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+.. Copyright (c) <2022>, Intel Corporation
+   All rights reserved.
+
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+
+========================================================
+Vswitch PVP multi-paths performance with CBDMA test plan
+========================================================
+
+Description
+===========
+
+Benchmark PVP multi-paths performance with CBDMA in vhost sample,
+include 10 tx/rx paths: inorder mergeable, inorder non-mergeable,
+mergeable, non-mergeable, vectorized_rx, virtio 1.1 inorder mergeable,
+virtio 1.1 inorder non-mergeable, virtio 1.1  mergeable, virtio 1.1 non-mergeable,
+virtio1.1 vectorized path. Give 1 core for vhost and virtio respectively.
+About vswitch sample, a new option --total-num-mbufs is added from dpdk-22.03,
+for the user to set larger mbuf pool to avoid launch fail. For example, dpdk-vhost
+will fail to launch with a 40G i40e port without setting larger mbuf pool.
+For more about vhost switch sample, please refer to the dpdk docs:
+http://doc.dpdk.org/guides/sample_app_ug/vhost.html
+For virtio-user vdev parameter, you can refer to the dpdk doc:
+https://doc.dpdk.org/guides/nics/virtio.html#virtio-paths-selection-and-usage
+
+Prerequisites
+=============
+
+Topology
+--------
+
+Test flow: TG-->nic-->vswitch-->virtio-user-->vswitch-->nic-->TG
+
+Hardware
+--------
+Supportted NICs: all except columbiaville that not support VMDQ
+
+Software
+--------
+Trex:http://trex-tgn.cisco.com/trex/release/v2.26.tar.gz
+
+General set up
+--------------
+1. Compile DPDK and vhost example::
+
+	# meson <dpdk build dir>  
+	# meson configure -Dexamples=vhost <dpdk build dir> 
+	# ninja -C <dpdk build dir> -j 110
+
+2. Get the pci device id and DMA device id of DUT.
+
+For example, 0000:18:00.0 is pci device id, 0000:00:04.0 is DMA device id::
+
+	<dpdk dir># ./usertools/dpdk-devbind.py -s
+
+	Network devices using kernel driver
+	===================================
+	0000:18:00.0 'Device 159b' if=ens785f0 drv=ice unused=vfio-pci
+	
+	DMA devices using kernel driver
+	===============================
+	0000:00:04.0 'Sky Lake-E CBDMA Registers 2021' drv=ioatdma unused=vfio-pci
+
+Test case
+=========	
+
+Common steps
+------------
+1. Bind one physical port and one CBDMA port to vfio-pci::
+
+	<dpdk dir># ./usertools/dpdk-devbind.py -b vfio-pci <DUT port pci device id>
+	<dpdk dir># ./usertools/dpdk-devbind.py -b vfio-pci <DUT port DMA device id>
+	
+	For example::
+	./usertools/dpdk-devbind.py -b vfio-pci 0000:00:18.0
+	./usertools/dpdk-devbind.py -b vfio-pci 0000:00:04.0
+
+2. Inject different size of packets to NIC by traffic generator::
+
+	The packet size include [64, 128, 256, 512, 1024, 1518], and the format of packet is as follows.
+    +-------------+-------------+-------------+-------------+
+    | MAC         | MAC         | IPV4        | IPV4        |
+    | Src address | Dst address | Src address | Dst address |
+    |-------------|-------------|-------------|-------------|
+    | Any MAC     | Virtio mac  | Any IP      | Any IP      |
+    +-------------+-------------+-------------+-------------+
+	All the packets in this test plan use the Virtio mac:00:11:22:33:44:10.
+
+Test Case 1: Vswitch PVP split ring inorder mergeable path performance with CBDMA
+---------------------------------------------------------------------------------
+This case uses Vswitch and Traffic generator(For example, Trex) to test performance of split ring inorder mergeable path with CBDMA. 
+
+1. Bind one physical port and one CBDMA port to vfio-pci as common step 1.
+
+2. Launch dpdk-vhost by below command::
+
+	<dpdk dir>#./<dpdk build dir>/examples/dpdk-vhost -l 2-3 -n 4 -a 0000:18:00.0 -a 0000:00:04.0 \
+	-- -p 0x1 --mergeable 1 --vm2vm 1 --stats 1 --socket-file /tmp/vhost-net --dmas [txd0@0000:00:04.0] --total-num-mbufs 600000
+
+3. Launch virtio-user with split ring inorder mergeable path::
+
+	<dpdk dir>#./<dpdk build dir>/app/dpdk-testpmd -l 5-6 -n 4 --no-pci --file-prefix=testpmd0  \
+	--vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=1,packed_vq=0,mrg_rxbuf=1,in_order=1 \
+	-- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 
+
+4. Send packets from virtio-user to let vswitch know the mac addr::
+
+	testpmd> set fwd mac
+	testpmd> start tx_first
+	testpmd> stop
+	testpmd> start
+
+5. Send packets by traffic generator as common step 2, and check the throughput with below command::
+
+	testpmd> show port stats all
+
+Test Case 2: Vswitch PVP split ring inorder non-mergeable path performance with CBDMA
+-------------------------------------------------------------------------------------
+This case uses Vswitch and Traffic generator(For example, Trex) to test performance of split ring inorder non-mergeable path with CBDMA.
+
+1. Bind one physical port and one CBDMA port to vfio-pci as common step 1.
+
+2. Launch dpdk-vhost by below command::
+
+	<dpdk dir>#./<dpdk build dir>/examples/dpdk-vhost -l 2-3 -n 4 -a 0000:18:00.0 -a 0000:00:04.0 \
+	-- -p 0x1 --mergeable 1 --vm2vm 1 --stats 1 --socket-file /tmp/vhost-net --dmas [txd0@0000:00:04.0] --total-num-mbufs 600000
+
+3. Launch virtio-user with split ring non-mergeable path::
+
+	<dpdk dir>#./<dpdk build dir>/app/dpdk-testpmd -l 5-6 -n 4 --no-pci --file-prefix=testpmd0  \
+	--vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=1,packed_vq=0,mrg_rxbuf=0,in_order=1 \
+	-- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 
+
+4. Send packets from virtio-user to let vswitch know the mac addr::
+
+	testpmd> set fwd mac
+	testpmd> start tx_first
+	testpmd> stop
+	testpmd> start
+
+5. Send packets by traffic generator as common step 2, and check the throughput with below command::
+
+	testpmd> show port stats all
+	
+Test Case 3: Vswitch PVP split ring mergeable path performance with CBDMA
+-------------------------------------------------------------------------
+This case uses Vswitch and Traffic generator(For example, Trex) to test performance of split ring mergeable path with CBDMA.
+
+1. Bind one physical port and one CBDMA port to vfio-pci as common step 1.
+
+2. Launch dpdk-vhost by below command::
+
+	<dpdk dir>#./<dpdk build dir>/examples/dpdk-vhost -l 2-3 -n 4 -a 0000:18:00.0 -a 0000:00:04.0 \
+	-- -p 0x1 --mergeable 1 --vm2vm 1 --stats 1 --socket-file /tmp/vhost-net --dmas [txd0@0000:00:04.0] --total-num-mbufs 600000
+
+3. Launch virtio-user with split ring mergeable path::
+
+	<dpdk dir>#./<dpdk build dir>/app/dpdk-testpmd -l 5-6 -n 4 --no-pci --file-prefix=testpmd0  \
+	--vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=1,packed_vq=0,mrg_rxbuf=1,in_order=0 \
+	-- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 
+
+4. Send packets from virtio-user to let vswitch know the mac addr::
+
+	testpmd> set fwd mac
+	testpmd> start tx_first
+	testpmd> stop
+	testpmd> start
+
+5. Send packets by traffic generator as common step 2, and check the throughput with below command::
+
+	testpmd> show port stats all	
+	
+Test Case 4: Vswitch PVP split ring non-mergeable path performance with CBDMA
+-----------------------------------------------------------------------------
+This case uses Vswitch and Traffic generator(For example, Trex) to test performance of split ring non-mergeable path with CBDMA.
+
+1. Bind one physical port and one CBDMA port to vfio-pci as common step 1.
+
+2. Launch dpdk-vhost by below command::
+
+	<dpdk dir>#./<dpdk build dir>/examples/dpdk-vhost -l 2-3 -n 4 -a 0000:18:00.0 -a 0000:00:04.0 \
+	-- -p 0x1 --mergeable 1 --vm2vm 1 --stats 1 --socket-file /tmp/vhost-net --dmas [txd0@0000:00:04.0] --total-num-mbufs 600000
+
+3. Launch virtio-user with split ring non-mergeable path::
+
+	<dpdk dir>#./<dpdk build dir>/app/dpdk-testpmd -l 5-6 -n 4 --no-pci --file-prefix=testpmd0  \
+	--vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=1,packed_vq=0,mrg_rxbuf=0,in_order=0 \
+	-- -i --enable-hw-vlan-strip --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 
+
+4. Send packets from virtio-user to let vswitch know the mac addr::
+
+	testpmd> set fwd mac
+	testpmd> start tx_first
+	testpmd> stop
+	testpmd> start
+
+5. Send packets by traffic generator as common step 2, and check the throughput with below command::
+
+	testpmd> show port stats all		
+
+Test Case 5: Vswitch PVP split ring vectorized path performance with CBDMA
+--------------------------------------------------------------------------
+This case uses Vswitch and Traffic generator(For example, Trex) to test performance of split ring vectorized path with CBDMA.
+
+1. Bind one physical port and one CBDMA port to vfio-pci as common step 1.
+
+2. Launch dpdk-vhost by below command::
+
+	<dpdk dir>#./<dpdk build dir>/examples/dpdk-vhost -l 2-3 -n 4 -a 0000:18:00.0 -a 0000:00:04.0 \
+	-- -p 0x1 --mergeable 1 --vm2vm 1 --stats 1 --socket-file /tmp/vhost-net --dmas [txd0@0000:00:04.0] --total-num-mbufs 600000
+
+3. Launch virtio-user with split ring vectorized path::
+
+	<dpdk dir>#./<dpdk build dir>/app/dpdk-testpmd -l 5-6 -n 4 --no-pci --file-prefix=testpmd0 \
+	--vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=1,packed_vq=0,mrg_rxbuf=0,in_order=1,vectorized=1 \
+	-- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 
+
+4. Send packets from virtio-user to let vswitch know the mac addr::
+
+	testpmd> set fwd mac
+	testpmd> start tx_first
+	testpmd> stop
+	testpmd> start
+
+5. Send packets by traffic generator as common step 2, and check the throughput with below command::
+
+	testpmd> show port stats all		
+	
+	
+Test Case 6: Vswitch PVP packed ring inorder mergeable path performance with CBDMA
+----------------------------------------------------------------------------------
+This case uses Vswitch and Traffic generator(For example, Trex) to test performance of packed ring inorder mergeable path with CBDMA.
+
+1. Bind one physical port and one CBDMA port to vfio-pci as common step 1.
+
+2. Launch dpdk-vhost by below command::
+
+	<dpdk dir>#./<dpdk build dir>/examples/dpdk-vhost -l 2-3 -n 4 -a 0000:18:00.0 -a 0000:00:04.0 \
+	-- -p 0x1 --mergeable 1 --vm2vm 1 --stats 1 --socket-file /tmp/vhost-net --dmas [txd0@0000:00:04.0] --total-num-mbufs 600000
+
+3. Launch virtio-user with packed ring inorder mergeable path::
+
+	<dpdk dir>#./<dpdk build dir>/app/dpdk-testpmd -l 5-6 -n 4 --no-pci --file-prefix=testpmd0  \
+	--vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=1,packed_vq=1,mrg_rxbuf=1,in_order=1 \
+	-- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 
+
+4. Send packets from virtio-user to let vswitch know the mac addr::
+
+	testpmd> set fwd mac
+	testpmd> start tx_first
+	testpmd> stop
+	testpmd> start
+
+5. Send packets by traffic generator as common step 2, and check the throughput with below command::
+
+	testpmd> show port stats all
+
+Test Case 7: Vswitch PVP packed ring inorder non-mergeable path performance with CBDMA
+--------------------------------------------------------------------------------------
+This case uses Vswitch and Traffic generator(For example, Trex) to test performance of packed ring inorder non-mergeable path with CBDMA.
+
+1. Bind one physical port and one CBDMA port to vfio-pci as common step 1.
+
+2. Launch dpdk-vhost by below command::
+
+	<dpdk dir>#./<dpdk build dir>/examples/dpdk-vhost -l 2-3 -n 4 -a 0000:18:00.0 -a 0000:00:04.0 \
+	-- -p 0x1 --mergeable 1 --vm2vm 1 --stats 1 --socket-file /tmp/vhost-net --dmas [txd0@0000:00:04.0] --total-num-mbufs 600000
+
+3. Launch virtio-user with packed ring inorder non-mergeable path::
+
+	<dpdk dir>#./<dpdk build dir>/app/dpdk-testpmd -l 5-6 -n 4 --no-pci --file-prefix=testpmd0  \
+	--vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=1,packed_vq=1,mrg_rxbuf=0,in_order=1 \
+	-- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 
+
+4. Send packets from virtio-user to let vswitch know the mac addr::
+
+	testpmd> set fwd mac
+	testpmd> start tx_first
+	testpmd> stop
+	testpmd> start
+
+5. Send packets by traffic generator as common step 2, and check the throughput with below command::
+
+	testpmd> show port stats all
+	
+Test Case 8: Vswitch PVP packed ring mergeable path performance with CBDMA
+--------------------------------------------------------------------------
+This case uses Vswitch and Traffic generator(For example, Trex) to test performance of packed ring mergeable path with CBDMA.
+
+1. Bind one physical port and one CBDMA port to vfio-pci as common step 1.
+
+2. Launch dpdk-vhost by below command::
+
+	<dpdk dir>#./<dpdk build dir>/examples/dpdk-vhost -l 2-3 -n 4 -a 0000:18:00.0 -a 0000:00:04.0 \
+	-- -p 0x1 --mergeable 1 --vm2vm 1 --stats 1 --socket-file /tmp/vhost-net --dmas [txd0@0000:00:04.0] --total-num-mbufs 600000
+
+3. Launch virtio-user with packed ring mergeable path::
+
+	<dpdk dir>#./<dpdk build dir>/app/dpdk-testpmd -l 5-6 -n 4 --no-pci --file-prefix=testpmd0  \
+	--vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=1,packed_vq=1,mrg_rxbuf=1,in_order=0 \
+	-- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1
+
+4. Send packets from virtio-user to let vswitch know the mac addr::
+
+	testpmd> set fwd mac
+	testpmd> start tx_first
+	testpmd> stop
+	testpmd> start
+
+5. Send packets by traffic generator as common step 2, and check the throughput with below command::
+
+	testpmd> show port stats all	
+	
+Test Case 9: Vswitch PVP packed ring non-mergeable path performance with CBDMA
+------------------------------------------------------------------------------
+This case uses Vswitch and Traffic generator(For example, Trex) to test performance of packed ring non-mergeable path with CBDMA.
+
+1. Bind one physical port and one CBDMA port to vfio-pci as common step 1.
+
+2. Launch dpdk-vhost by below command::
+
+	<dpdk dir>#./<dpdk build dir>/examples/dpdk-vhost -l 2-3 -n 4 -a 0000:18:00.0 -a 0000:00:04.0 \
+	-- -p 0x1 --mergeable 1 --vm2vm 1 --stats 1 --socket-file /tmp/vhost-net --dmas [txd0@0000:00:04.0] --total-num-mbufs 600000
+
+3. Launch virtio-user with packed ring non-mergeable path::
+
+	<dpdk dir>#./<dpdk build dir>/app/dpdk-testpmd -l 5-6 -n 4 --no-pci --file-prefix=testpmd0  \
+	--vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=1,packed_vq=1,mrg_rxbuf=0,in_order=0 \
+	-- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 
+
+4. Send packets from virtio-user to let vswitch know the mac addr::
+
+	testpmd> set fwd mac
+	testpmd> start tx_first
+	testpmd> stop
+	testpmd> start
+
+5. Send packets by traffic generator as common step 2, and check the throughput with below command::
+
+	testpmd> show port stats all		
+
+Test Case 10: Vswitch PVP packed ring vectorized path performance with CBDMA
+----------------------------------------------------------------------------
+This case uses Vswitch and Traffic generator(For example, Trex) to test performance of packed ring vectorized path with CBDMA.
+
+1. Bind one physical port and one CBDMA port to vfio-pci as common step 1.
+
+2. Launch dpdk-vhost by below command::
+
+	<dpdk dir>#./<dpdk build dir>/examples/dpdk-vhost -l 2-3 -n 4 -a 0000:18:00.0 -a 0000:00:04.0 \
+	-- -p 0x1 --mergeable 1 --vm2vm 1 --stats 1 --socket-file /tmp/vhost-net --dmas [txd0@0000:00:04.0] --total-num-mbufs 600000
+
+3. Launch virtio-user with packed ring vectorized path::
+
+	<dpdk dir>#./<dpdk build dir>/app/dpdk-testpmd -l 5-6 -n 4 --no-pci --file-prefix=testpmd0 --force-max-simd-bitwidth=512 \
+	--vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=1,packed_vq=1,mrg_rxbuf=0,in_order=1,vectorized=1 \
+	-- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1
+
+4. Send packets from virtio-user to let vswitch know the mac addr::
+
+	testpmd> set fwd mac
+	testpmd> start tx_first
+	testpmd> stop
+	testpmd> start
+
+5. Send packets by traffic generator as common step 2, and check the throughput with below command::
+
+	testpmd> show port stats all		
