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#!/bin/sh
#
# We get called like this:
# fcoe-up <network-device> <dcb|nodcb> <fabric|vn2vn>
#
# Note currently only nodcb is supported, the dcb option is reserved for
# future use.

PATH=/usr/sbin:/usr/bin:/sbin:/bin
type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
type ip_to_var >/dev/null 2>&1 || . /lib/net-lib.sh

# Huh? Missing arguments ??
[ -z "$1" -o -z "$2" ] && exit 1

netif=$1
dcb=$2
mode=$3
vlan="yes"

iflink=$(cat /sys/class/net/$netif/iflink)
ifindex=$(cat /sys/class/net/$netif/ifindex)
if [ "$iflink" != "$ifindex" ] ; then
    # Skip VLAN devices
    exit 0
fi

ip link set dev $netif up
linkup "$netif"

# Some fcoemon implementations expect --syslog=true
syslogopt="--syslog"
if fcoemon -h|grep syslog|grep -q yes; then
    fcoemonyes="$syslogopt=yes"
fi


netdriver=$(readlink -f /sys/class/net/$netif/device/driver)
netdriver=${netdriver##*/}

write_fcoemon_cfg() {
    [ -f /etc/fcoe/cfg-$netif ] && return
    echo FCOE_ENABLE=\"yes\" > /etc/fcoe/cfg-$netif
    if [ "$dcb" = "dcb" ]; then
        echo DCB_REQUIRED=\"yes\" >> /etc/fcoe/cfg-$netif
    else
        echo DCB_REQUIRED=\"no\" >> /etc/fcoe/cfg-$netif
    fi
    if [ "$vlan" = "yes" ]; then
	    echo AUTO_VLAN=\"yes\" >> /etc/fcoe/cfg-$netif
    else
	    echo AUTO_VLAN=\"no\" >> /etc/fcoe/cfg-$netif
    fi
    if [ "$mode" = "vn2vn" ] ; then
        echo MODE=\"vn2vn\" >> /etc/fcoe/cfg-$netif
    else
        echo MODE=\"fabric\" >> /etc/fcoe/cfg-$netif
    fi
}

if [ "$netdriver" = "bnx2x" ]; then
    # If driver is bnx2x, do not use /sys/module/fcoe/parameters/create but fipvlan
    modprobe 8021q
    udevadm settle --timeout=30
    # Sleep for 13 s to allow dcb negotiation
    sleep 13
    fipvlan "$netif" -c -s
    need_shutdown
    exit
fi
if [ "$dcb" = "dcb" ]; then
    # wait for lldpad to be ready
    i=0
    while [ $i -lt 60 ]; do
        lldptool -p && break
        info "Waiting for lldpad to be ready"
        sleep 1
        i=$(($i+1))
    done

    while [ $i -lt 60 ]; do
        dcbtool sc "$netif" dcb on && break
        info "Retrying to turn dcb on"
        sleep 1
        i=$(($i+1))
    done

    while [ $i -lt 60 ]; do
        dcbtool sc "$netif" pfc e:1 a:1 w:1 && break
        info "Retrying to turn dcb on"
        sleep 1
        i=$(($i+1))
    done

    while [ $i -lt 60 ]; do
        dcbtool sc "$netif" app:fcoe e:1 a:1 w:1 && break
        info "Retrying to turn fcoe on"
        sleep 1
        i=$(($i+1))
    done

    sleep 1
fi
write_fcoemon_cfg
fcoemon $syslogopt

need_shutdown