Hi, the silence confuses me, at least I would like to understand if it is well supported or not for the release so I can decide whether to find an alternative or not. what is the trigger for the guest to send the VHOST_USER_SET_VRING_KICK?
Thanks Edgar On Fri, Nov 25, 2016 at 9:58 AM edgar helmut <[email protected]> wrote: > Hi, > I am following http://dpdk.org/doc/guides/sample_app_ug/vhost.html using > 16.11 in order to have a simple VM forwarding packets from one NIC to > another efficiently, but it doesn't work... so I need some help to > understand what am i missing. > I am using x520 (intel 82599). > host is ubuntu 16.04 and dpdk 16.11. > > my steps at host: > 1. enabling VHOST defines and building x86_64-native-linuxapp-gcc. > > 2. both interfaces are bind like: > 0000:04:00.0 'Ethernet 10G 2P X520 Adapter' drv=igb_uio unused=ixgbe > 0000:04:00.1 'Ethernet 10G 2P X520 Adapter' drv=igb_uio unused=ixgbe > > 3. then making the project examples/vhost and executing: > ./build/vhost-switch -c 0x03 -n 4 --socket-mem 1024 --file-prefix p1 -- > -p 1 --vm2vm 0 --socket-file /tmp/sock1 --client -P > ./build/vhost-switch -c 0x30 -n 4 --socket-mem 1024 --file-prefix p2 -- > -p 2 --vm2vm 0 --socket-file /tmp/sock2 --client -P > > 4. creating the guest > qemu- system-x86_64 -chardev socket,id=char1,path=/tmp/sock1,server > -netdev type=vhost-user,id=hostnet1,chardev=char1,queues=2 -device > virtio-net-pci,mq=on,vectors=2,netdev=hostnet1,id=net1,mac=00:00:00:00:00:01 > -chardev socket,id=char2,path=/tmp/sock2,server -netdev > type=vhost-user,id=hostnet2,chardev=char2,queues=2 -device > virtio-net-pci,mq=on,vectors=2,netdev=hostnet2,id=net2,mac=00:00:00:00:00:02 > -object > memory-backend-file,id=mem2,size=2048M,mem-path=/run/hugepages,share=on ... > > my steps on the guest: > 1. enabling VHOST defines and building x86_64-native-linuxapp-gcc. > > 2. successfully setting up environment: > modprobe uio_pci_generic > ./tools/dpdk-devbind.py -b uio_pci_generic 0000:00:07.0 > ./tools/dpdk-devbind.py -b uio_pci_generic 0000:00:08.0 > ./examples/l3fwd/build/l3fwd -c 0x3 -n 3 -- --parse-ptype -p 0x3 -P -L > --config="(0,0,0),(0,1,1),(1,0,0),(1,1,1)" --no-numa > it looks like the l3fwd app initialized successfully but it receives no > traffic. > > I see at the host that connection is made however no traffic arrives to > the host. > digging into the code i see that the message VHOST_USER_SET_VRING_KICK > never arrives to the host hence the callback new_device is never called and > I can't figure out why. > > Any ideas? > > Thanks, > Edgar >
