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#!/usr/bin/env bash
# Copyright (c) 2021 Cisco and/or its affiliates.
# 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.
# CSIT SRIOV VF initialization and isolation.
set -euo pipefail
SCRIPT_DIR="$(dirname $(readlink -e "${BASH_SOURCE[0]}"))"
source "${SCRIPT_DIR}/csit-initialize-vfs-data.sh"
# Initilize whitelisted NICs with maximum number of VFs.
pci_idx=0
for pci_addr in ${PCI_WHITELIST[@]}; do
if ! [[ ${PCI_BLACKLIST[*]} =~ "${pci_addr}" ]]; then
pci_path="/sys/bus/pci/devices/${pci_addr}"
# SR-IOV initialization
case "${1:-start}" in
"start" )
if [ $(< "${pci_path}"/sriov_totalvfs) -gt 128 ]
then
sriov_totalvfs=128
else
sriov_totalvfs=$(< "${pci_path}"/sriov_totalvfs)
fi
;;
"stop" )
sriov_totalvfs=0
;;
esac
echo ${sriov_totalvfs} > "${pci_path}"/sriov_numvfs
# SR-IOV 802.1Q isolation
case "${1:-start}" in
"start" )
pf=$(basename "${pci_path}"/net/*)
for vf in $(seq "${sriov_totalvfs}"); do
# PCI address index in array (pairing siblings).
if [[ -n ${PF_INDICES[@]} ]]
then
vlan_pf_idx=${PF_INDICES[$pci_addr]}
else
vlan_pf_idx=$(( pci_idx % (${#PCI_WHITELIST[@]} / 2) ))
fi
# 802.1Q base offset.
vlan_bs_off=1100
# 802.1Q PF PCI address offset.
vlan_pf_off=$(( vlan_pf_idx * 100 + vlan_bs_off ))
# 802.1Q VF PCI address offset.
vlan_vf_off=$(( vlan_pf_off + vf - 1 ))
# VLAN string.
vlan_str="vlan ${vlan_vf_off}"
# MAC string.
mac5="$(printf '%x' ${pci_idx})"
mac6="$(printf '%x' $(( vf - 1 )))"
mac_str="mac ba:dc:0f:fe:${mac5}:${mac6}"
# Set 802.1Q VLAN id and MAC address
ip link set ${pf} vf $(( vf - 1 )) ${mac_str} ${vlan_str}
ip link set ${pf} vf $(( vf - 1 )) trust on
ip link set ${pf} vf $(( vf - 1 )) spoof off
sleep .5
done
pci_idx=$(( pci_idx + 1 ))
;;
esac
fi
done
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