM2, set virtio device IP and run arp protocal::
 
-	ifconfig ens5 1.1.1.8
-	arp -s 1.1.1.2 52:54:00:00:00:01
+    ifconfig ens5 1.1.1.8
+    arp -s 1.1.1.2 52:54:00:00:00:01
 
 5. Check the iperf performance between two VMs by below commands::
 
-	Under VM1, run: `iperf -s -i 1`
-	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+    Under VM1, run: `iperf -s -i 1`
+    Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
 
 6. Check 2VMs can receive and send big packets to each other::
 
-	testpmd>show port xstats all
-	Port 0 should have tx packets above 1522
-	Port 1 should have rx packets above 1522
+    testpmd>show port xstats all
+    Port 0 should have tx packets above 1522
+    Port 1 should have rx packets above 1522
 
 Test Case 5: vm2vm vhost/virtio-net split ring multi queues using 4K-pages and cbdma enable
 -------------------------------------------------------------------------------------------
-This case uses iperf and scp to test the payload of large packet (larger than 1MB) is valid after packets forwarding in vm2vm vhost-user/virtio-net
-split ring mergeable path when vhost uses the asynchronous operations with CBDMA channels in 4K-pages memory environment. The dynamic change of multi-queues number is also tested.
+This case uses iperf and scp to test the payload of large packet (larger than 1MB) is valid
+after packets forwarding in vm2vm vhost-user/virtio-net split ring mergeable path when vhost
+uses the asynchronous operations with CBDMA channels in 4K-pages memory environment.
+The dynamic change of multi-queues number is also tested.
 
-1. Bind one port to vfio-pci, launch vhost::
+1. Bind 4 CBDMA port to vfio-pci, launch vhost::
 
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --no-huge -m 1024 --file-prefix=vhost -a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
-	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
-	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7]' \
-	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7]' \
-	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=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
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --no-huge -m 1024 --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 \
+    --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.0;txq3@0000:00:04.0;txq4@0000:00:04.1;txq5@0000:00:04.1;txq6@0000:00:04.1;txq7@0000:00:04.1]' \
+    --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0@0000:00:04.2;txq1@0000:00:04.2;txq2@0000:00:04.2;txq3@0000:00:04.2;txq4@0000:00:04.3;txq5@0000:00:04.3;txq6@0000:00:04.3;txq7@0000:00:04.3]' \
+    --iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8
+    testpmd>start
 
 2. Launch VM 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/tmpfs_nohuge0,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
-	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
-	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
-	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
-	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
-	-chardev socket,id=char0,path=./vhost-net0,server \
-	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
-	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :10
-
-	taskset -c 40 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 8 -m 4096 \
-	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/tmpfs_nohuge1,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
-	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
-	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
-	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
-	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
-	-chardev socket,id=char0,path=./vhost-net1,server \
-	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
-	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :12
+    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/tmpfs_nohuge0,share=on \
+    -numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+    -chardev socket,id=char0,path=./vhost-net0,server \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :10
+
+    taskset -c 40 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 8 -m 4096 \
+    -object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/tmpfs_nohuge1,share=on \
+    -numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+    -chardev socket,id=char0,path=./vhost-net1,server \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :12
 
 3. On VM1, set virtio device IP and run arp protocal::
 
-	ethtool -L ens5 combined 8
-	ifconfig ens5 1.1.1.2
-	arp -s 1.1.1.8 52:54:00:00:00:02
+    ethtool -L ens5 combined 8
+    ifconfig ens5 1.1.1.2
+    arp -s 1.1.1.8 52:54:00:00:00:02
 
 4. On VM2, set virtio device IP and run arp protocal::
 
-	ethtool -L ens5 combined 8
-	ifconfig ens5 1.1.1.8
-	arp -s 1.1.1.2 52:54:00:00:00:01
+    ethtool -L ens5 combined 8
+    ifconfig ens5 1.1.1.8
+    arp -s 1.1.1.2 52:54:00:00:00:01
 
 5. Scp 1MB file form VM1 to VM2::
 
-	Under VM1, run: `scp [xxx] root@1.1.1.8:/`   [xxx] is the file name
+    Under VM1, run: `scp [xxx] root@1.1.1.8:/`   [xxx] is the file name
 
 6. Check the iperf performance between two VMs by below commands::
 
-	Under VM1, run: `iperf -s -i 1`
-	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+    Under VM1, run: `iperf -s -i 1`
+    Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
 
 7. Quit and relaunch vhost w/ diff CBDMA channels::
 
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --no-huge -m 1024 --file-prefix=vhost -a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
-	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
-	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;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]' \
-	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=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
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --no-huge -m 1024 --file-prefix=vhost \
+    -a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 \
+    --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.0;txq3@0000:00:04.0;txq4@0000:00:04.0;txq5@0000:00:04.0;rxq2@0000:00:04.1;rxq3@0000:00:04.1;rxq4@0000:00:04.1;rxq5@0000:00:04.1;rxq6@0000:00:04.1;rxq7@0000:00:04.1],dma-ring-size=1024' \
+    --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0@0000:00:04.2;txq1@0000:00:04.2;txq2@0000:00:04.2;txq3@0000:00:04.2;txq4@0000:00:04.2;txq5@0000:00:04.2;rxq2@0000:00:04.3;rxq3@0000:00:04.3;rxq4@0000:00:04.3;rxq5@0000:00:04.3;rxq6@0000:00:04.3;rxq7@0000:00:04.3],dma-ring-size=1024' \
+    --iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8
+    testpmd>start
 
 8. Rerun step 5-6.
 
@@ -325,11 +330,11 @@ split ring mergeable path when vhost uses the asynchronous operations with CBDMA
 
 10. On VM1, set virtio device::
 
-	ethtool -L ens5 combined 4
+      ethtool -L ens5 combined 4
 
 11. On VM2, set virtio device::
 
-	ethtool -L ens5 combined 4
+      ethtool -L ens5 combined 4
 
 12. Scp 1MB file form VM1 to VM2::
 
@@ -342,227 +347,220 @@ split ring mergeable path when vhost uses the asynchronous operations with CBDMA
 
 14. Quit and relaunch vhost with 1 queues::
 
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --no-huge -m 1024 --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 --rxq=1 --txq=1
-	testpmd>start
+     ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --no-huge -m 1024 --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 --rxq=1 --txq=1
+     testpmd>start
 
 15. On VM1, set virtio device::
 
-	ethtool -L ens5 combined 1
+      ethtool -L ens5 combined 1
 
 16. On VM2, set virtio device::
 
-	ethtool -L ens5 combined 1
+      ethtool -L ens5 combined 1
 
 17. Scp 1MB file form VM1 to VM2M, check packets can be forwarding success by scp::
 
-	Under VM1, run: `scp [xxx] root@1.1.1.8:/`   [xxx] is the file name
+     Under VM1, run: `scp [xxx] root@1.1.1.8:/`   [xxx] is the file name
 
 18. Check the iperf performance, ensure queue0 can work from vhost side::
 
-	Under VM1, run: `iperf -s -i 1`
-	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+     Under VM1, run: `iperf -s -i 1`
+     Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
 
 Test Case 6: vm2vm vhost/virtio-net packed ring multi queues using 4K-pages and cbdma enable
 --------------------------------------------------------------------------------------------
-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 when vhost uses the asynchronous operations with CBDMA channels in 4K-pages memory environment.
+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 when vhost
+uses the asynchronous operations with CBDMA channels in 4K-pages memory environment.
 
-1. Bind one port to vfio-pci, launch vhost::
+1. Bind 2 CBDMA port to vfio-pci, launch vhost::
 
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --no-huge -m 1024 --file-prefix=vhost -a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
-	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
-	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7]' \
-	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7]' \
-	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=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
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --no-huge -m 1024 --file-prefix=vhost \
+    -a 0000:00:04.0 -a 0000:00:04.1 \
+    --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,tso=1,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.0;txq3@0000:00:04.0;txq4@0000:00:04.1;txq5@0000:00:04.1;txq6@0000:00:04.1;txq7@0000:00:04.1]' \
+    --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,tso=1,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.0;txq3@0000:00:04.0;txq4@0000:00:04.1;txq5@0000:00:04.1;txq6@0000:00:04.1;txq7@0000:00:04.1]' \
+    --iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8
+    testpmd>start
 
 2. Launch VM 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/tmpfs_nohuge0,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
-	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
-	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
-	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
-	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
-	-chardev socket,id=char0,path=./vhost-net0,server \
-	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
-	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,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/tmpfs_nohuge1,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
-	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
-	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
-	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
-	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
-	-chardev socket,id=char0,path=./vhost-net1,server \
-	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
-	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :12
+    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/tmpfs_nohuge0,share=on \
+    -numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+    -chardev socket,id=char0,path=./vhost-net0,server \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,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/tmpfs_nohuge1,share=on \
+    -numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
+    -chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+    -device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
+    -monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
+    -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
+    -chardev socket,id=char0,path=./vhost-net1,server \
+    -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
+    -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :12
 
 3. On VM1, set virtio device IP and run arp protocal::
 
-	ethtool -L ens5 combined 8
-	ifconfig ens5 1.1.1.2
-	arp -s 1.1.1.8 52:54:00:00:00:02
+    ethtool -L ens5 combined 8
+    ifconfig ens5 1.1.1.2
+    arp -s 1.1.1.8 52:54:00:00:00:02
 
 4. On VM2, set virtio device IP and run arp protocal::
 
-	ethtool -L ens5 combined 8
-	ifconfig ens5 1.1.1.8
-	arp -s 1.1.1.2 52:54:00:00:00:01
+    ethtool -L ens5 combined 8
+    ifconfig ens5 1.1.1.8
+    arp -s 1.1.1.2 52:54:00:00:00:01
 
 5. Scp 1MB file form VM1 to VM2::
 
-	Under VM1, run: `scp [xxx] root@1.1.1.8:/`   [xxx] is the file name
+    Under VM1, run: `scp [xxx] root@1.1.1.8:/`   [xxx] is the file name
 
 6. Check the iperf performance between two VMs by below commands::
 
-	Under VM1, run: `iperf -s -i 1`
-	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+    Under VM1, run: `iperf -s -i 1`
+    Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
 
 Test Case 7: vm2vm vhost/virtio-net split ring multi queues using 1G/4k-pages and cbdma enable
 ----------------------------------------------------------------------------------------------
-This case uses iperf and scp to test the payload of large packet (larger than 1MB) is valid after packets forwarding in vm2vm vhost-user/virtio-net
-split ring mergeable path when vhost uses the asynchronous operations with CBDMA channels,the back-end is in 1G-pages memory environment and the front-end is in 4k-pages memory environment.
-
-1. Bind 16 CBDMA channel to vfio-pci, launch vhost::
+This case uses iperf and scp to test the payload of large packet (larger than 1MB) is valid
+after packets forwarding in vm2vm vhost-user/virtio-net split ring mergeable path when vhost
+uses the asynchronous operations with CBDMA channels,the back-end is in 1G-pages memory
+environment and the front-end is in 4k-pages memory environment.
 
-	./usertools/dpdk-devbind.py --bind=vfio-pci 0000:80:04.0 0000:80:04.1 0000:80:04.2 0000:80:04.3 0000:80:04.4 0000:80:04.5 0000:80:04.6 0000:80:04.7 \
-	0000:00:04.0 0000:00:04.1 0000:00:04.2 0000:00:04.3 0000:00:04.4 0000:00:04.5 0000:00:04.6 0000:00:04.7
+1. Bind 4 CBDMA port to vfio-pci, launch vhost::
 
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-33 -n 4 -m 1024 --file-prefix=vhost \
-	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
-	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
-	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;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]' \
-	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8 \
-	--lcore-dma=[lcore30@0000:80:04.0,lcore30@0000:80:04.1,lcore30@0000:00:04.2,lcore30@0000:00:04.3,lcore31@0000:00:04.4,lcore31@0000:00:04.5,lcore31@0000:00:04.6,lcore31@0000:00:04.7,lcore32@0000:80:04.0,lcore32@0000:80:04.1,lcore32@0000:80:04.2,lcore32@0000:80:04.3,lcore33@0000:80:04.4,lcore33@0000:80:04.5,lcore33@0000:80:04.6,lcore33@0000:80:04.7]
-	testpmd>start
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-33 -n 4 -m 1024 --file-prefix=vhost \
+    -a 0000:00:04.0 -a 0000:00:04.1 \
+    --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.0;txq3@0000:00:04.0;txq4@0000:00:04.0;txq5@0000:00:04.0;rxq2@0000:00:04.1;rxq3@0000:00:04.1;rxq4@0000:00:04.1;rxq5@0000:00:04.1;rxq6@0000:00:04.1;rxq7@0000:00:04.1],dma-ring-size=1024' \
+    --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.0;txq3@0000:00:04.0;txq4@0000:00:04.0;txq5@0000:00:04.0;rxq2@0000:00:04.1;rxq3@0000:00:04.1;rxq4@0000:00:04.1;rxq5@0000:00:04.1;rxq6@0000:00:04.1;rxq7@0000:00:04.1],dma-ring-size=1024' \
+    --iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8
+    testpmd>start
 
 2. Launch VM qemu::
 
-	taskset -c 20,21,22,23,24,25,26,27 /home/QEMU/qemu-6.2.0/bin/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/tmpfs_nohuge0,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/image/ubuntu2004.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:10.239.251.220:6000-: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 48,49,50,51,52,53,54,55 /home/QEMU/qemu-6.2.0/bin/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/tmpfs_nohuge1,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/image/ubuntu2004_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:10.239.251.220:6001-: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
+    taskset -c 20,21,22,23,24,25,26,27 /home/QEMU/qemu-6.2.0/bin/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/tmpfs_nohuge0,share=on \
+    -numa node,memdev=mem -mem-prealloc -drive file=/home/image/ubuntu2004.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:10.239.251.220:6000-: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 48,49,50,51,52,53,54,55 /home/QEMU/qemu-6.2.0/bin/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/tmpfs_nohuge1,share=on \
+    -numa node,memdev=mem -mem-prealloc -drive file=/home/image/ubuntu2004_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:10.239.251.220:6001-: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, set virtio device IP and run arp protocal::
 
-	ethtool -L ens5 combined 8
-	ifconfig ens5 1.1.1.2
-	arp -s 1.1.1.8 52:54:00:00:00:02
+    ethtool -L ens5 combined 8
+    ifconfig ens5 1.1.1.2
+    arp -s 1.1.1.8 52:54:00:00:00:02
 
 4. On VM2, set virtio device IP and run arp protocal::
 
-	ethtool -L ens5 combined 8
-	ifconfig ens5 1.1.1.8
-	arp -s 1.1.1.2 52:54:00:00:00:01
+    ethtool -L ens5 combined 8
+    ifconfig ens5 1.1.1.8
+    arp -s 1.1.1.2 52:54:00:00:00:01
 
 5. Scp 1MB file form VM1 to VM2::
 
-	Under VM1, run: `scp [xxx] root@1.1.1.8:/` [xxx] is the file name
+    Under VM1, run: `scp [xxx] root@1.1.1.8:/` [xxx] is the file name
 
 6. Check the iperf performance between two VMs by below commands::
 
-	Under VM1, run: `iperf -s -i 1`
-	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+    Under VM1, run: `iperf -s -i 1`
+    Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
 
 7. Quit and relaunch vhost w/ diff CBDMA channels::
 
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --no-huge -m 1024 --file-prefix=vhost -a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
-	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
-	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6;txq7;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \
-	--vdev 'net_vhost1,iface=vhost-net1,client=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 --rxq=8 --txq=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
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --no-huge -m 1024 --file-prefix=vhost \
+    -a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 \
+    --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq00000:00:04.0;txq10000:00:04.0;txq20000:00:04.0;txq30000:00:04.0;txq4@0000:00:04.1;txq5@0000:00:04.1;txq6@0000:00:04.1;txq7@0000:00:04.1;rxq0@0000:00:04.2;rxq1@0000:00:04.2;rxq2@0000:00:04.2;rxq3@0000:00:04.2;rxq4@0000:00:04.3;rxq5@0000:00:04.3;rxq6@0000:00:04.3;rxq7@0000:00:04.3]' \
+    --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq00000:00:04.0;txq10000:00:04.0;txq20000:00:04.0;txq30000:00:04.0;txq4@0000:00:04.1;txq5@0000:00:04.1;txq6@0000:00:04.1;txq7@0000:00:04.1;rxq0@0000:00:04.2;rxq1@0000:00:04.2;rxq2@0000:00:04.2;rxq3@0000:00:04.2;rxq4@0000:00:04.3;rxq5@0000:00:04.3;rxq6@0000:00:04.3;rxq7@0000:00:04.3]' \
+    --iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8
+    testpmd>start
 
 8. Rerun step 5-6.
 
 Test Case 8: vm2vm vhost/virtio-net split packed ring multi queues with 1G/4k-pages and cbdma enable
 ----------------------------------------------------------------------------------------------------
-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 and packed ring mergeable path when vhost uses the asynchronous operations with CBDMA channels,the back-end is in 1G-pages memory environment and the front-end is in 4k-pages memory environment.
+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 and packed ring mergeable path when vhost
+uses the asynchronous operations with CBDMA channels,the back-end is in 1G-pages memory environment
+and the front-end is in 4k-pages memory environment.
 
-1. Bind 16 CBDMA channel to vfio-pci, launch vhost::
+1. Bind 8 CBDMA port to vfio-pci, launch vhost::
 
-	./usertools/dpdk-devbind.py --bind=vfio-pci 0000:80:04.0 0000:80:04.1 0000:80:04.2 0000:80:04.3 0000:80:04.4 0000:80:04.5 0000:80:04.6 0000:80:04.7 \
-	0000:00:04.0 0000:00:04.1 0000:00:04.2 0000:00:04.3 0000:00:04.4 0000:00:04.5 0000:00:04.6 0000:00:04.7
-
-	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-33 -n 4 -m 1024 --file-prefix=vhost \
-	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
-	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
-	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;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]' \
-	--iova=va -- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8 \
-	--lcore-dma=[lcore30@0000:80:04.0,lcore30@0000:80:04.1,lcore30@0000:00:04.2,lcore30@0000:00:04.3,lcore31@0000:00:04.4,lcore31@0000:00:04.5,lcore31@0000:00:04.6,lcore31@0000:00:04.7,lcore32@0000:80:04.0,lcore32@0000:80:04.1,lcore32@0000:80:04.2,lcore32@0000:80:04.3,lcore33@0000:80:04.4,lcore33@0000:80:04.5,lcore33@0000:80:04.6,lcore33@0000:80:04.7]
-	testpmd>start
+    ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-33 -n 4 -m 1024 --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 \
+    --vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.0;txq2@0000:00:04.0;txq3@0000:00:04.0;txq4@0000:00:04.1;txq5@0000:00:04.1;rxq2@0000:00:04.2;rxq3@0000:00:04.2;rxq4@0000:00:04.3;rxq5@0000:00:04.3;rxq6@0000:00:04.3;rxq7@0000:00:04.3]' \
+    --vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0@0000:00:04.4;txq1@0000:00:04.4;txq2@0000:00:04.4;txq3@0000:00:04.4;txq4@0000:00:04.5;txq5@0000:00:04.5;rxq2@0000:00:04.6;rxq3@0000:00:04.6;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 --rxq=8 --txq=8
+    testpmd>start
 
 2. Launch VM qemu::
 
-	taskset -c 20,21,22,23,24,25,26,27 /home/QEMU/qemu-6.2.0/bin/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/tmpfs_nohuge0,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/image/ubuntu2004.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:10.239.251.220:6000-: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 48,49,50,51,52,53,54,55 /home/QEMU/qemu-6.2.0/bin/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/tmpfs_nohuge1,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/image/ubuntu2004_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:10.239.251.220:6001-: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
+    taskset -c 20,21,22,23,24,25,26,27 /home/QEMU/qemu-6.2.0/bin/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/tmpfs_nohuge0,share=on \
+    -numa node,memdev=mem -mem-prealloc -drive file=/home/image/ubuntu2004.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:10.239.251.220:6000-: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 48,49,50,51,52,53,54,55 /home/QEMU/qemu-6.2.0/bin/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/tmpfs_nohuge1,share=on \
+    -numa node,memdev=mem -mem-prealloc -drive file=/home/image/ubuntu2004_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:10.239.251.220:6001-: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, set virtio device IP and run arp protocal::
 
-	ethtool -L ens5 combined 8
-	ifconfig ens5 1.1.1.2
-	arp -s 1.1.1.8 52:54:00:00:00:02
+    ethtool -L ens5 combined 8
+    ifconfig ens5 1.1.1.2
+    arp -s 1.1.1.8 52:54:00:00:00:02
 
 4. On VM2, set virtio device IP and run arp protocal::
 
-	ethtool -L ens5 combined 8
-	ifconfig ens5 1.1.1.8
-	arp -s 1.1.1.2 52:54:00:00:00:01
+    ethtool -L ens5 combined 8
+    ifconfig ens5 1.1.1.8
+    arp -s 1.1.1.2 52:54:00:00:00:01
 
 5. Scp 1MB file form VM1 to VM2::
 
-	Under VM1, run: `scp [xxx] root@1.1.1.8:/` [xxx] is the file name
+    Under VM1, run: `scp [xxx] root@1.1.1.8:/` [xxx] is the file name
 
 6. Check the iperf performance between two VMs by below commands::
 
-	Under VM1, run: `iperf -s -i 1`
-	Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
+    Under VM1, run: `iperf -s -i 1`
+    Under VM2, run: `iperf -c 1.1.1.2 -i 1 -t 60`
 
 7. Relaunch VM1, and rerun step 3.
 
