[DPDK] Add ability to set pmd_rxq_affinity for dpdk interfaces

This enables a more fine tuned dpdk for better performance.
More details on pmd-rxq-affinity config:
http://docs.openvswitch.org/en/latest/howto/dpdk/

Change-Id: I630c6af94ff733619fb175f522fc515984862ff6

README.rst

@@ -1040,6 +1040,7 @@ DPDK OVS interfaces
             enabled: true
             type: dpdk_ovs_port
             n_rxq: 2
+            pmd_rxq_affinity: "0:1,1:2"
             bridge: br-prv
             mtu: 9000
           br-prv:
@@ -1070,6 +1071,7 @@ DPDK OVS interfaces
             enabled: true
             type: dpdk_ovs_port
             n_rxq: 2
+            pmd_rxq_affinity: "0:1,1:2"
             mtu: 9000
           dpdk_first_nic:
             name: ${_param:primary_first_nic}
@@ -1079,6 +1081,7 @@ DPDK OVS interfaces
             enabled: true
             type: dpdk_ovs_port
             n_rxq: 2
+            pmd_rxq_affinity: "0:1,1:2"
             mtu: 9000
           dpdkbond0:
             enabled: true

linux/network/dpdk.sls

@@ -147,8 +147,8 @@ linux_network_dpdk_bridge_port_interface_{{ interface_name }}:
     - require:
       - cmd: linux_network_dpdk_bridge_interface_{{ interface.bridge }}
 
-  {# Multiqueue n_rxq and mtu setup on interfaces #}
-  {%- elif interface.type == 'dpdk_ovs_port' and (interface.n_rxq is defined or interface.mtu is defined) %}
+  {# Multiqueue n_rxq, pmd_rxq_affinity and mtu setup on interfaces #}
+  {%- elif interface.type == 'dpdk_ovs_port' and (interface.n_rxq is defined or interface.mtu is defined or interface.pmd_rxq_affinity is defined) %}
 
   {%- if interface.n_rxq is defined %}
 
@@ -160,6 +160,16 @@ linux_network_dpdk_bridge_port_interface_n_rxq_{{ interface_name }}:
 
   {%- endif %}
 
+  {%- if interface.pmd_rxq_affinity is defined %}
+
+linux_network_dpdk_bridge_port_interface_pmd_rxq_affinity_{{ interface_name }}:
+  cmd.run:
+    - name: "ovs-vsctl set Interface {{ interface_name }} other_config:pmd-rxq-affinity={{ interface.pmd_rxq_affinity }} "
+    - unless: |
+        ovs-vsctl get Interface {{ interface_name }} other_config | grep 'pmd-rxq-affinity="{{ interface.pmd_rxq_affinity }}"'
+
+  {%- endif %}
+
   {%- if interface.mtu is defined %}
 
 {# MTU ovs dpdk setup on interfaces #}