openwrt-xburst/target/default/target_skeleton/sbin/ifup

#!/bin/ash
. /etc/functions.sh
type=$1
debug "### ifup $type ###"

if=$(nvram get ${type}_ifname)
if [ "${if%%[0-9]}" = "ppp" ]; then
  if=$(nvram get pppoe_ifname)
fi

if_valid $if || return

mac=$(nvram get ${type}_hwaddr)
$DEBUG ifconfig $if down 2>&-
if [ "${if%%[0-9]}" = "br" ]; then
  stp=$(nvram get ${type}_stp)
  $DEBUG brctl delbr $if 2>&-
  $DEBUG brctl addbr $if
  $DEBUG brctl setfd $if 0
  $DEBUG brctl stp $if ${stp:-0}
  for sif in $(nvram get ${type}_ifnames); do {
    if_valid $sif || continue
    ${mac:+$DEBUG ifconfig $sif down hw ether $mac}
    $DEBUG ifconfig $sif 0.0.0.0 up
    $DEBUG brctl addif $if $sif
  } done
else
  ${mac:+$DEBUG ifconfig $if down hw ether $mac}
fi


if_proto=$(nvram get ${type}_proto)
case "$if_proto" in
  static)
    ip=$(nvram get ${type}_ipaddr)
    netmask=$(nvram get ${type}_netmask)
    gateway=$(nvram get ${type}_gateway)

    $DEBUG ifconfig $if $ip ${netmask:+netmask $netmask} broadcast + up
    ${gateway:+$DEBUG route add default gw $gateway}

    [ -f /etc/resolv.conf ] && return

    debug "# --- creating /etc/resolv.conf ---"
    for dns in $(nvram get ${type}_dns); do {
	echo "nameserver $dns" >> /etc/resolv.conf
    } done
  ;;
  dhcp)
    ip=$(nvram get ${type}_ipaddr)
    pidfile=/tmp/dhcp-${type}.pid
    if [ -f $pidfile ]; then
      $DEBUG kill $(cat $pidfile)
    fi
    ${DEBUG:-eval} "udhcpc -R -i $if ${ip:+-r $ip} -b -p $pidfile &" 
  ;;
  none|"")
  ;;
  *)
    [ -x "/sbin/ifup.${if_proto}" ] && { $DEBUG /sbin/ifup.${if_proto} $*; exit; }
    echo "### ifup $type: ignored ${type}_proto=\"$if_proto\" (not supported)"
  ;;
esac