2 # Copyright (C) 2006 OpenWrt.org
8 sysctl -n -e -w "$1=$2" >/dev/null || \
13 local iftype device iface ifaces ifn
14 for ifn in $interfaces; do
15 config_get iftype "$ifn" type
16 config_get iface "$ifn" ifname
18 bridge) config_get ifaces "$ifn" ifnames;;
20 config_get device "$ifn" device
21 for ifc in $device $iface $ifaces; do
22 [ ."$ifc" = ."$1" ] && {
33 local cfgfile="${1:-network}"
38 config_set "$2" auto 1
41 local iftype ifname device proto
42 config_get iftype "$CONFIG_SECTION" TYPE
45 append interfaces "$CONFIG_SECTION"
46 config_get proto "$CONFIG_SECTION" proto
47 config_get iftype "$CONFIG_SECTION" type
48 config_get ifname "$CONFIG_SECTION" ifname
49 config_get device "$CONFIG_SECTION" device "$ifname"
50 config_set "$CONFIG_SECTION" device "$device"
53 config_set "$CONFIG_SECTION" ifnames "$device"
54 config_set "$CONFIG_SECTION" ifname br-"$CONFIG_SECTION"
57 ( type "scan_$proto" ) >/dev/null 2>/dev/null && eval "scan_$proto '$CONFIG_SECTION'"
61 config_load "${cfgfile}"
67 [ "$1" = "$vif" ] || ifconfig "$1" >/dev/null 2>/dev/null || {
68 ifconfig "$vif" up 2>/dev/null >/dev/null || add_vlan "$vif"
69 $DEBUG vconfig add "$vif" "${1##*\.}"
75 # add dns entries if they are not in resolv.conf yet
81 # We may be called by pppd's ip-up which has a nonstandard umask set.
82 # Create an empty file here and force its permission to 0644, otherwise
83 # dnsmasq will not be able to re-read the resolv.conf.auto .
84 [ ! -f /tmp/resolv.conf.auto ] && {
85 touch /tmp/resolv.conf.auto
86 chmod 0644 /tmp/resolv.conf.auto
92 grep -qsF "nameserver $dns" /tmp/resolv.conf.auto || {
93 add="${add:+$add }$dns"
94 echo "nameserver $dns" >> /tmp/resolv.conf.auto
99 uci_set_state network "$cfg" dns "$add"
100 uci_set_state network "$cfg" resolv_dns "$add"
104 # remove dns entries of the given iface
109 [ -f /tmp/resolv.conf.auto ] && {
110 local dns=$(uci_get_state network "$cfg" resolv_dns)
112 sed -i -e "/^nameserver $dns$/d" /tmp/resolv.conf.auto
116 uci_revert_state network "$cfg" dns
117 uci_revert_state network "$cfg" resolv_dns
121 # sort the device list, drop duplicates
131 # Create the interface, if necessary.
132 # Return status 0 indicates that the setup_interface() call should continue
133 # Return status 1 means that everything is set up already.
135 prepare_interface() {
140 # if we're called for the bridge interface itself, don't bother trying
141 # to create any interfaces here. The scripts have already done that, otherwise
142 # the bridge interface wouldn't exist.
143 [ "br-$config" = "$iface" -o -e "$iface" ] && return 0;
145 ifconfig "$iface" 2>/dev/null >/dev/null && {
147 config_get proto "$config" proto
149 # make sure the interface is removed from any existing bridge and deconfigured,
150 # (deconfigured only if the interface is not set to proto=none)
152 [ "$proto" = none ] || ifconfig "$iface" 0.0.0.0
154 # Change interface MAC address if requested
155 [ -n "$vifmac" ] && {
156 ifconfig "$iface" down
157 ifconfig "$iface" hw ether "$vifmac" up
161 # Setup VLAN interfaces
162 add_vlan "$iface" && return 1
163 ifconfig "$iface" 2>/dev/null >/dev/null || return 0
167 config_get iftype "$config" type
171 config_get macaddr "$config" macaddr
172 [ -x /usr/sbin/brctl ] && {
173 # Disable IPv6 for bridge ports
174 do_sysctl net.ipv6.conf.$iface.disable_ipv6 1
175 [ "${iface##wlan}" != "$iface" ] && \
176 do_sysctl net.ipv6.conf.mon.$iface.disable_ipv6 1
178 ifconfig "br-$config" 2>/dev/null >/dev/null && {
179 local newdevs devices
180 config_get devices "$config" device
181 for dev in $(sort_list "$devices" "$iface"); do
182 append newdevs "$dev"
184 uci_set_state network "$config" device "$newdevs"
185 $DEBUG ifconfig "$iface" 0.0.0.0
186 $DEBUG brctl addif "br-$config" "$iface"
187 # Bridge existed already. No further processing necesary
190 config_get_bool stp "$config" stp 0
191 $DEBUG brctl addbr "br-$config"
192 $DEBUG brctl setfd "br-$config" 0
193 $DEBUG ifconfig "br-$config" up
194 $DEBUG ifconfig "$iface" 0.0.0.0
195 $DEBUG brctl addif "br-$config" "$iface"
196 $DEBUG brctl stp "br-$config" $stp
197 # Creating the bridge here will have triggered a hotplug event, which will
198 # result in another setup_interface() call, so we simply stop processing
199 # the current event at this point.
201 ifconfig "$iface" ${macaddr:+hw ether "${macaddr}"} up 2>/dev/null >/dev/null
209 set_interface_ifname() {
214 config_get device "$1" device
215 uci_set_state network "$config" ifname "$ifname"
216 uci_set_state network "$config" device "$device"
219 setup_interface_none() {
220 env -i ACTION="ifup" INTERFACE="$2" DEVICE="$1" PROTO=none /sbin/hotplug-call "iface" &
223 setup_interface_static() {
227 local ipaddr netmask ip6addr
228 config_get ipaddr "$config" ipaddr
229 config_get netmask "$config" netmask
230 config_get ip6addr "$config" ip6addr
231 [ -z "$ipaddr" -o -z "$netmask" ] && [ -z "$ip6addr" ] && return 1
233 local gateway ip6gw dns bcast metric
234 config_get gateway "$config" gateway
235 config_get ip6gw "$config" ip6gw
236 config_get dns "$config" dns
237 config_get bcast "$config" broadcast
238 config_get metric "$config" metric
240 [ -z "$ipaddr" ] || $DEBUG ifconfig "$iface" "$ipaddr" netmask "$netmask" broadcast "${bcast:-+}"
241 [ -z "$ip6addr" ] || $DEBUG ifconfig "$iface" add "$ip6addr"
242 [ -z "$gateway" ] || $DEBUG route add default gw "$gateway" ${metric:+metric $metric} dev "$iface"
243 [ -z "$ip6gw" ] || $DEBUG route -A inet6 add default gw "$ip6gw" ${metric:+metric $metric} dev "$iface"
244 [ -z "$dns" ] || add_dns "$config" $dns
246 config_get type "$config" TYPE
247 [ "$type" = "alias" ] && return 0
249 env -i ACTION="ifup" INTERFACE="$config" DEVICE="$iface" PROTO=static /sbin/hotplug-call "iface" &
252 setup_interface_alias() {
258 config_get cfg "$config" interface
259 [ "$parent" == "$cfg" ] || return 0
261 # parent device and ifname
262 local p_device p_type
263 config_get p_device "$cfg" device
264 config_get p_type "$cfg" type
266 # select alias ifname
267 local layer use_iface
268 config_get layer "$config" layer 2
269 case "$layer:$p_type" in
270 # layer 3: e.g. pppoe-wan or pptp-vpn
271 3:*) use_iface="$iface" ;;
273 # layer 2 and parent is bridge: e.g. br-wan
274 2:bridge) use_iface="br-$cfg" ;;
276 # layer 1: e.g. eth0 or ath0
277 *) use_iface="$p_device" ;;
282 config_get ctr "$parent" alias_count 0
284 config_set "$parent" alias_count "$ctr"
288 config_get list "$parent" aliases
289 append list "$config"
290 config_set "$parent" aliases "$list"
292 use_iface="$use_iface:$ctr"
293 set_interface_ifname "$config" "$use_iface"
296 config_get proto "$config" proto "static"
299 setup_interface_static "$use_iface" "$config"
302 echo "Unsupported type '$proto' for alias config '$config'"
314 [ -n "$config" ] || {
315 config=$(find_config "$iface")
316 [ "$?" = 0 ] || return 1
319 prepare_interface "$iface" "$config" "$vifmac" || return 0
321 [ "$iface" = "br-$config" ] && {
322 # need to bring up the bridge and wait a second for
323 # it to switch to the 'forwarding' state, otherwise
324 # it will lose its routes...
330 grep "$iface:" /proc/net/dev > /dev/null && {
331 local mtu macaddr txqueuelen
332 config_get mtu "$config" mtu
333 config_get macaddr "$config" macaddr
334 config_get txqueuelen "$config" txqueuelen
335 [ -n "$macaddr" ] && $DEBUG ifconfig "$iface" down
336 $DEBUG ifconfig "$iface" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} ${txqueuelen:+txqueuelen $txqueuelen} up
338 set_interface_ifname "$config" "$iface"
340 [ -n "$proto" ] || config_get proto "$config" proto
343 setup_interface_static "$iface" "$config"
346 # kill running udhcpc instance
347 local pidfile="/var/run/dhcp-${iface}.pid"
348 service_kill udhcpc "$pidfile"
350 local ipaddr netmask hostname proto1 clientid vendorid broadcast reqopts
351 config_get ipaddr "$config" ipaddr
352 config_get netmask "$config" netmask
353 config_get hostname "$config" hostname
354 config_get proto1 "$config" proto
355 config_get clientid "$config" clientid
356 config_get vendorid "$config" vendorid
357 config_get_bool broadcast "$config" broadcast 0
358 config_get reqopts "$config" reqopts
360 [ -z "$ipaddr" ] || \
361 $DEBUG ifconfig "$iface" "$ipaddr" ${netmask:+netmask "$netmask"}
363 # additional request options
365 for opt in $reqopts; do
366 append dhcpopts "-O $opt"
369 # don't stay running in background if dhcp is not the main proto on the interface (e.g. when using pptp)
370 [ "$proto1" != "$proto" ] && append dhcpopts "-n -q" || append dhcpopts "-O rootpath -R &"
371 [ "$broadcast" = 1 ] && broadcast="-O broadcast" || broadcast=
373 $DEBUG eval udhcpc -t 0 -i "$iface" \
374 ${ipaddr:+-r $ipaddr} \
375 ${hostname:+-H $hostname} \
376 ${clientid:+-c $clientid} \
377 ${vendorid:+-V $vendorid} \
378 -b -p "$pidfile" $broadcast \
382 setup_interface_none "$iface" "$config"
385 if ( eval "type setup_interface_$proto" ) >/dev/null 2>/dev/null; then
386 eval "setup_interface_$proto '$iface' '$config' '$proto'"
388 echo "Interface type $proto not supported."
395 stop_interface_dhcp() {
399 config_get ifname "$config" ifname
401 local lock="/var/lock/dhcp-${ifname}"
402 [ -f "$lock" ] && lock -u "$lock"
406 local pidfile="/var/run/dhcp-${ifname}.pid"
407 service_kill udhcpc "$pidfile"
409 uci -P /var/state revert "network.$config"
416 [ -x /usr/sbin/brctl ] || return 0
417 brctl show 2>/dev/null | grep "$dev" >/dev/null && {
418 # interface is still part of a bridge, correct that
420 for brdev in $(brctl show | awk '$2 ~ /^[0-9].*\./ { print $1 }'); do
421 brctl delif "$brdev" "$dev" 2>/dev/null >/dev/null
422 do_sysctl net.ipv6.conf.$dev.disable_ipv6 0
423 [ "${dev##wlan}" != "$dev" ] && \
424 do_sysctl net.ipv6.conf.mon.$dev.disable_ipv6 0