OVS-dpdk support

Introduce dpdk support for neutron OVS configuration

Change-Id: Ibb08f835ec4d4f67b561aff35189c4a493a9f420
Epic: PROD-8957
diff --git a/README.rst b/README.rst
index 3b9eda6..34dc657 100644
--- a/README.rst
+++ b/README.rst
@@ -506,6 +506,32 @@
             ovs:
               driver: openvswitch
 
+Neutron OVS DPDK
+==================
+
+Enable datapath netdev for neutron openvswitch agent
+
+.. code-block:: yaml
+
+    neutron:
+      server:
+        version: mitaka
+        ...
+        dpdk: True
+        ...
+
+    neutron:
+      compute:
+        version: mitaka
+        plugin: ml2
+        dpdk: True
+        backend:
+          engine: ml2
+          ...
+          mechanism:
+            ovs:
+              driver: openvswitch
+
 Neutron OVS SR-IOV
 ==================
 
diff --git a/neutron/files/mitaka/ml2_conf.ini b/neutron/files/mitaka/ml2_conf.ini
index a0879b1..67841f2 100644
--- a/neutron/files/mitaka/ml2_conf.ini
+++ b/neutron/files/mitaka/ml2_conf.ini
@@ -196,7 +196,11 @@
 
 # Driver for security groups firewall in the L2 agent (string value)
 #firewall_driver = <None>
+{%- if server.dpdk %}
+firewall_driver = openvswitch
+{%- else %}
 firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
+{%- endif %}
 
 # Controls whether the neutron security group API is enabled in the server. It should be false when using no security groups or using the
 # nova security group API. (boolean value)
diff --git a/neutron/files/mitaka/openvswitch_agent.ini b/neutron/files/mitaka/openvswitch_agent.ini
index 4656e35..b93aaeb 100644
--- a/neutron/files/mitaka/openvswitch_agent.ini
+++ b/neutron/files/mitaka/openvswitch_agent.ini
@@ -207,6 +207,9 @@
 # to 'netdev'. (string value)
 # Allowed values: system, netdev
 #datapath_type = system
+{%- if neutron.dpdk %}
+datapath_type = netdev
+{%- endif %}
 
 # OVS vhost-user socket directory. (string value)
 #vhostuser_socket_dir = /var/run/openvswitch
@@ -240,7 +243,11 @@
 
 # Driver for security groups firewall in the L2 agent (string value)
 #firewall_driver = <None>
+{%- if neutron.dpdk %}
+firewall_driver = openvswitch
+{%- else %}
 firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
+{%- endif %}
 
 # Controls whether the neutron security group API is enabled in the server. It should be false when using no security groups or using the
 # nova security group API. (boolean value)
diff --git a/neutron/map.jinja b/neutron/map.jinja
index d00f754..795c4ce 100644
--- a/neutron/map.jinja
+++ b/neutron/map.jinja
@@ -3,6 +3,7 @@
     'Debian': {
         'pkgs': ['neutron-openvswitch-agent', 'openvswitch-switch', 'python-pycadf'],
         'services': ['neutron-openvswitch-agent'],
+        'dpdk': false,
         'audit': {
           'enabled': false
         }
@@ -10,6 +11,7 @@
     'RedHat': {
         'pkgs': ['openstack-neutron-openvswitch', 'openvswitch', 'python-pycadf'],
         'services': ['neutron-openvswitch-agent'],
+        'dpdk': false,
         'audit': {
           'enabled': false
         }
@@ -19,11 +21,13 @@
 {% set gateway = salt['grains.filter_by']({
     'Debian': {
         'pkgs': ['neutron-dhcp-agent', 'neutron-openvswitch-agent', 'neutron-l3-agent', 'openvswitch-common', 'neutron-metadata-agent'],
-        'services': ['neutron-openvswitch-agent', 'neutron-metadata-agent', 'neutron-l3-agent', 'neutron-dhcp-agent']
+        'services': ['neutron-openvswitch-agent', 'neutron-metadata-agent', 'neutron-l3-agent', 'neutron-dhcp-agent'],
+        'dpdk': false
     },
     'RedHat': {
         'pkgs': ['openstack-neutron-openvswitch'],
-        'services': ['neutron-openvswitch-agent', 'neutron-metadata-agent', 'neutron-l3-agent', 'neutron-dhcp-agent']
+        'services': ['neutron-openvswitch-agent', 'neutron-metadata-agent', 'neutron-l3-agent', 'neutron-dhcp-agent'],
+        'dpdk': false
     },
 }, merge=pillar.neutron.get('gateway', {})) %}
 
@@ -33,6 +37,7 @@
         'pkgs_ml2': ['neutron-plugin-ml2'],
         'services': ['neutron-server'],
         'notification': False,
+        'dpdk': false,
         'audit': {
           'enabled': false
         }
@@ -42,6 +47,7 @@
         'pkgs': ['openstack-neutron'],
         'services': ['neutron-server'],
         'notification': False,
+        'dpdk': false,
         'audit': {
           'enabled': false
         }
diff --git a/tests/pillar/compute_dpdk.sls b/tests/pillar/compute_dpdk.sls
new file mode 100644
index 0000000..0a3a498
--- /dev/null
+++ b/tests/pillar/compute_dpdk.sls
@@ -0,0 +1,25 @@
+neutron:
+  compute:
+    agent_mode: legacy
+    dpdk: True
+    backend:
+      engine: ml2
+      tenant_network_types: "flat,vlan"
+      mechanism:
+        ovs:
+          driver: openvswitch
+    dvr: false
+    enabled: true
+    external_access: false
+    local_ip: 10.1.0.105
+    message_queue:
+      engine: rabbitmq
+      host: 172.16.10.254
+      password: workshop
+      port: 5672
+      user: openstack
+      virtual_host: /openstack
+    metadata:
+      host: 172.16.10.254
+      password: password
+    version: mitaka