l2fwd

#!/bin/sh

. $(dirname ${0})/dpdkgen.cfg

## Check number of lcores
_ncores=`cat /proc/cpuinfo | grep -w processor | wc -l`
if [ "${_ncores}" -lt 2 ]; then
    echo "${0##*/} needs at least 2 CPUs to run (3 CPUs recomended)."
    echo "Please increase the number of CPUs and try again."
    exit 1
fi

#################################################################
## Mount HugeTLBfs
_mount=`mount | grep hugetlbfs`
if [ -z "${_mount}" ]; then
    echo "Mounting HugeTLBfs to ${TLBFS_DIR}..."
    sudo mkdir -p ${TLBFS_DIR}
    sudo mount -t hugetlbfs none ${TLBFS_DIR}
fi

## Configure huge pages
_nr_pages=`cat /proc/sys/vm/nr_hugepages`
if [ "${_nr_pages}" -eq 0 ]; then
    echo "Configuring ${NB_HUGEPAGES} huge pages..."
    sudo -s bash -c "echo ${NB_HUGEPAGES} > /proc/sys/vm/nr_hugepages"
fi

## Load Kernel Modules
if ! lsmod | grep -w uio >/dev/null; then
    echo "Loading uio kernel module..."
    sudo modprobe uio
fi
for module in rte_kni igb_uio; do
    if ! lsmod | grep -w ${module} >/dev/null; then
        echo "Loading ${module} kernel module..."
        sudo insmod ${PKTGEN_SDK}/${PKTGEN_TARGET}/kmod/${module}.ko
    fi
done


#################################################################
## Re-bind NIC to DPDK Drivers
sudo ifconfig ${VM_IF} down
sudo -E ${BIND} -b igb_uio ${_pci}


#################################################################
## Start l2fwd
# Clear huge tables
sudo rm -f "${TLBFS_DIR}/pgmap*"

if [ "${_ncores}" -gt 2 ]; then
    sudo ${L2FWD} -c 7 -n 4 -- -q 8 -p 1
elif [ "${_ncores}" -gt 1 ]; then
    sudo ${L2FWD} -c 3 -n 4 -- -q 8 -p 1
fi


#################################################################
## Re-bind Interface to Linux Driver
sudo -E ${BIND} -b ${_drv} ${_pci}
#sudo -E ${BIND} --status

#################################################################
## Remove Kernel Modules
#sudo rmmod rte_kni.ko
#sudo rmmod igb_uio.ko

#################################################################
## Configure Linux Interface
sudo ifconfig ${VM_IF} ${_ip} netmask ${_mask}
sudo ifconfig ${VM_IF} up

#sudo ifconfig ${VM_IF}