AETHER-1839 initial sriov role
Change-Id: I54af5c451a18d160d3799e9264ef5af9cfa19d36
diff --git a/templates/sriov.sh.j2 b/templates/sriov.sh.j2
new file mode 100644
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+++ b/templates/sriov.sh.j2
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+#!/bin/bash
+
+{#
+SPDX-FileCopyrightText: © 2021 Open Networking Foundation <support@opennetworking.org>
+SPDX-FileCopyrightText: © 2019 Intel Corporation
+SPDX-License-Identifier: Apache-2.0
+
+# copied from https://github.com/clearlinux/cloud-native-setup/blob/master/clr-k8s-examples/9-multi-network/systemd/sriov.sh
+#}
+# {{ ansible_managed }}
+
+set -o errexit
+set -o pipefail
+set -o nounset
+set -x
+
+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/"$pf"/device/sriov_numvfs)/2
+
+ local vfpci
+ local mac
+ for ((idx = 0; idx < num_vfs; idx++)); do
+ local vfn="virtfn$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"
+ vfio_bind "$pf"
+done