From patchwork Wed Aug 3 01:52:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Ling, WeiX" X-Patchwork-Id: 114554 Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 8E795A00C5; Wed, 3 Aug 2022 03:58:04 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 86A09427F6; Wed, 3 Aug 2022 03:58:04 +0200 (CEST) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by mails.dpdk.org (Postfix) with ESMTP id 714B040141 for ; Wed, 3 Aug 2022 03:58:03 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1659491883; x=1691027883; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=+iXRsaN+JDA0xQonyZYLQPOmnTGzg2J5cCJkjHSgs0A=; b=GTngkbJ64nVenpK1gNQ6M3C7jkVSaXX50IUGu46paz5ui0oa7FidhFXt pOMfDAnG7FxmbmI6miMpZ0Runab3ujraafOtp/QLMYJkiY/6nwOxIFg5j LhL/uhhOr6RmDXptsKdkLr0R8Dt6PjzXAxGJNTerrn614SFX+W4Dgz4E1 Ds9ujDYBe+XDZFaGzKewQ6TvkitsldbOHKRymeLZLE8JZl+MNCAq8gIjH +EOLt2x9UeTvCzNR2jpjpdpMq2DWQ+BhXUd4mjSyed8ggnX8WbPS5pOQj MqQxIzhKQOzJiz5RL+TWJz5Q5QQit+3ntVQuIqhyDzB8k5Mvl0h0QGsIY w==; X-IronPort-AV: E=McAfee;i="6400,9594,10427"; a="353563731" X-IronPort-AV: E=Sophos;i="5.93,212,1654585200"; d="scan'208,223";a="353563731" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Aug 2022 18:58:02 -0700 X-IronPort-AV: E=Sophos;i="5.93,212,1654585200"; d="scan'208,223";a="630953267" Received: from unknown (HELO localhost.localdomain) ([10.239.252.222]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Aug 2022 18:58:01 -0700 From: Wei Ling To: dts@dpdk.org Cc: Wei Ling Subject: [dts][PATCH V3 1/2] test_plans/loopback_virtio_user_server_mode_cbdma_test_plan: modify testplan to test virtio dequeue Date: Tue, 2 Aug 2022 21:52:23 -0400 Message-Id: <20220803015223.1123105-1-weix.ling@intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-BeenThere: dts@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: test suite reviews and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dts-bounces@dpdk.org From DPDK-22.07, virtio support async dequeue for split and packed ring path, so modify loopback_virtio_user_server_mode_cbdma testplan to test the split and packed ring async dequeue feature. Signed-off-by: Wei Ling --- ...irtio_user_server_mode_cbdma_test_plan.rst | 120 +++++++++--------- 1 file changed, 59 insertions(+), 61 deletions(-) diff --git a/test_plans/loopback_virtio_user_server_mode_cbdma_test_plan.rst b/test_plans/loopback_virtio_user_server_mode_cbdma_test_plan.rst index 8e083bfe..83d12db5 100644 --- a/test_plans/loopback_virtio_user_server_mode_cbdma_test_plan.rst +++ b/test_plans/loopback_virtio_user_server_mode_cbdma_test_plan.rst @@ -1,20 +1,20 @@ .. SPDX-License-Identifier: BSD-3-Clause Copyright(c) 2022 Intel Corporation -============================================================ +=========================================================== Loopback vhost/virtio-user server mode with CBDMA test plan -============================================================ +=========================================================== Description =========== Vhost asynchronous data path leverages DMA devices to offload memory copies from the CPU and it is implemented in an asynchronous way. In addition, vhost supports M:N mapping between vrings and DMA virtual channels. Specifically, one vring can use multiple different DMA -channels and one DMA channel can be shared by multiple vrings at the same time. Vhost enqueue operation with CBDMA channels is supported -in both split and packed ring. +channels and one DMA channel can be shared by multiple vrings at the same time. From DPDK22.07, Vhost enqueue and dequeue operation with +CBDMA channels is supported in both split and packed ring. This document provides the test plan for testing the following features when Vhost-user using asynchronous data path with -CBDMA channels in loopback virtio-user topology. +CBDMA channels in loopback vhost-user/virtio-user topology. 1. Virtio-user server mode is a feature to enable virtio-user as the server, vhost as the client, thus after vhost-user is killed then relaunched, virtio-user can reconnect back to vhost-user again; at another hand, virtio-user also can reconnect back to vhost-user after virtio-user is killed. This feature test need cover different rx/tx paths with virtio 1.0 and virtio 1.1, includes split ring mergeable, non-mergeable, inorder mergeable, @@ -43,24 +43,24 @@ General set up -------------- 1. Compile DPDK:: - # CC=gcc meson --werror -Denable_kmods=True -Dlibdir=lib -Dexamples=all --default-library= - # ninja -C -j 110 - For example: - CC=gcc meson --werror -Denable_kmods=True -Dlibdir=lib -Dexamples=all --default-library=x86_64-native-linuxapp-gcc - ninja -C x86_64-native-linuxapp-gcc -j 110 + # CC=gcc meson --werror -Denable_kmods=True -Dlibdir=lib -Dexamples=all --default-library=static + # ninja -C -j 110 + For example: + CC=gcc meson --werror -Denable_kmods=True -Dlibdir=lib -Dexamples=all --default-library=static x86_64-native-linuxapp-gcc + ninja -C x86_64-native-linuxapp-gcc -j 110 2. Get the PCI device ID and DMA device ID of DUT, for example, 0000:18:00.0 is PCI device ID, 0000:00:04.0, 0000:00:04.1 is DMA device ID:: - # ./usertools/dpdk-devbind.py -s + # ./usertools/dpdk-devbind.py -s - Network devices using kernel driver - =================================== - 0000:18:00.0 'Device 159b' if=ens785f0 drv=ice unused=vfio-pci + Network devices using kernel driver + =================================== + 0000:18:00.0 'Device 159b' if=ens785f0 drv=ice unused=vfio-pci - DMA devices using kernel driver - =============================== - 0000:00:04.0 'Sky Lake-E CBDMA Registers 2021' drv=ioatdma unused=vfio-pci - 0000:00:04.1 'Sky Lake-E CBDMA Registers 2021' drv=ioatdma unused=vfio-pci + DMA devices using kernel driver + =============================== + 0000:00:04.0 'Sky Lake-E CBDMA Registers 2021' drv=ioatdma unused=vfio-pci + 0000:00:04.1 'Sky Lake-E CBDMA Registers 2021' drv=ioatdma unused=vfio-pci Test case ========= @@ -69,33 +69,32 @@ Common steps ------------ 1. Bind 1 NIC port and CBDMA channels to vfio-pci:: - # ./usertools/dpdk-devbind.py -b vfio-pci - # ./usertools/dpdk-devbind.py -b vfio-pci + # ./usertools/dpdk-devbind.py -b vfio-pci + # ./usertools/dpdk-devbind.py -b vfio-pci - For example, bind 2 CBDMA channels: - # ./usertools/dpdk-devbind.py -b vfio-pci 0000:00:04.0,0000:00:04.1 + For example, bind 2 CBDMA channels: + # ./usertools/dpdk-devbind.py -b vfio-pci 0000:00:04.0,0000:00:04.1 -Test Case 1: loopback packed ring all path cbdma test payload check with server mode and multi-queues ------------------------------------------------------------------------------------------------------ +Test Case 1: Loopback packed ring all path multi-queues payload check with server mode and cbdma enable +------------------------------------------------------------------------------------------------------- This case tests the payload is valid after forwading large chain packets in loopback vhost-user/virtio-user packed ring -all path multi-queues with server mode when vhost uses the asynchronous enqueue operations with CBDMA channels. Both -iova as VA and PA mode test. +all path multi-queues with server mode when vhost uses the asynchronous operations with CBDMA channels. Both iova as VA and PA mode test. 1. Bind 8 CBDMA channel to vfio-pci, as common step 1. 2. Launch vhost by below command:: - # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 10-18 -n 4 \ + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 10-14 -n 4 \ -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 'eth_vhost0,iface=vhost-net0,queues=8,client=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq6;txq7]' \ - --iova=va -- -i --nb-cores=5 --rxq=8 --txq=8 --txd=1024 --rxd=1024 \ - --lcore-dma=[lcore11@0000:00:04.0,lcore11@0000:00:04.7,lcore12@0000:00:04.1,lcore12@0000:00:04.2,lcore12@0000:00:04.3,lcore13@0000:00:04.2,lcore13@0000:00:04.3,lcore13@0000:00:04.4,lcore14@0000:00:04.2,lcore14@0000:00:04.3,lcore14@0000:00:04.4,lcore14@0000:00:04.5,lcore15@0000:00:04.0,lcore15@0000:00:04.1,lcore15@0000:00:04.2,lcore15@0000:00:04.3,lcore15@0000:00:04.4,lcore15@0000:00:04.5,lcore15@0000:00:04.6,lcore15@0000:00:04.7] + --vdev 'eth_vhost0,iface=vhost-net0,queues=8,client=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \ + --iova=va -- -i --nb-cores=4 --rxq=8 --txq=8 --txd=1024 --rxd=1024 \ + --lcore-dma=[lcore11@0000:00:04.0,lcore11@0000:00:04.1,lcore12@0000:00:04.2,lcore12@0000:00:04.3,lcore13@0000:00:04.4,lcore13@0000:00:04.5,lcore14@0000:00:04.6,lcore14@0000:00:04.7] 3. Launch virtio-user with packed ring mergeable inorder path:: - # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 30,31 -n 4 --file-prefix=virtio-user0 --no-pci \ + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-6 -n 4 --file-prefix=virtio-user0 --no-pci \ --vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=./vhost-net0,queues=8,mrg_rxbuf=1,in_order=1,packed_vq=1,server=1 \ - -- -i --nb-cores=1 --rxq=8 --txq=8 --txd=1024 --rxd=1024 + -- -i --nb-cores=4 --rxq=8 --txq=8 --txd=1024 --rxd=1024 testpmd>set fwd csum testpmd>start @@ -119,9 +118,9 @@ iova as VA and PA mode test. 8. Quit and relaunch virtio with packed ring mergeable path as below:: - # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 30,31 -n 4 --file-prefix=virtio-user0 --no-pci \ + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-6 -n 4 --file-prefix=virtio-user0 --no-pci \ --vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=./vhost-net0,queues=8,mrg_rxbuf=1,in_order=0,packed_vq=1,server=1 \ - -- -i --nb-cores=1 --rxq=8 --txq=8 --txd=1024 --rxd=1024 + -- -i --nb-cores=4 --rxq=8 --txq=8 --txd=1024 --rxd=1024 testpmd>set fwd csum testpmd>start @@ -129,9 +128,9 @@ iova as VA and PA mode test. 10. Quit and relaunch virtio with packed ring non-mergeable path as below:: - # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 30,31 -n 4 --file-prefix=virtio-user0 --no-pci \ + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-6 -n 4 --file-prefix=virtio-user0 --no-pci \ --vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=./vhost-net0,queues=8,mrg_rxbuf=0,in_order=0,packed_vq=1,server=1 \ - -- -i --nb-cores=1 --rxq=8 --txq=8 --txd=1024 --rxd=1024 + -- -i --nb-cores=4 --rxq=8 --txq=8 --txd=1024 --rxd=1024 testpmd>set fwd csum testpmd>start @@ -151,9 +150,9 @@ iova as VA and PA mode test. 15. Quit and relaunch virtio with packed ring inorder non-mergeable path as below:: - # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 30,31 -n 4 --file-prefix=virtio-user0 --no-pci \ + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-6 -n 4 --file-prefix=virtio-user0 --no-pci \ --vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=./vhost-net0,queues=8,mrg_rxbuf=0,in_order=1,packed_vq=1,server=1 \ - -- -i --nb-cores=1 --rxq=8 --txq=8 --txd=1024 --rxd=1024 + -- -i --nb-cores=4 --rxq=8 --txq=8 --txd=1024 --rxd=1024 testpmd>set fwd csum testpmd>start @@ -161,9 +160,9 @@ iova as VA and PA mode test. 17. Quit and relaunch virtio with packed ring vectorized path as below:: - # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 30,31 -n 4 --file-prefix=virtio-user0 --no-pci --force-max-simd-bitwidth=512 \ + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-6 -n 4 --file-prefix=virtio-user0 --no-pci --force-max-simd-bitwidth=512 \ --vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=./vhost-net0,queues=8,mrg_rxbuf=0,in_order=1,packed_vq=1,vectorized=1,server=1 \ - -- -i --nb-cores=1 --rxq=8 --txq=8 --txd=1024 --rxd=1024 + -- -i --nb-cores=4 --rxq=8 --txq=8 --txd=1024 --rxd=1024 testpmd>set fwd csum testpmd>start @@ -171,9 +170,9 @@ iova as VA and PA mode test. 19. Quit and relaunch virtio with packed ring vectorized path and ring size is not power of 2 as below:: - # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 30,31 -n 4 --file-prefix=virtio-user0 --no-pci --force-max-simd-bitwidth=512 \ + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-6 -n 4 --file-prefix=virtio-user0 --no-pci --force-max-simd-bitwidth=512 \ --vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=./vhost-net0,queues=8,mrg_rxbuf=0,in_order=1,packed_vq=1,vectorized=1,queue_size=1025,server=1 \ - -- -i --nb-cores=1 --rxq=8 --txq=8 --txd=1025 --rxd=1025 + -- -i --nb-cores=4 --rxq=8 --txq=8 --txd=1025 --rxd=1025 testpmd>set fwd csum testpmd>start @@ -181,26 +180,25 @@ iova as VA and PA mode test. 21. Quit and relaunch vhost w/ iova=pa:: - # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 10-18 -n 4 \ + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 10-14 -n 4 \ -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 'eth_vhost0,iface=vhost-net0,queues=8,client=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq6;txq7]' \ - --iova=pa -- -i --nb-cores=5 --rxq=8 --txq=8 --txd=1024 --rxd=1024 \ - --lcore-dma=[lcore11@0000:00:04.0,lcore11@0000:00:04.7,lcore12@0000:00:04.1,lcore12@0000:00:04.2,lcore12@0000:00:04.3,lcore13@0000:00:04.2,lcore13@0000:00:04.3,lcore13@0000:00:04.4,lcore14@0000:00:04.2,lcore14@0000:00:04.3,lcore14@0000:00:04.4,lcore14@0000:00:04.5,lcore15@0000:00:04.0,lcore15@0000:00:04.1,lcore15@0000:00:04.2,lcore15@0000:00:04.3,lcore14@0000:00:04.4,lcore14@0000:00:04.5,lcore15@0000:00:04.6,lcore15@0000:00:04.7] + --vdev 'eth_vhost0,iface=vhost-net0,queues=8,client=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq6;txq7;rxq0;rxq1;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \ + --iova=pa -- -i --nb-cores=4 --rxq=8 --txq=8 --txd=1024 --rxd=1024 \ + --lcore-dma=[lcore11@0000:00:04.0,lcore11@0000:00:04.1,lcore12@0000:00:04.2,lcore12@0000:00:04.3,lcore13@0000:00:04.4,lcore13@0000:00:04.5,lcore14@0000:00:04.6,lcore14@0000:00:04.7] 22. Rerun steps 3-6. -Test Case 2: loopback split ring all path cbdma test payload check with server mode and multi-queues ----------------------------------------------------------------------------------------------------- +Test Case 2: Loopback split ring all path multi-queues payload check with server mode and cbdma enable +------------------------------------------------------------------------------------------------------ This case tests the payload is valid after forwading large chain packets in loopback vhost-user/virtio-user split ring -all path multi-queues with server mode when vhost uses the asynchronous enqueue operations with CBDMA channels. Both -iova as VA and PA mode test. +all path multi-queues with server mode when vhost uses the asynchronous operations with CBDMA channels. Both iova as VA and PA mode test. 1. Bind 3 CBDMA channel to vfio-pci, as common step 1. 2. Launch vhost by below command:: # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 10-18 -n 4 -a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 \ - --vdev 'eth_vhost0,iface=vhost-net0,queues=8,client=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \ + --vdev 'eth_vhost0,iface=vhost-net0,queues=8,client=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \ --iova=va -- -i --nb-cores=5 --rxq=8 --txq=8 --txd=1024 --rxd=1024 \ --lcore-dma=[lcore11@0000:00:04.0,lcore12@0000:00:04.0,lcore13@0000:00:04.1,lcore13@0000:00:04.2,lcore14@0000:00:04.1,lcore14@0000:00:04.2,lcore15@0000:00:04.1,lcore15@0000:00:04.2] @@ -285,23 +283,23 @@ iova as VA and PA mode test. 19. Quit and relaunch vhost w/ iova=pa:: # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 10-18 -n 4 -a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 \ - --vdev 'eth_vhost0,iface=vhost-net0,queues=8,client=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;txq6]' \ + --vdev 'eth_vhost0,iface=vhost-net0,queues=8,client=1,dmas=[txq0;txq1;txq2;txq3;txq4;txq5;rxq2;rxq3;rxq4;rxq5;rxq6;rxq7]' \ --iova=pa -- -i --nb-cores=5 --rxq=8 --txq=8 --txd=1024 --rxd=1024 \ --lcore-dma=[lcore11@0000:00:04.0,lcore12@0000:00:04.0,lcore13@0000:00:04.1,lcore13@0000:00:04.2,lcore14@0000:00:04.1,lcore14@0000:00:04.2,lcore15@0000:00:04.1,lcore15@0000:00:04.2] 20. Rerun steps 3-6. -Test Case 3: loopback split ring large chain packets stress test with server mode and cbdma enqueue ---------------------------------------------------------------------------------------------------- +Test Case 3: Loopback split ring large chain packets stress test with server mode and cbdma enable +-------------------------------------------------------------------------------------------------- This is a stress test case about forwading large chain packets in loopback vhost-user/virtio-user split ring with server mode -when vhost uses the asynchronous enqueue operations with CBDMA channels. Both iova as VA and PA mode test. +when vhost uses the asynchronous operations with CBDMA channels. Both iova as VA and PA mode test. 1. Bind 1 CBDMA channel to vfio-pci, as common step 1. 2. Launch vhost by below command:: # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-3 -n 4 -a 0000:00:04.0 \ - --vdev 'eth_vhost0,iface=vhost-net0,queues=1,client=1,dmas=[txq0]' --iova=va -- -i --nb-cores=1 --mbuf-size=65535 --lcore-dma=[lcore3@0000:00:04.0] + --vdev 'eth_vhost0,iface=vhost-net0,queues=1,client=1,dmas=[txq0;rxq0]' --iova=va -- -i --nb-cores=1 --mbuf-size=65535 --lcore-dma=[lcore3@0000:00:04.0] 3. Launch virtio and start testpmd:: @@ -319,21 +317,21 @@ when vhost uses the asynchronous enqueue operations with CBDMA channels. Both io 5. Stop and quit vhost testpmd and relaunch vhost with iova=pa:: # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-3 -n 4 -a 0000:00:04.0 \ - --vdev 'eth_vhost0,iface=vhost-net0,queues=1,client=1,dmas=[txq0]' --iova=pa -- -i --nb-cores=1 --mbuf-size=65535 --lcore-dma=[lcore3@0000:00:04.0] + --vdev 'eth_vhost0,iface=vhost-net0,queues=1,client=1,dmas=[txq0;rxq0]' --iova=pa -- -i --nb-cores=1 --mbuf-size=65535 --lcore-dma=[lcore3@0000:00:04.0] 6. Rerun steps 4. -Test Case 4: loopback packed ring large chain packets stress test with server mode and cbdma enqueue ----------------------------------------------------------------------------------------------------- +Test Case 4: Loopback packed ring large chain packets stress test with server mode and cbdma enable +--------------------------------------------------------------------------------------------------- This is a stress test case about forwading large chain packets in loopback vhost-user/virtio-user packed ring with server mode -when vhost uses the asynchronous enqueue operations with dsa dpdk driver. Both iova as VA and PA mode test. +when vhost uses the asynchronous operations with dsa dpdk driver. Both iova as VA and PA mode test. 1. Bind 1 CBDMA channel to vfio-pci, as common step 1. 2. Launch vhost by below command:: # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-3 -n 4 -a 0000:00:04.0 \ - --vdev 'eth_vhost0,iface=vhost-net0,queues=1,dmas=[txq0],client=1' --iova=va -- -i --nb-cores=1 --mbuf-size=65535 --lcore-dma=[lcore3@0000:00:04.0] + --vdev 'eth_vhost0,iface=vhost-net0,queues=1,dmas=[txq0;rxq0],client=1' --iova=va -- -i --nb-cores=1 --mbuf-size=65535 --lcore-dma=[lcore3@0000:00:04.0] 3. Launch virtio and start testpmd::