openwrt/target/default/target_skeleton/sbin/ifup

   1 #!/bin/ash
   2 . /etc/functions.sh
   3   type=$1
   4   debug "### ifup $type ###"
   5
   6   if=$(nvram get ${type}_ifname)
   7   if [ "${if%%[0-9]}" = "ppp" ]; then
   8     if=$(nvram get pppoe_ifname)
   9   fi
  10
  11   if_valid $if || return
  12
  13   mac=$(nvram get ${type}_hwaddr)
  14   $DEBUG ifconfig $if down 2>&-
  15   if [ "${if%%[0-9]}" = "br" ]; then
  16     stp=$(nvram get ${type}_stp)
  17     $DEBUG brctl delbr $if 2>&-
  18     $DEBUG brctl addbr $if
  19     $DEBUG brctl setfd $if 0
  20     $DEBUG brctl stp $if ${stp:-0}
  21     for sif in $(nvram get ${type}_ifnames); do {
  22       if_valid $sif || continue
  23       ${mac:+$DEBUG ifconfig $sif down hw ether $mac}
  24       $DEBUG ifconfig $sif 0.0.0.0 up
  25       $DEBUG brctl addif $if $sif
  26     } done
  27   else
  28     ${mac:+$DEBUG ifconfig $if down hw ether $mac}
  29   fi
  30
  31
  32   if_proto=$(nvram get ${type}_proto)
  33   case "$if_proto" in
  34     static)
  35       ip=$(nvram get ${type}_ipaddr)
  36       netmask=$(nvram get ${type}_netmask)
  37       gateway=$(nvram get ${type}_gateway)
  38
  39       $DEBUG ifconfig $if $ip ${netmask:+netmask $netmask} broadcast + up
  40       ${gateway:+$DEBUG route add default gw $gateway}
  41
  42       [ -f /etc/resolv.conf ] && return
  43
  44       debug "# --- creating /etc/resolv.conf ---"
  45       for dns in $(nvram get ${type}_dns); do {
  46         echo "nameserver $dns" >> /etc/resolv.conf
  47       } done
  48     ;;
  49     dhcp)
  50       ip=$(nvram get ${type}_ipaddr)
  51       pidfile=/tmp/dhcp-${type}.pid
  52       if [ -f $pidfile ]; then
  53         $DEBUG kill $(cat $pidfile)
  54       fi
  55       ${DEBUG:-eval} "udhcpc -R -i $if ${ip:+-r $ip} -b -p $pidfile &"
  56     ;;
  57     none|"")
  58         # pppoe is handled by /etc/init.d/S50pppoe
  59     ;;
  60     *)
  61       echo "### ifup $type: ignored ${type}_proto=\"$if_proto\" (not supported)"
  62     ;;
  63   esac