Modify testplan format to new template. Signed-off-by: Wei Ling --- test_plans/vswitch_sample_cbdma_test_plan.rst | 172 +++++++++++++----- 1 file changed, 128 insertions(+), 44 deletions(-) diff --git a/test_plans/vswitch_sample_cbdma_test_plan.rst b/test_plans/vswitch_sample_cbdma_test_plan.rst index af2e62d1..679e3ee8 100644 --- a/test_plans/vswitch_sample_cbdma_test_plan.rst +++ b/test_plans/vswitch_sample_cbdma_test_plan.rst @@ -37,68 +37,140 @@ Vswitch sample test with vhost async data path test plan Description =========== -Vswitch sample can leverage IOAT to accelerate vhost async data-path from dpdk 20.11. This plan test -vhost DMA operation callbacks for CBDMA PMD and vhost async data-path in vhost sample. +Vswitch sample can leverage IOAT to accelerate vhost async data-path from dpdk 20.11. +This plan test vhost DMA operation callbacks for CBDMA PMD and vhost async data-path in vhost sample. From 20.11 to 21.02, only split ring support cbdma copy with vhost enqueue direction; from 21.05,packed ring also can support cbdma copy with vhost enqueue direction. +For more about dpdk-testpmd sample, please refer to the DPDK docments: +https://doc.dpdk.org/guides/testpmd_app_ug/run_app.html + +For virtio-user vdev parameter, you can refer to the DPDK docments: +https://doc.dpdk.org/guides/nics/virtio.html#virtio-paths-selection-and-usage. + +For more about dpdk-vhost sample, please refer to the DPDK docments: +https://doc.dpdk.org/guides/sample_app_ug/vhost.html + Prerequisites ============= +Topology +-------- + Test flow: TG-->NIC-->VSwitch-->Virtio-->VSwitch-->NIC-->TG + +Hardware +-------- + Supportted NICs: ALL + +Software +-------- + Trex:http://trex-tgn.cisco.com/trex/release/v2.26.tar.gz + +General set up +-------------- +1. Compile DPDK:: + + # CC=gcc meson --werror -Denable_kmods=True -Dlibdir=lib -Dexamples=all --default-library= + # ninja -C -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 + + 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 + +Test case +========= + +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 + + For example, Bind 1 NIC port and 2 CBDMA channels:: + ./usertools/dpdk-devbind.py -b vfio-pci 0000:00:18.0 + ./usertools/dpdk-devbind.py -b vfio-pci 0000:00:04.0,0000:00:04.1 + +2. Inject imix 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 Case1: PVP performance check with CBDMA channel using vhost async driver -============================================================================= +----------------------------------------------------------------------------- +This case uses vhost, testpmd and Traffic Generator(For example, Trex) to test performance with 1 CBDMA channel using vhost async driver. -1. Bind physical port to vfio-pci and CBDMA channel to vfio-pci. +1. Bind 1 NIC port and 1 CBDMA channel to vfio-pci, as common step 1. 2. On host, launch dpdk-vhost by below command:: - ./x86_64-native-linuxapp-gcc/examples/dpdk-vhost -l 31-32 -n 4 -- \ - -p 0x1 --mergeable 1 --vm2vm 1 --dma-type ioat --stats 1 --socket-file /tmp/vhost-net --dmas [txd0@0000:00:04.0] --client --total-num-mbufs 600000 + # ./x86_64-native-linuxapp-gcc/examples/dpdk-vhost -l 31-32 -n 4 -- -p 0x1 --mergeable 1 --vm2vm 1 --dma-type ioat \ + --stats 1 --socket-file /tmp/vhost-net --dmas [txd0@0000:00:04.0] --client --total-num-mbufs 600000 3. Launch virtio-user with packed ring:: - ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-30 -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,mrg_rxbuf=0,in_order=1,vectorized=1,packed_vq=1,server=1 -- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-30 -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,mrg_rxbuf=0,in_order=1,vectorized=1,packed_vq=1,server=1 \ + -- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 4. Start pkts from virtio-user side to let vswitch know the mac addr:: testpmd>set fwd mac testpmd>start tx_first -5. Inject pkts (packets length=64...1518) separately with dest_mac=virtio_mac_address (specific in above cmd with 00:11:22:33:44:10) to NIC using packet generator, record pvp (PG>nic>vswitch>virtio-user>vswitch>nic>PG) performance number can get expected. +5. Send imix packets [64,1518] from packet generator as common step2, and check the throughput can get expected data. 6. Quit and re-launch virtio-user with packed ring size not power of 2:: - ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-30 -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,mrg_rxbuf=0,in_order=1,vectorized=1,packed_vq=1,server=1,queue_size=1025 -- -i --rxq=1 --txq=1 --txd=1025 --rxd=1025 --nb-cores=1 + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-30 -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,mrg_rxbuf=0,in_order=1,vectorized=1,packed_vq=1,server=1,queue_size=1025 \ + -- -i --rxq=1 --txq=1 --txd=1025 --rxd=1025 --nb-cores=1 7. Re-test step 4-5, record performance of different packet length. 8. Quit and re-launch virtio-user with split ring:: - ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-30 -n 4 --no-pci --file-prefix=testpmd0 \ - --vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=1,mrg_rxbuf=0,in_order=1,vectorized=1,server=1 -- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-30 -n 4 --no-pci --file-prefix=testpmd0 \ + --vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net,queues=1,mrg_rxbuf=0,in_order=1,vectorized=1,server=1 \ + -- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 9. Re-test step 4-5, record performance of different packet length. Test Case2: PVP test with two VM and two CBDMA channels using vhost async driver -================================================================================= +-------------------------------------------------------------------------------- +This case uses vhost, testpmd and Traffic Generator(For example, Trex) to test 2 VMs performance with 2 CBDMA channels using vhost async driver. -1. Bind one physical ports to vfio-pci and two CBDMA channels to vfio-pci. +1. Bind 1 NIC port and 2 CBDMA channel to vfio-pci, as common step 1. 2. On host, launch dpdk-vhost by below command:: - ./x86_64-native-linuxapp-gcc/examples/dpdk-vhost -l 26-28 -n 4 -- \ - -p 0x1 --mergeable 1 --vm2vm 1 --dma-type ioat --stats 1 --socket-file /tmp/vhost-net0 --socket-file /tmp/vhost-net1 --dmas [txd0@0000:00:01.0,txd1@0000:00:01.1] --client--total-num-mbufs 600000 + # ./x86_64-native-linuxapp-gcc/examples/dpdk-vhost -l 26-28 -n 4 -- -p 0x1 --mergeable 1 --vm2vm 1 --dma-type ioat \ + --stats 1 --socket-file /tmp/vhost-net0 --socket-file /tmp/vhost-net1 --dmas [txd0@0000:00:01.0,txd1@0000:00:01.1] --client--total-num-mbufs 600000 3. launch two virtio-user ports:: - ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-30 -n 4 --no-pci --file-prefix=testpmd0 \ - --vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net0,queues=1,server=1,mrg_rxbuf=1,in_order=0,packed_vq=1 -- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-30 -n 4 --no-pci --file-prefix=testpmd0 \ + --vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net0,queues=1,server=1,mrg_rxbuf=1,in_order=0,packed_vq=1 \ + -- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 - ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 31-32 -n 4 --no-pci --file-prefix=testpmd1 \ - --vdev=net_virtio_user0,mac=00:11:22:33:44:11,path=/tmp/vhost-net1,queues=1,server=1,mrg_rxbuf=1,in_order=1,vectorized=1 -- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 31-32 -n 4 --no-pci --file-prefix=testpmd1 \ + --vdev=net_virtio_user0,mac=00:11:22:33:44:11,path=/tmp/vhost-net1,queues=1,server=1,mrg_rxbuf=1,in_order=1,vectorized=1 \ + -- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 4. Start pkts from two virtio-user side individually to let vswitch know the mac addr:: @@ -107,7 +179,7 @@ Test Case2: PVP test with two VM and two CBDMA channels using vhost async driver testpmd1>start tx_first testpmd1>start tx_first -5. Inject IMIX packets (64b...1518b) with dest_mac=virtio_mac_address (00:11:22:33:44:10 and 00:11:22:33:44:11) to NIC using packet generator,record performance number can get expected from Packet generator rx side. +5. Send imix packets [64,1518] from packet generator as common step2, and check the throughput can get expected data. 6. Stop dpdk-vhost side and relaunch it with same cmd as step2. @@ -121,22 +193,25 @@ Test Case2: PVP test with two VM and two CBDMA channels using vhost async driver 8. Inject IMIX packets (64b...1518b) with dest_mac=virtio_mac_address (00:11:22:33:44:10 and 00:11:22:33:44:11) to NIC using packet generator, ensure get same throughput as step5. Test Case3: VM2VM forwarding test with two CBDMA channels -========================================================= +--------------------------------------------------------- +This case uses vhost, testpmd to test vm to vm forwarding packets with 2 CBDMA channels. -1.Bind one physical ports to vfio-pci and two CBDMA channels to vfio-pci. +1. Bind 1 NIC port and 2 CBDMA channel to vfio-pci, as common step 1. 2. On host, launch dpdk-vhost by below command:: - ./x86_64-native-linuxapp-gcc/examples/dpdk-vhost -l 26-28 -n 4 -- -p 0x1 --mergeable 1 --vm2vm 1 --dma-type ioat \ + # ./x86_64-native-linuxapp-gcc/examples/dpdk-vhost -l 26-28 -n 4 -- -p 0x1 --mergeable 1 --vm2vm 1 --dma-type ioat \ --socket-file /tmp/vhost-net0 --socket-file /tmp/vhost-net1 --dmas [txd0@0000:00:04.0,txd1@0000:00:04.1] --client --total-num-mbufs 600000 3. Launch virtio-user:: - ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-30 -n 4 --no-pci --file-prefix=testpmd0 \ - --vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net0,queues=1,server=1,mrg_rxbuf=1,in_order=0,packed_vq=1 -- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29-30 -n 4 --no-pci --file-prefix=testpmd0 \ + --vdev=net_virtio_user0,mac=00:11:22:33:44:10,path=/tmp/vhost-net0,queues=1,server=1,mrg_rxbuf=1,in_order=0,packed_vq=1 \ + -- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 31-32 -n 4 --no-pci --file-prefix=testpmd1 \ - --vdev=net_virtio_user0,mac=00:11:22:33:44:11,path=/tmp/vhost-net1,queues=1,server=1,mrg_rxbuf=1,in_order=1,vectorized=1 -- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 + --vdev=net_virtio_user0,mac=00:11:22:33:44:11,path=/tmp/vhost-net1,queues=1,server=1,mrg_rxbuf=1,in_order=1,vectorized=1 \ + -- -i --rxq=1 --txq=1 --txd=1024 --rxd=1024 --nb-cores=1 4. Loop pkts between two virtio-user sides, record performance number with 64b/2000b/8000b/IMIX pkts can get expected:: @@ -168,13 +243,14 @@ Test Case3: VM2VM forwarding test with two CBDMA channels 6. Rerun step 4. Test Case4: VM2VM test with cbdma channels register/unregister stable check -============================================================================ +--------------------------------------------------------------------------- +This case uses vhost, qemu to test vm to vm forwarding packets with 2 CBDMA channels stable when re-bind PCI in vms 50 times. -1. Bind one physical ports to vfio-pci and two CBDMA channels to vfio-pci. +1. Bind 1 NIC port and 2 CBDMA channel to vfio-pci, as common step 1. 2. On host, launch dpdk-vhost by below command:: - ./x86_64-native-linuxapp-gcc/examples/dpdk-vhost -l 26-28 -n 4 -- -p 0x1 --mergeable 1 --vm2vm 1 --dma-type ioat \ + # ./x86_64-native-linuxapp-gcc/examples/dpdk-vhost -l 26-28 -n 4 -- -p 0x1 --mergeable 1 --vm2vm 1 --dma-type ioat \ --socket-file /tmp/vhost-net0 --socket-file /tmp/vhost-net1 --dmas [txd0@0000:00:04.0,txd1@0000:00:04.1] --client --total-num-mbufs 600000 3. Start VM0 with qemu-5.2.0:: @@ -188,7 +264,8 @@ Test Case4: VM2VM test with cbdma channels register/unregister stable check -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \ -chardev socket,id=char0,path=/tmp/vhost-net0,server \ -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \ - -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=true,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on -vnc :10 + -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=true,mrg_rxbuf=on,\ + csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on -vnc :10 4. Start VM1 with qemu-5.2.0:: @@ -201,7 +278,8 @@ Test Case4: VM2VM test with cbdma channels register/unregister stable check -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \ -chardev socket,id=char0,path=/tmp/vhost-net1,server \ -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \ - -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=true,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :12 + -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=true,mrg_rxbuf=on,\ + csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :12 5. Bind virtio port to vfio-pci in both two VMs:: @@ -212,7 +290,7 @@ Test Case4: VM2VM test with cbdma channels register/unregister stable check 6. Start testpmd in VMs seperately:: - ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-2 -n 4 -- -i --rxq=1 --txq=1 --nb-cores=1 --txd=1024 --rxd=1024 + # ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-2 -n 4 -- -i --rxq=1 --txq=1 --nb-cores=1 --txd=1024 --rxd=1024 7. Loop pkts between two virtio-user sides, record performance number with 64b/2000b/8000b/IMIX pkts can get expected:: @@ -248,13 +326,14 @@ Test Case4: VM2VM test with cbdma channels register/unregister stable check 9. Restart vhost, then rerun step 7，check vhost can stable work and get expected throughput. Test Case5: VM2VM split ring test with iperf and reconnect stable check -======================================================================= +----------------------------------------------------------------------- +This case uses vhost, testpmd to test split ring path vm to vm iperf and reconnect stable with 2 CBDMA channels. -1. Bind one physical ports to vfio-pci and two CBDMA channels to vfio-pci. +1. Bind 1 NIC port and 2 CBDMA channel to vfio-pci, as common step 1. 2. On host, launch dpdk-vhost by below command:: - ./x86_64-native-linuxapp-gcc/examples/dpdk-vhost -l 26-28 -n 4 -- -p 0x1 --mergeable 1 --vm2vm 1 --dma-type ioat \ + # ./x86_64-native-linuxapp-gcc/examples/dpdk-vhost -l 26-28 -n 4 -- -p 0x1 --mergeable 1 --vm2vm 1 --dma-type ioat \ --socket-file /tmp/vhost-net0 --socket-file /tmp/vhost-net1 --dmas [txd0@0000:00:04.0,txd1@0000:00:04.1] --client --total-num-mbufs 600000 3. Start VM0 with qemu-5.2.0:: @@ -268,7 +347,8 @@ Test Case5: VM2VM split ring test with iperf and reconnect stable check -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \ -chardev socket,id=char0,path=/tmp/vhost-net0,server \ -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \ - -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=true,mrg_rxbuf=off,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on -vnc :10 + -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=true,mrg_rxbuf=off,\ + csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on -vnc :10 4. Start VM1 with qemu-5.2.0:: @@ -281,7 +361,8 @@ Test Case5: VM2VM split ring test with iperf and reconnect stable check -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \ -chardev socket,id=char0,path=/tmp/vhost-net1,server \ -netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce \ - -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=true,mrg_rxbuf=off,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on -vnc :12 + -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=true,mrg_rxbuf=off,\ + csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on -vnc :12 5. On VM1, set virtio device IP and run arp protocal:: @@ -307,13 +388,14 @@ Test Case5: VM2VM split ring test with iperf and reconnect stable check 10. Relaunch vhost-dpdk, then rerun step 7-9 five times. Test Case6: VM2VM packed ring test with iperf and reconnect stable test -======================================================================= +----------------------------------------------------------------------- +This case uses vhost, testpmd to test packed ring path vm to vm iperf and reconnect stable with 2 CBDMA channels. -1. Bind one physical ports to vfio-pci and two CBDMA channels to vfio-pci. +1. Bind 1 NIC port and 2 CBDMA channel to vfio-pci, as common step 1. 2. On host, launch dpdk-vhost by below command:: - ./x86_64-native-linuxapp-gcc/examples/dpdk-vhost -l 26-28 -n 4 -- -p 0x1 --mergeable 1 --vm2vm 1 --dma-type ioat \ + # ./x86_64-native-linuxapp-gcc/examples/dpdk-vhost -l 26-28 -n 4 -- -p 0x1 --mergeable 1 --vm2vm 1 --dma-type ioat \ --socket-file /tmp/vhost-net0 --socket-file /tmp/vhost-net1 --dmas [txd0@0000:00:04.0,txd1@0000:00:04.1] --total-num-mbufs 600000 3. Start VM0 with qemu-5.2.0:: @@ -327,7 +409,8 @@ Test Case6: VM2VM packed ring test with iperf and reconnect stable test -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \ -chardev socket,id=char0,path=/tmp/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=true,mrg_rxbuf=off,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :10 + -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=true,mrg_rxbuf=off,\ + csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :10 4. Start VM1 with qemu-5.2.0:: @@ -340,7 +423,8 @@ Test Case6: VM2VM packed ring test with iperf and reconnect stable test -netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \ -chardev socket,id=char0,path=/tmp/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=true,mrg_rxbuf=off,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :12 + -device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=true,mrg_rxbuf=off,\ + csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on -vnc :12 5. On VM1, set virtio device IP and run arp protocal:: -- 2.25.1