2 # Copyright (C) 2006-2011 OpenWrt.org
8 sysctl -n -e -w "$1=$2" >/dev/null || \
17 for fam in ipv4 ipv6; do
18 if [ -d /proc/sys/net/$fam ]; then
20 for key in /proc/sys/net/$fam/*/$ifn/*; do
22 config_get val "$cfg" "${fam}_${key##*/}"
23 [ -n "$val" ] && echo -n "$val" > "$key"
30 local iftype device iface ifaces ifn
31 for ifn in $interfaces; do
32 config_get iftype "$ifn" type
33 config_get iface "$ifn" ifname
35 bridge) config_get ifaces "$ifn" ifnames;;
37 config_get device "$ifn" device
38 for ifc in $device $iface $ifaces; do
39 [ ."$ifc" = ."$1" ] && {
50 local cfgfile="${1:-network}"
55 config_set "$2" auto 1
58 local iftype ifname device proto
59 config_get iftype "$CONFIG_SECTION" TYPE
62 append interfaces "$CONFIG_SECTION"
63 config_get proto "$CONFIG_SECTION" proto
64 config_get iftype "$CONFIG_SECTION" type
65 config_get ifname "$CONFIG_SECTION" ifname
66 config_get device "$CONFIG_SECTION" device "$ifname"
67 config_set "$CONFIG_SECTION" device "$device"
70 config_set "$CONFIG_SECTION" ifnames "$device"
71 config_set "$CONFIG_SECTION" ifname br-"$CONFIG_SECTION"
74 ( type "scan_$proto" ) >/dev/null 2>/dev/null && eval "scan_$proto '$CONFIG_SECTION'"
78 config_load "${cfgfile}"
84 [ "$1" = "$vif" ] || ifconfig "$1" >/dev/null 2>/dev/null || {
85 ifconfig "$vif" up 2>/dev/null >/dev/null || add_vlan "$vif"
86 $DEBUG vconfig add "$vif" "${1##*\.}"
92 # add dns entries if they are not in resolv.conf yet
98 # We may be called by pppd's ip-up which has a nonstandard umask set.
99 # Create an empty file here and force its permission to 0644, otherwise
100 # dnsmasq will not be able to re-read the resolv.conf.auto .
101 [ ! -f /tmp/resolv.conf.auto ] && {
102 touch /tmp/resolv.conf.auto
103 chmod 0644 /tmp/resolv.conf.auto
109 grep -qsE "^nameserver ${dns//./\\.}$" /tmp/resolv.conf.auto || {
110 add="${add:+$add }$dns"
111 echo "nameserver $dns" >> /tmp/resolv.conf.auto
116 uci_toggle_state network "$cfg" dns "$add"
117 uci_toggle_state network "$cfg" resolv_dns "$add"
121 # remove dns entries of the given iface
126 [ -f /tmp/resolv.conf.auto ] && {
127 local dns=$(uci_get_state network "$cfg" resolv_dns)
129 sed -i -e "/^nameserver ${dns//./\\.}$/d" /tmp/resolv.conf.auto
133 uci_revert_state network "$cfg" dns
134 uci_revert_state network "$cfg" resolv_dns
138 # sort the device list, drop duplicates
148 prepare_interface_bridge() {
152 # Create the interface, if necessary.
153 # Return status 0 indicates that the setup_interface() call should continue
154 # Return status 1 means that everything is set up already.
156 prepare_interface() {
161 # if we're called for the bridge interface itself, don't bother trying
162 # to create any interfaces here. The scripts have already done that, otherwise
163 # the bridge interface wouldn't exist.
164 [ "br-$config" = "$iface" -o -e "$iface" ] && return 0;
166 ifconfig "$iface" 2>/dev/null >/dev/null && {
168 config_get proto "$config" proto
170 # make sure the interface is removed from any existing bridge and deconfigured,
171 # (deconfigured only if the interface is not set to proto=none)
174 local mtu macaddr txqueuelen
175 config_get mtu "$config" mtu
176 [ -n "$macaddr" ] || config_get macaddr "$config" macaddr
177 config_get txqueuelen "$config" txqueuelen
178 [ -n "$macaddr" ] && $DEBUG ifconfig "$iface" down
179 $DEBUG ifconfig "$iface" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} ${txqueuelen:+txqueuelen $txqueuelen} up
181 [ "$proto" = none ] || ifconfig "$iface" 0.0.0.0
183 # Apply sysctl settings
184 map_sysctls "$config" "$iface"
187 # Setup VLAN interfaces
188 add_vlan "$iface" && return 1
189 ifconfig "$iface" 2>/dev/null >/dev/null || return 0
193 config_get iftype "$config" type
197 config_get macaddr "$config" macaddr
198 [ -x /usr/sbin/brctl ] && {
199 ifconfig "br-$config" 2>/dev/null >/dev/null && {
200 local newdevs devices
201 config_get devices "$config" device
202 for dev in $(sort_list "$devices" "$iface"); do
203 append newdevs "$dev"
205 uci_toggle_state network "$config" device "$newdevs"
206 $DEBUG ifconfig "$iface" 0.0.0.0
207 $DEBUG do_sysctl "net.ipv6.conf.$iface.disable_ipv6" 1
208 $DEBUG brctl addif "br-$config" "$iface"
209 # Bridge existed already. No further processing necesary
211 local stp igmp_snooping
212 config_get_bool stp "$config" stp 0
213 config_get_bool igmp_snooping "$config" igmp_snooping 1
214 $DEBUG brctl addbr "br-$config"
215 $DEBUG brctl setfd "br-$config" 0
216 $DEBUG ifconfig "$iface" 0.0.0.0
217 $DEBUG do_sysctl "net.ipv6.conf.$iface.disable_ipv6" 1
218 $DEBUG brctl addif "br-$config" "$iface"
219 $DEBUG brctl stp "br-$config" $stp
220 [ -z "$macaddr" ] && macaddr="$(cat /sys/class/net/$iface/address)"
221 echo $igmp_snooping > /sys/devices/virtual/net/br-$config/bridge/multicast_snooping 2>/dev/null
222 $DEBUG ifconfig "br-$config" hw ether $macaddr up
223 # Creating the bridge here will have triggered a hotplug event, which will
224 # result in another setup_interface() call, so we simply stop processing
225 # the current event at this point.
227 ifconfig "$iface" ${macaddr:+hw ether "${macaddr}"} up 2>/dev/null >/dev/null
235 set_interface_ifname() {
240 config_get device "$1" device
241 uci_toggle_state network "$config" ifname "$ifname"
242 uci_toggle_state network "$config" device "$device"
245 setup_interface_none() {
246 env -i ACTION="ifup" INTERFACE="$2" DEVICE="$1" PROTO=none /sbin/hotplug-call "iface" &
249 setup_interface_static() {
253 local ipaddr netmask ip6addr
254 config_get ipaddr "$config" ipaddr
255 config_get netmask "$config" netmask
256 config_get ip6addr "$config" ip6addr
257 [ -z "$ipaddr" -o -z "$netmask" ] && [ -z "$ip6addr" ] && return 1
259 local gateway ip6gw dns bcast metric
260 config_get gateway "$config" gateway
261 config_get ip6gw "$config" ip6gw
262 config_get dns "$config" dns
263 config_get bcast "$config" broadcast
264 config_get metric "$config" metric
268 *:*) ip6addr="$ip6addr/64" ;;
271 [ -z "$ipaddr" ] || $DEBUG ifconfig "$iface" "$ipaddr" netmask "$netmask" broadcast "${bcast:-+}"
272 [ -z "$ip6addr" ] || $DEBUG ifconfig "${iface%:*}" add "$ip6addr"
273 [ -z "$gateway" ] || $DEBUG route add default gw "$gateway" ${metric:+metric $metric} dev "$iface"
274 [ -z "$ip6gw" ] || $DEBUG route -A inet6 add default gw "$ip6gw" ${metric:+metric $metric} dev "${iface%:*}"
275 [ -z "$dns" ] || add_dns "$config" $dns
277 config_get type "$config" TYPE
278 [ "$type" = "alias" ] && return 0
280 env -i ACTION="ifup" INTERFACE="$config" DEVICE="$iface" PROTO=static /sbin/hotplug-call "iface" &
283 setup_interface_alias() {
289 config_get cfg "$config" interface
290 [ "$parent" == "$cfg" ] || return 0
292 # parent device and ifname
293 local p_device p_type
294 config_get p_device "$cfg" device
295 config_get p_type "$cfg" type
297 # select alias ifname
298 local layer use_iface
299 config_get layer "$config" layer 2
300 case "$layer:$p_type" in
301 # layer 3: e.g. pppoe-wan or pptp-vpn
302 3:*) use_iface="$iface" ;;
304 # layer 2 and parent is bridge: e.g. br-wan
305 2:bridge) use_iface="br-$cfg" ;;
307 # layer 1: e.g. eth0 or ath0
308 *) use_iface="$p_device" ;;
313 config_get ctr "$parent" alias_count 0
315 config_set "$parent" alias_count "$ctr"
319 config_get list "$parent" aliases
320 append list "$config"
321 config_set "$parent" aliases "$list"
323 use_iface="$use_iface:$ctr"
324 set_interface_ifname "$config" "$use_iface"
327 config_get proto "$config" proto "static"
330 setup_interface_static "$use_iface" "$config"
333 echo "Unsupported type '$proto' for alias config '$config'"
345 [ -n "$config" ] || {
346 config=$(find_config "$iface")
347 [ "$?" = 0 ] || return 1
350 prepare_interface "$iface" "$config" "$vifmac" || return 0
352 [ "$iface" = "br-$config" ] && {
353 # need to bring up the bridge and wait a second for
354 # it to switch to the 'forwarding' state, otherwise
355 # it will lose its routes...
361 set_interface_ifname "$config" "$iface"
363 [ -n "$proto" ] || config_get proto "$config" proto
366 setup_interface_static "$iface" "$config"
369 # kill running udhcpc instance
370 local pidfile="/var/run/dhcp-${iface}.pid"
372 SERVICE_PID_FILE="$pidfile" \
373 service_stop /sbin/udhcpc
375 local ipaddr netmask hostname proto1 clientid vendorid broadcast reqopts
376 config_get ipaddr "$config" ipaddr
377 config_get netmask "$config" netmask
378 config_get hostname "$config" hostname
379 config_get proto1 "$config" proto
380 config_get clientid "$config" clientid
381 config_get vendorid "$config" vendorid
382 config_get_bool broadcast "$config" broadcast 0
383 config_get reqopts "$config" reqopts
385 [ -z "$ipaddr" ] || \
386 $DEBUG ifconfig "$iface" "$ipaddr" ${netmask:+netmask "$netmask"}
388 # additional request options
389 local opt dhcpopts daemonize
390 for opt in $reqopts; do
391 append dhcpopts "-O $opt"
394 # don't stay running in background if dhcp is not the main proto on the interface (e.g. when using pptp)
395 [ "$proto1" != "$proto" ] && {
396 append dhcpopts "-n -q"
398 append dhcpopts "-O rootpath -R"
401 [ "$broadcast" = 1 ] && broadcast="-O broadcast" || broadcast=
403 SERVICE_DAEMONIZE=$daemonize \
404 SERVICE_PID_FILE="$pidfile" \
405 service_start /sbin/udhcpc -t 0 -i "$iface" \
406 ${ipaddr:+-r $ipaddr} \
407 ${hostname:+-H $hostname} \
408 ${clientid:+-c $clientid} \
409 ${vendorid:+-V $vendorid} \
410 -b -p "$pidfile" $broadcast \
414 setup_interface_none "$iface" "$config"
417 if ( eval "type setup_interface_$proto" ) >/dev/null 2>/dev/null; then
418 eval "setup_interface_$proto '$iface' '$config' '$proto'"
420 echo "Interface type $proto not supported."
427 stop_interface_dhcp() {
431 config_get ifname "$config" ifname
433 local lock="/var/lock/dhcp-${ifname}"
434 [ -f "$lock" ] && lock -u "$lock"
438 SERVICE_PID_FILE="/var/run/dhcp-${ifname}.pid" \
439 service_stop /sbin/udhcpc
441 uci -P /var/state revert "network.$config"
448 [ -x /usr/sbin/brctl ] || return 0
449 brctl show 2>/dev/null | grep "$dev" >/dev/null && {
450 # interface is still part of a bridge, correct that
452 for brdev in $(brctl show | awk '$2 ~ /^[0-9].*\./ { print $1 }'); do
453 brctl delif "$brdev" "$dev" 2>/dev/null >/dev/null
454 do_sysctl "net.ipv6.conf.$dev.disable_ipv6" 0