#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
#
# Supported formats:
# fcoe=<networkdevice>:<dcb|nodcb>
# fcoe=<macaddress>:<dcb|nodcb>
#
# Note currently only nodcb is supported, the dcb option is reserved for
# future use.
#
# Note letters in the macaddress must be lowercase!
#
# Examples:
# fcoe=eth0:nodcb
# fcoe=4a:3f:4c:04:f8:d7:nodcb

[ -z "$fcoe" ] && fcoe=$(getarg fcoe=)

# If it's not set we don't continue
[ -z "$fcoe" ] && return

parse_fcoe_opts() {
    local IFS=:
    set $fcoe

    case $# in
        2)
            fcoe_interface=$1
            fcoe_dcb=$2
            ;;
        7)
            fcoe_mac=$1:$2:$3:$4:$5:$6
            fcoe_dcb=$7
            ;;
        *)
            die "Invalid arguments for fcoe="
            ;;
    esac
}

parse_fcoe_opts

if [ "$fcoe_dcb" != "nodcb" -a "$fcoe_dcb" != "dcb" ] ; then
    die "Invalid FCoE DCB option: $fcoe_dcb"
fi

# FCoE actually supported?
[ -e /sys/module/fcoe/parameters/create ] || modprobe fcoe || die "FCoE requested but kernel/initrd does not support FCoE"