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 | awk '{IGNORECASE=1} /^eth.*'$1'/ {print $1; exit}')
  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 add $vif $i 2>/dev/null
  35   }
  36   ifconfig "$1" >/dev/null 2>&1 || [ "${1%[0-9]}" = "br" ]
  37   return $?
  38 }
  39
  40 wifi_init () {
  41   echo "# --- wifi init ---"
  42   hwaddr=$(nvram_get il0macaddr)
  43   [ -z "$hwaddr" ] && hwaddr=$(nvram_get wl0_hwaddr)
  44   if=$(mac2if $hwaddr)
  45   $DEBUG wlconf $if up
  46 }
  47
  48 configure () {
  49   type=$1
  50   echo "# --- $type ---"
  51
  52   if=$(nvram_get ${type}_ifname)
  53   if [ "${if%[0-9]}" = "ppp" ]; then
  54     if=$(nvram_get pppoe_ifname)
  55   fi
  56   if_valid $if || return
  57
  58   $DEBUG ifconfig $if down
  59   if [ "${if%[0-9]}" = "br" ]; then
  60     stp=$(nvram_get ${type}_stp)
  61     $DEBUG brctl delbr $if
  62     $DEBUG brctl addbr $if
  63     $DEBUG brctl setfd $if 0
  64     $DEBUG brctl stp $if $stp
  65     if_list=$(nvram_get ${type}_ifnames)
  66     for sif in $if_list; do {
  67       if_valid $sif || continue
  68       $DEBUG ifconfig $sif 0.0.0.0 up
  69       $DEBUG brctl addif $if $sif
  70     }; done
  71   fi
  72
  73   if_mac=$(nvram_get ${type}_hwaddr)
  74   [ -z "$if_mac" ] || $DEBUG ifconfig $if hw ether $if_mac
  75
  76   if_proto=$(nvram_get ${type}_proto)
  77   case "$if_proto" in
  78     static)
  79       if_ip=$(nvram_get ${type}_ipaddr)
  80       if_netmask=$(nvram_get ${type}_netmask)
  81       if_gateway=$(nvram_get ${type}_gateway)
  82
  83       ipcalc -s "$if_ip"      || return
  84       ipcalc -s "$if_netmask" || return
  85       $DEBUG ifconfig $if $if_ip netmask $if_netmask up
  86
  87       ipcalc -s "$if_gateway" || return
  88       $DEBUG route add default gw $if_gateway
  89
  90       [ -f /etc/resolv.conf ] && return
  91
  92       echo "# --- creating /etc/resolv.conf ---"
  93       for dns in $(nvram_get ${type}_dns); do {
  94         echo "nameserver $dns" >> /etc/resolv.conf
  95       }; done
  96     ;;
  97     dhcp)
  98       pidfile=/tmp/dhcp-${type}.pid
  99       if [ -f $pidfile ]; then
 100         $DEBUG kill $(cat $pidfile)
 101       fi
 102       $DEBUG udhcpc -i $if -b -p /tmp/dhcp-${type}.pid
 103     ;;
 104     pppoe)
 105       if_username=$(nvram_get ppp_username)
 106       if_password=$(nvram_get ppp_passwd)
 107       if_redial=$(nvram_get ppp_redialperiod)
 108       if_idletime=$(nvram_get ppp_idletime)
 109
 110       $DEBUG ifconfig $if 0.0.0.0 up
 111
 112       $DEBUG /sbin/pppoecd $if -u $if_username -p $if_password -i 0 -I $if_redial -T $if_idletime -k
 113     ;;
 114     *)
 115       echo "$if: $if_proto is not supported"
 116     ;;
 117   esac
 118 }
 119
 120 ### START NETWORKING ###
 121 wifi_init
 122
 123 $DEBUG vconfig set_name_type VLAN_PLUS_VID_NO_PAD
 124
 125 # hacks for 1.x hardware
 126 [ -z "$(nvram_get vlan0hwname)" ] && {
 127   echo "# 1.x HACK"
 128   vlan1hwname="et0"
 129   vlan2hwname="et0"
 130
 131   # we remap old device names to new
 132   # it's recommended that you continue to
 133   # use the old names to preserve backwards
 134   # compatibility
 135   remap () {
 136     eval $1=\"$(nvram_get $1 | awk '{
 137           gsub(/eth0/,"vlan2")
 138           gsub(/eth1/,"vlan1")
 139           print $0
 140     }')\"
 141   }
 142
 143   remap lan_ifname
 144   remap lan_ifnames
 145   remap wifi_ifname
 146   remap wifi_ifnames
 147   remap wan_ifname
 148   remap wan_ifnames
 149   remap pppoe_ifname
 150 }
 151
 152 # failsafe if reset is held
 153 [ "$FAILSAFE" = "true" ] && {
 154   lan_ifname="br0"
 155   lan_ifnames="vlan0 vlan2 eth1 eth2 eth3"
 156   lan_ipaddr="192.168.1.1"
 157   lan_netmask="255.255.255.0"
 158   lan_hwaddr="00:0B:AD:0A:DD:00"
 159   wan_ifname="none"
 160   wifi_ifname="none"
 161 }
 162
 163 # linksys bug has lan doing dhcp; force static
 164 lan_proto="static"
 165
 166 configure lan
 167 configure wifi
 168 configure wan
 169
 170 for route in $(nvram_get static_route); do {
 171       ip=${route%%:*} route=${route#*:}
 172  netmask=${route%%:*} route=${route#*:}
 173  gateway=${route%%:*} route=${route#*:}
 174   metric=${route%%:*} route=${route#*:}
 175       if=${route%%:*}
 176   $DEBUG route add -net $ip netmask $netmask gw $gateway metric $metric dev $if
 177 } done