openwrt/package/base-files/default/etc/hotplug.d/net/10-net

   1 #!/bin/sh
   2 setup_eth()
   3 {
   4         for part in $(nvram get unused_ifnames); do
   5                 [ "$part" = "$INTERFACE" ] && exit 0
   6         done
   7         ifconfig "$INTERFACE" up 2>&- >&-
   8 }
   9
  10 find_name()
  11 {
  12         pppoa_ifname="atm0" # hack for ppp over atm, which has no ${proto}_ifname
  13         interfaces="lan wan wifi $(nvram get ifnames)"
  14         for ifname in $interfaces; do
  15                 IFTYPE="${ifname}"
  16                 IFPROTO="$(nvram get ${IFTYPE}_proto)"
  17                 IFACE="$(nvram get ${IFTYPE}_ifname)"
  18                 case "$IFPROTO" in
  19                         ""|none);;
  20                         static|dhcp)
  21                                 [ "${IFACE}" = "$INTERFACE" ] && return 0
  22                                 [ "${IFACE%%[0-9]*}" = "br" ] && {
  23                                         for part in $(nvram get ${IFTYPE}_ifnames); do
  24                                                 [ "$part" = "$INTERFACE" ] && return 0
  25                                         done
  26                                 }
  27                         ;;
  28                         *)
  29                                 [ "$(nvram get ${IFPROTO}_ifname)" = "$INTERFACE" \
  30                                   -a -x /sbin/ifup.${IFPROTO} ] && return 0
  31                         ;;
  32                 esac
  33         done
  34         IFACE=""
  35         IFTYPE=""
  36         IFPROTO=""
  37         return 255
  38 }
  39
  40 do_ifup() {
  41         if="$3"
  42         if_proto="$(nvram get ${2}_proto)"
  43
  44         pidfile=/var/run/${if}.pid
  45         [ -f $pidfile ] && $DEBUG kill $(cat $pidfile)
  46
  47         case "$1" in
  48                 static)
  49                         ip=$(nvram get ${2}_ipaddr)
  50                         ip6=$(nvram get ${2}_ip6addr)
  51                         netmask=$(nvram get ${2}_netmask)
  52                         gateway=$(nvram get ${2}_gateway)
  53
  54                         $DEBUG ifconfig $if $ip ${netmask:+netmask $netmask} broadcast + up
  55                         [ -n "$ip6" ] && $DEBUG ifconfig $if add $ip6
  56
  57                         ${gateway:+$DEBUG route add default gw $gateway}
  58
  59                         [ -f /tmp/resolv.conf ] || {
  60                                 debug "# --- creating /tmp/resolv.conf ---"
  61                                 for dns in $(nvram get ${2}_dns); do
  62                                         echo "nameserver $dns" >> /tmp/resolv.conf
  63                                 done
  64                         }
  65
  66                         env -i ACTION="ifup" INTERFACE="${2}" PROTO=static /sbin/hotplug "iface" &
  67                 ;;
  68                 dhcp)
  69                         DHCP_IP=$(nvram get ${2}_ipaddr)
  70                         DHCP_NETMASK=$(nvram get ${2}_netmask)
  71                         $DEBUG ifconfig $if $ip ${netmask:+netmask $netmask} broadcast + up
  72
  73                         DHCP_ARGS="-i $if ${DHCP_IP:+-r $DHCP_IP} -b -p $pidfile"
  74                         DHCP_HOSTNAME=$(nvram get ${2}_hostname)
  75                         DHCP_HOSTNAME=${DHCP_HOSTNAME%%.*}
  76                         [ -z $DHCP_HOSTNAME ] || DHCP_ARGS="$DHCP_ARGS -H $DHCP_HOSTNAME"
  77                         [ "$if_proto" = "pptp" ] && DHCP_ARGS="$DHCP_ARGS -n -q" || DHCP_ARGS="$DHCP_ARGS -R &"
  78                         oldpid=$(cat $pidfile)
  79                         ${DEBUG:-eval} "udhcpc $DHCP_ARGS"
  80                         pidof udhcpc | grep "$oldpid" >&- 2>&- && {
  81                                 sleep 1
  82                                 kill -9 $oldpid
  83                         }
  84                         # hotplug events are handled by /usr/share/udhcpc/default.script
  85                 ;;
  86                 *)
  87                         if [ -x "/sbin/ifup.$1" ]; then
  88                                 ( $DEBUG . /sbin/ifup.$1 ${2} $3 )
  89                         fi
  90                 ;;
  91         esac
  92 }
  93
  94 do_register()
  95 {
  96         case "${INTERFACE%%[0-9]*}" in
  97                 eth) setup_eth;;
  98         esac
  99
 100         [ -z "$IFTYPE" -o -z "$IFPROTO" ] && {
 101                 find_name || {
 102                         case "${INTERFACE%%[0-9]*}" in
 103                                 wds)
 104                                         for tmp in lan wifi; do
 105                                                 [ -z "$IFPROTO" ] && [ "$(nvram get ${tmp}_ifname)" = "br0" ] && {
 106                                                         IFPROTO="$(nvram get ${tmp}_proto)"
 107                                                         IFTYPE="${tmp}"
 108                                                 }
 109                                         done
 110                                         [ -z "$IFPROTO" ] && return 0
 111                                 ;;
 112                                 atm)
 113                                         for tmp in lan wan wifi $(nvram get ifnames); do
 114                                                 [ "$(nvram get ${tmp}_proto)" = "pppoa" ] && {
 115                                                         do_ifup "pppoa" "$tmp" "$INTERFACE"
 116                                                         return 0
 117                                                 }
 118                                         done
 119                                 ;;
 120                                 *)
 121                                         return 0
 122                                 ;;
 123                         esac
 124                 }
 125         }
 126
 127         case "${INTERFACE%%[0-9]*}" in
 128                 ppp|atm);;
 129                 *)
 130                         mac=$(nvram get ${IFTYPE}_hwaddr)
 131                         ${mac:+$DEBUG ifconfig $INTERFACE down hw ether $mac}
 132                 ;;
 133         esac
 134
 135         if="$(nvram get ${IFTYPE}_ifname)"
 136         if [ "${if%%[0-9]}" = "br" ]; then
 137                 if_valid "$INTERFACE" && {
 138                         ifconfig "$if" 2>&- >&- || {
 139                                 stp=$(nvram get ${IFTYPE}_stp)
 140                                 $DEBUG brctl addbr "$if"
 141                                 $DEBUG brctl setfd "$if" 0
 142                                 $DEBUG brctl stp "$if" "${stp:-0}"
 143                         }
 144
 145                         if [ "$INTERFACE" != "$if" ]; then
 146                                 $DEBUG ifconfig "$INTERFACE" 0.0.0.0 up
 147                                 brctl addif "$if" "$INTERFACE"
 148                         else
 149                                 do_ifup "$IFPROTO" "$IFTYPE" "$if"
 150                         fi
 151                 }
 152         else
 153                 [ "${INTERFACE%%[0-9]*}" = "ppp" ] || do_ifup "$IFPROTO" "$IFTYPE" "$if"
 154         fi
 155 }
 156
 157 do_unregister() {
 158         [ -z "$IFTYPE" -o -z "$IFPROTO" ] && find_name
 159         [ -z "$IFTYPE" -o -z "$IFPROTO" ] && return 0
 160
 161         [ "${IFACE%%[0-9]*}" = "br" ] && {
 162                 if [ "$INTERFACE" != "$IFACE" ]; then
 163                         brctl delif "$IFACE" "$INTERFACE" 2>&- >&-
 164                 else
 165                         brctl delbr "$IFACE" 2>&- >&-
 166                 fi
 167         }
 168
 169         case "$IFPROTO" in
 170                 pppoe|pppoa|pptp)
 171                         killall pppd 2>&- >&-
 172                 ;;
 173                 dhcp)
 174                         [ -f /var/run/${INTERFACE}.pid ] && kill "$(cat /var/run/${INTERFACE}.pid)" 2>&- >&-
 175                 ;;
 176         esac
 177
 178         [ "${INTERFACE%%[0-9]*}" = "atm" ] || ifconfig "$INTERFACE" 0.0.0.0 down 2>&-
 179 }
 180
 181 case "$ACTION" in
 182         add|register) do_register;;
 183         remove|unregister) do_unregister;;
 184 esac