149. vm2vm vhost-user/virtio-pmd test plan

This test plan includes vm2vm vhost-user/virtio-pmd(0.95) mergeable ,normal and vector_rx path test, and vm2vm vhost/virtio-pmd(1.0) mergeable, normal and vector_rx path test. Specially, two mergeable path test check the payload of each packets are valid by using pdump.

149.1. Prerequisites

Enable pcap lib in dpdk code and recompile:

--- a/config/common_base
+++ b/config/common_base
@@ -492,7 +492,7 @@ CONFIG_RTE_LIBRTE_PMD_NULL=y
 #
 # Compile software PMD backed by PCAP files
 #
-CONFIG_RTE_LIBRTE_PMD_PCAP=n
+CONFIG_RTE_LIBRTE_PMD_PCAP=y

149.2. Test flow

Virtio-pmd <-> Vhost-user <-> Testpmd <-> Vhost-user <-> Virtio-pmd

149.3. Test Case 1: VM2VM vhost-user/virtio-pmd with vector_rx path

  1. Bind one physical nic port to igb_uio, then launch the testpmd by below commands:

     rm -rf vhost-net*
./testpmd -c 0xc0000 -n 4 --socket-mem 2048,2048 --legacy-mem --no-pci --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,queues=1' --vdev 'net_vhost1,iface=vhost-net1,queues=1'  -- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM1 and VM2, mrg_rxbuf=off to disable mergeable:

    qemu-system-x86_64 -name us-vhost-vm0 \
 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
 -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16-1.img  \
 -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6004-:22 \
 -chardev socket,id=char0,path=./vhost-net0 -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \
 -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,mrg_rxbuf=off,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on \
 -vnc :12 -daemonize

qemu-system-x86_64 -name us-vhost-vm1 \
 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
 -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16-2.img \
 -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6005-:22 \
 -chardev socket,id=char1,path=./vhost-net1 -netdev type=vhost-user,id=mynet2,chardev=char1,vhostforce \
 -device virtio-net-pci,mac=52:54:00:00:00:02,netdev=mynet2,mrg_rxbuf=off,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on  \
 -vnc :11 -daemonize

  3. On VM1, bind vdev with igb_uio driver,then run testpmd, set rxonly for virtio1:

    ./testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024
testpmd>set fwd rxonly
testpmd>start

  4. On VM2, bind vdev with igb_uio driver,then run testpmd, set txonly for virtio2 and send 64B packets:

    ./testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024
testpmd>set fwd txonly
testpmd>set txpkts 64
testpmd>start tx_first 32

  5. Check the performance at vhost testpmd to see the tx/rx rate with 64B packet size:

    testpmd>show port stats all
xxxxx
Throughput (since last show)
RX-pps:            xxx
TX-pps:            xxx

149.4. Test Case 2: VM2VM vhost-user/virtio-pmd with normal path

  1. Bind one physical nic port to igb_uio, then launch the testpmd by below commands:

     rm -rf vhost-net*
./testpmd -c 0xc0000 -n 4 --socket-mem 2048,2048 --legacy-mem --no-pci --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,queues=1' --vdev 'net_vhost1,iface=vhost-net1,queues=1'  -- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM1 and VM2, mrg_rxbuf=off to disable mergeable:

    qemu-system-x86_64 -name us-vhost-vm0 \
 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
 -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16-1.img  \
 -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6004-:22 \
 -chardev socket,id=char0,path=./vhost-net0 -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \
 -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,mrg_rxbuf=off,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on \
 -vnc :12 -daemonize

qemu-system-x86_64 -name us-vhost-vm1 \
 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
 -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16-2.img \
 -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6005-:22 \
 -chardev socket,id=char1,path=./vhost-net1 -netdev type=vhost-user,id=mynet2,chardev=char1,vhostforce \
 -device virtio-net-pci,mac=52:54:00:00:00:02,netdev=mynet2,mrg_rxbuf=off,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on  \
 -vnc :11 -daemonize

  3. On VM1, bind vdev with igb_uio driver,then run testpmd, set rxonly for virtio1

    ./testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txd=1024 --rxd=1024
testpmd>set fwd rxonly
testpmd>start

  4. On VM2, bind vdev with igb_uio driver,then run testpmd, set rxonly for virtio2 and send 64B packets

    ./testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txd=1024 --rxd=1024
testpmd>set fwd txonly
testpmd>set txpkts 64
testpmd>start tx_first 32

  5. Check the performance at vhost testpmd to see the tx/rx rate with 64B packet size:

    testpmd>show port stats all
xxxxx
Throughput (since last show)
RX-pps:            xxx
TX-pps:            xxx

149.5. Test Case 3: VM2VM vhost-user/virtio1.0-pmd with vector_rx path

  1. Bind one physical nic port to igb_uio, then launch the testpmd by below commands:

     rm -rf vhost-net*
./testpmd -c 0xc0000 -n 4 --socket-mem 2048,2048 --legacy-mem --no-pci --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,queues=1' --vdev 'net_vhost1,iface=vhost-net1,queues=1'  -- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM1 and VM2, note add “disable-modern=false” to enable virtio 1.0:

    qemu-system-x86_64 -name us-vhost-vm1 \
 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
 -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16-1.img  \
 -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6004-:22 \
 -chardev socket,id=char0,path=./vhost-net0 -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \
 -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,disable-modern=false,mrg_rxbuf=off,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on \
 -vnc :12 -daemonize

qemu-system-x86_64 -name us-vhost-vm2 \
 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
 -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16-2.img \
 -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6005-:22 \
 -chardev socket,id=char1,path=./vhost-net1 -netdev type=vhost-user,id=mynet2,chardev=char1,vhostforce \
 -device virtio-net-pci,mac=52:54:00:00:00:02,netdev=mynet2,disable-modern=false,mrg_rxbuf=off,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on  \
 -vnc :11 -daemonize

  3. On VM1, bind vdev with igb_uio driver,then run testpmd, set rxonly for virtio1

    ./testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024
testpmd>set fwd rxonly
testpmd>start

  4. On VM2, bind vdev with igb_uio driver,then run testpmd, set txonly for virtio2

    ./testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024
testpmd>set fwd txonly
testpmd>set txpkts 64
testpmd>start tx_first 32

  5. Check the performance at vhost testpmd to see the tx/rx rate with 64B packet size:

    testpmd>show port stats all
xxxxx
Throughput (since last show)
RX-pps:            xxx
TX-pps:            xxx

149.6. Test Case 4: VM2VM vhost-user/virtio1.0-pmd with normal path

  1. Bind one physical nic port to igb_uio, then launch the testpmd by below commands:

     rm -rf vhost-net*
./testpmd -c 0xc0000 -n 4 --socket-mem 2048,2048 --legacy-mem --no-pci --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,queues=1' --vdev 'net_vhost1,iface=vhost-net1,queues=1'  -- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM1 and VM2, note add “disable-modern=false” to enable virtio 1.0:

    qemu-system-x86_64 -name us-vhost-vm1 \
 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
 -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16-1.img  \
 -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6004-:22 \
 -chardev socket,id=char0,path=./vhost-net0 -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \
 -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,disable-modern=false,mrg_rxbuf=off,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on \
 -vnc :12 -daemonize

qemu-system-x86_64 -name us-vhost-vm2 \
 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
 -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16-2.img \
 -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6005-:22 \
 -chardev socket,id=char1,path=./vhost-net1 -netdev type=vhost-user,id=mynet2,chardev=char1,vhostforce \
 -device virtio-net-pci,mac=52:54:00:00:00:02,netdev=mynet2,disable-modern=false,mrg_rxbuf=off,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on  \
 -vnc :11 -daemonize

  3. On VM1, bind vdev with igb_uio driver,then run testpmd, set rxonly for virtio1

    ./testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txd=1024 --rxd=1024
testpmd>set fwd rxonly
testpmd>start

  4. On VM2, bind vdev with igb_uio driver,then run testpmd, set txonly for virtio2

    ./testpmd -c 0x3 -n 4 -- -i --tx-offloads=0x00 --enable-hw-vlan-strip --txd=1024 --rxd=1024
testpmd>set fwd txonly
testpmd>set txpkts 64
testpmd>start tx_first 32

  5. Check the performance at vhost testpmd to see the tx/rx rate with 64B packet size:

    testpmd>show port stats all
xxxxx
Throughput (since last show)
RX-pps:            xxx
TX-pps:            xxx

149.7. Test Case 5: VM2VM vhost-user/virtio-pmd mergeable path with payload valid check

  1. Bind virtio with igb_uio driver, launch the testpmd by below commands:

    ./testpmd -c 0xc0000 -n 4 --socket-mem 2048,2048 --legacy-mem --no-pci --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,queues=1' --vdev 'net_vhost1,iface=vhost-net1,queues=1'  -- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM1 and VM2, mrg_rxbuf=on to enable mergeable path:

    qemu-system-x86_64 -name us-vhost-vm1 \
 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
 -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16-1.img  \
 -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6004-:22 \
 -chardev socket,id=char0,path=./vhost-net0 -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \
 -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,mrg_rxbuf=on,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on \
 -vnc :12 -daemonize

qemu-system-x86_64 -name us-vhost-vm2 \
 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
 -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16.img \
 -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6003-:22 \
 -chardev socket,id=char1,path=./vhost-net1 -netdev type=vhost-user,id=mynet2,chardev=char1,vhostforce \
 -device virtio-net-pci,mac=52:54:00:00:00:02,netdev=mynet2,mrg_rxbuf=on,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on \
 -vnc :11 -daemonize

  3. On VM1, enable pcap lib in dpdk code and recompile:

    diff --git a/config/common_base b/config/common_base
index 6b96e0e80..0f7d22f22 100644
--- a/config/common_base
+++ b/config/common_base
@@ -492,7 +492,7 @@ CONFIG_RTE_LIBRTE_PMD_NULL=y
 #
 # Compile software PMD backed by PCAP files
 #
-CONFIG_RTE_LIBRTE_PMD_PCAP=n
+CONFIG_RTE_LIBRTE_PMD_PCAP=y

  4. Bind virtio with igb_uio driver,then run testpmd, set rxonly mode for virtio-pmd on VM1:

    ./testpmd -c 0x3 -n 4 --file-prefix=test -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
testpmd>set fwd rxonly
testpmd>start

  5. Bootup pdump in VM1:

    ./x86_64-native-linuxapp-gcc/app/dpdk-pdump -v --file-prefix=test -- --pdump  'port=0,queue=*,rx-dev=/root/pdump-rx.pcap,mbuf-size=8000'

  6. On VM2, bind virtio with igb_uio driver,then run testpmd, config tx_packets to 8k length with chain mode:

    ./testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
testpmd>set fwd mac
testpmd>set txpkts 2000,2000,2000,2000

  7. Send ten packets with 8k length from virtio-pmd on VM2:

    testpmd>set burst 1
testpmd>start tx_first 10

  8. Check payload is correct in each dumped packets.

  9. Relaunch testpmd in VM1:

    ./testpmd -c 0x3 -n 4 --file-prefix=test -- -i --txd=1024 --rxd=1024
testpmd>set fwd rxonly
testpmd>start

  10. Bootup pdump in VM1:

    ./x86_64-native-linuxapp-gcc/app/dpdk-pdump -v --file-prefix=test -- --pdump  'port=0,queue=*,rx-dev=/root/pdump-rx-small.pcap,mbuf-size=8000'

  11. Relaunch testpmd on VM2, send ten 64B packets from virtio-pmd on VM2:

    ./testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>set burst 1
testpmd>start tx_first 10

  12. Check payload is correct in each dumped packets.

149.8. Test Case 6: VM2VM vhost-user/virtio1.0-pmd mergeable path with payload valid check

  1. Bind virtio with igb_uio driver, launch the testpmd by below commands:

    ./testpmd -c 0xc0000 -n 4 --socket-mem 2048,2048 --legacy-mem --no-pci --file-prefix=vhost --vdev 'net_vhost0,iface=vhost-net0,queues=1' --vdev 'net_vhost1,iface=vhost-net1,queues=1'  -- -i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch VM1 and VM2, mrg_rxbuf=on to enable mergeable path:

    qemu-system-x86_64 -name us-vhost-vm1 \
 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
 -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16-1.img  \
 -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6004-:22 \
 -chardev socket,id=char0,path=./vhost-net0 -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \
 -device virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1,disable-modern=false,mrg_rxbuf=on,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on \
 -vnc :12 -daemonize

qemu-system-x86_64 -name us-vhost-vm2 \
 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc \
 -smp cores=2,sockets=1 -drive file=/home/osimg/ubuntu16.img \
 -monitor unix:/tmp/vm2_monitor.sock,server,nowait -net nic,vlan=2,macaddr=00:00:00:08:e8:aa,addr=1f -net user,vlan=2,hostfwd=tcp:127.0.0.1:6003-:22 \
 -chardev socket,id=char1,path=./vhost-net1 -netdev type=vhost-user,id=mynet2,chardev=char1,vhostforce \
 -device virtio-net-pci,mac=52:54:00:00:00:02,netdev=mynet2,disable-modern=false,mrg_rxbuf=on,csum=on,gso=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on \
 -vnc :11 -daemonize

  3. On VM1, enable pcap lib in dpdk code and recompile:

    diff --git a/config/common_base b/config/common_base
index 6b96e0e80..0f7d22f22 100644
--- a/config/common_base
+++ b/config/common_base
@@ -492,7 +492,7 @@ CONFIG_RTE_LIBRTE_PMD_NULL=y
 #
 # Compile software PMD backed by PCAP files
 #
-CONFIG_RTE_LIBRTE_PMD_PCAP=n
+CONFIG_RTE_LIBRTE_PMD_PCAP=y

  4. Bind virtio with igb_uio driver,then run testpmd, set rxonly mode for virtio-pmd on VM1:

    ./testpmd -c 0x3 -n 4 --file-prefix=test -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
testpmd>set fwd rxonly
testpmd>start

  5. Bootup pdump in VM1:

    ./x86_64-native-linuxapp-gcc/app/dpdk-pdump -v --file-prefix=test -- --pdump  'port=0,queue=*,rx-dev=/root/pdump-rx.pcap,mbuf-size=8000'

  6. On VM2, bind virtio with igb_uio driver,then run testpmd, config tx_packets to 8k length with chain mode:

    ./testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
testpmd>set fwd mac
testpmd>set txpkts 2000,2000,2000,2000

  7. Send ten packets from virtio-pmd on VM2:

    testpmd>set burst 1
testpmd>start tx_first 10

  8. Check payload is correct in each dumped packets.

  9. Relaunch testpmd in VM1:

    ./testpmd -c 0x3 -n 4 --file-prefix=test -- -i --txd=1024 --rxd=1024
testpmd>set fwd rxonly
testpmd>start

  10. Bootup pdump in VM1:

    ./x86_64-native-linuxapp-gcc/app/dpdk-pdump -v --file-prefix=test -- --pdump  'port=0,queue=*,rx-dev=/root/pdump-rx-small.pcap'

  11. Relaunch testpmd On VM2, send ten 64B packets from virtio-pmd on VM2:

    ./testpmd -c 0x3 -n 4 -- -i --txd=1024 --rxd=1024 --max-pkt-len=9600
testpmd>set fwd mac
testpmd>set burst 1
testpmd>start tx_first 10

  12. Check payload is correct in each dumped packets.

149.9. Test Case 7: vm2vm vhost-user/virtio1.1-pmd mergeable path test with payload check

  1. Launch testpmd by below command:

    rm -rf vhost-net*
./testpmd -l 1-2 -n 4 --socket-mem 1024,1024 --no-pci \
--vdev 'eth_vhost0,iface=vhost-net,queues=1' --vdev 'eth_vhost1,iface=vhost-net1,queues=1' -- \
-i --nb-cores=1 --txd=1024 --rxd=1024
testpmd>set fwd mac
testpmd>start

  2. Launch virtio-user1 by below command:

    ./testpmd -n 4 -l 7-8 --socket-mem 1024,1024 \
--no-pci --file-prefix=virtio1 \
--vdev=net_virtio_user1,mac=00:01:02:03:04:05,path=./vhost-net1,queues=1,packed_vq=1,mrg_rxbuf=1,in_order=0 \
-- -i --nb-cores=1 --txd=1024 --rxd=1024 --max-pkt-len=9600
testpmd>set fwd rxonly
testpmd>start

  3. Attach pdump secondary process to primary process by same file-prefix:

    ./x86_64-native-linuxapp-gcc/app/dpdk-pdump -v --file-prefix=virtio1 -- --pdump 'device_id=net_virtio_user1,queue=*,rx-dev=/root/pdump-rx.pcap,mbuf-size=8000'

  4. Launch virtio-user0 and send 8k length packets:

    ./testpmd -n 4 -l 5-6 --socket-mem 1024,1024 \
--no-pci --file-prefix=virtio \
--vdev=net_virtio_user0,mac=00:01:02:03:04:05,path=./vhost-net,queues=1,packed_vq=1,mrg_rxbuf=1,in_order=0 \
-- -i --nb-cores=1 --txd=1024 --rxd=1024 --max-pkt-len=9600
testpmd>set txpkts 2000,2000,2000,2000
testpmd>set burst 1
testpmd>start tx_first 10

  5. Check payload is correct in each dumped packets.