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#!/bin/bash
function die() {
echo "ERROR: $*" >&2
exit 1
}
function show_vfs() {
path=$1
netdev=$2
printf "\nVirtual Functions:\n%-2s %-12s %-9s %-12s %-17s %s\n" \
"ID" "PCI Addr" "PCI ID" "Driver" "MAC Addr" "Config"
for vf_path in ${path}/virtfn*; do
vf=$(basename $(readlink ${vf_path}))
vfid=$(basename ${vf_path//virtfn/})
line=$(ip link show dev ${netdev} | grep "vf ${vfid}")
driver=$(basename $(readlink ${vf_path}/driver))
pciid="$(cat ${vf_path}/vendor | cut -dx -f2):$(cat ${vf_path}/device | cut -dx -f2)"
mac=$(echo $line | sed -n -E -e 's/.*MAC ([0-9a-f:]+),.*/\1/p')
cfg=$(echo $line | cut -d, -f2-)
printf "%-2s %-12s %-9s %-12s %-17s%s\n" \
$vfid $vf $pciid $driver $mac "$cfg"
done
}
function get_pci_addr() {
local addr
if [ -d /sys/class/net/$2/device ]; then
addr=$(basename $(readlink /sys/class/net/${2}/device))
else
addr=$2
fi
if [ ! -d /sys/bus/pci/devices/${pci_addr} ]; then
die "PCI device $2 doesn't exist"
fi
eval "$1=${addr}"
}
function show () {
get_pci_addr pci_addr $1
path="/sys/bus/pci/devices/${pci_addr}"
if [ ! -f ${path}/sriov_numvfs ]; then
die "PCI device $1 is not SR-IOV device"
fi
printf "%-20s: %s\n" "PCI Address" ${pci_addr}
printf "%-20s: %s\n" "PCI ID" \
"$(cat ${path}/vendor | cut -dx -f2):$(cat ${path}/device | cut -dx -f2)"
printf "%-20s: %s\n" "Driver name" $(basename $(readlink ${path}/driver))
printf "%-20s: %s\n" "Driver Version" $(cat ${path}/driver/module/version)
printf "%-20s: %s\n" "PCI Link Speed (max)" "$(cat ${path}/current_link_speed) ($(cat ${path}/max_link_speed))"
printf "%-20s: %s\n" "PCI Link Width (max)" "$(cat ${path}/current_link_width) ($(cat ${path}/max_link_width))"
printf "%-20s: %s\n" "NUMA Node" $(cat ${path}/numa_node)
printf "%-20s: %s\n" "Number of VFs" $(cat ${path}/sriov_numvfs)
printf "%-20s: %s\n" "Total VFs" $(cat ${path}/sriov_totalvfs)
if [ -d ${path}/net/* ] ; then
netdev=$(basename ${path}/net/*)
netdev_path=${path}/net/${netdev}
printf "%-20s: %s\n" "Interface" ${netdev}
printf "%-20s: %s\n" "MAC Address" $(cat ${netdev_path}/address)
printf "%-20s: %s\n" "Speed" $(cat ${netdev_path}/speed)
printf "%-20s: %s\n" "State" $(cat ${netdev_path}/operstate)
fi
[ $(cat ${path}/sriov_numvfs) -gt 0 ] && show_vfs ${path} ${netdev}
}
function remove_all () {
get_pci_addr pci_addr $1
path="/sys/bus/pci/devices/${pci_addr}"
[ $(cat ${path}/sriov_numvfs) -gt 0 ] || die "No VFs configured on $1"
echo 0 | sudo tee ${path}/sriov_numvfs > /dev/null
echo "VFs removed..."
}
function create () {
get_pci_addr pci_addr $1
path="/sys/bus/pci/devices/${pci_addr}"
[ $(cat ${path}/sriov_numvfs) -gt 0 ] && die "VFs already configured on $1"
[ "0$2" -gt 0 ] || die "Please specify number of VFs to create"
echo $2 | sudo tee ${path}/sriov_numvfs > /dev/null
[ -d ${path}/net/* ] || die "No net device for $1"
netdev=$(basename ${path}/net/*)
netdev_path=${path}/net/${netdev}
mac_prefix=$(cat ${netdev_path}/address | cut -d: -f1,3,4,5,6 )
for vf_path in ${path}/virtfn*; do
vf=$(basename $(readlink ${vf_path}))
vfid=$(basename ${vf_path//virtfn/})
mac="${mac_prefix}:$(printf "%02x" ${vfid})"
sudo ip link set dev ${netdev} vf ${vfid} mac ${mac}
done
[ $(cat ${path}/sriov_numvfs) -gt 0 ] && show_vfs ${path} ${netdev}
}
function help() {
cat << __EOF__
$0 show <dev>
Displays information about <dev> where <dev> is PCI address
or linux interface name.
$0 remove-all <dev>
Remove all virtual functions from device <dev>.
$0 remove-all <dev> <num>
Create <num> virtual functions on device<dev>.
__EOF__
}
case $1 in
show)
show $2
;;
create)
create $2 $3
;;
remove-all)
remove_all $2
;;
help)
help $2
;;
*)
echo "Please specify command (show, create, remove-all)"
help
;;
esac
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