Add VF Manager Jinja

roles/neutron-sriov/templates/pf9-sriov-vf-manager.service.j2

@@ -0,0 +1,15 @@
+[Unit]
+Description=Platform9 SR-IOV Virtual Function Manager
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/opt/pf9/pf9-virtual-functions.sh start
+ExecStop=/opt/pf9/pf9-virtual-functions.sh stop
+ExecReload=/opt/pf9/pf9-virtual-functions.sh reload
+StandardOutput=journal
+
+[Install]
+WantedBy=multi-user.target

roles/neutron-sriov/templates/pf9-virtual-functions.sh.j2

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+#!/bin/bash
+# Copyright 2019 Platform9 Systems Inc.
+# All Rights Reserved.
+
+##
+# This script implements SR-IOV virtual functions based on variables defined
+# within Platform9 Express.
+#
+# DO NOT EDIT THIS FILE MANUALLY!
+##
+
+# VF Array
+declare -A vfs
+
+{% for vf in sriov_numvfs %}
+vfs[{{ vf.split(':')[0] }}]={{ vf.split(':')[1] }}
+{% endfor %}
+
+function get_vf_count {
+  vf_count=$(</sys/class/net/$1/device/sriov_numvfs)
+}
+
+function unset_vf {
+  echo 0 > /sys/class/net/$1/device/sriov_numvfs
+}
+
+function set_vf {
+  echo $2 > /sys/class/net/$1/device/sriov_numvfs
+}
+
+function start {
+  for vf in "${!vfs[@]}"
+  do
+    echo "Enabling ${vfs[$vf]} virtual functions on $vf."
+    set_vf $vf ${vfs[$vf]}
+  done
+}
+
+function stop {
+  for vf in "${!vfs[@]}"
+  do
+    echo "Removing virtual functions from $vf."
+    unset_vf $vf
+  done
+}
+
+function reload {
+  for vf in "${!vfs[@]}"
+  do
+    get_vf_count $vf
+    if [ "$vf_count" -ne "${vfs[$vf]}" ]; then
+      echo "Virtual function count has changed. Resetting virtual functions on $vf. Affected VMs must be power cycled to restore connectivity!"
+      unset_vf $vf
+      set_vf $vf ${vfs[$vf]}
+    else
+      echo "Virtual function count on $vf has not changed. Ignoring service reload."
+    fi
+  done
+}
+
+"$@"