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#!/usr/bin/env bash
# It adapts /etc/default/ovs-dpdk file
# generated mainly from devstack/libs/ovs-dpdk
# it will modify / tune variables, which are not configured directly
source /etc/default/ovs-dpdk
if [ $OVS_SOCKET_MEM == "auto" ] ; then
for d in /sys/devices/system/node/node? ; do
if [ $OVS_SOCKET_MEM == "auto" ]; then
OVS_SOCKET_MEM=2048
else
OVS_SOCKET_MEM=$OVS_SOCKET_MEM,2048
fi
done
fi
sudo sed "s#OVS_SOCKET_MEM=.*#OVS_SOCKET_MEM=$OVS_SOCKET_MEM#" -i /etc/default/ovs-dpdk
# Creates an array of pci addres to interface names delimeted by # e.g. <pci_address>#<interface name>
PAIRS=( `ls -al /sys/class/net/* | grep pci | rev | awk '{print $1;}' | cut -d '/' -f 1,3 | rev | sed s'/\//#/'` )
# Populates OVS_BRIDGE_MAPPINGS if $PHYSICAL_NETWORK and $OVS_PHYSICAL_BRIDGE are used instead.
if [[ "$OVS_DATAPATH_TYPE" != "" ]] && [[ "$OVS_BRIDGE_MAPPINGS" = "" ]] && [[ "$PHYSICAL_NETWORK" != "" ]] && [[ "$OVS_PHYSICAL_BRIDGE" != "" ]]; then
OVS_BRIDGE_MAPPINGS=$PHYSICAL_NETWORK:$OVS_PHYSICAL_BRIDGE
fi
if [[ -z "$OVS_DPDK_PORT_MAPPINGS" ]]; then
OVS_BRIDGES=${OVS_BRIDGE_MAPPINGS//,/ }
ARRAY=( $OVS_BRIDGES )
for net in "${ARRAY[@]}"; do
bridge="${net##*:}"
nic=${bridge/br-/}
if [[ -z "$OVS_DPDK_PORT_MAPPINGS" ]]; then
OVS_DPDK_PORT_MAPPINGS=$nic:$bridge
else
OVS_DPDK_PORT_MAPPINGS=$OVS_DPDK_PORT_MAPPINGS,$nic:$bridge
fi
done
fi
MAPPINGS=${OVS_DPDK_PORT_MAPPINGS//,/ }
ARRAY=( $MAPPINGS )
NICS=""
for net in "${ARRAY[@]}"; do
nic="${net%%:*}"
bridge="${net##*:}"
printf "%s in %s\n" "$KEY" "$VALUE"
for pair in "${PAIRS[@]}"; do
if [[ $nic == `echo $pair | cut -f 2 -d "#"` ]]; then
if [[ $NICS == "" ]]; then
NICS=$pair
else
NICS=$NICS,$pair
fi
fi
done
done
sudo sed "s/OVS_PCI_MAPPINGS=.*/OVS_PCI_MAPPINGS=$NICS/" -i /etc/default/ovs-dpdk
sudo sed "s/OVS_BRIDGE_MAPPINGS=.*/OVS_BRIDGE_MAPPINGS=$OVS_BRIDGE_MAPPINGS/" -i /etc/default/ovs-dpdk
sudo sed "s/OVS_DPDK_PORT_MAPPINGS=.*/OVS_DPDK_PORT_MAPPINGS=$OVS_DPDK_PORT_MAPPINGS/" -i /etc/default/ovs-dpdk
OVS_PMD_CORE_MASK=$(echo $OVS_PMD_CORE_MASK | sed 's/^0x//')
if [ $OVS_PMD_CORE_MASK -eq 4 ]; then
#default value, check for siblings in case of hyperthreading enabled
SIBLINGS=""
RESULT=0
FILE="/sys/devices/system/cpu/cpu3/topology/thread_siblings_list"
if [ -e $FILE ]; then
SIBLINGS=`cat $FILE`
else
echo "warning: don't know how to check siblings"
SIBLINGS=3
fi
for SIBLING in $(echo $SIBLINGS | sed -n 1'p' | tr ',' '\n'); do
SIBLING_CORE=`echo "obase=10;$((1<<($SIBLING-1)))" | bc`
RESULT=$(($RESULT | $SIBLING_CORE))
done
OVS_PMD_CORE_MASK=`printf "%x" $RESULT`
fi
sudo sed "s#OVS_PMD_CORE_MASK=.*#OVS_PMD_CORE_MASK=$OVS_PMD_CORE_MASK#" -i /etc/default/ovs-dpdk
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