230. vm2vm vhost-user/virtio-net test plan

230.1. Description

This test plan test several features in VM2VM topo: 1. Check Vhost tx offload (TSO) function by verifying the TSO/cksum in the TCP/IP stack and UFO/cksum in the IP stack with vm2vm split ring and packed ring vhost-user/virtio-net mergeable path. 2. Check the payload of large packet (larger than 1MB) is valid after forwarding packets with vm2vm split ring and packed ring vhost-user/virtio-net mergeable and non-mergeable path. Note: 1.For packed virtqueue virtio-net test, need qemu version > 4.2.0 and VM kernel version > v5.1. 2.For split virtqueue virtio-net with multi-queues server mode test, need qemu version > LTS 4.2.1, dut to old qemu exist reconnect issue when multi-queues test. 3.For PA mode, page by page mapping may exceed IOMMU’s max capability, better to use 1G guest hugepage.

230.2. Test flow

Virtio-net <-> Vhost <-> Testpmd <-> Vhost <-> Virtio-net

230.3. Test Case 1: VM2VM split ring vhost-user/virtio-net test with tcp traffic

  1. Launch the Vhost sample on socket 0 by below commands:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-4 -n 4 --no-pci --file-prefix=vhost \
--vdev 'net_vhost0,iface=vhost-net0,queues=1,tso=1' \
--vdev 'net_vhost1,iface=vhost-net1,queues=1,tso=1' \
-- -i --nb-cores=2 --txd=1024 --rxd=1024
testpmd>start

  2. Launch VM1 and VM2 on socket 1:

    taskset -c 32 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 1 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
-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 \
-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=off,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/huge,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=off,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 protocol:

    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 protocol:

    ifconfig ens5 1.1.1.8
arp -s 1.1.1.2 52:54:00:00:00:01

  5. Check the iperf performance with different packet size 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`

  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

230.4. Test Case 2: Check split ring virtio-net device capability

  1. Launch the Vhost sample by below commands:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-4 -n 4 --no-pci --file-prefix=vhost \
--vdev 'net_vhost0,iface=vhost-net0,queues=1,tso=1' \
--vdev 'net_vhost1,iface=vhost-net1,queues=1,tso=1' \
-- -i --nb-cores=2 --txd=1024 --rxd=1024
testpmd>start

  2. Launch VM1 and VM2,set TSO on in qemu command:

    qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 1 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
-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 \
-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

qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 1 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
-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. Check TSO offload status on for the Virtio-net driver on VM1 and VM2:

    Under VM1, run: `run ethtool -k ens3`
tx-tcp-segmentation: on
tx-tcp-ecn-segmentation: on
tx-tcp6-segmentation: on

Under VM2, run: `run ethtool -k ens3`
tx-tcp-segmentation: on
tx-tcp-ecn-segmentation: on
tx-tcp6-segmentation: on

230.5. Test Case 3: VM2VM packed ring vhost-user/virtio-net test with tcp traffic

  1. Launch the Vhost sample by below commands:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-4 -n 4 --no-pci --file-prefix=vhost \
--vdev 'net_vhost0,iface=vhost-net0,queues=1,tso=1' \
--vdev 'net_vhost1,iface=vhost-net1,queues=1,tso=1' \
-- -i --nb-cores=2 --txd=1024 --rxd=1024
testpmd>start

  2. Launch VM1 and VM2 with qemu:

    qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 1 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
-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 \
-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

qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 1 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
-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 protocol:

    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 protocol:

    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`

  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

230.6. Test Case 4: Check packed ring virtio-net device capability

  1. Launch the Vhost sample by below commands:

    rm -rf vhost-net*
./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 2-4 -n 4 --no-pci --file-prefix=vhost \
--vdev 'net_vhost0,iface=vhost-net0,queues=1,tso=1' \
--vdev 'net_vhost1,iface=vhost-net1,queues=1,tso=1' \
-- -i --nb-cores=2 --txd=1024 --rxd=1024
testpmd>start

  2. Launch VM1 and VM2 with qemu,set TSO on in qemu command:

    qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 1 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
-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 \
-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

qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 1 -m 4096 \
-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
-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. Check UFO and TSO offload status on for the Virtio-net driver on VM1 and VM2:

    Under VM1, run: `run ethtool -k ens3`
tx-tcp-segmentation: on
tx-tcp-ecn-segmentation: on
tx-tcp6-segmentation: on

Under VM2, run: `run ethtool -k ens3`
tx-tcp-segmentation: on
tx-tcp-ecn-segmentation: on
tx-tcp6-segmentation: on