Add support for VPP interface

Vector Packet Processing (VPP) is a high performance packet processing
stack that runs in user space in Linux. VPP is used as an alternative to
kernel networking stack for accelerated network data path. VPP uses DPDK
poll-mode drivers to bind system interfaces rather than kernel drivers.
VPP bound interfacees are not visible to kernel networking stack and
therefore require different configuration steps in os-net-config.

VPP interface will be used in Openstack by either Neutron ML2 driver
networking-vpp as an alternative to OVS, or by Opendaylight SDN
controller with Honeycomb agent.

This patch adds interface configuration support to os-net-config.
The kernel nic specified to be VPP interface type will be bound to
VPP with a DPDK poll-mode driver. Note that os-net-config will only
configure those settings that affect interface binding, all other
configurations for VPP will be configured throught TripleO Heat
Templates.

Implements: blueprint fdio-integration-tripleo

Change-Id: Iebb40b7c5b252c51e86b6f44bcf36ed206101390
Signed-off-by: Feng Pan <fpan@redhat.com>

2 files changed, 32 insertions, 0 deletions

diff --git a/etc/os-net-config/samples/vpp_interface.json b/etc/os-net-config/samples/vpp_interface.json
new file mode 100644
index 0000000..5d2f82a
--- /dev/null
+++ b/etc/os-net-config/samples/vpp_interface.json
@@ -0,0 +1,14 @@
+{ "network_config": [
+    {
+        "type": "vpp_interface",
+        "name": "nic2",
+        "addresses": [
+          {
+            "ip_netmask": "192.0.2.1/24"
+          }
+        ],
+        "uio_driver": "uio_pci_generic",
+        "options": "vlan-strip-offload off"
+    }
+  ]
+}
diff --git a/etc/os-net-config/samples/vpp_interface.yaml b/etc/os-net-config/samples/vpp_interface.yaml
new file mode 100644
index 0000000..de790d5
--- /dev/null
+++ b/etc/os-net-config/samples/vpp_interface.yaml
@@ -0,0 +1,18 @@
+network_config:
+  -
+    type: vpp_interface
+    name: nic2
+    addresses:
+      -
+        ip_netmask: 192.0.2.1/24
+    # DPDK poll-mode driver name. Defaults to 'vfio-pci', other possible value
+    # is 'uio_pci_generic'. It is also possible to specify other driver names
+    # such as 'igb_uio', however, it is assumed that any required kernel
+    # modules for those drivers are already loaded when os-net-config is
+    # invoked.
+    uio_driver: uio_pci_generic
+    # Interface options such as vlan stripping and tx/rx transmit queues
+    # specification. Reference for those configurations can
+    # be found at https://wiki.fd.io/view/VPP/Command-line_Arguments
+    # Example: 'vlan-strip-offload on num-rx-queues 3'
+    #options: "vlan-strip-offload off"