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 $pidfile &"
  56   ;;
  57   none|"")
  58   ;;
  59   *)
  60     [ -x "/sbin/ifup.${if_proto}" ] && { $DEBUG /sbin/ifup.${if_proto} $*; exit; }
  61     echo "### ifup $type: ignored ${type}_proto=\"$if_proto\" (not supported)"
  62   ;;
  63 esac