root/etc/networking.sh

   1 #!/bin/sh
   2 # OpenWrt Networking script
   3 # $Id$
   4 # Copyright (c) 2004 Mike Baker <mbm at alt.org>
   5
   6 # to debug:
   7 # export DEBUG=echo
   8
   9 export PATH=/usr/bin:/bin:/usr/sbin:/sbin
  10
  11 # lookup an interface by mac address
  12 mac2if () {
  13   if=$(ifconfig -a | grep -i "$1" | grep -e "^eth" | awk '{print $1}')
  14   echo $if
  15 }
  16
  17 # allow env to override nvram
  18 nvram_get () {
  19  eval "echo \${$1:=\$(nvram get $1)}"
  20 }
  21
  22 # valid interface?
  23 if_valid () {
  24   [ "${1%[0-9]}" = "vlan" ] && {
  25     i=${1##vlan}
  26     hwname=$(nvram_get vlan${i}hwname)
  27     hwaddr=$(nvram_get ${hwname}macaddr)
  28     [ -z "$hwaddr" ] && return 1
  29
  30     vif=$(mac2if $hwaddr)
  31     echo "# vlan${i}: $hwname $hwaddr => $vif"
  32
  33     $DEBUG ifconfig $vif up
  34     #$DEBUG vconfig rem vlan${i}
  35     $DEBUG vconfig add $vif $i
  36   }
  37   ifconfig "$1" >/dev/null 2>&1 || [ "${1%[0-9]}" = "br" ]
  38   return $?
  39 }
  40
  41 wifi_init () {
  42   echo "# --- wifi init ---"
  43   hwaddr=$(nvram_get il0macaddr)
  44   [ -z "$hwaddr" ] && hwaddr=$(nvram_get wl0_hwaddr)
  45   if=$(mac2if $hwaddr)
  46   $DEBUG wlconf $if up
  47 }
  48
  49 configure () {
  50   type=$1
  51   echo "# --- $type ---"
  52
  53   if=$(nvram_get ${type}_ifname)
  54   if [ "${if%[0-9]}" = "ppp" ]; then
  55     if=$(nvram get pppoe_ifname)
  56   fi
  57   if_valid $if || return
  58
  59   if [ "${if%[0-9]}" = "br" ]; then
  60     $DEBUG ifconfig $if down
  61     $DEBUG brctl delbr $if
  62     $DEBUG brctl addbr $if
  63     $DEBUG brctl setfd $if 0
  64     if_list=$(nvram_get ${type}_ifnames)
  65     for sif in $if_list; do {
  66       if_valid $sif || continue
  67       $DEBUG ifconfig $sif 0.0.0.0 up
  68       $DEBUG brctl addif $if $sif
  69     }; done
  70   fi
  71
  72   if_mac=$(nvram_get ${type}_hwaddr)
  73   $DEBUG ifconfig $if hw ether $if_mac
  74
  75   if_proto=$(nvram_get ${type}_proto)
  76   case "$if_proto" in
  77     static)
  78       if_ip=$(nvram_get ${type}_ipaddr)
  79       if_netmask=$(nvram_get ${type}_netmask)
  80       if_gateway=$(nvram_get ${type}_gateway)
  81
  82       ipcalc -s "$if_ip"      || return
  83       ipcalc -s "$if_netmask" || return
  84       $DEBUG ifconfig $if $if_ip netmask $if_netmask up
  85
  86       ipcalc -s "$ip_gateway" || return
  87       $DEBUG route add default gw $ip_gateway
  88     ;;
  89     dhcp)
  90       pidfile=/tmp/dhcp-${type}.pid
  91       if [ -f $pidfile ]; then
  92         $DEBUG kill $(cat $pidfile)
  93       fi
  94       $DEBUG udhcpc -i $if -b -p /tmp/dhcp-${type}.pid
  95     ;;
  96     pppoe)
  97       if_username=$(nvram_get ppp_username)
  98       if_password=$(nvram_get ppp_passwd)
  99       if_redial=$(nvram_get ppp_redialperiod)
 100       if_idletime=$(nvram_get ppp_idletime)
 101
 102       $DEBUG ifconfig $if 0.0.0.0 up
 103
 104       $DEBUG pppd user "$if_username" password "$if_password" defaultroute
 105     ;;
 106     *)
 107       echo "$if: $if_proto is not supported"
 108     ;;
 109   esac
 110 }
 111
 112 ### START NETWORKING ###
 113 wifi_init
 114
 115 $DEBUG vconfig set_name_type VLAN_PLUS_VID_NO_PAD
 116
 117 # hacks for 1.x hardware
 118 [ -z "$(nvram_get vlan0hwname)" ] && {
 119   echo "# 1.x HACK"
 120   vlan1hwname="et0"
 121   vlan2hwname="et0"
 122
 123   # we remap old device names to new
 124   # it's recommended that you continue to
 125   # use the old names to preserve backwards
 126   # compatibility
 127   remap () {
 128     eval $1=\"$(nvram_get $1 | awk '{
 129           gsub(/eth0/,"vlan2")
 130           gsub(/eth1/,"vlan1")
 131           print $0
 132     }')\"
 133   }
 134
 135   remap lan_ifname
 136   remap lan_ifnames
 137   remap wifi_ifname
 138   remap wifi_ifnames
 139   remap wan_ifname
 140   remap wan_ifnames
 141   remap pppoe_ifname
 142 }
 143
 144 # failsafe if reset is held
 145 [ "$FAILSAFE" = "true" ] && {
 146   lan_ifname="br0"
 147   lan_ifnames="vlan0 vlan2 eth1 eth2 eth3"
 148   lan_ipaddr="192.168.1.1"
 149   lan_netmask="255.255.255.0"
 150   lan_hwaddr="00:0B:AD:0A:DD:00"
 151   wan_ifname="none"
 152   wifi_ifname="none"
 153 }
 154
 155 # linksys bug has lan doing dhcp; force static
 156 lan_proto="static"
 157
 158 configure lan
 159 configure wifi
 160 configure wan