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#!/bin/bash
#
# Initialize SRIOV virtual devices
#
# This is usually run automatically by systemd after a hardware activation
# event in udev has triggered a start of the rdma.service unit
port=1
function __get_parent_pci_dev()
{
pushd /sys/bus/pci/devices/$pci_dev >/dev/null 2>&1
ppci_dev=`ls -l physfn | cut -f 2 -d '/'`
popd >/dev/null 2>&1
}
function __get_parent_ib_dev()
{
ib_dev=`ls -l | awk '/'$ppci_dev'/ { print $9 }'`
}
function __get_parent_net_dev()
{
for netdev in /sys/bus/pci/devices/$ppci_dev/net/* ; do
if [ "$port" -eq `cat $netdev/dev_port` ]; then
netdev=`basename $netdev`
break
fi
done
}
function __get_vf_num()
{
pushd /sys/bus/pci/devices/$ppci_dev >/dev/null 2>&1
vf=`ls -l virtfn* | awk '/'$pci_dev'/ { print $9 }' | sed -e 's/virtfn//'`
popd >/dev/null 2>&1
}
function __en_sriov_set_vf()
{
pci_dev=$1
shift
[ "$1" = "port" ] && port=$2 && shift 2
# We find our parent device by the netdev registered port number,
# however, the netdev port numbers start at 0 while the port
# numbers on the card start at 1, so we subtract 1 from our
# configured port number to get the netdev number
let port--
# Now we need to fill in the necessary information to pass to the ip
# command
__get_parent_pci_dev
__get_parent_net_dev
__get_vf_num
# The rest is easy. Either the user passed valid arguments as options
# or they didn't
ip link set dev $netdev vf $vf $*
}
function __ib_sriov_set_vf()
{
pci_dev=$1
shift
[ "$1" = "port" ] && port=$2 && shift 2
guid=""
__get_parent_pci_dev
__get_parent_ib_dev
[ -f $ib_dev/iov/$pci_dev/ports/$port/gid_idx/0 ] || return
while [ -n "$1" ]; do
case $1 in
guid)
guid=$2
shift 2
;;
pkey)
shift 1
break
;;
*)
echo "Unknown option in $src"
shift
;;
esac
done
if [ -n "$guid" ]; then
guid_idx=`cat "$ib_dev/iov/$pci_dev/ports/$port/gid_idx/0"`
echo "$guid" > "$ib_dev/iov/ports/$port/admin_guids/$guid_idx"
fi
i=0
while [ -n "$1" ]; do
for pkey in $ib_dev/iov/ports/$port/pkeys/*; do
if [ `cat $pkey` = "$1" ]; then
echo `basename $pkey` > $ib_dev/iov/$pci_dev/ports/$port/pkey_idx/$i
let i++
break
fi
done
shift
done
}
[ -d /sys/class/infiniband ] || return
pushd /sys/class/infiniband >/dev/null 2>&1
if [ -z "$*" ]; then
src=/etc/rdma/sriov-vfs
[ -f "$src" ] || return
grep -v "^#" $src | while read -a args; do
# When we use read -a to read into an array, the index starts at
# 0, unlike below where the arg count starts at 1
port=1
next_arg=1
[ "${args[$next_arg]}" = "port" ] && next_arg=3
case ${args[$next_arg]} in
guid|pkey)
__ib_sriov_set_vf ${args[*]}
;;
mac|vlan|rate|spoofchk|enable)
__en_sriov_set_vf ${args[*]}
;;
*)
;;
esac
done
else
[ "$2" = "port" ] && next_arg=$4 || next_arg=$2
case $next_arg in
guid|pkey)
__ib_sriov_set_vf $*
;;
mac|vlan|rate|spoofchk|enable)
__en_sriov_set_vf $*
;;
*)
;;
esac
fi
popd >/dev/null 2>&1