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No longer maintained

[DEPRECATED] This repository is no longer maintained

While this project is fully functional, the dependencies are no longer up to date. You are still welcome to explore, learn, and use the code provided here. Or alternative repositories such as: sriov-cni sriov-network-device-plugin

SR-IOV CNI plugin

This repository contains the sriov CNI plugin that allows DPDK driver binding as well as the orginal featuers of sriov-cni. To learn about CNI please visit containernetworking/cni.

NIC with SR-IOV capabilities works by introducing the idea of physical functions (PFs) and virtual functions (VFs).

PF is used by host. Each VFs can be treated as a separate physical NIC and assigned to one container, and configured with separate MAC, VLAN and IP, etc.

Build

This plugin requires Go 1.5+ to build.

Go 1.5 users will need to set GO15VENDOREXPERIMENT=1 to get vendored dependencies. This flag is set by default in 1.6.

#./build

Upon successful build the plugin binary will be available in bin/sriov.

Enable SR-IOV

Given Intel ixgbe NIC on CentOS, Fedora or RHEL:

# vi /etc/modprobe.conf
options ixgbe max_vfs=8,8

Configuration reference

Main parameters

  • name (string, required): the name of the network
  • type (string, required): "sriov"
  • if0 (string, optional): name of the PF, if not provided then pfNetdevices is required
  • if0name (string, optional): interface name in the Container
  • pfNetdevices (list, optional) PFs list, if not provided then if0 is required
  • l2enable (boolean, optional): if true then add VF as L2 mode only, IPAM will not be executed
  • vlan (int, optional): VLAN ID to assign for the VF
  • ipam (dictionary, optional): IPAM configuration to be used for this network.
  • dpdk (dictionary, optional): DPDK configuration

Using DPDK drivers:

If this plugin is use to bind a VF to dpdk driver then the IPAM configtuations will be ignored.

DPDK parameters

If given, The DPDK configuration expected to have the following parameters

  • kernel_driver (string, required): kernel driver name
  • dpdk_driver (string, required): DPDK capable driver name
  • dpdk_tool (string, required): path to the dpdk-devbind.py script

Usage

Configuration with IPAM:

# cat > /etc/cni/net.d/10-mynet.conf <<EOF
{
    "name": "mynet",
    "type": "sriov",
    "if0": "enp1s0f1",
    "ipam": {
        "type": "host-local",
        "subnet": "10.55.206.0/26",
        "routes": [
            { "dst": "0.0.0.0/0" }
        ],
        "gateway": "10.55.206.1"
    }
}
EOF

eth0      Link encap:Ethernet  HWaddr 66:D8:02:77:AA:AA  
          inet addr:10.55.206.46  Bcast:0.0.0.0  Mask:255.255.255.192
          inet6 addr: fe80::64d8:2ff:fe77:aaaa/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:7 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:530 (530.0 b)  TX bytes:988 (988.0 b)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

Configuration with DPDK:

# cat > /etc/cni/net.d/20-mynet-dpdk.conf <<EOF
{
    "name": "mynet",
    "type": "sriov",
    "if0": "enp1s0f1",
    "if0name": "net0",
    "dpdk": {
        "kernel_driver":"ixgbevf",
        "dpdk_driver":"igb_uio",
        "dpdk_tool":"/opt/dpdk/usertools/dpdk-devbind.py"
    }
}
EOF

Configuration with Multiple PFs:

# cat > /etc/cni/net.d/10-mynet.conf <<EOF
{
    "name": "mynet",
    "type": "sriov",
    "pfNetdevices": ["enp2s0f0", "enp2s0f1"],
    "ipam": {
        "type": "host-local",
        "subnet": "10.55.206.0/26",
        "routes": [
            { "dst": "0.0.0.0/0" }
        ],
        "gateway": "10.55.206.1"
    }
}
EOF

More info.

Contacts

For any questions about Multus CNI, please reach out on github issue or feel free to contact the developers @kural OR @ahalim in our Intel-Corp Slack