2 # Copyright (C) 2006 OpenWrt.org
7 local iftype device iface ifaces ifn
8 for ifn in $interfaces; do
9 config_get iftype "$ifn" type
10 config_get iface "$ifn" ifname
12 bridge) config_get ifaces "$ifn" ifnames;;
14 config_get device "$ifn" device
15 for ifc in $device $iface $ifaces; do
16 [ ."$ifc" = ."$1" ] && {
27 local cfgfile="${1:-network}"
32 config_set "$2" auto 1
35 local iftype ifname device proto
36 config_get iftype "$CONFIG_SECTION" TYPE
39 append interfaces "$CONFIG_SECTION"
40 config_get proto "$CONFIG_SECTION" proto
41 config_get iftype "$CONFIG_SECTION" type
42 config_get ifname "$CONFIG_SECTION" ifname
43 config_get device "$CONFIG_SECTION" device "$ifname"
44 config_set "$CONFIG_SECTION" device "$device"
47 config_set "$CONFIG_SECTION" ifnames "$device"
48 config_set "$CONFIG_SECTION" ifname br-"$CONFIG_SECTION"
51 ( type "scan_$proto" ) >/dev/null 2>/dev/null && eval "scan_$proto '$CONFIG_SECTION'"
55 config_load "${cfgfile}"
61 [ "$1" = "$vif" ] || ifconfig "$1" >/dev/null 2>/dev/null || {
62 ifconfig "$vif" up 2>/dev/null >/dev/null || add_vlan "$vif"
63 $DEBUG vconfig add "$vif" "${1##*\.}"
69 # add dns entries if they are not in resolv.conf yet
75 # We may be called by pppd's ip-up which has a nonstandard umask set.
76 # Create an empty file here and force its permission to 0644, otherwise
77 # dnsmasq will not be able to re-read the resolv.conf.auto .
78 [ ! -f /tmp/resolv.conf.auto ] && {
79 touch /tmp/resolv.conf.auto
80 chmod 0644 /tmp/resolv.conf.auto
86 grep -qsF "nameserver $dns" /tmp/resolv.conf.auto || {
87 add="${add:+$add }$dns"
88 echo "nameserver $dns" >> /tmp/resolv.conf.auto
93 uci_set_state network "$cfg" dns "$add"
94 uci_set_state network "$cfg" resolv_dns "$add"
98 # remove dns entries of the given iface
103 [ -f /tmp/resolv.conf.auto ] && {
104 local dns=$(uci_get_state network "$cfg" resolv_dns)
106 sed -i -e "/^nameserver $dns$/d" /tmp/resolv.conf.auto
110 uci_revert_state network "$cfg" dns
111 uci_revert_state network "$cfg" resolv_dns
115 # sort the device list, drop duplicates
125 # Create the interface, if necessary.
126 # Return status 0 indicates that the setup_interface() call should continue
127 # Return status 1 means that everything is set up already.
129 prepare_interface() {
134 # if we're called for the bridge interface itself, don't bother trying
135 # to create any interfaces here. The scripts have already done that, otherwise
136 # the bridge interface wouldn't exist.
137 [ "br-$config" = "$iface" -o -e "$iface" ] && return 0;
139 ifconfig "$iface" 2>/dev/null >/dev/null && {
141 config_get proto "$config" proto
143 # make sure the interface is removed from any existing bridge and deconfigured,
144 # (deconfigured only if the interface is not set to proto=none)
146 [ "$proto" = none ] || ifconfig "$iface" 0.0.0.0
148 # Change interface MAC address if requested
149 [ -n "$vifmac" ] && {
150 ifconfig "$iface" down
151 ifconfig "$iface" hw ether "$vifmac" up
155 # Setup VLAN interfaces
156 add_vlan "$iface" && return 1
157 ifconfig "$iface" 2>/dev/null >/dev/null || return 0
161 config_get iftype "$config" type
165 config_get macaddr "$config" macaddr
166 [ -x /usr/sbin/brctl ] && {
167 # Remove IPv6 link local addr before adding the iface to the bridge
168 local llv6="$(ifconfig "$iface")"
171 llv6="${llv6#* fe80:}"
172 ifconfig "$iface" del "fe80:${llv6%% *}"
176 ifconfig "br-$config" 2>/dev/null >/dev/null && {
177 local newdevs devices
178 config_get devices "$config" device
179 for dev in $(sort_list "$devices" "$iface"); do
180 append newdevs "$dev"
182 uci_set_state network "$config" device "$newdevs"
183 $DEBUG ifconfig "$iface" 0.0.0.0
184 $DEBUG brctl addif "br-$config" "$iface"
185 # Bridge existed already. No further processing necesary
188 config_get_bool stp "$config" stp 0
189 $DEBUG brctl addbr "br-$config"
190 $DEBUG brctl setfd "br-$config" 0
191 $DEBUG ifconfig "br-$config" up
192 $DEBUG ifconfig "$iface" 0.0.0.0
193 $DEBUG brctl addif "br-$config" "$iface"
194 $DEBUG brctl stp "br-$config" $stp
195 # Creating the bridge here will have triggered a hotplug event, which will
196 # result in another setup_interface() call, so we simply stop processing
197 # the current event at this point.
199 ifconfig "$iface" ${macaddr:+hw ether "${macaddr}"} up 2>/dev/null >/dev/null
207 set_interface_ifname() {
212 config_get device "$1" device
213 uci_set_state network "$config" ifname "$ifname"
214 uci_set_state network "$config" device "$device"
217 setup_interface_none() {
218 env -i ACTION="ifup" INTERFACE="$2" DEVICE="$1" PROTO=none /sbin/hotplug-call "iface" &
221 setup_interface_static() {
225 local ipaddr netmask ip6addr
226 config_get ipaddr "$config" ipaddr
227 config_get netmask "$config" netmask
228 config_get ip6addr "$config" ip6addr
229 [ -z "$ipaddr" -o -z "$netmask" ] && [ -z "$ip6addr" ] && return 1
231 local gateway ip6gw dns bcast
232 config_get gateway "$config" gateway
233 config_get ip6gw "$config" ip6gw
234 config_get dns "$config" dns
235 config_get bcast "$config" broadcast
237 [ -z "$ipaddr" ] || $DEBUG ifconfig "$iface" "$ipaddr" netmask "$netmask" broadcast "${bcast:-+}"
238 [ -z "$ip6addr" ] || $DEBUG ifconfig "$iface" add "$ip6addr"
239 [ -z "$gateway" ] || $DEBUG route add default gw "$gateway" dev "$iface"
240 [ -z "$ip6gw" ] || $DEBUG route -A inet6 add default gw "$ip6gw" dev "$iface"
241 [ -z "$dns" ] || add_dns "$config" $dns
243 config_get type "$config" TYPE
244 [ "$type" = "alias" ] && return 0
246 env -i ACTION="ifup" INTERFACE="$config" DEVICE="$iface" PROTO=static /sbin/hotplug-call "iface" &
249 setup_interface_alias() {
255 config_get cfg "$config" interface
256 [ "$parent" == "$cfg" ] || return 0
258 # parent device and ifname
259 local p_device p_type
260 config_get p_device "$cfg" device
261 config_get p_type "$cfg" type
263 # select alias ifname
264 local layer use_iface
265 config_get layer "$config" layer 2
266 case "$layer:$p_type" in
267 # layer 3: e.g. pppoe-wan or pptp-vpn
268 3:*) use_iface="$iface" ;;
270 # layer 2 and parent is bridge: e.g. br-wan
271 2:bridge) use_iface="br-$cfg" ;;
273 # layer 1: e.g. eth0 or ath0
274 *) use_iface="$p_device" ;;
279 config_get ctr "$parent" alias_count 0
281 config_set "$parent" alias_count "$ctr"
285 config_get list "$parent" aliases
286 append list "$config"
287 config_set "$parent" aliases "$list"
289 use_iface="$use_iface:$ctr"
290 set_interface_ifname "$config" "$use_iface"
293 config_get proto "$config" proto "static"
296 setup_interface_static "$use_iface" "$config"
299 echo "Unsupported type '$proto' for alias config '$config'"
311 [ -n "$config" ] || {
312 config=$(find_config "$iface")
313 [ "$?" = 0 ] || return 1
316 prepare_interface "$iface" "$config" "$vifmac" || return 0
318 [ "$iface" = "br-$config" ] && {
319 # need to bring up the bridge and wait a second for
320 # it to switch to the 'forwarding' state, otherwise
321 # it will lose its routes...
327 grep "$iface:" /proc/net/dev > /dev/null && {
329 config_get mtu "$config" mtu
330 config_get macaddr "$config" macaddr
331 config_get txqueuelen "$config" txqueuelen
332 [ -n "$macaddr" ] && $DEBUG ifconfig "$iface" down
333 $DEBUG ifconfig "$iface_main" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} ${txqueuelen:+txqueuelen $txqueuelen} up
335 set_interface_ifname "$config" "$iface"
337 [ -n "$proto" ] || config_get proto "$config" proto
340 setup_interface_static "$iface" "$config"
343 local lockfile="/var/lock/dhcp-$iface"
346 # prevent udhcpc from starting more than once
347 local pidfile="/var/run/dhcp-${iface}.pid"
348 local pid="$(cat "$pidfile" 2>/dev/null)"
349 if [ -d "/proc/$pid" ] && grep -qs udhcpc "/proc/${pid}/cmdline"; then
352 local ipaddr netmask hostname proto1 clientid broadcast
353 config_get ipaddr "$config" ipaddr
354 config_get netmask "$config" netmask
355 config_get hostname "$config" hostname
356 config_get proto1 "$config" proto
357 config_get clientid "$config" clientid
358 config_get_bool broadcast "$config" broadcast 0
360 [ -z "$ipaddr" ] || \
361 $DEBUG ifconfig "$iface" "$ipaddr" ${netmask:+netmask "$netmask"}
363 # don't stay running in background if dhcp is not the main proto on the interface (e.g. when using pptp)
365 [ ."$proto1" != ."$proto" ] && dhcpopts="-n -q"
366 [ "$broadcast" = 1 ] && broadcast="-O broadcast" || broadcast=
368 $DEBUG eval udhcpc -t 0 -i "$iface" \
369 ${ipaddr:+-r $ipaddr} \
370 ${hostname:+-H $hostname} \
371 ${clientid:+-c $clientid} \
372 -b -p "$pidfile" $broadcast \
373 ${dhcpopts:- -O rootpath -R &}
379 setup_interface_none "$iface" "$config"
382 if ( eval "type setup_interface_$proto" ) >/dev/null 2>/dev/null; then
383 eval "setup_interface_$proto '$iface' '$config' '$proto'"
385 echo "Interface type $proto not supported."
392 stop_interface_dhcp() {
396 config_get ifname "$config" ifname
398 local lock="/var/lock/dhcp-${ifname}"
399 [ -f "$lock" ] && lock -u "$lock"
403 local pidfile="/var/run/dhcp-${ifname}.pid"
404 local pid="$(cat "$pidfile" 2>/dev/null)"
405 [ -d "/proc/$pid" ] && {
406 grep -qs udhcpc "/proc/$pid/cmdline" && kill -TERM $pid && \
407 while grep -qs udhcpc "/proc/$pid/cmdline"; do sleep 1; done
411 uci -P /var/state revert "network.$config"
418 [ -x /usr/sbin/brctl ] || return 0
419 brctl show 2>/dev/null | grep "$dev" >/dev/null && {
420 # interface is still part of a bridge, correct that
422 for brdev in $(brctl show | awk '$2 ~ /^[0-9].*\./ { print $1 }'); do
423 brctl delif "$brdev" "$dev" 2>/dev/null >/dev/null