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