Adding SRIOV Network Device Plugin to KuD

Integrating SRIOV as an add-on to KuD. A device
should have X700 series NIC for this Add-on to work.
Getting the device driver, build and installing it is
a part of this patch. Followed by running the SRIOV CNI
Daemonset, and NetworkAttachmentDefinition.
Reworked the way SRIOV check happens.
Previously ran on installer.sh.
Now the script is injected into kube-nodes and playbook will run
only if the hardware check is true by creating a conf file.
Removed unwanted comments and nit changes.

Signed-off-by: Akhila Kishore <akhila.kishore@intel.com>
Issue-ID: MULTICLOUD-832
Change-Id: I1701a50bc717ddca0d332d6a42d329eaf4c03820

1 files changed, 68 insertions, 0 deletions

diff --git a/kud/deployment_infra/playbooks/install_iavf_drivers.sh b/kud/deployment_infra/playbooks/install_iavf_drivers.sh
new file mode 100755
index 00000000..d44483de
--- /dev/null
+++ b/kud/deployment_infra/playbooks/install_iavf_drivers.sh
@@ -0,0 +1,68 @@
+#!/bin/bash
+
+# Based on:
+# https://gerrit.akraino.org/r/#/c/icn/+/1359/1/deploy/kud-plugin-addons/device-plugins/sriov/driver/install_iavf_drivers.sh
+
+function install_iavf_driver {
+    local ifname=$1
+
+    echo "Installing modules..."
+    echo "Installing i40evf blacklist file..."
+    mkdir -p "/etc/modprobe.d/"
+    echo "blacklist i40evf" > "/etc/modprobe.d/iavf-blacklist-i40evf.conf"
+
+    kver=`uname -a | awk '{print $3}'`
+    install_mod_dir=/lib/modules/$kver/updates/drivers/net/ethernet/intel/iavf/
+    echo "Installing driver in $install_mod_dir"
+    mkdir -p $install_mod_dir
+    cp iavf.ko $install_mod_dir
+
+    echo "Installing kernel module i40evf..."
+    depmod -a
+    modprobe i40evf
+    modprobe iavf
+
+    echo "Enabling VF on interface $ifname..."
+    echo "/sys/class/net/$ifname/device/sriov_numvfs"
+    echo '8' > /sys/class/net/$ifname/device/sriov_numvfs
+}
+
+function is_used {
+    local ifname=$1
+    route_info=`ip route show | grep $ifname`
+    if [ -z "$route_info" ]; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+function get_sriov_ifname {
+    for net_device in /sys/class/net/*/ ; do
+        if [ -e $net_device/device/sriov_numvfs ] ; then
+            ifname=$(basename $net_device)
+            is_used $ifname
+            if [ "$?" = "0" ]; then
+                echo $ifname
+                return
+            fi
+        fi
+    done
+    echo ''
+}
+
+if [ $# -ne 1 ] ; then
+    ifname=$(get_sriov_ifname)
+    if [ -z "$ifname" ]; then
+        echo "Cannot find Nic with SRIOV support."
+    else
+        install_iavf_driver $ifname
+    fi
+else
+    ifname=$1
+    if [ ! -e /sys/class/net/$ifname/device/sriov_numvfs ] ; then
+        echo "${ifname} is not a valid sriov interface"
+    else
+        install_iavf_driver $ifname
+    fi
+fi