COMAC-8 initial version of comac-in-a-box makefile

This makefile installs OMEC and OAI eNB and UE in a single node.
It does not require any special hardwares.
Run "make" -> "make run-test" for test.
CORD platform support will be added later.

Change-Id: I9f27219522c85dcd95c50a23a9bab5f32f7484b1
diff --git a/scripts/sriov.sh b/scripts/sriov.sh
new file mode 100755
index 0000000..a478541
--- /dev/null
+++ b/scripts/sriov.sh
@@ -0,0 +1,84 @@
+#!/bin/bash
+
+# Copyright (c) 2019 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# copied from https://github.com/clearlinux/cloud-native-setup/blob/master/clr-k8s-examples/9-multi-network/systemd/sriov.sh
+
+set -o errexit
+set -o pipefail
+set -o nounset
+set -x
+
+OPTIND=1
+bind="false"
+
+while getopts ":b" opt; do
+	case ${opt} in
+	b)
+		bind="true"
+		;;
+	\?)
+		echo "Usage: sriov.sh [-b] ens785f0 ens785f1 ..."
+		echo "-b	Bind to vfio-pci"
+		exit
+		;;
+	esac
+done
+shift $((OPTIND - 1))
+
+setup_pf() {
+	local pf=$1
+	local num_vfs
+
+	echo "Resetting PF $pf"
+	echo 0 | tee /sys/class/net/"$pf"/device/sriov_numvfs
+	num_vfs=$(cat /sys/class/net/"$pf"/device/sriov_totalvfs)
+	echo "Enabling $num_vfs VFs for $pf"
+	echo "$num_vfs" | tee /sys/class/net/"$pf"/device/sriov_numvfs
+	ip link set "$pf" up
+	sleep 1
+}
+
+vfio_bind() {
+	local pf=$1
+	local pfpci
+	local num_vfs
+
+	pfpci=$(readlink /sys/devices/pci*/*/*/net/"$pf"/device | awk '{print substr($1,10)}')
+	num_vfs=$(cat /sys/class/net/"$pf"/device/sriov_numvfs)
+
+	local vfpci
+	local mac
+	for ((idx = 0; idx < num_vfs; idx++)); do
+                #Some drivers does not support state change of VF
+		#ip link set dev $pf vf $idx state enable
+
+		local vfn="virtfn$idx"
+		# shellcheck disable=SC2012
+		vfpci=$(ls -l /sys/devices/pci*/*/"$pfpci" | awk -v vfn=$vfn 'vfn==$9 {print substr($11,4)}')
+		# Capture and set MAC of the VF before unbinding from linux, for later use in CNI
+		mac=$(cat /sys/bus/pci*/*/"$vfpci"/net/*/address)
+		ip link set dev "$pf" vf $idx mac "$mac"
+		# Bind VF to vfio-pci
+		echo "$vfpci" >/sys/bus/pci*/*/"$vfpci"/driver/unbind
+		echo "vfio-pci" >/sys/devices/pci*/*/"$vfpci"/driver_override
+		echo "$vfpci" >/sys/bus/pci/drivers/vfio-pci/bind
+	done
+}
+
+for pf in "$@"; do
+	setup_pf "$pf"
+        if [ $bind ]; then vfio_bind "$pf"; fi
+done