Hi:
I want to test dpdk vhost-user port on ovs to follow https://software.intel.com/en-us/blogs/2015/06/09/building-vhost-user-for-ovs-today-using-dpdk-200; I create ovs+dpdk environment followed INSTALL.DPDK.md; and create 2 VMs, VMs Can communication with each other, but VM can not communicate with PC in the outside Network, VMs and PC in a same subnet. PC(192.168.0.103/24) ping vm(192.168.0.90); vm’s host’s dpdk NIC and PC are in a L2 switch. And DPDK NIC connected to switch’s Port Eth1/0/8 Investigation: Binding VM’s IP and Mac in PC’s ARP table, and binding VM’s Mac in Port Eth1/0/8; PC is pinging vm, I can see Output packets of Eth1/0/8 increasing regularly, which means the ping request packet has send to DPDK NIC. But the ovs-ofctl dump-flows show there is no packet comes into OVS. Why? ovs-ofctl dump-flows ovsbr0. (the n_packets keeps 11174 while PC is pinging VM); NXST_FLOW reply (xid=0x4): cookie=0x0, duration=115939.684s, table=0, n_packets=11174, n_bytes=873856, idle_age=935, hard_age=65534, priority=0 actions=NORMAL My switch has NO vlan , the default VLAN is 1. But when I ping from vm1 to vm2 , showing MaC address in OVS which shows as follows: port VLAN MAC Age 4 0 00:00:00:00:02:12 1 3 0 00:00:00:00:00:04 1 What was the reason why VM cannot communication with the PC? Thank you My environment as follows: 1. OVS: 2.5.0 Dpdk: 2.2.0 Qemu: 2.5.0 2. ovs-ofctl dump-flows ovsbr0. (the n_packets keeps 11174 while PC is pinging VM); NXST_FLOW reply (xid=0x4): cookie=0x0, duration=115939.684s, table=0, n_packets=11174, n_bytes=873856, idle_age=935, hard_age=65534, priority=0 actions=NORMAL root@host52:~# ovs-vsctl show 4ed1b9ac-4644-4c0f-a44d-bdf40770e9a1 Bridge "ovsbr0" Port "vhost-user-0" Interface "vhost-user-0" type: dpdkvhostuser Port "dpdk0" Interface "dpdk0" type: dpdk Port "vhost-user-1" Interface "vhost-user-1" type: dpdkvhostuser Port "ovsbr0" Interface "ovsbr0" type: internal 4. Start VM info: qemu-system-x86_64 -m 1024 -smp 2 -hda /root/vm11.qcow2 -boot c -enable-kvm -vnc 0.0.0.0:1 -chardev socket,id=char1,path=/usr/local/var/run/openvswitch/vhost-user-0 -netdev type=vhost-user,id=mynet1,chardev=char1,vhostforce -device virtio-net-pci,mac=00:00:00:00:01:12,netdev=mynet1 -object memory-backend-file,id=mem,size=1024M,mem-path=/dev/hugepages,share=on -numa node,memdev=mem -mem-prealloc -d exec 5. My build command as follows: #!/bin/bash ################ config and compile qemu ################ # cd qemu # ./configure # make # make install ######################################################## ################ config and compile dpdk ################ # cd dpdk # make config T=x86_64-native-linuxapp-gcc # make install T=x86_64-native-linuxapp-gcc ######################################################## ################ config and compile ovs ################ # cd ovs # ./boot.sh # ./configure --localstatedir=/var --with-dpdk=/root/workplane/dpdk/x86_64-native-linuxapp-gcc # make # make install ######################################################## ## set hugepage number, use boot cmdline or procfs echo 8 > /proc/sys/vm/nr_hugepages ## insert the kernel modules modprobe uio insmod $DPDK_BUILD/kmod/igb_uio.ko insmod $DPDK_BUILD/kmod/rte_kni.ko insmod $DPDK_DIR/lib/librte_vhost/eventfd_link/eventfd_link.ko # unbind the dpdk interface $DPDK_DIR/tools/dpdk_nic_bind.py --bind=igb_uio 01:00.0 $DPDK_DIR/tools/dpdk_nic_bind.py --bind=igb_uio 01:00.1 #Mount hugetable mkdir -p /dev/hugepages mount -t hugetlbfs -o pagesize=1G none /dev/hugepages #first time #ovsdb-tool create /usr/local/etc/openvswitch/conf.db /usr/local/share/openvswitch/vswitch.ovsschema ovsdb-server --remote=punix:/usr/local/var/run/openvswitch/db.sock --remote=db:Open_vSwitch,Open_vSwitch,manager_options --pidfile --detach --log-file #firsttime only #ovs-vsctl --no-wait init ovs-vswitchd --dpdk -c 0x77 -n 2 --socket-mem 2048,0 -- unix:$DB_SOCK --pidfile --detach --log-file ############################################################################## ## Add brige /usr/local/bin/ovs-vsctl add-br ovsbr0 -- set bridge ovsbr0 datapath_type=netdev ## Add dpdk port /usr/local/bin/ovs-vsctl add-port ovsbr0 dpdk0 -- set Interface dpdk0 type=dpdk ## Add vhost-user port /usr/local/bin/ovs-vsctl add-port ovsbr0 vhost-user-0 -- set Interface vhost-user-0 type=dpdkvhostuser /usr/local/bin/ovs-vsctl add-port ovsbr0 vhost-user-1 -- set Interface vhost-user-1 type=dpdkvhostuser
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