Applied to master, thanks 2016-07-28 5:48 GMT-07:00 Bhanuprakash Bodireddy < bhanuprakash.bodire...@intel.com>:
> Add steps for loopback test using vhost-user configured with multiqueue > doing packet forwarding in kernel. > > Signed-off-by: Bhanuprakash Bodireddy <bhanuprakash.bodire...@intel.com> > --- > INSTALL.DPDK-ADVANCED.md | 86 ++++++++++++++++++++++++++++++ > ++++++++++++++++++ > 1 file changed, 86 insertions(+) > > diff --git a/INSTALL.DPDK-ADVANCED.md b/INSTALL.DPDK-ADVANCED.md > index 9ae536d..63440d0 100644 > --- a/INSTALL.DPDK-ADVANCED.md > +++ b/INSTALL.DPDK-ADVANCED.md > @@ -372,6 +372,91 @@ For users wanting to do packet forwarding using > kernel stack below are the steps > where "-n 0" refers to ring '0' i.e dpdkr0 > ``` > > +### 5.3 PHY-VM-PHY [VHOST MULTIQUEUE] > + > + The steps (1-5) in 3.3 section of [INSTALL DPDK] guide will create & > initialize DB, > + start vswitchd and add dpdk devices to bridge br0. > + > + 1. Configure PMD and RXQs. For example set no. of dpdk port rx queues > to atleast 2. > + The number of rx queues at vhost-user interface gets automatically > configured after > + virtio device connection and doesn't need manual configuration. > + > + ``` > + ovs-vsctl set Open_vSwitch . other_config:pmd-cpu-mask=c > + ovs-vsctl set Interface dpdk0 options:n_rxq=2 > + ovs-vsctl set Interface dpdk1 options:n_rxq=2 > + ``` > + > + 2. Instantiate Guest VM using Qemu cmdline > + > + Guest Configuration > + > + ``` > + | configuration | values | comments > + |----------------------|--------|----------------- > + | qemu version | 2.5.0 | > + | qemu thread affinity |2 cores | taskset 0x30 > + | memory | 4GB | - > + | cores | 2 | - > + | Qcow2 image |Fedora22| - > + | multiqueue | on | - > + ``` > + > + Instantiate Guest > + > + ``` > + export VM_NAME=vhost-vm > + export GUEST_MEM=4096M > + export QCOW2_IMAGE=/root/Fedora22_x86_64.qcow2 > + export VHOST_SOCK_DIR=/usr/local/var/run/openvswitch > + > + taskset 0x30 qemu-system-x86_64 -cpu host -smp 2,cores=2 -drive > file=$QCOW2_IMAGE -m 4096M --enable-kvm -name $VM_NAME -nographic -object > memory-backend-file,id=mem,size=$GUEST_MEM,mem-path=/dev/hugepages,share=on > -numa node,memdev=mem -mem-prealloc -chardev > socket,id=char1,path=$VHOST_SOCK_DIR/dpdkvhostuser0 > -netdev type=vhost-user,id=mynet1,chardev=char1,vhostforce,queues=2 > -device virtio-net-pci,mac=00:00:00:00:00:01,netdev=mynet1,mq=on,vectors=6 > -chardev socket,id=char2,path=$VHOST_SOCK_DIR/dpdkvhostuser1 -netdev > type=vhost-user,id=mynet2,chardev=char2,vhostforce,queues=2 -device > virtio-net-pci,mac=00:00:00:00:00:02,netdev=mynet2,mq=on,vectors=6 > + ``` > + > + Note: Queue value above should match the queues configured in OVS, > The vector value > + should be set to 'no. of queues x 2 + 2'. > + > + 3. Guest interface configuration > + > + Assuming there are 2 interfaces in the guest named eth0, eth1 check > the channel > + configuration and set the number of combined channels to 2 for > virtio devices. > + More information can be found in [Vhost walkthrough] section. > + > + ``` > + ethtool -l eth0 > + ethtool -L eth0 combined 2 > + ethtool -L eth1 combined 2 > + ``` > + > + 4. Kernel Packet forwarding > + > + Configure IP and enable interfaces > + > + ``` > + ifconfig eth0 5.5.5.1/24 up > + ifconfig eth1 90.90.90.1/24 up > + ``` > + > + Configure IP forwarding and add route entries > + > + ``` > + sysctl -w net.ipv4.ip_forward=1 > + sysctl -w net.ipv4.conf.all.rp_filter=0 > + sysctl -w net.ipv4.conf.eth0.rp_filter=0 > + sysctl -w net.ipv4.conf.eth1.rp_filter=0 > + ip route add 2.1.1.0/24 dev eth1 > + route add default gw 2.1.1.2 eth1 > + route add default gw 90.90.90.90 eth1 > + arp -s 90.90.90.90 DE:AD:BE:EF:CA:FE > + arp -s 2.1.1.2 DE:AD:BE:EF:CA:FA > + ``` > + > + Check traffic on multiple queues > + > + ``` > + cat /proc/interrupts | grep virtio > + ``` > + > ## <a name="vhost"></a> 6. Vhost Walkthrough > > DPDK 16.04 supports two types of vhost: > @@ -848,5 +933,6 @@ Please report problems to b...@openvswitch.org. > [DPDK Docs]: http://dpdk.org/doc > [libvirt]: http://libvirt.org/formatdomain.html > [Guest VM using libvirt]: INSTALL.DPDK.md#ovstc > +[Vhost walkthrough]: INSTALL.DPDK.md#vhost > [INSTALL DPDK]: INSTALL.DPDK.md#build > [INSTALL OVS]: INSTALL.DPDK.md#build > -- > 2.4.11 > > _______________________________________________ > dev mailing list > dev@openvswitch.org > http://openvswitch.org/mailman/listinfo/dev > _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
