[DPDK] Enable VT-d in kernel via grub in case vfio-pci PMD driver

This is required in order to use vfio-pci driver.
More info: http://docs.openvswitch.org/en/latest/intro/install/dpdk/

Change-Id: I1c936ffd4a903b9c6d67cdde6c612019a85f9b9e

README.rst

         bridge: openvswitch
         dpdk:
           enabled: true
-          driver: uio/vfio-pci
+          driver: uio/vfio
         openvswitch:
           pmd_cpu_mask: "0x6"
           dpdk_socket_mem: "1024,1024"
           dpkd0:
             name: ${_param:dpdk_nic}
             pci: 0000:06:00.0
-            driver: igb_uio/vfio
+            driver: igb_uio/vfio-pci
             enabled: true
             type: dpdk_ovs_port
             n_rxq: 2
         bridge: openvswitch
         dpdk:
           enabled: true
-          driver: uio/vfio-pci
+          driver: uio/vfio
         openvswitch:
           pmd_cpu_mask: "0x6"
           dpdk_socket_mem: "1024,1024"
           dpdk_second_nic:
             name: ${_param:primary_second_nic}
             pci: 0000:06:00.0
-            driver: igb_uio/vfio
+            driver: igb_uio/vfio-pci
             bond: dpdkbond0
             enabled: true
             type: dpdk_ovs_port
           dpdk_first_nic:
             name: ${_param:primary_first_nic}
             pci: 0000:05:00.0
-            driver: igb_uio/vfio
+            driver: igb_uio/vfio-pci
             bond: dpdkbond0
             enabled: true
             type: dpdk_ovs_port

linux/system/dpdk.sls

+{%- from "linux/map.jinja" import network with context %}
+
+{%- if network.dpdk.enabled and network.dpdk.driver == "vfio" %}
+include:
+  - linux.system.iommu
+{%- endif %}

linux/system/init.sls

 {%- from "linux/map.jinja" import system with context %}
+{%- from "linux/map.jinja" import network with context %}
 include:
 - linux.system.env
 - linux.system.profile
 {%- if system.kernel.hugepages is defined %}
 - linux.system.hugepages
 {%- endif %}
+{%- if network.dpdk is defined %}
+- linux.system.dpdk
+{%- endif %}
 {%- if system.kernel.sriov is defined %}
 - linux.system.sriov
 {%- endif %}

linux/system/iommu.sls

+include:
+  - linux.system.grub
+
+/etc/default/grub.d/90-iommu.cfg:
+  file.managed:
+    - contents: 'GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT intel_iommu=on iommu=pt"'
+    - require:
+      - file: grub_d_directory
+{%- if grains.get('virtual_subtype', None) not in ['Docker', 'LXC'] %}
+    - watch_in:
+      - cmd: grub_update
+{%- endif %}

linux/system/sriov.sls

 {%- from "linux/map.jinja" import system with context %}
 
 include:
-  - linux.system.grub
-
-/etc/default/grub.d/90-sriov.cfg:
-  file.managed:
-    - contents: 'GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT intel_iommu=on iommu=pt"'
-    - require:
-      - file: grub_d_directory
-{%- if grains.get('virtual_subtype', None) not in ['Docker', 'LXC'] %}
-    - watch_in:
-      - cmd: grub_update
-{%- endif %}
+  - linux.system.iommu
 
 /etc/modprobe.d/sriov.conf:
   file.managed: